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Coordinated Lunar Time
Coordinated Lunar Time or LTC is a proposed primary lunar time standard for the Moon. In early April 2024, NASA was asked by the White House to work alongside domestic and international agencies for the purpose of establishing a unified standard time for the Moon and other celestial bodies by 2026. The White House's request, led by the Office of Science and Technology Policy, called for a "Coordinated Lunar Time", which was first proposed by the European Space Agency in early 2023. Currently, the time on the Moon is different for each country involved. As a result, activities on the Moon are coordinated using the time zone of where a mission's headquarters is based. For example, the Apollo missions utilized the Central Time Zone (CDT) as the missions were controlled from Houston, Texas. History As part of an ongoing global billionaire space race and a wider international space race between the United States and China, a need exists for a universal time-keeping benchmark so that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lunar Time
Timekeeping on the Moon is an issue of synchronized human activity on the Moon and contact with such. The two main differences to timekeeping on Earth is the length of a day on the Moon, being the lunar day or lunar month, observable from Earth as the lunar phases, and the differences between Earth and the Moon of how differently fast time progresses, with 24 hours on the Moon being 58.7 orders of magnitude (time), microseconds (0.0000587 seconds) faster, resulting from the different masses of the Moon and Earth, the effect being called gravitational time dilation. As of early 2024, there is no lunar time standard. Instead, the time on the Moon is different for each country involved. Thus, American activities on the Moon run on the time zone of their mission control centre, while Chinese activities on the Moon run on China Standard Time. As more countries are active on the Moon and interact with each other, a different, unified system will be needed. In 2024, the White House as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artemis Program
The Artemis program is a robotic and human Moon exploration program led by the United States' National Aeronautics and Space Administration (NASA) along with three partner agencies: European Space Agency (ESA), Japan Aerospace Exploration Agency (JAXA), and Canadian Space Agency (CSA). The Artemis program intends to reestablish a human presence on the Moon for the first time since the Apollo 17 mission in 1972. The major components of the program are the Space Launch System (SLS), Orion spacecraft, Lunar Gateway space station and the commercial Human Landing Systems. The program's long-term goal is to establish a permanent base camp on the Moon and facilitate human missions to Mars. The Artemis program is a collaboration of government space agencies and private spaceflight companies, bound together by the Artemis Accords and supporting contracts. As of July 2022, twenty-one countries have signed the accords, including traditional U.S. space partners (such as the Europe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Exploration Of The Moon
The physical exploration of the Moon began when '' Luna 2'', a space probe launched by the Soviet Union, made an impact on the surface of the Moon on September 14, 1959. Prior to that the only available means of exploration had been observation from Earth. The invention of the optical telescope brought about the first leap in the quality of lunar observations. Galileo Galilei is generally credited as the first person to use a telescope for astronomical purposes; having made his own telescope in 1609, the mountains and craters on the lunar surface were among his first observations using it. NASA's Apollo program was the only program to successfully land humans on the Moon, which it did six times. The first landing took place in 1969, when Apollo 11 astronauts Buzz Aldrin and Neil Armstrong placed scientific instruments and returned lunar samples to Earth. The first unmanned landing on the far side of the Moon was made by the Chinese spacecraft Chang'e 4 in early 2019, whi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timekeeping On Mars
Though no standard exists, numerous calendars and other timekeeping approaches have been proposed for the planet Mars. The most commonly seen in the scientific literature denotes the time of year as the number of degrees from the northern vernal equinox, and increasingly there is use of numbering the Martian years beginning at the equinox that occurred April 11, 1955.). Mars has an axial tilt and a rotation period similar to those of Earth. Thus, it experiences seasons of spring, summer, autumn and winter much like Earth. A sol, or Martian day, is less than an hour longer than an Earth day. A Mars year is almost twice as long as Earth's, though its orbital eccentricity is considerably larger, which causes those seasons to vary significantly in length. Sols The average length of a Martian sidereal day is (88,642.663 seconds based on SI units), and the length of its solar day is (88,775.244 seconds). The corresponding values for Earth are currently and , respectively ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LunaNet
LunaNet is a NASA and ESA project and proposed data network aiming to provide a "Lunar Internet" for cis-lunar spacecraft and installations. It will be able to store-and-forward data to provide a Delay/Disruption Tolerant Network (DTN). The objective is to avoid needing to preschedule data communications back to Earth. LunaNet will also offer navigation services, eg. for orbit determination, and navigation on the lunar surface. Draft interoperability specifications have been issued. The LunaNet Interoperability Specification (LNIS) is the document which publishes the LunaNet standard. LNIS version 4 was published online in September 12, 2022. LNIS version 5 draft for review was provided online for comment late 2023. * NASA's instantiation of LunaNet is called Lunar Communication Relay and Navigation System (LCRNS). [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cislunar
Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, predominantly a plasma of hydrogen and helium, as well as electromagnetic radiation, magnetic fields, neutrinos, dust, and cosmic rays. The baseline temperature of outer space, as set by the background radiation from the Big Bang, is . The plasma between galaxies is thought to account for about half of the baryonic (ordinary) matter in the universe, having a number density of less than one hydrogen atom per cubic metre and a kinetic temperature of millions of kelvins. Local concentrations of matter have condensed into stars and galaxies. Studies indicate that 90% of the mass in most galaxies is in an unknown form, called dark matter, which interacts with other matter through gravitational but not electromagnetic forces. Observations suggest ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The White House
The White House is the official residence and workplace of the president of the United States. It is located at 1600 Pennsylvania Avenue Northwest, Washington, D.C., NW in Washington, D.C., and has been the residence of every U.S. president since John Adams in 1800. The term "White House" is often used as a metonym for the Executive Office of the President of the United States, president and his advisers. The residence was designed by Irish-born architect James Hoban in the Neoclassical architecture, neoclassical style. Hoban modelled the building on Leinster House in Dublin, a building which today houses the Oireachtas, the Irish legislature. Construction took place between 1792 and 1800, using Aquia Creek sandstone painted white. When Thomas Jefferson moved into the house in 1801, he (with architect Benjamin Henry Latrobe) added low colonnades on each wing that concealed stables and storage. In 1814, during the War of 1812, the mansion was set ablaze by British forces in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Artemis Accords
The Artemis Accords are a series of non-binding multilateral agreements between the United States government and other world governments participating in the Artemis Program, an American-led effort to return humans to the Moon by 2025, with the ultimate goal of expanding space exploration to Mars and beyond. As of December 2022, 23 countries and one territory have signed the accords, including eight in Europe, seven in Asia, three in North America, two in Oceania, two in Africa, and two in South America. Drafted by NASA and the U.S. Department of State, the Accords establish a framework for cooperation in the civil exploration and peaceful use of the Moon, Mars, and other astronomical objects. They are explicitly grounded in the United Nations Outer Space Treaty of 1967, which signatories are obliged to uphold, and cite most major U.N.-brokered conventions constituting space law.Except the Moon Treaty, despite Australia having ratified it. The Accords were signed on 13 October ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Hill (newspaper)
''The Hill'' is an American newspaper and digital media company based in Washington, D.C. that was founded in 1994. Focusing on politics, policy, business and international relations, ''The Hill''s coverage includes the U.S. Congress, the presidency and executive branch, and election campaigns. ''The Hill'' describes its output as "nonpartisan reporting on the inner workings of Government and the nexus of politics and business". The company's primary outlet is TheHill.com. ''The Hill'' is additionally distributed in print for free around Washington, D.C. and distributed to all congressional offices. It is owned by Nexstar Media Group. History Founding and early years The company was founded as a newspaper in 1994 by Democratic power broker and New York businessman Jerry Finkelstein, and Martin Tolchin, a former correspondent for ''The New York Times''. New York Representative Gary L. Ackerman was also a major shareholder. The name of the publication alludes to " Capitol Hi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arati Prabhakar
Arati Prabhakar (born February 2, 1959) is an American engineer serving as the 12th director of the White House Office of Science and Technology Policy (OSTP) and Science Advisor to the President since October 3, 2022. She was the former head of DARPA, the United States Defense Advanced Research Projects Agency, a position she held from July 30, 2012 to January 20, 2017. She is a founder and the CEO of Actuate, a nonprofit organization. She headed the National Institute of Standards and Technology (NIST) from 1993 to 1997, and was the first woman to head NIST. Early life and education Prabhakar's family immigrated to the United States from New Delhi, India when she was three; her mother was seeking an advanced degree in social work in Chicago. Prabhakar grew up in Lubbock, Texas, from age ten. Her mother encouraged her to pursue a PhD from a very early age. She has a 1979 bachelor of science in electrical engineering from Texas Tech University in Lubbock, Texas. She earned a Ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian (magazine)
''Smithsonian'' is the official journal published by the Smithsonian Institution in Washington, D.C. The first issue was published in 1970. History The history of ''Smithsonian'' began when Edward K. Thompson, the retired editor of ''Life'' magazine, was asked by the then-Secretary of the Smithsonian, S. Dillon Ripley, to produce a magazine "about things in which the Smithsonian nstitutionis interested, might be interested or ought to be interested." Thompson would later recall that his philosophy for the new magazine was that it "would stir curiosity in already receptive minds. It would deal with history as it is relevant to the present. It would present art, since true art is never dated, in the richest possible reproduction. It would peer into the future via coverage of social progress and of science and technology. Technical matters would be digested and made intelligible by skilled writers who would stimulate readers to reach upward while not turning them off with jargon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
