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The B612 Foundation is a private
nonprofit A nonprofit organization (NPO) or non-profit organisation, also known as a non-business entity, not-for-profit organization, or nonprofit institution, is a legal entity organized and operated for a collective, public or social benefit, in co ...
foundation headquartered in
Mill Valley, California Mill Valley is a city in Marin County, California, Marin County, California, United States, located about north of San Francisco via the Golden Gate Bridge and from Napa Valley. The population was 14,231 at the 2020 United States Census, 2020 ...
, United States, dedicated to planetary science and planetary defense against
asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...
s and other near-Earth object (NEO) impacts. It is led mainly by scientists, former astronauts and engineers from the
Institute for Advanced Study The Institute for Advanced Study (IAS), located in Princeton, New Jersey, in the United States, is an independent center for theoretical research and intellectual inquiry. It has served as the academic home of internationally preeminent schola ...
,
Southwest Research Institute Southwest Research Institute (SwRI), headquartered in San Antonio, Texas, is an independent and nonprofit applied research and development (R&D) organization. Founded in 1947 by oil businessman Tom Slick, it provides contract research and devel ...
,
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
,
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
and the space industry. As a
non-governmental organization A non-governmental organization (NGO) or non-governmental organisation (see spelling differences) is an organization that generally is formed independent from government. They are typically nonprofit entities, and many of them are active in ...
it has conducted two lines of related research to help detect NEOs that could one day strike the
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's sur ...
, and find the technological means to divert their path to avoid such collisions. It also assisted the
Association of Space Explorers The Association of Space Explorers is a non-profit organization with a membership composed of people who have completed at least one Earth orbit in space (above , as defined by the Fédération Aéronautique Internationale. It was founded in 1985, ...
in helping the
United Nations The United Nations (UN) is an intergovernmental organization whose stated purposes are to maintain international peace and security, develop friendly relations among nations, achieve international cooperation, and be a centre for harmoni ...
establish the International Asteroid Warning Network, as well as a Space Missions Planning Advisory Group to provide oversight on proposed
asteroid deflection Asteroid impact avoidance comprises the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted away, preventing destructive impact events. An impact by a sufficiently large asteroid or other NEOs ...
missions. In 2012, the foundation announced it would design and build a privately financed asteroid-finding
space observatory A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched ...
, the
Sentinel Space Telescope The Sentinel Space Telescope was a space observatory to be developed by Ball Aerospace & Technologies for the B612 Foundation. The B612 Foundation is dedicated to protecting the Earth from dangerous asteroid strikes and Sentinel was to be the F ...
, to be launched in 2017–2018. Once stationed in a
heliocentric orbit A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun. All planets, comets, and asteroids in the Solar System, and the Sun ...
around the Sun similar to that of
Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ...
, Sentinel's supercooled
infrared detector An infrared detector is a detector that reacts to infrared (IR) radiation. The two main types of detectors are thermal and photonic (photodetectors). The thermal effects of the incident IR radiation can be followed through many temperature depen ...
would have helped identify dangerous asteroids and other NEOs that pose a risk of collision with Earth. In the absence of substantive planetary defense provided by governments worldwide, B612 attempted a fundraising campaign to cover the Sentinel Mission, estimated at $450 million for 10 years of operation. Fundraising was unsuccessful, and the program was cancelled in 2017, with the Foundation pursuing a constellation of smaller satellites instead. The B612 Foundation is named for the asteroid home of the
eponym An eponym is a person, a place, or a thing after whom or which someone or something is, or is believed to be, named. The adjectives which are derived from the word eponym include ''eponymous'' and ''eponymic''. Usage of the word The term ''epon ...
ous hero of
Antoine de Saint-Exupéry Antoine Marie Jean-Baptiste Roger, comte de Saint-Exupéry, simply known as Antoine de Saint-Exupéry (, , ; 29 June 1900 – 31 July 1944), was a French writer, poet, aristocrat, journalist and pioneering aviator. He became a laureate of s ...
's 1943 book ''
The Little Prince ''The Little Prince'' (french: Le Petit Prince, ) is a novella by French aristocrat, writer, and military pilot Antoine de Saint-Exupéry. It was first published in English and French in the United States by Reynal & Hitchcock in April 1943 an ...
''.


Background

When an
asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...
enters the planet's atmosphere it becomes known as a '
meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as mi ...
'; those that survive and fall to the Earth's surface are then called '
meteorite A meteorite is a solid piece of debris from an object, such as a comet, asteroid, or meteoroid, that originates in outer space and survives its passage through the atmosphere to reach the surface of a planet or moon. When the original object ...
s'. While basketball-sized meteors occur almost daily, and compact car-sized ones about yearly, they usually burn up or explode high above the Earth as
bolide A bolide is normally taken to mean an exceptionally bright meteor, but the term is subject to more than one definition, according to context. It may refer to any large crater-forming body, or to one that explodes in the atmosphere. It can be a ...
s, (fireballs), often with little notice. During an average 24-hour period, the Earth sweeps through some 100 million particles of interplanetary dust and pieces of cosmic debris, only a very minor amount of which arrives on the ground as meteorites. The larger in size asteroids or other
near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (Apsis, perihelion) is less than 1.3 astronomical unit ...
s (NEOs) are, the less frequently they impact the planet's atmosphere—large meteors seen in the skies are extremely rare, while medium-sized ones are less so, and much smaller ones are more commonplace. Although stony asteroids often explode high in the atmosphere, some objects, especially iron-nickel meteors and other types descending at a steep angle, can explode close to ground level or even directly impact onto land or sea. In the U.S.
State of Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Four Co ...
, the
Meteor Crater Meteor Crater, or Barringer Crater, is a meteorite impact crater about east of Flagstaff and west of Winslow in the desert of northern Arizona, United States. The site had several earlier names, and fragments of the meteorite are offi ...
(officially named Barringer Crater) formed in a fraction of a second as nearly 160 million tonnes of limestone and bedrock were uplifted, creating its crater rim on formerly flat terrain. The asteroid that produced the Barringer Crater was only about in size; however it impacted the ground at a velocity of and struck with an impact energy of —about 625 times greater than the bomb that destroyed the city of Hiroshima during World War II.
Tsunami A tsunami ( ; from ja, 津波, lit=harbour wave, ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater exp ...
s can also occur after a medium-sized or larger asteroid impacts an ocean surface or other large body of water. The probability of a mid-sized asteroid (similar to the one that destroyed the Tunguska River area of Russia in 1908) hitting Earth during the 21st century has been estimated at 30%.Hernandez, Vittorio
Former NASA Astronaut Predicts 30% Chance of Near-Earth Asteroid Hit Within Century
, ''
International Business Times The ''International Business Times'' is an American online news publication that publishes five national editions in four languages. The publication, sometimes called ''IBTimes'' or ''IBT'', offers news, opinion and editorial commentary on busi ...
'', March 21, 2013.
Since the Earth is currently more populated than in previous eras, there is a greater risk of large casualties arising from a mid-sized asteroid impact. However, as of the early 2010s, only about a half of one per cent of Tunguska-type NEOs had been located by astronomers using ground-based telescope surveys. The need for an asteroid detection program has been compared to the need for monsoon, typhoon, and hurricane preparedness. As the B612 Foundation and other organizations have publicly noted, of the different types of natural catastrophes that can occur on our planet, asteroid strikes are the only one that the world now has the technical capability to prevent. B612 is one of several organizations to propose detailed dynamic surveys of NEOs and preventative measures such as asteroid deflection. Other groups include Chinese researchers,
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
in the United States, NEOShield in Europe, as well as the international Spaceguard Foundation. In December 2009 Roscosmos Russian Federal Space Agency director Anatoly Perminov proposed a deflection mission to the asteroid
99942 Apophis 99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April&nb ...
, which at the time had been thought to pose a risk of collision with Earth.


Asteroid deflection workshop

The Foundation evolved from an informal one-day workshop on
asteroid deflection Asteroid impact avoidance comprises the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted away, preventing destructive impact events. An impact by a sufficiently large asteroid or other NEOs ...
strategies during October 2001, organized by Dutch astrophysicist
Piet Hut Piet Hut (born September 26, 1952) is a Dutch-American astrophysicist, who divides his time between research in computer simulations of dense stellar systems and broadly interdisciplinary collaborations, ranging from other fields in natural scien ...
along with physicist and then-U.S. astronaut Ed Lu, presented at NASA's Johnson Space Center in Houston, Texas. Twenty researchers participated, principally from various NASA facilities plus the non-profit
Southwest Research Institute Southwest Research Institute (SwRI), headquartered in San Antonio, Texas, is an independent and nonprofit applied research and development (R&D) organization. Founded in 1947 by oil businessman Tom Slick, it provides contract research and devel ...
, but as well from the University of California, University of Michigan, and the Institute for Independent Study. All were interested in contributing to the proposed creation of an asteroid deflection capability. The seminar participants included
Rusty Schweickart Russell Louis "Rusty" Schweickart (also Schweikart; born October 25, 1935) is an American aeronautical engineer, and a former NASA astronaut, research scientist, U.S. Air Force fighter pilot, as well as a former business executive and governme ...
, a former Apollo astronaut, and Clark Chapman, a
planetary scientist Planetary science (or more rarely, planetology) is the scientific study of planets (including Earth), celestial bodies (such as moons, asteroids, comets) and planetary systems (in particular those of the Solar System) and the processes of their fo ...
. Among the proposed experimental research missions discussed were the alteration of an asteroid's spin rate, as well as changing the orbit of one part of a binary asteroid pair. Following the seminar's round-table discussions the workshop generally agreed that the vehicle of choice (needed to deflect an asteroid) would be powered by a low-thrust ion plasma engine. Landing a nuclear-powered plasma engined pusher vehicle on the asteroid's surface was seen as promising, an early proposal that would later encounter a number of technical obstacles. Nuclear explosives were seen as "too risky and unpredictable" for several reasons, warranting the view that gently altering an asteroid's trajectory was the safest approach—but also a method requiring years of advance warning to successfully accomplish.


B612 Project and Foundation

The October 2001 asteroid deflection workshop participants created the "B612 Project" to further their research. Schweickart, along with Drs. Hut, Lu and Chapman, then formed the B612 Foundation on October 7, 2002, with its first goal being to "significantly alter the orbit of an asteroid in a controlled manner". Schweickart became an early public face of the foundation and served as chairman on its
board of directors A board of directors (commonly referred simply as the board) is an executive committee that jointly supervises the activities of an organization, which can be either a for-profit or a nonprofit organization such as a business, nonprofit orga ...
. In 2010, as part of an ''ad hoc'' task force on planetary defense, he advocated increasing NASA's annual budget by $250M–$300 million over a 10-year period (with an operational maintenance budget of up to $75 million per year after that) in order to more fully catalog the
near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (Apsis, perihelion) is less than 1.3 astronomical unit ...
s (NEOs) that can pose a threat to Earth, and to also fully develop impact avoidance capabilities. That recommended level of budgetary support would permit up to 10–20 years of advance warning in order to create a sufficient window for the required trajectory deflection. Their recommendations were made to a NASA Advisory Council, but were ultimately unsuccessful in obtaining Congressional funding due to NASA, lacking a legislated mandate for
planetary protection Planetary protection is a guiding principle in the design of an interplanetary mission, aiming to prevent biological contamination of both the target celestial body and the Earth in the case of sample-return missions. Planetary protection reflec ...
, not being permitted to request it. Feeling it would be imprudent to continue waiting for substantive government or United Nations action, B612 began a fundraising campaign in 2012 to cover the approximate US$450 million cost for the development, launch and operations of an asteroid-finding
space telescope A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launch ...
, to be called
Sentinel Sentinel may refer to: Places Mountains * Mount Sentinel, a mountain next to the University of Montana in Missoula, Montana * Sentinel Buttress, a volcanic crag on James Ross Island, Antarctica * Sentinel Dome, a naturally occurring gran ...
, with a goal of raising $30 to $40 million per year. The
space observatory A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched ...
's objective would be to accurately survey NEOs from an orbit similar to that Venus, creating a large dynamic catalog of such objects that would help identify dangerous Earth-impactors, deemed a necessary precursor to mounting any asteroid deflection mission. In March and April 2013, several weeks after the
Chelyabinsk meteor The Chelyabinsk meteor was a superbolide that entered Earth's atmosphere over the southern Ural region in Russia on 15 February 2013 at about 09:20 YEKT (03:20 UTC). It was caused by an approximately near-Earth asteroid that entered the a ...
explosion injured some 1,500 people, the U.S. Congress held hearings for "...the Risks, Impacts and Solutions for Space Threats". They received testimony from B612 head Ed Lu (see video at right), as well as Dr. Donald K. Yeomans, head of NASA's NEO Program Office, Dr. Michael A'Hearn of the University of Maryland and co-chair of a 2009 U.S. National Research Council study on asteroid threats, plus others. The difficulty of quickly intercepting an imminent asteroid threat to Earth was made apparent during the testimony: As a result of a set of hearings by the NASA Advisory Committee following the Chelyabinsk explosion in 2013, in conjunction with a White House request to double its budget, NASA's Near Earth Object Program funding was increased to $40.5 M/year in its FY2014 (Fiscal Year 2014) budget. It had previously been increased to $20.5 M/year in FY2012 (about 0.1% of NASA's annual budget at the time), from an average of about $4 M/year between 2002 and 2010.


