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STS-48
STS-48 was a Space Shuttle mission that launched on September 12, 1991, from Kennedy Space Center, Florida. The orbiter was . The primary payload was the Upper Atmosphere Research Satellite (UARS). The mission landed on September 18 at 12:38 a.m. EDT at Edwards Air Force Base on runway 22. The mission was completed in 81 revolutions of the Earth and traveled . The 5 astronauts carried out a number of experiments and deployed several satellites. The total launch mass was and the landing mass was . Crew Crew seating arrangements Mission highlights Space Shuttle ''Discovery'' was launched into a 57.00° inclination orbit from the Kennedy Space Center (KSC) Launch Complex 39A at 7:11 p.m. EDT on September 12, 1991. Launch was delayed for 14 minutes at the T-5 minute mark due to a noise problem in the air-to-ground link. The noise cleared itself, and the countdown proceeded normally to launch. On the third day of the mission, the Upper Atmosphere Research Satellite ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
James Buchli
James Frederick Buchli (born June 20, 1945, in New Rockford, North Dakota) is a retired United States Marine aviator and former NASA astronaut who flew on four Space Shuttle missions. Early life and education Buchli graduated from Fargo Central High School, Fargo, North Dakota, in 1963 and received a Bachelor of Science degree in Aeronautical Engineering from the United States Naval Academy in 1967. He also earned a Master of Science degree in Aeronautical Engineering Systems from the University of West Florida in 1975. Buchli is an associate member of Naval Academy Alumni, American Legion, Association of Space Explorers, and American Geophysical Union. Military career Buchli received his commission in the United States Marine Corps following graduation from the United States Naval Academy at Annapolis, Maryland in 1967. He graduated from Basic Infantry Officer's Course and was subsequently sent to the Republic of Vietnam for a 1-year tour of duty, where he served as a Platoo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Oliver Creighton
John Oliver Creighton (born April 28, 1943), (Capt, USN, Ret.), is a former NASA astronaut who flew three Space Shuttle missions. Personal life He was born on April 28, 1943, in Orange, Texas, but considers Seattle, Washington, to be his hometown. He is married to the former Terry Stanford of Little Rock, Arkansas. Education He graduated from Ballard High School, Seattle, Washington, in 1961; received a Bachelor of Science degree from the United States Naval Academy in 1966 and a Master of Science degree in Administration of Science and Technology from George Washington University in 1978. Military career Creighton started flight training following graduation from the United States Naval Academy and received his aviator wings in October 1967. He was with squadron VF-154 from July 1968 to May 1970, flying F-4J Phantoms and made two combat deployments to Vietnam aboard the aircraft carrier . From June 1970 to February 1971, he attended the U.S. Naval Test Pilot School at Naval ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Shuttle Discovery
Space Shuttle ''Discovery'' ( Orbiter Vehicle Designation: OV-103) is one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first mission, STS-41-D, flew from August 30 to September 5, 1984. Over 27 years of service it launched and landed 39 times, aggregating more spaceflights than any other spacecraft to date. The Space Shuttle launch vehicle has three main components: the Space Shuttle orbiter, a single-use central fuel tank, and two reusable solid rocket boosters. Nearly 25,000 heat-resistant tiles cover the orbiter to protect it from high temperatures on re-entry. ''Discovery'' became the third operational orbiter to enter service, preceded by ''Columbia'' and ''Challenger''. It embarked on its final mission, STS-133, on February 24, 2011, and touched down for the last time at Kennedy Space Center on March 9, having spent a cumulative total of nearly a full year in space. ''Discovery'' performed bo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Atmosphere Research Satellite
The Upper Atmosphere Research Satellite (UARS) was a NASA-operated orbital observatory whose mission was to study the Earth's atmosphere, particularly the protective ozone layer. The satellite was deployed from Space Shuttle Discovery, Space Shuttle ''Discovery'' during the STS-48 mission on 15 September 1991. It entered Earth orbit at an operational altitude of , with an orbital inclination of 57 degrees. The original mission duration was to be only three years, but was extended several times. When the mission finally ended in June 2005 due to funding cuts, 14 years after the satellite's launch, six of its ten instruments were still operational. A final orbit-lowering burn was performed in early December 2005 to prepare the satellite for deorbit. On 26 October 2010, the International Space Station performed a debris-avoidance maneuver in response to a Conjunction (astronomy and astrology), conjunction with UARS. The decommissioned satellite re-entered Earth's atmosphere on 24 S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-44