Asteroid hazard reassessment

On
Earth Day Earth Day is an annual event on April 22 to demonstrate support for environmental protection. First held on April 22, 1970, it now includes a wide range of events coordinated globally by EarthDay.org (formerly Earth Day Network) including 1 b ...
, April 22, 2014, the B612 Foundation formally presented a revised assessment on the frequency of "city-killer" type impact events, based on research led by Canadian planetary scientist Peter Brown of the
University of Western Ontario The University of Western Ontario (UWO), also known as Western University or Western, is a public research university in London, Ontario, Canada. The main campus is located on of land, surrounded by residential neighbourhoods and the Thames R ...
's (UWO) Centre for Planetary Science and Exploration. Dr. Brown's analysis, "A 500-Kiloton Airburst Over Chelyabinsk and An Enhanced Hazard from Small Impactors", published in the journals
Science Science is a systematic endeavor that builds and organizes knowledge in the form of testable explanations and predictions about the universe. Science may be as old as the human species, and some of the earliest archeological evidence ...
and
Nature Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are ...
, was used to produce a short computer-animated video that was presented to the media at the
Seattle Museum of Flight The Museum of Flight is a private non-profit air and space museum in the Seattle metropolitan area. It is located at the southern end of King County International Airport (Boeing Field) in the city of Tukwila, immediately south of Seat ...
. The nearly one and a half minute video displayed a rotating globe with the impact points of about 25 asteroids measuring more than one, and up to 600 kilotons of blast force, that struck the Earth from 2000 to 2013 (for comparison, the nuclear bomb that destroyed Hiroshima was equivalent to about 16 kilotons of TNT blast force). Of those impacts between 2000 and 2013, eight of them were as large, or larger, than the Hiroshima bomb. Only one of the asteroids, 2008 TC3, was detected in advance, some 19 hours before exploding in the atmosphere. As was the case with the 2013 Chelyabinsk meteor, no warnings were issued for any of the other impacts. At the presentation, alongside former NASA astronauts Dr. Tom Jones and
Apollo 8 Apollo 8 (December 21–27, 1968) was the first crewed spacecraft to leave low Earth orbit and the first human spaceflight to reach the Moon. The crew orbited the Moon ten times without landing, and then departed safely back to Earth. The ...
astronaut Bill Anders, Foundation head Ed Lu explained that the frequency of dangerous asteroid impacts hitting Earth was from three to ten times greater than previously believed a dozen or so years ago (earlier estimates had pegged the odds as one per 300,000 years). The latest reassessment is based on worldwide
infrasound Infrasound, sometimes referred to as low status sound, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz). Hearing becomes gradually less sensitive as frequency decreases, so for humans to perce ...
signatures recorded under the auspices of the
Comprehensive Nuclear-Test-Ban Treaty Organization The Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO) is an international organization that will be established upon the entry into force of the Comprehensive Nuclear-Test-Ban Treaty, a Convention that outlaws nuclear test explosions. It ...
, which monitors the planet for nuclear explosions. Dr. Brown's UWO study used infrasound signals generated by asteroids that released more than a kiloton of TNT explosive force. The study suggested that "city-killer" type impact events similar to the
Tunguska event The Tunguska event (occasionally also called the Tunguska incident) was an approximately 12- megaton explosion that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of June 3 ...
of 1908 actually occur on average about once a century instead of every thousand years, as was once previously believed. The 1908 event occurred in the remote, sparsely populated Tunguska area of
Siberia Siberia ( ; rus, Сибирь, r=Sibir', p=sʲɪˈbʲirʲ, a=Ru-Сибирь.ogg) is an extensive geographical region, constituting all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has been a part ...
, Russia, and is attributed to the likely airburst explosion of an asteroid or comet that destroyed some 80 million trees over 2,150 square kilometres (830 sq mi) of forests. The higher frequency of these types of events is interpreted as meaning that "blind luck" has mainly prevented a catastrophic impact over an inhabited area that could kill millions, a point made near the video's end.


99942 Apophis

During the first decade of the 2000s, there were serious concerns the 325 metres (1,066 ft) wide asteroid
99942 Apophis 99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April&nb ...
posed a risk of impacting Earth in 2036. Preliminary, incomplete data by astronomers using ground-based sky surveys resulted in the calculation of a Level 4 risk on the Torino Scale impact hazard chart. In July 2005, B612 formally asked NASA to investigate the possibility that the asteroid's post-2029 orbit could be in
orbital resonance In celestial mechanics, orbital resonance occurs when orbiting bodies exert regular, periodic gravitational influence on each other, usually because their orbital periods are related by a ratio of small integers. Most commonly, this relationsh ...
with Earth, which would increase the likelihood of a future impact. The Foundation also asked NASA to investigate whether a
transponder In telecommunications, a transponder is a device that, upon receiving a signal, emits a different signal in response. The term is a blend of ''transmitter'' and ''responder''. In air navigation or radio frequency identification, a flight trans ...
should be placed on the asteroid to enable more accurate tracking of how its orbit would be changed by the
Yarkovsky effect The Yarkovsky effect is a force acting on a rotating body in space caused by the anisotropic emission of thermal photons, which carry momentum. It is usually considered in relation to meteoroids or small asteroids (about 10 cm to 10 km i ...
. By 2008, B612 had provided estimates on a 30 kilometers-wide corridor, called a "path of risk", that would extend across the Earth's surface if an impact were to occur, as part of its effort to develop viable deflection strategies. The calculated risk-path extended from
Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a transcontinental country located mainly in Central Asia and partly in Eastern Europe. It borders Russia to the north and west, China to the east, Kyrgyzstan to the southeast, Uzbeki ...
across southern Russia through Siberia, across the Pacific, then right between
Nicaragua Nicaragua (; ), officially the Republic of Nicaragua (), is the largest country in Central America, bordered by Honduras to the north, the Caribbean to the east, Costa Rica to the south, and the Pacific Ocean to the west. Managua is the coun ...
and
Costa Rica Costa Rica (, ; ; literally "Rich Coast"), officially the Republic of Costa Rica ( es, República de Costa Rica), is a country in the Central American region of North America, bordered by Nicaragua to the north, the Caribbean Sea to the no ...
, crossing northern
Colombia Colombia (, ; ), officially the Republic of Colombia, is a country in South America with insular regions in North America—near Nicaragua's Caribbean coast—as well as in the Pacific Ocean. The Colombian mainland is bordered by the ...
and
Venezuela Venezuela (; ), officially the Bolivarian Republic of Venezuela ( es, link=no, República Bolivariana de Venezuela), is a country on the northern coast of South America, consisting of a continental landmass and many islands and islets in th ...
, and ending in the Atlantic just before reaching Africa. At that time, a computer simulation estimated Apophis's hypothetical impact in countries, such as Colombia and Venezuela, could have resulted in more than 10 million casualties. Alternately, an impact in the Atlantic or Pacific oceans could produce a deadly
tsunami A tsunami ( ; from ja, 津波, lit=harbour wave, ) is a series of waves in a water body caused by the displacement of a large volume of water, generally in an ocean or a large lake. Earthquakes, volcanic eruptions and other underwater exp ...
over 240 metres (about 800 ft) in height, capable of destroying many coastal areas and cities. A series of later, more accurate observations of 99942 Apophis, combined with the recovery of previously unseen data, revised the odds of a collision in 2036 as being virtually nil, and effectively ruled it out.


International involvement

B612 Foundation members assisted the
Association of Space Explorers The Association of Space Explorers is a non-profit organization with a membership composed of people who have completed at least one Earth orbit in space (above , as defined by the Fédération Aéronautique Internationale. It was founded in 1985, ...
(ASE) in helping obtain United Nations (UN) oversight of NEO tracking and deflection missions through the UN's
Committee On the Peaceful Uses of Outer Space The United Nations Committee on the Peaceful Uses of Outer Space (COPUOS) is a United Nations committee whose main task is to review and foster international cooperation in the peaceful uses of outer space, as well as to consider legal issues ar ...
(UN COPUOS) along with COPUOS's Action Team 14 (AT-14) expert group. Several members of B612, also members of the ASE, worked with COPUOS since 2001 to establish international involvement for both impact disaster responses, and on deflection missions to prevent impact events. According to Foundation ''Chair Emeritus'' Rusty Schweickart in 2013, "No government in the world today has explicitly assigned the responsibility for planetary protection to any of its agencies". In October 2013, COPUOS's Scientific and Technical Subcommittee approved several measures, later approved by the UN General Assembly in December, to deal with terrestrial asteroid impacts, including the creation of an International Asteroid Warning Network (IAWN) plus two advisory groups: the Space Missions Planning Advisory Group (SMPAG), and the Impact Disaster Planning Advisory Group (IDPAG). The IAWN warning network will act as a clearinghouse for shared information on dangerous asteroids and for any future terrestrial impact events that are identified. The Space Missions Planning Advisory Group will coordinate joint studies of the technologies for deflection missions, and as well provide oversight of actual missions. This is due to deflection missions typically involving a progressive movement of an asteroid's predicted impact point across the surface of the Earth (and also across the territories of uninvolved countries) until the NEO is deflected either ahead of, or behind the planet at the point their orbits intersect. An initial framework of international cooperation at the UN is needed, said Schweickart, to guide the policymakers of its member nations on several important NEO-related aspects. However, as asserted by the Foundation, the new UN measures only constitute a starting point. To be effective they will need to be enhanced by further policies and resources implemented at both the national and supernational levels. At the time of the UN's policy adoption in New York City, Schweickart and four other ASE members, including B612 head Ed Lu and strategic advisers Dumitru Prunariu and
Tom Jones Tom Jones may refer to: Arts and entertainment *Tom Jones (singer) (born 1940), Welsh singer *Tom Jones (writer) (1928–2023), American librettist and lyricist *''The History of Tom Jones, a Foundling'', a novel by Henry Fielding published in 1 ...
participated in a public forum moderated by
Neil deGrasse Tyson Neil deGrasse Tyson ( or ; born October 5, 1958) is an American astrophysicist, author, and science communicator. Tyson studied at Harvard University, the University of Texas at Austin, and Columbia University. From 1991 to 1994, he was a p ...
not far from the
United Nations Headquarters zh, 联合国总部大楼french: Siège des Nations uniesrussian: Штаб-квартира Организации Объединённых Наций es, Sede de las Naciones Unidas , image = Midtown Manhattan Skyline 004.jpg , im ...
. The panel urged the global community to adopt further important steps for planetary defense against NEO impacts. Their recommendations included: * UN delegates briefing their home countries' policymakers on the UN's newest roles; * having each country's government create detailed asteroid disaster response plans, assigning fiscal resources to deal with asteroid impacts, and delegating a lead agency to handle its disaster response in order to create clear lines of communication from the IAWN to the affected countries; * having their governments support the ASE's and B612's efforts to identify the estimated one million "city-killer" NEOs capable of impacting Earth, by deploying a space-based asteroid telescope, and * committing member states to launching an international test deflection mission within 10 years.


Sentinel Mission

The Sentinel Mission program was the cornerstone of the B612 Foundation's earlier efforts, with its preliminary design and system architecture level reviews planned for 2014, and its
critical design review In the United States military integrated acquisition lifecycle the Technical section has multiple acquisition "Technical Reviews". Technical reviews and audits assist the acquisition and the number and types are tailored to the acquisition. Over ...
to be conducted in 2015. The
infrared telescope An infrared telescope is a telescope that uses infrared light to detect celestial bodies. Infrared light is one of several types of radiation present in the electromagnetic spectrum. All celestial objects with a temperature above absolute ze ...
would be launched atop a
SpaceX Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal o ...
Falcon 9 Falcon 9 is a partially reusable medium lift launch vehicle that can carry cargo and crew into Earth orbit, produced by American aerospace company SpaceX. The rocket has two stages. The first (booster) stage carries the second stage and pay ...
rocket, to be placed into a
Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ...
-trailing
Heliocentric orbit A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun. All planets, comets, and asteroids in the Solar System, and the Sun ...
around the Sun. Orbiting between the Sun and Earth, the Sun's rays would always be behind the telescope's lens and thus never inhibit the
space observatory A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched ...
's ability to detect asteroids or other
near-Earth object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (Apsis, perihelion) is less than 1.3 astronomical unit ...
s (NEOs). From the vantage of its inner-solar system orbit around the Sun, Sentinel would be able to "pick up objects that are currently difficult, if not impossible, to see in advance from Earth", such as occurred with the
Chelyabinsk meteor The Chelyabinsk meteor was a superbolide that entered Earth's atmosphere over the southern Ural region in Russia on 15 February 2013 at about 09:20 YEKT (03:20 UTC). It was caused by an approximately near-Earth asteroid that entered the a ...
of 2013 that went undetected until its explosion over
Chelyabinsk Oblast Chelyabinsk Oblast (russian: Челя́бинская о́бласть, ''Chelyabinskaya oblast'') is a federal subject (an oblast) of Russia in the Ural Mountains region, on the border of Europe and Asia. Its administrative center is the ...
,
Russia Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei ...
. The Sentinel Mission was planned to provide an accurate dynamic catalog of asteroids and other NEOs made available to scientists worldwide from the
International Astronomical Union The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreac ...
's
Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function T ...
, the data collected would calculate the risk of impact events with our planet, allowing for asteroid deflection by the use of
gravity tractor A gravity tractor is a theoretical spacecraft that would deflect another object in space, typically a potentially hazardous asteroid that might impact Earth, without physically contacting it, using only its gravitational field to transmit the requi ...
s to divert their trajectories away from Earth. In order to communicate with the spacecraft while it is orbiting the Sun (at about the same distance as Venus), which can be at times as far as 270 million kilometres (170 million miles) from Earth, the B612 Foundation entered into a
Space Act Agreement Space Act Agreements (abbreviated SAA) are a type of legal agreement specified in the National Aeronautics and Space Act of 1958 (and subsequent congressional authorizations) that uniquely empowers the National Aeronautics and Space Administration ...
with NASA for the use of their deep space telecommunication network.


Design and operation

Sentinel was designed to perform continuous observation and analysis during its planned -year operational life, although B612 anticipates it may continue to function for up to 10 years. Using its telescope mirror with sensors built by
Ball Aerospace Ball Aerospace & Technologies Corp. is an American manufacturer of spacecraft, components and instruments for national defense, civil space and commercial space applications. The company is a wholly owned subsidiary of Ball Corporation ( NYSE: BA ...
(makers of the
Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most vers ...
's instruments), its mission would be to catalog 90% of asteroids with diameters larger than . There were also plans to catalog smaller Solar System objects as well. The
space observatory A space telescope or space observatory is a telescope in outer space used to observe astronomical objects. Suggested by Lyman Spitzer in 1946, the first operational telescopes were the American Orbiting Astronomical Observatory, OAO-2 launched ...
would measure by with a mass of and would orbit the Sun at a distance of approximately the same orbital distance as
Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus (like Mercury) appears in Earth's sky never f ...
, employing
infrared astronomy Infrared astronomy is a sub-discipline of astronomy which specializes in the observation and analysis of astronomical objects using infrared (IR) radiation. The wavelength of infrared light ranges from 0.75 to 300 micrometers, and falls in be ...
to identify asteroids against the
cold Cold is the presence of low temperature, especially in the atmosphere. In common usage, cold is often a subjective perception. A lower bound to temperature is absolute zero, defined as 0.00K on the Kelvin scale, an absolute thermodynamic ...
of outer space. Sentinel would scan in the 7- to 15-micron
wavelength In physics, the wavelength is the spatial period of a periodic wave—the distance over which the wave's shape repeats. It is the distance between consecutive corresponding points of the same phase on the wave, such as two adjacent crests, tr ...
band across a 5.5 by 2-degree field of view. Its sensor array would consist of 16 detectors with coverage scanning "a 200-degree, full-angle field of regard". B612, working in partnership with Ball Aerospace, was constructing Sentinel's 51 cm aluminum mirror, designed for a large field of view with its infrared sensors cooled to using Ball's two-stage, closed-Stirling-cycle
cryocooler A refrigerator designed to reach cryogenic temperatures (below ) is often called a cryocooler. The term is most often used for smaller systems, typically table-top size, with input powers less than about 20 kW. Some can have input powers as lo ...
. B612 aimed to produce its space telescope at a significantly lower cost than traditional space science programs by making use of space hardware systems previously developed for earlier programs, rather than designing a brand new observatory. Schweickart stated that about "80% of what we're dealing with in Sentinel is
Kepler Johannes Kepler (; ; 27 December 1571 – 15 November 1630) was a German astronomer, mathematician, astrologer, natural philosopher and writer on music. He is a key figure in the 17th-century Scientific Revolution, best known for his laws o ...
, 15% Spitzer, 5% new, higher-performance
infrared sensors Infrared (IR), sometimes called infrared light, is electromagnetic radiation (EMR) with wavelengths longer than those of visible light. It is therefore invisible to the human eye. IR is generally understood to encompass wavelengths from around ...
", thus concentrating its R&D funds on the critical area of cryogenically-cooled image sensor technology, producing what it terms will be the most sensitive type of asteroid-finding telescope ever built. Data gathered by Sentinel would be provided through existing scientific data-sharing networks that include
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
and academic institutions such as the
Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function T ...
in
Cambridge, Massachusetts Cambridge ( ) is a city in Middlesex County, Massachusetts, United States. As part of the Boston metropolitan area, the cities population of the 2020 U.S. census was 118,403, making it the fourth most populous city in the state, behind Boston, ...
. Given the satellite's telescopic accuracy, Sentinel's data may have proven valuable for other possible future missions, such as
asteroid mining Asteroid mining is the hypothetical exploitation of materials from asteroids and other minor planets, including near-Earth objects. Notable asteroid mining challenges include the high cost of spaceflight, unreliable identification of asteroids ...
.


Mission funding

B612 was attempting to raise approximately $450M to fund the development, launch and operational costs of the telescope, about the cost of a complex
freeway A controlled-access highway is a type of highway that has been designed for high-speed vehicular traffic, with all traffic flow—ingress and egress—regulated. Common English terms are freeway, motorway and expressway. Other similar terms ...
interchange, or approximately $100M less than a single Air Force Next-Generation Bomber. The $450 million cost estimate is composed of $250 million to create Sentinel, plus another $200 million for 10 years of operations. In explaining the Foundation's bypassing of possible governmental grants for such a mission, Dr. Lu stated their public fundraising appeal is being driven by " e tragedy of the commons: When it's everybody's problem, it's nobody's problem", referring to a lack of ownership, priority and funding that governments have assigned to asteroid threats, also stating on a different occasion "We're the only ones taking it seriously." According to another B612 board member, Rusty Schweickart, "The good news is, you can prevent it—not just get ready for it! The bad news is, it's hard to get anybody to pay attention to it when there are potholes in the road." After providing earlier Congressional testimony on the issue Schweickart was dismayed to hear from congressional staff members that, while U.S. lawmakers involved in the hearing understood the seriousness of the threat, they would likely not legislate funding for planetary defense as "making the deflection of asteroids a priority might backfire in
heir Inheritance is the practice of receiving private property, titles, debts, entitlements, privileges, rights, and obligations upon the death of an individual. The rules of inheritance differ among societies and have changed over time. Offic ...
reelection campaigns". The Foundation intended to launch Sentinel in 2017–2018, with initiation of data transfer for on-
Earth Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's sur ...
processing anticipated no later than 6 months afterwards. In the aftermath of the February 2013 Chelyabinsk meteor explosion—where an approximate asteroid entered the atmosphere undetected at about Mach 60, becoming a brilliant
superbolide A bolide is normally taken to mean an exceptionally bright meteor, but the term is subject to more than one definition, according to context. It may refer to any large crater-forming body, or to one that explodes in the atmosphere. It can be a s ...
meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as mi ...
before exploding over Chelyabinsk, Russia—the B612 foundation experienced a "surge of interest" in its project to detect asteroids, with a corresponding increase in funding donations. After providing Congressional testimony Dr. Lu noted that the many online videos recorded of the asteroid's explosion over Chelyabinsk made a significant impact on millions of viewers worldwide, saying "There's nothing like a hundred YouTube videos to do that."


Staff


Leadership

In 2014 eight key staff positions were designated, covering the offices of the
chief executive officer A chief executive officer (CEO), also known as a central executive officer (CEO), chief administrator officer (CAO) or just chief executive (CE), is one of a number of corporate executives charged with the management of an organization especiall ...
(CEO),
chief operating officer A chief operating officer or chief operations officer, also called a COO, is one of the highest-ranking executive positions in an organization, composing part of the " C-suite". The COO is usually the second-in-command at the firm, especially if ...
(COO), Sentinel Program Architecture (SPA), Sentinel Mission Direction (SMD), Sentinel Program Management (SPM), Sentinel Mission Science (SMS) and the Sentinel Standing Review Team (SSRT), plus Public Relations.


Ed Lu, Co-founder, B612 Foundation. Executive Director, Asteroid Institute

Edward Tsang "Ed" Lu (; born July 1, 1963) is a co-founder and the chief executive officer of the B612 Foundation, and as well, a U.S.
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate cau ...
and a former
NASA astronaut The NASA Astronaut Corps is a unit of the United States National Aeronautics and Space Administration (NASA) that selects, trains, and provides astronauts as crew members for U.S. and international space missions. It is based at Johnson Space ...
. He is a veteran of two Space Shuttle missions and an extended stay aboard the
International Space Station The International Space Station (ISS) is the largest Modular design, modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos ( ...
which included a six-hour spacewalk outside the station performing construction work. During his three missions he logged a total of 206 days in space. His education includes an electrical engineering degree from
Cornell University Cornell University is a private statutory land-grant research university based in Ithaca, New York. It is a member of the Ivy League. Founded in 1865 by Ezra Cornell and Andrew Dickson White, Cornell was founded with the intention to tea ...
, and a Ph.D. in applied physics from
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
. Lu became a specialist in solar physics and
astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the h ...
as a visiting scientist at the
High Altitude Observatory The High Altitude Observatory (HAO) conducts research and provides support and facilities for the solar-terrestrial physics research community in the areas of solar and heliospheric physics, and the effects of solar variability on the Earth's ma ...
based in Boulder, Colorado, from 1989 until 1992. In his final year, he held a joint appointment with the Joint Institute for Laboratory Astrophysics at the
University of Colorado The University of Colorado (CU) is a system of public universities in Colorado. It consists of four institutions: University of Colorado Boulder, University of Colorado Colorado Springs, University of Colorado Denver, and the University o ...
. Lu performed postdoctoral fellow work at the Institute for Astronomy in
Honolulu, Hawaii Honolulu (; ) is the capital and largest city of the U.S. state of Hawaii, which is in the Pacific Ocean. It is an unincorporated county seat of the consolidated City and County of Honolulu, situated along the southeast coast of the island ...
from 1992 until 1995 before being selected for NASA's Astronaut Corps in 1994. Lu developed a number of new theoretical advances, which have provided for the first time a basic understanding of the underlying physics of
solar flare A solar flare is an intense localized eruption of electromagnetic radiation in the Sun's atmosphere. Flares occur in active regions and are often, but not always, accompanied by coronal mass ejections, solar particle events, and other sol ...
s. Besides his work on solar flares he has published journal articles and scientific papers on a wide range of topics including
cosmology Cosmology () is a branch of physics and metaphysics dealing with the nature of the universe. The term ''cosmology'' was first used in English in 1656 in Thomas Blount's ''Glossographia'', and in 1731 taken up in Latin by German philosopher ...
, solar oscillations,
statistical mechanics In physics, statistical mechanics is a mathematical framework that applies statistical methods and probability theory to large assemblies of microscopic entities. It does not assume or postulate any natural laws, but explains the macroscopic b ...
,
plasma physics Plasma ()πλάσμα
, Henry George Liddell, R ...
,
near-Earth asteroids A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun ( perihelion) is less than 1.3 astronomical units (AU ...
, and is also a co-inventor of the gravitational tractor concept of
asteroid deflection Asteroid impact avoidance comprises the methods by which near-Earth objects (NEO) on a potential collision course with Earth could be diverted away, preventing destructive impact events. An impact by a sufficiently large asteroid or other NEOs ...
. In 2007 Lu retired from NASA to become the Program Manager on
Google Google LLC () is an American Multinational corporation, multinational technology company focusing on Search Engine, search engine technology, online advertising, cloud computing, software, computer software, quantum computing, e-commerce, ar ...
's Advanced Projects Team, and also worked with
Liquid Robotics Liquid Robotics is an American marine robotics corporation that designs, manufactures and sells the Wave Glider, a wave and solar powered unmanned surface vehicle (USV). The Wave Glider harvests energy from ocean waves for propulsion. With th ...
as its Chief of Innovative Applications, and at Hover Inc. as its Chief Technology Officer. While still at NASA during 2002 Lu co-founded the B612 Foundation, later serving as its Chair and in 2014 is currently its
chief executive officer A chief executive officer (CEO), also known as a central executive officer (CEO), chief administrator officer (CAO) or just chief executive (CE), is one of a number of corporate executives charged with the management of an organization especiall ...
. Lu holds a
commercial pilot license A commercial pilot licence (CPL) is a type of pilot licence that permits the holder to act as a pilot of an aircraft and be paid for their work. Different licenses are issued for the major aircraft categories: airplanes, airships, balloons, glid ...
with multi-engine instrument ratings, accumulating some 1,500 hours of flight time. Among his honors are NASA's highest awards, its Distinguished Service and Exceptional Service medals, as well as the Russian Gagarin, Komorov and Beregovoy Medals.


Tom Gavin, Chairman, Sentinel Standing Review Team

Thomas R. Gavin is the chairman of the B612 Foundation's Sentinel Standing Review Team (SSRT), and a former executive-level manager at
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
. He served with NASA for 30 years, including his position as Associate Director for Flight Programs and Mission Assurance at their
Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a Federally funded research and development centers, federally funded research and development center and NASA field center in the City of La Cañada Flintridge, California, La Cañada Flintridge, California ...
(JPL) organization, and "has been at the forefront in leading many of the most successful U.S. space missions, including Galileo's mission to Jupiter, Cassini–Huygens mission to Saturn, development of Genesis,
Stardust Stardust may refer to: * A type of cosmic dust, composed of particles in space Entertainment Songs * “Stardust” (1927 song), by Hoagy Carmichael * “Stardust” (David Essex song), 1974 * “Stardust” (Lena Meyer-Landrut song), 2012 * ...
, Mars 2001 Odyssey, Mars Exploration Rovers, SPITZER and
Galaxy Evolution Explorer Galaxy Evolution Explorer (GALEX or Explorer 83 or SMEX-7) was a NASA orbiting space telescope designed to observe the universe in ultraviolet wavelengths to measure the history of star formation in the universe. In addition to paving the way ...
programs." In 2001 he was appointed associate director for flight projects and mission success for NASA's Jet Propulsion Laboratory in May 2001. This was a new position created to provide the JPL Director's Office with oversight of flight projects. He later served as interim director for Solar System exploration. Previously, he was director of JPL's Space Science Flight Projects Directorate, which oversaw the Genesis, Mars 2001 Odyssey, Mars rovers, Spitzer Space Telescope and GALEX projects. He also served as deputy director of JPL's Space and Earth Science Programs Directorate beginning in December 1997. In June 1990 he was appointed spacecraft system manager for the Cassini–Huygens mission to Saturn, and retained that position until the project's successful launch in 1997. From 1968 to 1990 he was a member of the Galileo and Voyager project offices responsible for mission assurance. He received his bachelor's degree in chemistry from
Villanova University Villanova University is a private Roman Catholic research university in Villanova, Pennsylvania. It was founded by the Augustinians in 1842 and named after Saint Thomas of Villanova. The university is the oldest Catholic university in Pennsy ...
in Pennsylvania in 1961. Gavin has been honored on a number of occasions for exceptional work, receiving NASA's Distinguished and Exceptional Service Medals in 1981 for his work on the Voyager space probes program, NASA's Medal for Outstanding Leadership in 1991 for Galileo, and again in 1999 for the Cassini-Hygens mission. In 1997 ''
Aviation Week and Space Technology ''Aviation Week & Space Technology'', often abbreviated ''Aviation Week'' or ''AW&ST'', is the flagship magazine of the Aviation Week Network. The weekly magazine is available in print and online, reporting on the aerospace, defense and aviati ...
'' presented its Laurels Award to him for outstanding achievement in the field of space. He also earned the
American Astronomical Society The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC. The primary objective of the AAS is to promote the adv ...
's 2005 Randolph Lovelace II Award for his management of all
Jet Propulsion Laboratory The Jet Propulsion Laboratory (JPL) is a Federally funded research and development centers, federally funded research and development center and NASA field center in the City of La Cañada Flintridge, California, La Cañada Flintridge, California ...
and NASA robotic science spacecraft missions.


Scott Hubbard, Sentinel Program Architect

Dr. G. Scott Hubbard is the B612 Foundation's Sentinel Program Architect, as well as a physicist, academic and a former executive-level manager at
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
, the U.S. space agency. He is a professor of Aeronautics and Astronautics at
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
and has been engaged in space-related research as well as program, project and executive management for more than 35 years including 20 years with
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
, culminating his career there as director of NASA's
Ames Research Center The Ames Research Center (ARC), also known as NASA Ames, is a major NASA research center at Moffett Federal Airfield in California's Silicon Valley. It was founded in 1939 as the second National Advisory Committee for Aeronautics (NACA) labo ...
. At Ames he was responsible for overseeing the work of some 2,600 scientists, engineers and other staff. Currently on the
SpaceX Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal o ...
Safety Advisory Panel, he previously served as NASA's sole representative on the Space Shuttle Columbia Accident Investigation Board, and also as their first Mars Exploration Program director in 2000, successfully restructuring the entire Mars program in the wake of earlier serious mission failures. Hubbard founded NASA's Astrobiology Institute in 1998; conceived the
Mars Pathfinder ''Mars Pathfinder'' (''MESUR Pathfinder'') is an American robotic spacecraft that landed a base station with a roving probe on Mars in 1997. It consisted of a lander, renamed the Carl Sagan Memorial Station, and a lightweight, wheeled robot ...
mission with its airbag landing system and was the manager for their highly successful Lunar Prospector Mission. Prior to joining NASA, Hubbard led a small start-up high technology company in the San Francisco Bay Area and was a staff scientist at the
Lawrence Berkeley National Laboratory Lawrence Berkeley National Laboratory (LBNL), commonly referred to as the Berkeley Lab, is a United States national laboratory that is owned by, and conducts scientific research on behalf of, the United States Department of Energy. Located in ...
. Hubbard has received many honors including NASA's highest award, their
Distinguished Service Medal Distinguished Service Medal (DSM) is a high award of a nation. Examples include: *Distinguished Service Medal (Australia) (established 1991), awarded to personnel of the Australian Defence Force for distinguished leadership in action * Distinguishe ...
, and the
American Institute of Aeronautics and Astronautics The American Institute of Aeronautics and Astronautics (AIAA) is a professional society for the field of aerospace engineering. The AIAA is the U.S. representative on the International Astronautical Federation and the International Council of ...
's Von Karman Medal. Hubbard was elected to the
International Academy of Astronautics The International Academy of Astronautics (IAA) is an independent non-governmental organization established in Stockholm (Sweden) on August 16, 1960, by Dr. Theodore von Kármán, and recognized by the United Nations in 1996. The IAA has electe ...
, is a Fellow of the American Institute of Aeronautics and Astronautics, has authored more than 50 scientific papers on research and technology and also holds the Carl Sagan Chair at the
SETI Institute The SETI Institute is a not-for-profit research organization incorporated in 1984 whose mission is to explore, understand, and explain the origin and nature of life in the universe, and to use this knowledge to inspire and guide present and futu ...
. His education includes an undergraduate degree in physics and astronomy at
Vanderbilt University Vanderbilt University (informally Vandy or VU) is a private research university in Nashville, Tennessee. Founded in 1873, it was named in honor of shipping and rail magnate Cornelius Vanderbilt, who provided the school its initial $1-million ...
and a graduate degree in solid state and semiconductor physics at the
University of California at Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public university, public land-grant university, land-grant research university in Berkeley, California. Established in 1868 as the University of Californi ...
.


Marc Buie, Sentinel Mission Scientist

Dr. Marc W. Buie (b. 1958) is the foundation's Sentinel Mission Scientist, and as well a U.S.
astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...
at
Lowell Observatory Lowell Observatory is an astronomical observatory in Flagstaff, Arizona, United States. Lowell Observatory was established in 1894, placing it among the oldest observatories in the United States, and was designated a National Historic Landma ...
in
Flagstaff, Arizona Flagstaff ( ) is a city in, and the county seat of, Coconino County in northern Arizona, in the southwestern United States. In 2019, the city's estimated population was 75,038. Flagstaff's combined metropolitan area has an estimated population ...
. Buie received his B.Sc. in physics from
Louisiana State University Louisiana State University (officially Louisiana State University and Agricultural and Mechanical College, commonly referred to as LSU) is a public land-grant research university in Baton Rouge, Louisiana. The university was founded in 1860 n ...
in 1980 and earned his Ph.D. in Planetary Science from the
University of Arizona The University of Arizona (Arizona, U of A, UArizona, or UA) is a Public university, public Land-grant university, land-grant research university in Tucson, Arizona. Founded in 1885 by the 13th Arizona Territorial Legislature, it was the first ...
in 1984. He was a post-doctoral fellow at the
University of Hawaii A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, th ...
from 1985 to 1988. From 1988 to 1991, he worked at the
Space Telescope Science Institute The Space Telescope Science Institute (STScI) is the science operations center for the Hubble Space Telescope (HST), science operations and mission operations center for the James Webb Space Telescope (JWST), and science operations center for the ...
where he assisted in the planning of the first planetary observations made by the
Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most vers ...
. Since 1983,
Pluto Pluto (minor-planet designation: 134340 Pluto) is a dwarf planet in the Kuiper belt, a ring of trans-Neptunian object, bodies beyond the orbit of Neptune. It is the ninth-largest and tenth-most-massive known object to directly orbit the S ...
and its moons have been a central theme of the research done by Buie, who has published over 85 scientific papers and journal articles. He is also one of the co-discoverers of Pluto's new moons,
Nix Nix or NIX may refer to: Places * Nix, Alabama, an unincorporated community, United States * Nix, Texas, a ghost town in southwestern Lampasas County, Texas, United States * Nix (moon), a moon of Pluto People * Nix (surname), listing people wit ...
and Hydra (Pluto II and Pluto III) discovered in 2005. Buie has worked with the
Deep Ecliptic Survey The Deep Ecliptic Survey (DES) is a project to find Kuiper belt objects (KBOs), using the facilities of the National Optical Astronomy Observatory (NOAO). The principal investigator is Robert L. Millis. Since 1998 through the end of 2003, the su ...
team who have been responsible for the discovery of over a thousand such distant objects. He also studies the
Kuiper Belt The Kuiper belt () is a circumstellar disc in the outer Solar System, extending from the orbit of Neptune at 30 astronomical units (AU) to approximately 50 AU from the Sun. It is similar to the asteroid belt, but is far larger—20 tim ...
and transitional objects such as
2060 Chiron 2060 Chiron is a small Solar System body in the outer Solar System, orbiting the Sun between Saturn and Uranus. Discovered in 1977 by Charles Kowal, it was the first-identified member of a new class of objects now known as centaurs—bodies o ...
and 5145 Pholus, as well as the occasional comets as with the recent Deep impact mission that travelled to Comet Tempel 1, and near-Earth asteroids with the occasional use of the Hubble and
Spitzer Space Telescope The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope launched in 2003. Operations ended on 30 January 2020. Spitzer was the third space telescope dedicated to infrared astronomy, ...
s. Buie also assists in the development of advanced astronomical instrumentation. Asteroid 7553 Buie is named in honor of the astronomer, who has also been profiled as part of an article on Pluto in '' Air & Space Smithsonian'' magazine.


Harold Reitsema, Sentinel Mission Director

Dr. Harold James Reitsema (b. January 19, 1948, Kalamazoo, Michigan) is the foundation's Sentinel Mission Director and a U.S.
astronomer An astronomer is a scientist in the field of astronomy who focuses their studies on a specific question or field outside the scope of Earth. They observe astronomical objects such as stars, planets, moons, comets and galaxies – in either ...
. Reitsema was formerly Director of Science Mission Development at
Ball Aerospace & Technologies Ball Aerospace & Technologies Corp. is an American manufacturer of spacecraft, components and instruments for national defense, civil space and commercial space applications. The company is a wholly owned subsidiary of Ball Corporation ( NYSE: BA ...
, the B612 Foundation's prime contractor for designing and building its space telescope observatory. In his early career during the 1980s he was part of the teams that discovered new moons orbiting Neptune and Saturn through ground-based telescopic observations. Using a coronagraphic imaging system with one of the first
charge-coupled device A charge-coupled device (CCD) is an integrated circuit containing an array of linked, or coupled, capacitors. Under the control of an external circuit, each capacitor can transfer its electric charge to a neighboring capacitor. CCD sensors are a ...
s available for astronomical use, they first observed Telesto in April 1980, just two months after being one of the first groups to observe
Janus In ancient Roman religion and myth, Janus ( ; la, Ianvs ) is the god of beginnings, gates, transitions, time, duality, doorways, passages, frames, and endings. He is usually depicted as having two faces. The month of January is named for Jan ...
, also a moon of Saturn. Reitsema, as part of a different team of astronomers, observed
Larissa Larissa (; el, Λάρισα, , ) is the capital and largest city of the Thessaly region in Greece. It is the fifth-most populous city in Greece with a population of 144,651 according to the 2011 census. It is also capital of the Larissa regiona ...
in May 1981, by watching the occultation of a star by the Neptune system. Reitsema is also responsible for several advances in the use of
false-color False color (or pseudo color) refers to a group of color rendering methods used to display images in color which were recorded in the visible or non-visible parts of the electromagnetic spectrum. A false-color image is an image that depicts ...
techniques applied to astronomical images. Reitsema was a member of the Halley Multicolour Camera team on the
European Space Agency , owners = , headquarters = Paris, Île-de-France, France , coordinates = , spaceport = Guiana Space Centre , seal = File:ESA emblem seal.png , seal_size = 130px , image = Views in the Main Control Room (120 ...
Giotto Giotto di Bondone (; – January 8, 1337), known mononymously as Giotto ( , ) and Latinised as Giottus, was an Italian painter and architect from Florence during the Late Middle Ages. He worked during the Gothic/ Proto-Renaissance period. G ...
spacecraft that took close-up images of
Comet Halley Halley's Comet or Comet Halley, officially designated 1P/Halley, is a short-period comet visible from Earth every 75–79 years. Halley is the only known short-period comet that is regularly visible to the naked eye from Earth, and thus the on ...
in 1986. He has been involved in many of NASA's space science missions including the
Spitzer Space Telescope The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope launched in 2003. Operations ended on 30 January 2020. Spitzer was the third space telescope dedicated to infrared astronomy, ...
, Submillimeter Wave Astronomy Satellite, the
New Horizons ''New Horizons'' is an interplanetary space probe that was launched as a part of NASA's New Frontiers program. Engineered by the Johns Hopkins University Applied Physics Laboratory (APL) and the Southwest Research Institute (SwRI), with a ...
mission to Pluto and the
Kepler Space Observatory The Kepler space telescope is a disused space telescope launched by NASA in 2009 to discover Earth-sized planets orbiting other stars. Named after astronomer Johannes Kepler, the spacecraft was launched into an Earth-trailing heliocentric orbit ...
project searching for Earth-like planets orbiting distant stars similar to the Sun. Reitsema participated in the ground-based observations of Deep Impact mission in 2005, observing the impact of the spacecraft on the
Tempel 1 Tempel 1 (official designation: 9P/Tempel) is a periodic Jupiter-family comet discovered by Wilhelm Tempel in 1867. It completes an orbit of the Sun every 5.5 years. Tempel 1 was the target of the ''Deep Impact'' space mission, which photogra ...
comet using the telescopes of the Sierra de San Pedro Mártir Observatory in Mexico, along with colleagues from the
University of Maryland The University of Maryland, College Park (University of Maryland, UMD, or simply Maryland) is a public land-grant research university in College Park, Maryland. Founded in 1856, UMD is the flagship institution of the University System of ...
and the Mexican National Astronomical Observatory. Reitsema retired from Ball Aerospace in 2008 and remains a consultant to NASA and the aerospace industry in mission design and Near-Earth Objects. His education includes his B.A. in physics from
Calvin College Calvin University, formerly Calvin College, is a private Christian university in Grand Rapids, Michigan. Founded in 1876, Calvin University is an educational institution of the Christian Reformed Church and stands in the Reformed (Calvinist) ...
in
Grand Rapids, Michigan Grand Rapids is a city and county seat of Kent County in the U.S. state of Michigan. At the 2020 census, the city had a population of 198,917 which ranks it as the second most-populated city in the state after Detroit. Grand Rapids is th ...
in 1972 and a Ph.D. in astronomy from
New Mexico State University New Mexico State University (NMSU or NM State) is a public land-grant research university based primarily in Las Cruces, New Mexico. Founded in 1888, it is the oldest public institution of higher education in New Mexico and one of the state's ...
in 1977.
Main-belt The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...
Asteroid 13327 Reitsema is named after him to honor his achievements.


John Troeltzsch, Sentinel Program Manager

John Troeltzsch is the B612 Foundation's Sentinel Program Manager, a senior U.S.
aerospace engineer Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is s ...
and as well a program manager with
Ball Aerospace & Technologies Ball Aerospace & Technologies Corp. is an American manufacturer of spacecraft, components and instruments for national defense, civil space and commercial space applications. The company is a wholly owned subsidiary of Ball Corporation ( NYSE: BA ...
. Ball Aerospace is the Sentinel's prime contractor responsible for its design and integration, to be later launched aboard a
SpaceX Space Exploration Technologies Corp. (SpaceX) is an American spacecraft manufacturer, launcher, and a satellite communications corporation headquartered in Hawthorne, California. It was founded in 2002 by Elon Musk with the stated goal o ...
Falcon 9 Falcon 9 is a partially reusable medium lift launch vehicle that can carry cargo and crew into Earth orbit, produced by American aerospace company SpaceX. The rocket has two stages. The first (booster) stage carries the second stage and pay ...
rocket into a Venus-trailing
heliocentric orbit A heliocentric orbit (also called circumsolar orbit) is an orbit around the barycenter of the Solar System, which is usually located within or very near the surface of the Sun. All planets, comets, and asteroids in the Solar System, and the Sun ...
around the Sun. Troeltzsch's responsibilities include overseeing all requirements for the observatory's detailed design and build at Ball. As part of his 31 years of service with them, he helped create three of the
Hubble Space Telescope The Hubble Space Telescope (often referred to as HST or Hubble) is a space telescope that was launched into low Earth orbit in 1990 and remains in operation. It was not the first space telescope, but it is one of the largest and most vers ...
's instruments and also managed the
Spitzer Space Telescope The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope launched in 2003. Operations ended on 30 January 2020. Spitzer was the third space telescope dedicated to infrared astronomy, ...
program until its launch in 2003. Troeltzsch later became the
Kepler Mission The Kepler space telescope is a disused space telescope launched by NASA in 2009 to discover Earth-sized planets orbiting other stars. Named after astronomer Johannes Kepler, the spacecraft was launched into an Earth-trailing heliocentric orbi ...
program manager at Ball in 2007. Troeltzsch's program management abilities include experience with spacecraft systems engineering and
software integration System integration is defined in engineering as the process of bringing together the component sub- systems into one system (an aggregation of subsystems cooperating so that the system is able to deliver the overarching functionality) and ensurin ...
through all phases of space telescope projects, from contract definition through assembly, launch and on-station operational start up. His past project experience includes the Kepler Mission, Hubble's
Goddard High Resolution Spectrograph The Goddard High Resolution Spectrograph (GHRS or HRS) was an ultraviolet spectrograph installed on the Hubble Space Telescope during its original construction, and it was launched into space as part of that space telescope aboard the Space Shu ...
(GHRS) and its COSTAR Space Telescope corrective optics, as well as the cryogenically-cooled instruments on the
Spitzer Space Telescope The Spitzer Space Telescope, formerly the Space Infrared Telescope Facility (SIRTF), was an infrared space telescope launched in 2003. Operations ended on 30 January 2020. Spitzer was the third space telescope dedicated to infrared astronomy, ...
. Troeltzsch was awarded the
NASA Exceptional Public Service Medal NASA's Exceptional Public Service Medal is a United States government awarded to any non-Government individual or to an individual who was not a Government employee during the period in which the service was performed for sustained performance th ...
for his commitment to the success of the Kepler mission. His education includes a B.Sc. and an M.Sc. in
Aerospace Engineering Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is s ...
, both from the
University of Colorado The University of Colorado (CU) is a system of public universities in Colorado. It consists of four institutions: University of Colorado Boulder, University of Colorado Colorado Springs, University of Colorado Denver, and the University o ...
in 1983 and 1989 respectively, the latter while employed at Ball Aerospace which hired him immediately after the completion of his undergraduate degree.


David Liddle, Chair, Board of Directors

Dr. David Liddle is the foundation's Board Chair and a former technology industry executive and professor of computer science. He also holds the Chair of many boards of directors, including research institutes, in the United States. Liddle is a partner at the venture capital firm U.S. Venture Partners, and is a co-founder and former CEO of both the
Interval Research Corporation Interval Research Corporation was founded in 1992 by Paul Allen and David Liddle. It was a Palo Alto laboratory and technology incubator focusing on consumer product applications and services with a focus on the Internet. A 1997 version of the com ...
and Metaphor Computer Systems, plus a consulting professor of
computer science Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to Applied science, practical discipli ...
at
Stanford University Stanford University, officially Leland Stanford Junior University, is a private research university in Stanford, California. The campus occupies , among the largest in the United States, and enrolls over 17,000 students. Stanford is conside ...
, credited with heading development of the
Xerox Star The Xerox Star workstation, officially named Xerox 8010 Information System, is the first commercial personal computer to incorporate technologies that have since become standard in personal computers, including a bitmapped display, a window-based ...
computer system. He served as an executive at the
Xerox Corporation Xerox Holdings Corporation (; also known simply as Xerox) is an American corporation that sells print and digital document products and services in more than 160 countries. Xerox is headquartered in Norwalk, Connecticut (having moved from St ...
and IBM and currently serves on the board of directors of Inphi Corporation, the ''
New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...
'' and the B612 Foundation. In January 2012, he also joined the board of directors of
SRI International SRI International (SRI) is an American nonprofit scientific research institute and organization headquartered in Menlo Park, California. The trustees of Stanford University established SRI in 1946 as a center of innovation to support economic ...
. Liddle also held the chair of the board of trustees for the
Santa Fe Institute The Santa Fe Institute (SFI) is an independent, nonprofit theoretical research institute located in Santa Fe, New Mexico, United States and dedicated to the multidisciplinary study of the fundamental principles of complex adaptive systems, inclu ...
, a nonprofit theoretical research center, from 1994 to 1999, and served on the U.S.'s
DARPA The Defense Advanced Research Projects Agency (DARPA) is a research and development agency of the United States Department of Defense responsible for the development of emerging technologies for use by the military. Originally known as the A ...
Information, Science and Technology Committee. Additionally, he was Chair of the Computer Science and Telecommunications Board of the
U.S. National Research Council The National Academies of Sciences, Engineering, and Medicine (also known as NASEM or the National Academies) are the collective scientific national academy of the United States. The name is used interchangeably in two senses: (1) as an umbrell ...
due to his work on human-computer interface designs. In a field unrelated to the sciences and technology, Liddle is a
Senior Fellow A fellow is a concept whose exact meaning depends on context. In learned or professional societies, it refers to a privileged member who is specially elected in recognition of their work and achievements. Within the context of higher education ...
of the
Royal College of Art The Royal College of Art (RCA) is a public research university in London, United Kingdom, with campuses in South Kensington, Battersea and White City. It is the only entirely postgraduate art and design university in the United Kingdom. It ...
in London, England. His education includes a B.Sc. in Electrical Engineering from the
University of Michigan , mottoeng = "Arts, Knowledge, Truth" , former_names = Catholepistemiad, or University of Michigania (1817–1821) , budget = $10.3 billion (2021) , endowment = $17 billion (2021)As o ...
and a Ph.D. in
Electrical Engineering and Computer Science Computer Science and Engineering (CSE) is an academic program at many universities which comprises scientific and engineering aspects of computing. CSE is also a term often used in Europe to translate the name of engineering informatics academi ...
from the
University of Toledo The University of Toledo (UToledo or UT) is a public research university in Toledo, Ohio. It is the northernmost campus of the University System of Ohio. The university also operates a Health Science campus, which includes the University of ...
.


Board of directors

As of 2014 the B612 Foundation's board includes Geoffrey Baehr (formerly with
Sun Microsystems Sun Microsystems, Inc. (Sun for short) was an American technology company that sold computers, computer components, software, and information technology services and created the Java programming language, the Solaris operating system, ZFS, t ...
and U.S. Venture Partners), plus Doctors Chapman,
Piet Hut Piet Hut (born September 26, 1952) is a Dutch-American astrophysicist, who divides his time between research in computer simulations of dense stellar systems and broadly interdisciplinary collaborations, ranging from other fields in natural scien ...
, Ed Lu (also CEO, see Leadership, above), David Liddle (Chair, see Leadership, above), and Dan Durda, a planetary scientist.


Rusty Schweickart, co-founder and Chair Emeritus

Russell Louis "Rusty" Schweickart (b. October 25, 1935) is a co-founder of the B612 Foundation and chair emeritus of its board of directors. He is also a former U.S. Apollo astronaut, research scientist, Air Force pilot, plus business and government executive. Schweickart, chosen in NASA's third astronaut group, is best known as the
lunar module The Apollo Lunar Module (LM ), originally designated the Lunar Excursion Module (LEM), was the lunar lander spacecraft that was flown between lunar orbit and the Moon's surface during the United States' Apollo program. It was the first crewed ...
pilot on the
Apollo 9 Apollo 9 (March 313, 1969) was the third human spaceflight in NASA's Apollo program. Flown in low Earth orbit, it was the second crewed Apollo mission that the United States launched via a Saturn V rocket, and was the first flight of the ful ...
mission, the spacecraft's first manned flight test on which he performed the first in-space test of the portable life support system used by the Apollo astronauts who walked on the Moon. Prior to joining NASA, Schweickart was a scientist at the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of th ...
's Experimental Astronomy Laboratory, where he researched upper
atmospheric physics Within the atmospheric sciences, atmospheric physics is the application of physics to the study of the atmosphere. Atmospheric physicists attempt to model Earth's atmosphere and the atmospheres of the other planets using fluid flow equations, chem ...
and became an expert in star tracking and the stabilization of stellar images, a crucial requirement for space navigation. Schweickart's education includes a B.Sc. in
aeronautical engineering Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is sim ...
and an M.Sc. in Aeronautics–Astronautics, both from the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of th ...
(MIT), in 1956 and 1963 respectively. His Master's thesis was on the validation of "theoretical models of stratospheric radiance". After serving as the backup commander of NASA's first manned Skylab mission (the United States' first
space station A space station is a spacecraft capable of supporting a human crew in orbit for an extended period of time, and is therefore a type of space habitat. It lacks major propulsion or landing systems. An orbital station or an orbital space station ...
), he later became Director of User Affairs in their Office of Applications. Schweickart left NASA in 1977 to serve for two years as California governor
Jerry Brown Edmund Gerald Brown Jr. (born April 7, 1938) is an American lawyer, author, and politician who served as the 34th and 39th governor of California from 1975 to 1983 and 2011 to 2019. A member of the Democratic Party, he was elected Secretary of S ...
's assistant for science and technology, and was then appointed by Brown to California's Energy Commission for five and a half years. Schweickart co-founded the
Association of Space Explorers The Association of Space Explorers is a non-profit organization with a membership composed of people who have completed at least one Earth orbit in space (above , as defined by the Fédération Aéronautique Internationale. It was founded in 1985, ...
(ASE) with other astronauts in 1984–85 and chaired the ASE's NEO Committee, producing a benchmark report, ''Asteroid Threats: A Call for Global Response'', and submitting it to the United Nations Committee on the Peaceful Uses of Outer Space (UN COPUOS). He then co-chaired, along with astronaut Dr.
Tom Jones Tom Jones may refer to: Arts and entertainment *Tom Jones (singer) (born 1940), Welsh singer *Tom Jones (writer) (1928–2023), American librettist and lyricist *''The History of Tom Jones, a Foundling'', a novel by Henry Fielding published in 1 ...
, NASA's Advisory Council's Task Force on Planetary Defense. In 2002 he co-founded B612, also serving as its Chair. Schweickart is a Fellow of the
American Astronautical Society Formed in 1954, the American Astronautical Society (AAS) is an independent scientific and technical group in the United States dedicated to the advancement of space science and space exploration. AAS supports NASA The National Aerona ...
, the
International Academy of Astronautics The International Academy of Astronautics (IAA) is an independent non-governmental organization established in Stockholm (Sweden) on August 16, 1960, by Dr. Theodore von Kármán, and recognized by the United Nations in 1996. The IAA has electe ...
and the
California Academy of Sciences The California Academy of Sciences is a research institute and natural history museum in San Francisco, California, that is among the largest museums of natural history in the world, housing over 46 million specimens. The Academy began in 1853 ...
, as well as an Associate Fellow of the
American Institute of Aeronautics and Astronautics The American Institute of Aeronautics and Astronautics (AIAA) is a professional society for the field of aerospace engineering. The AIAA is the U.S. representative on the International Astronautical Federation and the International Council of ...
. Among the honors he's received are the
Federation Aeronautique Internationale A federation (also known as a federal state) is a political entity characterized by a union of partially self-governing provinces, states, or other regions under a central federal government ( federalism). In a federation, the self-governi ...
's De la Vaulx Medal in 1970 for his Apollo 9 flight, both of NASA's Distinguished Service and Exceptional Service medals, and, unusual for an astronaut, an
Emmy Award The Emmy Awards, or Emmys, are an extensive range of awards for artistic and technical merit for the American and international television industry. A number of annual Emmy Award ceremonies are held throughout the calendar year, each with the ...
from the U.S.
National Academy of Television Arts and Sciences The National Academy of Television Arts and Sciences (NATAS) is an American professional service organization founded in 1955 for "the advancement of the arts and sciences of television and the promotion of creative leadership for artistic, edu ...
for transmitting the first live TV pictures from space.


Clark Chapman, co-founder and board member

Clark Chapman is a B612 Board Member and "a planetary scientist whose research has specialized in studies of asteroids and cratering of planetary surfaces, using telescopes, spacecraft, and computers. He is a past Chair of the Division for Planetary Sciences (DPS) of the
American Astronomical Society The American Astronomical Society (AAS, sometimes spoken as "double-A-S") is an American society of professional astronomers and other interested individuals, headquartered in Washington, DC. The primary objective of the AAS is to promote the adv ...
and was the first editor of the ''Journal of Geophysical Research: Planets''. He is a winner of the
Carl Sagan Award for Public Understanding of Science The Carl Sagan Award for Public Understanding of Science is an award presented by the Council of Scientific Society Presidents (CSSP) to individuals who have become “concurrently accomplished as researchers and/or educators, and as widely recogni ...
and has worked on the science teams of the
MESSENGER ''MESSENGER'' was a NASA robotic space probe that orbited the planet Mercury between 2011 and 2015, studying Mercury's chemical composition, geology, and magnetic field. The name is a backronym for "Mercury Surface, Space Environment, Geochem ...
,
Galileo Galileo di Vincenzo Bonaiuti de' Galilei (15 February 1564 – 8 January 1642) was an Italian astronomer, physicist and engineer, sometimes described as a polymath. Commonly referred to as Galileo, his name was pronounced (, ). He was ...
and Near-Earth Asteroid Rendezvous space missions." Chapman has a degree from
Harvard University Harvard University is a private Ivy League research university in Cambridge, Massachusetts. Founded in 1636 as Harvard College and named for its first benefactor, the Puritan clergyman John Harvard, it is the oldest institution of highe ...
and has earned two degrees from the
Massachusetts Institute of Technology The Massachusetts Institute of Technology (MIT) is a private land-grant research university in Cambridge, Massachusetts. Established in 1861, MIT has played a key role in the development of modern technology and science, and is one of th ...
, including his Ph.D., in the fields of
astronomy Astronomy () is a natural science that studies celestial objects and phenomena. It uses mathematics, physics, and chemistry in order to explain their origin and evolution. Objects of interest include planets, moons, stars, nebulae, g ...
,
meteorology Meteorology is a branch of the atmospheric sciences (which include atmospheric chemistry and physics) with a major focus on weather forecasting. The study of meteorology dates back millennia, though significant progress in meteorology did no ...
and the
planetary science Planetary science (or more rarely, planetology) is the scientific study of planets (including Earth), celestial bodies (such as moons, asteroids, comets) and planetary systems (in particular those of the Solar System) and the processes of their ...
s, and also served at the Planetary Science Institute in
Tucson, Arizona , "(at the) base of the black ill , nicknames = "The Old Pueblo", "Optics Valley", "America's biggest small town" , image_map = , mapsize = 260px , map_caption = Interactive map ...
. He is currently on faculty at the
Southwest Research Institute Southwest Research Institute (SwRI), headquartered in San Antonio, Texas, is an independent and nonprofit applied research and development (R&D) organization. Founded in 1947 by oil businessman Tom Slick, it provides contract research and devel ...
of
Boulder, Colorado Boulder is a home rule city that is the county seat and most populous municipality of Boulder County, Colorado, United States. The city population was 108,250 at the 2020 United States census, making it the 12th most populous city in Colora ...
.


Dan Durda, board member

Dr. Daniel David "Dan" Durda (b. October 26, 1965, Detroit, Michigan), is a B612 Board Member and "a principal scientist in the Department of Space Studies of the
Southwest Research Institute Southwest Research Institute (SwRI), headquartered in San Antonio, Texas, is an independent and nonprofit applied research and development (R&D) organization. Founded in 1947 by oil businessman Tom Slick, it provides contract research and devel ...
's (SwRI) Boulder Colorado. He has more than 20 years experience researching the collisional and dynamical evolution of main-belt and near-Earth asteroids, Vulcanoids, Kuiper belt comets, and interplanetary dust." He is the author of 68 journal and scientific articles and has presented his reports and findings at 22 professional symposiums. He has also taught as adjunct professor in the Department of Sciences at Front Range Community College. Durda is an active instrument-rated pilot who has flown numerous aircraft, including high performance
F/A-18 Hornet The McDonnell Douglas F/A-18 Hornet is an all-weather, twin-engine, supersonic, carrier-capable, multirole combat aircraft, designed as both a fighter and attack aircraft (hence the F/A designation). Designed by McDonnell Douglas (now pa ...
s and the
F-104 Starfighter The Lockheed F-104 Starfighter is an American single-engine, supersonic air superiority fighter which was extensively deployed as a fighter-bomber during the Cold War. Created as a day fighter by Lockheed as one of the " Century Series" of ...
s, and "was a 2004 NASA astronaut selection finalist. Dan is one of three SwRI payload specialists who will fly on multiple suborbital spaceflights on Virgin Galactic's Enterprise and XCOR Aerospace's Lynx." His education includes a B.Sc. in astronomy from The University of Michigan, plus an M.Sc. and a Ph.D., both in astronomy at the
University of Florida The University of Florida (Florida or UF) is a public land-grant research university in Gainesville, Florida. It is a senior member of the State University System of Florida, traces its origins to 1853, and has operated continuously on its ...
, in 1987, 1989 and 1993 respectively. Besides winning the University of Florida's Kerrick Prize "for outstanding contributions in astronomy", Asteroid 6141 Durda is named in his honour.


Strategic advisers

As of July 2014, the Foundation has taken on over twenty key advisers drawn from the sciences, the space industry and other professional fields. Their goals are to provide both advice and critiques, and assist in several other facets of the Sentinel Mission. Included among them are: Dr. Alexander Galitsky, a former Soviet computer scientist and B612 Founding Circle adviser; British
Astronomer Royal Astronomer Royal is a senior post in the Royal Households of the United Kingdom. There are two officers, the senior being the Astronomer Royal dating from 22 June 1675; the junior is the Astronomer Royal for Scotland dating from 1834. The post ...
, cosmologist and astrophysicist Lord Martin Rees, the Baron Rees of Ludlow; U.S. ''
Star Trek ''Star Trek'' is an American science fiction media franchise created by Gene Roddenberry, which began with the eponymous 1960s television series and quickly became a worldwide pop-culture phenomenon. The franchise has expanded into vari ...
'' director
Alexander Singer Alexander Singer (born 18 April 1928, in New York City, New York, died 28 December 2020) was an American director. He began his career behind the camera in 1951 as a cinematographer on the short documentary ''Day of the Fight'', directed by his ...
; U.S. science journalist and writer
Andrew Chaikin Andrew L. Chaikin (born June 24, 1956) is an American author, speaker and science journalist. He lives in Vermont. He is the author of '' A Man on the Moon'', a detailed description of the Apollo missions to the Moon. This book formed the bas ...
; British astrophysicist and songwriter Dr.
Brian May Brian Harold May (born 19 July 1947) is an English guitarist, singer, songwriter, and astrophysicist, who achieved worldwide fame as the lead guitarist of the rock band Queen. May was a co-founder of Queen with lead singer Freddie Mercury and ...
; U.S. astronomer
Carolyn Shoemaker Carolyn Jean Spellmann Shoemaker (June 24, 1929 – August 13, 2021) was an American astronomer and a co-discoverer of Comet Shoemaker–Levy 9. She discovered 32 comets (then a record for the most by an individual) and more than 500 astero ...
; U.S. astrophysicist Dr.
David Brin Glen David Brin (born October 6, 1950) is an American scientist and author of science fiction. He has won the Hugo,Dumitru Prunariu; U.S. physicist and mathematician Dr.
Freeman Dyson Freeman John Dyson (15 December 1923 – 28 February 2020) was an English-American theoretical physicist and mathematician known for his works in quantum field theory, astrophysics, random matrices, mathematical formulation of quantum m ...
; U.S. astrophysicist and former Harvard-Smithsonian Center for Astrophysics head Dr.
Irwin Shapiro Irwin Ira Shapiro is an American astrophysicist and Timken University Professor at Harvard University. He has been a professor at Harvard since 1982. He was the director of the Center for Astrophysics Harvard & Smithsonian from 1982 to 20 ...
; U.S. film director Jerry Zucker; British-U.S. balloonist
Julian Nott Julian Franklin Keith Nott (born 23 August 1960) is a British composer and conductor, mostly of animated films. He is known for his work on ''Wallace and Gromit'' and ''Peppa Pig''. Biography Nott was born in Marylebone, London, and was edu ...
; Dutch astrophysist and B612 co-founder Dr.
Piet Hut Piet Hut (born September 26, 1952) is a Dutch-American astrophysicist, who divides his time between research in computer simulations of dense stellar systems and broadly interdisciplinary collaborations, ranging from other fields in natural scien ...
; former U.S. Ambassador
Philip Lader Philip Lader, is a former US Ambassador to the Court of St. James’s and former Chairman of WPP plc, the global advertising/communications services firm (including Ogilvy & Mather, J. Walter Thompson, Young & Rubicam, Grey, Hill & Knowlton, B ...
; British cosmologist and astrophysicist Dr.
Roger Blandford Roger David Blandford, FRS, FRAS (born 1949) is a British theoretical astrophysicist, best known for his work on black holes. Early life Blandford was born in Grantham, England and grew up in Birmingham. Career Blandford is famous in the as ...
; U.S. writer and
Whole Earth Catalog The ''Whole Earth Catalog'' (WEC) was an American counterculture magazine and product catalog published by Stewart Brand several times a year between 1968 and 1972, and occasionally thereafter, until 1998. The magazine featured essays and articl ...
founder
Stewart Brand Stewart Brand (born December 14, 1938) is an American writer, best known as editor of the ''Whole Earth Catalog''. He founded a number of organizations, including The WELL, the Global Business Network, and the Long Now Foundation. He is the auth ...
; U.S. media head
Tim O'Reilly Tim O'Reilly (born 6 June 1954) is the founder of O'Reilly Media (formerly O'Reilly & Associates). He popularised the terms open source and Web 2.0. Education and early life Born in County Cork, Ireland, Tim O'Reilly moved to San Francisco, C ...
; and former U.S. NASA astronaut Dr.
Tom Jones Tom Jones may refer to: Arts and entertainment *Tom Jones (singer) (born 1940), Welsh singer *Tom Jones (writer) (1928–2023), American librettist and lyricist *''The History of Tom Jones, a Foundling'', a novel by Henry Fielding published in 1 ...
.


Tom Jones, strategic adviser

Dr. Thomas David "Tom" Jones (b. January 22, 1955) is a strategic adviser to B612, member of the
NASA Advisory Council The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeeding th ...
and a former U.S. astronaut and planetary scientist who has studied asteroids for
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
, engineered intelligence-gathering systems for the CIA, and helped develop advanced mission concepts to explore the Solar System. In his 11 years with NASA he flew on four
Space Shuttle The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program n ...
missions, logging a total of 53 days in space. His flight time included three spacewalks to install the centerpiece science module of the
International Space Station The International Space Station (ISS) is the largest Modular design, modular space station currently in low Earth orbit. It is a multinational collaborative project involving five participating space agencies: NASA (United States), Roscosmos ( ...
(ISS). His publications include ''Planetology: Unlocking the Secrets of the Solar System.'' After graduating from the U.S. Air Force Academy where he received his B.Sc. in 1977, Jones earned a Ph.D. in
Planetary Science Planetary science (or more rarely, planetology) is the scientific study of planets (including Earth), celestial bodies (such as moons, asteroids, comets) and planetary systems (in particular those of the Solar System) and the processes of their ...
s from the
University of Arizona The University of Arizona (Arizona, U of A, UArizona, or UA) is a Public university, public Land-grant university, land-grant research university in Tucson, Arizona. Founded in 1885 by the 13th Arizona Territorial Legislature, it was the first ...
in 1988. His research interests included the remote sensing of asteroids, meteorite spectroscopy, and applications of space resources. In 1990 he joined
Science Applications International Corporation Science Applications International Corporation (SAIC), Inc. is an American technology company headquartered in Reston, Virginia that provides government services and information technology support. History The original SAIC was created in 19 ...
in Washington, D.C. as a senior scientist. Dr. Jones performed advanced program planning for NASA's
Goddard Space Flight Center The Goddard Space Flight Center (GSFC) is a major NASA space research laboratory located approximately northeast of Washington, D.C. in Greenbelt, Maryland, United States. Established on May 1, 1959 as NASA's first space flight center, GSFC empl ...
's Solar System Exploration Division. His work there included the investigation of future robotic missions to Mars, asteroids, and the outer Solar System. After a year of training following his selection by NASA he became an astronaut in July 1991. In 1994 he flew as mission specialists on successive flights of various
Space Shuttle The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program n ...
s, running science operations on the "night shift" during
STS-59 STS-59 was a Space Shuttle program mission that took place in 1994. The launch was chronicled by the 1994 Discovery Channel special about the Space Shuttle program. Crew Mission highlights 9 April ''Endeavour'' began its sixth mission on t ...
, successfully deploying and retrieving two science satellites. While helping set a shuttle mission endurance record of nearly 18 days in orbit, Jones used Columbia's robotic
Canadarm Canadarm or Canadarm1 (officially Shuttle Remote Manipulator System or SRMS, also SSRMS) is a series of robotic arms that were used on the Space Shuttle orbiters to deploy, manoeuvre, and capture payloads. After the Space Shuttle ''Columbia ...
to release the Wake Shield satellite and later grapple it from orbit. His last space flight was in February 2001, helping to deliver the U.S. Destiny Laboratory Module to the ISS where he helped install the laboratory module in a series of three space walks lasting over 19 hours. That installation marked the start of onboard scientific research on the ISS. Among his honors are NASA's medals and awards for Space Flight, Exceptional Service and Outstanding Leadership, plus the
Federation Aeronautique Internationale A federation (also known as a federal state) is a political entity characterized by a union of partially self-governing provinces, states, or other regions under a central federal government ( federalism). In a federation, the self-governi ...
's (FAI) Komarov Diploma and a NASA Graduate Student Research Fellowship.


Piet Hut, co-founder and strategic adviser

Dr. Piet Hut (b. September 26, 1952, Utrecht, The Netherlands) is a co-founder of the B612 Foundation, one of its strategic advisers, and a
Dutch Dutch commonly refers to: * Something of, from, or related to the Netherlands * Dutch people () * Dutch language () Dutch may also refer to: Places * Dutch, West Virginia, a community in the United States * Pennsylvania Dutch Country People E ...
astrophysicist, who divides his time between research in computer simulations of dense stellar systems and broadly interdisciplinary collaborations, ranging from fields in
natural science Natural science is one of the branches of science concerned with the description, understanding and prediction of natural phenomena, based on empirical evidence from observation and experimentation. Mechanisms such as peer review and repeatab ...
to
computer science Computer science is the study of computation, automation, and information. Computer science spans theoretical disciplines (such as algorithms, theory of computation, information theory, and automation) to Applied science, practical discipli ...
,
cognitive psychology Cognitive psychology is the scientific study of mental processes such as attention, language use, memory, perception, problem solving, creativity, and reasoning. Cognitive psychology originated in the 1960s in a break from behaviorism, which ...
and
philosophy Philosophy (from , ) is the systematized study of general and fundamental questions, such as those about existence, reason, knowledge, values, mind, and language. Such questions are often posed as problems to be studied or resolved. ...
. He is currently Program Head in
Interdisciplinary Studies Interdisciplinarity or interdisciplinary studies involves the combination of multiple academic disciplines into one activity (e.g., a research project). It draws knowledge from several other fields like sociology, anthropology, psychology, ec ...
at the
Institute for Advanced Study The Institute for Advanced Study (IAS), located in Princeton, New Jersey, in the United States, is an independent center for theoretical research and intellectual inquiry. It has served as the academic home of internationally preeminent schola ...
in
Princeton, New Jersey Princeton is a municipality with a borough form of government in Mercer County, in the U.S. state of New Jersey. It was established on January 1, 2013, through the consolidation of the Borough of Princeton and Princeton Township, both of w ...
, former home to
Albert Einstein Albert Einstein ( ; ; 14 March 1879 – 18 April 1955) was a German-born theoretical physicist, widely acknowledged to be one of the greatest and most influential physicists of all time. Einstein is best known for developing the theor ...
. Hut's specialization is in "stellar and planetary dynamics; many of his more than two hundred articles are written in collaboration with colleagues from different fields, ranging from particle physics, geophysics and paleontology to computer science, cognitive psychology and philosophy." Dr. Hut was an early adviser to Lu and served as a founding member of the B612 Foundation's board of directors. Hut has held positions in a number of faculties, including the Institute for Theoretical Physics,
Utrecht University Utrecht University (UU; nl, Universiteit Utrecht, formerly ''Rijksuniversiteit Utrecht'') is a public research university in Utrecht, Netherlands. Established , it is one of the oldest universities in the Netherlands. In 2018, it had an enrollme ...
(1977–1978); the Astronomical Institute at the
University of Amsterdam The University of Amsterdam (abbreviated as UvA, nl, Universiteit van Amsterdam) is a public research university located in Amsterdam, Netherlands. The UvA is one of two large, publicly funded research universities in the city, the other being ...
(1978–1981); Astronomy Department of the
University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant un ...
(1984–1985) and in the Institute for Advanced Study, in Princeton, N.J. (1981–present). He has held honors, functions, fellowships and memberships in almost 150 different professional organizations, universities and conferences, and published over 225 papers and articles in scientific journals and symposiums, including his first in 1976 on "The Two-Body problem with a Decreasing Gravitational Constant". In 2014 he became a strategic adviser to the B612 Foundation. His education includes an M.Sc. from the University of Utrecht and a double Ph.D. in
particle physics Particle physics or high energy physics is the study of fundamental particles and forces that constitute matter and radiation. The fundamental particles in the universe are classified in the Standard Model as fermions (matter particles) an ...
and
astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the h ...
from the University of Amsterdam in 1977 and 1981 respectively. He is the namesource for Asteroid 17031 Piethut honoring his work in planetary dynamics and for his co-founding of B612.


Dumitru Prunariu, strategic adviser

Dr. Dumitru-Dorin Prunariu (, b. 27 September 1952) is a retired
Romania Romania ( ; ro, România ) is a country located at the crossroads of Central Europe, Central, Eastern Europe, Eastern, and Southeast Europe, Southeastern Europe. It borders Bulgaria to the south, Ukraine to the north, Hungary to the west, S ...
n
cosmonaut An astronaut (from the Ancient Greek (), meaning 'star', and (), meaning 'sailor') is a person trained, equipped, and deployed by a human spaceflight program to serve as a commander or crew member aboard a spacecraft. Although generally r ...
and a strategic advisor to the B612 Foundation. In 1981 he flew an eight-day mission to the Soviet
Salyut 6 Salyut 6 (russian: Салют-6; lit. Salute 6), DOS-5, was a Soviet orbital space station, the eighth station of the Salyut programme. It was launched on 29 September 1977 by a Proton rocket. Salyut 6 was the first space station to recei ...
space station A space station is a spacecraft capable of supporting a human crew in orbit for an extended period of time, and is therefore a type of space habitat. It lacks major propulsion or landing systems. An orbital station or an orbital space station ...
where he and his crewmates completed experiments in
astrophysics Astrophysics is a science that employs the methods and principles of physics and chemistry in the study of astronomical objects and phenomena. As one of the founders of the discipline said, Astrophysics "seeks to ascertain the nature of the h ...
,
space radiation Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. They are one of the greatest barriers ...
,
space technology Space technology is technology for use in outer space, in travel (''astronautics'') or other activities beyond Earth's atmosphere, for purposes such as spaceflight, space exploration, and Earth observation. Space technology includes space vehicles ...
, and
space medicine Space medicine is the practice of medicine on astronauts in outer space whereas astronautical hygiene is the application of science and technology to the prevention or control of exposure to the hazards that may cause astronaut ill health. Bot ...
. He received the Hero of the Socialist Republic of Romania, the
Hero of the Soviet Union The title Hero of the Soviet Union (russian: Герой Советского Союза, translit=Geroy Sovietskogo Soyuza) was the highest distinction in the Soviet Union, awarded together with the Order of Lenin personally or collectively for ...
, the "Hermann Oberth Gold Medal", the "Golden Star Medal" and the
Order of Lenin The Order of Lenin (russian: Орден Ленина, Orden Lenina, ), named after the leader of the Russian October Revolution, was established by the Central Executive Committee on April 6, 1930. The order was the highest civilian decoration ...
. Prunariu is a member of the
International Academy of Astronautics The International Academy of Astronautics (IAA) is an independent non-governmental organization established in Stockholm (Sweden) on August 16, 1960, by Dr. Theodore von Kármán, and recognized by the United Nations in 1996. The IAA has electe ...
, the Romanian National
COSPAR The Committee on Space Research (COSPAR) was established on October 3, 1958 by the International Council for Scientific Unions (ICSU). Among COSPAR's objectives are the promotion of scientific research in space on an international level, wi ...
Committee, and the
Association of Space Explorers The Association of Space Explorers is a non-profit organization with a membership composed of people who have completed at least one Earth orbit in space (above , as defined by the Fédération Aéronautique Internationale. It was founded in 1985, ...
(ASE). In 1993, until 2004, he was the permanent representative of the ASE at the United Nations Committee on the Peaceful Uses of Outer Space (UN COPUOS) and has represented Romania at COPUOS sessions since 1992. He also became the vice-president of the International Institute for Risk, Security and Communication Management (EURISC), and from 1998 to 2004 the president of the
Romanian Space Agency The Romanian Space Agency (ROSA; ) is a public institution with extra-budgetary funding which coordinates Romania's national space technology research programs and space research-related activities. ROSA was founded in 1991 and is subordinated t ...
. In 2000 he was appointed Associate Professor on Geopolitics within the Faculty of International Business and Economics, Academy of Economic Studies in Bucharest and in 2004 he was elected COPUOS's Chairman of the Scientific and Technical Subcommittee. He was then elected as COPUOS's top level chairman, serving from 2010 to 2012, and also elected as the president of the ASE with a three-year mandate. Prunariu has co-authored several books on space flight and both presented and published numerous scientific papers. His education includes a degree in
aerospace engineering Aerospace engineering is the primary field of engineering concerned with the development of aircraft and spacecraft. It has two major and overlapping branches: aeronautical engineering and astronautical engineering. Avionics engineering is s ...
in 1976 from the
Politehnica University of Bucharest Politehnica University of Bucharest ( ro, Universitatea Politehnica din București) is a technical university in Bucharest, Romania. 200 years of activity have been celebrated lately, as the university was founded in 1818.space flight dynamics.


Deflection methods

A number of methods have been devised to 'deflect' an asteroid or other NEO away from an Earth-impacting trajectory, so that it can entirely avoid entering the Earth's atmosphere. Given sufficient advance lead time, a change to the body's velocity of as little as one centimetre per second will allow it to avoid hitting the Earth. Proposed and experimental deflection methods include ion beam shepherds, focused
solar energy Solar energy is radiant light and heat from the Sun that is harnessed using a range of technologies such as solar power to generate electricity, solar thermal energy (including solar water heating), and solar architecture. It is an essen ...
and the use of mass drivers or
solar sail Solar sails (also known as light sails and photon sails) are a method of spacecraft propulsion using radiation pressure exerted by sunlight on large mirrors. A number of spaceflight missions to test solar propulsion and navigation have been ...
s. Initiating a nuclear explosive device above, on, or slightly beneath, the surface of a threatening NEO is a potential deflection option, with the optimal detonation height dependent upon the NEO's composition and size. In the case of a threatening "rubble pile", the stand off, or detonation height above the surface configuration has been put forth as a means to prevent the potential fracturing of the rubble pile. However, given sufficient advance warning of an asteroid's impact, most scientists avoid endorsing explosive deflection due to the number of potential issues involved. Other methods that can accomplish NEO deflections include:


Gravity tractor

An alternative to an explosive deflection is to move a dangerous asteroid slowly and consistently over time. The effect of a tiny constant thrust can accumulate to deviate an object sufficiently from its predicted course. In 2005 Drs. Ed Lu and Stanley G. Love proposed using a large, heavy unmanned spacecraft hovering over an asteroid to gravitationally pull the latter into a non-threatening orbit. The method will function due to the spacecraft's and asteroid's mutually
gravitational attraction In physics, gravity () is a fundamental interaction which causes mutual attraction between all things with mass or energy. Gravity is, by far, the weakest of the four fundamental interactions, approximately 1038 times weaker than the strong ...
. When the spacecraft counters the gravitational attraction towards the asteroid by the use of, for example, an ion thruster engine, the net effect is that the asteroid is accelerated, or moved, towards the spacecraft and thus slowly deflected from the orbital path that will lead it to a collision with Earth. While slow, this method has the advantage of working irrespective of an asteroid's composition. It would even be effective on a
comet A comet is an icy, small Solar System body that, when passing close to the Sun, warms and begins to release gases, a process that is called outgassing. This produces a visible atmosphere or coma, and sometimes also a tail. These phenomena ...
, loose
rubble pile In astronomy, a rubble pile is a celestial body that is not a monolith, consisting instead of numerous pieces of rock that have coalesced under the influence of gravity. Rubble piles have low density because there are large cavities between the ...
, or an object spinning at a high rate. However, a gravity tractor would likely have to spend several years stationed beside and tugging on the body to be effective. The
Sentinel Space Telescope The Sentinel Space Telescope was a space observatory to be developed by Ball Aerospace & Technologies for the B612 Foundation. The B612 Foundation is dedicated to protecting the Earth from dangerous asteroid strikes and Sentinel was to be the F ...
's mission is designed to provide the required advance lead time. According to Rusty Schweickart, the gravitational tractor method also has a controversial aspect because during the process of changing an asteroid's trajectory, the point on Earth where it would most likely hit would slowly be shifted temporarily across the face of the planet. It means the threat for the entire planet might be minimized at a temporary cost of some specific states' security. Schweickart recognizes that choosing the manner and direction the asteroid should be "dragged" may be a difficult international decision, and one that should be made through the United Nations. An early
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
analysis of deflection alternatives in 2007, stated: "'Slow push' mitigation techniques are the most expensive, have the lowest level of technical readiness, and their ability to both travel to and divert a threatening NEO would be limited unless mission durations of many years to decades are possible." But a year later in 2008 the B612 Foundation released a technical evaluation of the gravity tractor concept, produced on contract to NASA. Their report confirmed that a transponder-equipped tractor "with a simple and robust spacecraft design" can provide the needed towing service for a 140-meters-diameter equivalent, Hayabusa-shaped asteroid or other NEO.


Kinetic impact

When the asteroid is still far from Earth, a means of deflecting the asteroid is to directly alter its
momentum In Newtonian mechanics, momentum (more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object. It is a vector quantity, possessing a magnitude and a direction. If is an object's mass ...
by colliding a spacecraft with the asteroid. The further away from the Earth, the smaller the required impact force becomes. Conversely, the closer a dangerous
near-Earth Object A near-Earth object (NEO) is any small Solar System body whose orbit brings it into proximity with Earth. By convention, a Solar System body is a NEO if its closest approach to the Sun (Apsis, perihelion) is less than 1.3 astronomical unit ...
(NEO) is to Earth at the time of its discovery, the greater the force that is required to make it deviate from its collision trajectory with the Earth. Closer to Earth, the impact of a massive spacecraft is a possible solution to a pending NEO impact. In 2005, in the wake of the successful U.S. mission that crashed its Deep Impact probe into Comet Tempel 1, China announced its plan for a more advanced version: the landing of a spacecraft probe on a small NEO in order to push it off course. In the 2000s the
European Space Agency , owners = , headquarters = Paris, Île-de-France, France , coordinates = , spaceport = Guiana Space Centre , seal = File:ESA emblem seal.png , seal_size = 130px , image = Views in the Main Control Room (120 ...
(ESA) began studying the design of a space mission named Don Quijote, which, if flown, would have been the first intentional asteroid deflection mission ever designed. ESA's
Advanced Concepts Team The Advanced Concepts Team is a group of scientists, researchers and young graduates that perform multidisciplinary research within the European Space Agency. Located at the European Space Research and Technology Centre, in the Netherlands, the ...
also demonstrated theoretically that a deflection of
99942 Apophis 99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April&nb ...
could be achieved by sending a spacecraft weighing less than a tonne to impact against the asteroid. ESA had originally identified two NEOs as possible targets for its Quijote mission: and
(10302) 1989 ML (10302) 1989 ML is an as yet unnamed near-Earth asteroid. It is approximately 0.6 km in diameter. An Amor asteroid, it orbits between Earth and Mars. It is an X-type asteroid, so its surface composition is yet unknown. It was discovered ...
. Neither asteroid represents a threat to Earth. In a subsequent study, two different possibilities were selected: the
Amor asteroid The Amor asteroids are a group of near-Earth asteroids named after the archetype object 1221 Amor . The orbital perihelion of these objects is close to, but greater than, the orbital aphelion of Earth (i.e., the objects do not cross Earth's orbi ...
2003 SM84 and
99942 Apophis 99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April&nb ...
; the latter is of particular significance to Earth as it will make a close approach in 2029 and 2036. In 2005, ESA announced at the 44th annual Lunar and Planetary Science Conference that its mission would be combined into a joint ESA-NASA Asteroid Impact & Deflection Assessment (AIDA) mission, proposed for 2019–2022. The target selected for AIDA will be a
binary asteroid A binary asteroid is a system of two asteroids orbiting their common barycenter. The binary nature of 243 Ida was discovered when the Galileo spacecraft flew by the asteroid in 1993. Since then numerous binary asteroids and several triple a ...
, so that the deflection effect could also be observed from Earth by timing the rotation period of the binary pair. AIDA's new target, a component of binary asteroid
65803 Didymos 65803 Didymos (provisional designation ) is a sub-kilometer asteroid and binary system that is classified as a potentially hazardous asteroid and near-Earth object of the Apollo group. The asteroid was discovered in 1996 by the Spacewatch surv ...
, will be impacted at a velocity of 22,530 km/h (14,000 mph) A
NASA The National Aeronautics and Space Administration (NASA ) is an independent agency of the US federal government responsible for the civil space program, aeronautics research, and space research. NASA was established in 1958, succeedin ...
analysis of deflection alternatives, conducted in 2007, stated: "Non-nuclear kinetic impactors are the most mature approach and could be used in some deflection/mitigation scenarios, especially for NEOs that consist of a single small, solid body."


Funding status

The B612 Foundation is a California
501(c)(3) A 501(c)(3) organization is a United States corporation, trust, unincorporated association or other type of organization exempt from federal income tax under section 501(c)(3) of Title 26 of the United States Code. It is one of the 29 types of ...
non-profit, private foundation. Financial contributions to the B612 Foundation are tax-exempt in the United States. Its principal offices are in
Mill Valley, California Mill Valley is a city in Marin County, California, Marin County, California, United States, located about north of San Francisco via the Golden Gate Bridge and from Napa Valley. The population was 14,231 at the 2020 United States Census, 2020 ...
; they were previously located in Tiburon, California. Fund raising has not gone well for B612 as of June 2015. With an overall goal to raise for the project, the foundation raised only approximately in 2012 and in 2013.


Foundation name

The B612 Foundation is named in tribute to the home asteroid of the
eponym An eponym is a person, a place, or a thing after whom or which someone or something is, or is believed to be, named. The adjectives which are derived from the word eponym include ''eponymous'' and ''eponymic''. Usage of the word The term ''epon ...
ous hero of
Antoine de Saint-Exupéry Antoine Marie Jean-Baptiste Roger, comte de Saint-Exupéry, simply known as Antoine de Saint-Exupéry (, , ; 29 June 1900 – 31 July 1944), was a French writer, poet, aristocrat, journalist and pioneering aviator. He became a laureate of s ...
's best-selling philosophical fable of ''Le Petit Prince'' (''
The Little Prince ''The Little Prince'' (french: Le Petit Prince, ) is a novella by French aristocrat, writer, and military pilot Antoine de Saint-Exupéry. It was first published in English and French in the United States by Reynal & Hitchcock in April 1943 an ...
''). In aviation's early pioneer years of the 1920s, Saint-Exupéry made an emergency landing on top of an African mesa covered with crushed white limestone seashells. Walking around in the moonlight he kicked a black rock and soon deduced it was a meteorite that had fallen from space. That experience later contributed, in 1943, to his literary creation of Asteroid B-612 in his philosophical fable of a little prince fallen to Earth, with the home Minor planet, planetoid's name having been adapted from one of the mail planes Saint-Exupéry once flew, bearing the registration marking A-612. Also inspired by the story is an asteroid discovered in 1993, though not identified as posing any threat to Earth, named ''46610 Bésixdouze'' (the numerical part of its designation represented in hexadecimal as 'B612', while the textual part is French for "B six twelve"). As well, a small Minor-planet moon, asteroid moon, Petit-Prince (moon), ''Petit-Prince'', discovered in 1998 is named in part after ''The Little Prince''.


See also

* 1490 Ch'ing-yang event *
99942 Apophis 99942 Apophis is a near-Earth asteroid and potentially hazardous asteroid with a diameter of that caused a brief period of concern in December 2004 when initial observations indicated a probability up to 2.7% that it would hit Earth on April&nb ...
* Asteroid impact prediction * Asteroid impact avoidance * Asteroid Day * Asteroid Terrestrial-impact Last Alert System (ATLAS) * Deep Space Industries * Gravity tractor * List of impact craters on Earth * List of meteor air bursts * NEOShield * Near Earth Object Surveillance Satellite (NEOS Sat) * Planetary Resources * Potentially hazardous object * Spaceguard * Spaceguard Foundation *
Tunguska event The Tunguska event (occasionally also called the Tunguska incident) was an approximately 12- megaton explosion that occurred near the Podkamennaya Tunguska River in Yeniseysk Governorate (now Krasnoyarsk Krai), Russia, on the morning of June 3 ...
* United Nations Committee on the Peaceful Uses of Outer Space (UN COPUOS)


References

Notes Citations


Further reading

* Lewis, John S
''Comet And Asteroid Impact Hazards On A Populated Earth: Computer Modeling, Volume 1''
Academic Press, 2000, , * Powell, Corey S
"How to Deflect a Killer Asteroid: Researchers Come Up With Contingency Plans That Could Help Our Planet Dodge A Cosmic Bullet"
''Discover (magazine), Discover'', September 18, 2013, pp. 58–60 (subscription). * Schweickart, Lu, Hut and Chapman
"The Asteroid Tugboat: To Prevent An Asteroid From Hitting Earth, A Space Tug Equipped With Plasma Engines Could Give It A Push"
October 13, 2003, ''Scientific American'' * Steel, Duncan
''Rogue Asteroids and Doomsday Comets: The Search for the Million Megaton Menace That Threatens Life on Earth''
Wiley & Sons, 1995, [1997], , .


External links

*
B612 Foundation: early website homepage
(archived)
B612 Foundation: Sentinel Mission Factsheet (Feb. 2013, PDF)

Dr. Ed Lu at TEDxMarin: Changing the Course of the Solar System
(video, 14:04)
''NBC Nightly News'': Early-Warning Telescope Could Detect Dangerous Asteroids
broadcast April 22, 2014 (video, 2:27)
Defending Earth from Asteroids with Neil deGrasse Tyson
public presentation and moderated panel discussion with members of the
Association of Space Explorers The Association of Space Explorers is a non-profit organization with a membership composed of people who have completed at least one Earth orbit in space (above , as defined by the Fédération Aéronautique Internationale. It was founded in 1985, ...
and the B612 Foundation, at the American Museum of Natural History, New York City, October 25, 2013 (video, 58:03)
NEO Threat Detection and Warning: Plans for an International Asteroid Warning Network
Presentation to the United Nations Committee on the Peaceful Uses of Outer Space (UN COPUOS) by Dr. Timothy Spahr, Director,
Minor Planet Center The Minor Planet Center (MPC) is the official body for observing and reporting on minor planets under the auspices of the International Astronomical Union (IAU). Founded in 1947, it operates at the Smithsonian Astrophysical Observatory. Function T ...
, Smithsonian Astrophysical Observatory, February 18, 2013 (PDF)
Dr. Ed Lu Congressional Testimony
Washington, D.C., March 20, 2013, United States House Science Subcommittee on Space, United States Senate Sub-Committee on Science and Space: "Assessing the Risks, Impacts and Solutions for Space Threats" (video, 23:49) * (DVD, video, 53:24). Also viewable (within some countries) as
Rusty's Talk: Dinosaur Syndrome Avoidance Project - How Gozit?
a July 17, 2014 presentation before an audience at NASA's
Ames Research Center The Ames Research Center (ARC), also known as NASA Ames, is a major NASA research center at Moffett Federal Airfield in California's Silicon Valley. It was founded in 1939 as the second National Advisory Committee for Aeronautics (NACA) labo ...
's Director's Colloquium, addressing the status of the three essential elements to avoiding catastrophic asteroid impacts (video, 55:34) {{Portal bar, Society, Earth sciences, Astronomy, Stars, Spaceflight, Outer space, Solar System Charities based in California Planetary defense organizations Antoine de Saint-Exupéry Non-profit organizations based in the San Francisco Bay Area Mountain View, California Mill Valley, California Science and technology in the San Francisco Bay Area Planetary science Organizations established in 2002 2002 establishments in the United States Astronomical surveys Scientific research foundations in the United States Articles containing video clips Space science organizations Rusty Schweickart