STS-44 was a NASA Space Shuttle mission using '' Atlantis'' that launched on November 24, 1991. It was a U.S. Department of Defense (DoD) space mission. Crew Backup crew Crew seating arrangements Mission highlights The launch was on November 24, 1991, at 23:44:00 UTC. A launch set for November 19, 1991, was delayed due to replacement and testing of a malfunctioning redundant inertial measurement unit on the Inertial Upper Stage (IUS) booster attached to the Defense Support Program (DSP) satellite. The launch was reset for November 24 and was delayed by 13 minutes to allow an orbiting spacecraft to pass and to allow external tank liquid oxygen replenishment after minor repairs to a valve in the liquid oxygen replenishment system in the mobile launcher platform. Launch weight was . The mission was dedicated to the Department of Defense. The unclassified payload included a Defense Support Program (DSP) satellite, DSP-16 attached to Inertial Upper Stage (IUS-14), ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Microwave Limb Sounder
The microwave limb sounder (MLS) experiments measure (naturally occurring) microwave thermal emission from the limb (edge) of Earth's upper atmosphere. The data is used to create vertical profiles of atmospheric gases, temperature, pressure, and cloud ice. History * 12 September 1991 – NASA launches Upper Atmosphere Research Satellite (UARS) STS-48 mission, largely in response to threat of chlorofluorocarbons to ozone layer. * 15 July 2004 – NASA launches Earth Observing System (EOS) Aura mission with overall scientific objectives of determining whether global stratospheric ozone is recovering, measuring composition effects on climate variability, and studying pollution in the upper troposphere. See also * Remote sensing * 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 Fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
STS-43
STS-43, the ninth mission for Space Shuttle ''Atlantis'', was a nine-day mission whose primary goal was launching the TDRS-E satellite (TDRS-5). The flight also tested an advanced heatpipe radiator for potential use on the then-future space station and conducted a variety of medical and materials science investigations. Crew Crew seating arrangements Preparations and launch The launch took place on August 2, 1991, 11:01:59 a.m. EDT. Launch was originally set for July 23, 1991, but was moved to July 24 to allow time to replace a faulty integrated electronics assembly that controls orbiter/external tank separation. The mission was postponed again about five hours before liftoff on July 24, 1991, due to a faulty main engine controller on the number three main engine. The controller was replaced and retested; launch was reset for August 1, 1991. Liftoff set for 11:01 a.m. delayed due to cabin pressure vent valve reading and postponed at 12:28 p.m. due to unacceptable re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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, succeeding the National Advisory Committee for Aeronautics (NACA), to give the U.S. space development effort a distinctly civilian orientation, emphasizing peaceful applications in space science. NASA has since led most American space exploration, including Project Mercury, Project Gemini, the 1968-1972 Apollo Moon landing missions, the Skylab space station, and the Space Shuttle. NASA supports the International Space Station and oversees the development of the Orion spacecraft and the Space Launch System for the crewed lunar Artemis program, Commercial Crew spacecraft, and the planned Lunar Gateway space station. The agency is also responsible for the Launch Services Program, which provides oversight of launch operations and countdow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Upper Atmosphere
Upper atmosphere is a collective term that refers to various layers of the atmosphere of the Earth above the troposphere and corresponding regions of the atmospheres of other planets, and includes: * The mesosphere, which on Earth lies between the altitudes of about , sometimes considered part of the "middle atmosphere" rather than the upper atmosphere * The thermosphere, which on Earth lies between the altitudes of about * The exosphere, which on Earth lies between the altitudes of about and * The ionosphere, an ionized portion of the upper atmosphere which includes the upper mesosphere, thermosphere, and lower exosphere and on Earth lies between the altitudes of See also *Geospace 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, pred ... * Magnetosphere References {{Reflist At ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozone Layer
The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately above Earth, although its thickness varies seasonally and geographically. The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson. Measurements of the sun showed that the radiation sent out from its surface and reaching the ground on Earth is usually consistent with the spectrum of a black body with a temperature in the range of , except that there was no radiation below a wavelength of about 310& ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orbital Inclination
Orbital inclination measures the tilt of an object's orbit around a celestial body. It is expressed as the angle between a reference plane and the orbital plane or axis of direction of the orbiting object. For a satellite orbiting the Earth directly above the Equator, the plane of the satellite's orbit is the same as the Earth's equatorial plane, and the satellite's orbital inclination is 0°. The general case for a circular orbit is that it is tilted, spending half an orbit over the northern hemisphere and half over the southern. If the orbit swung between 20° north latitude and 20° south latitude, then its orbital inclination would be 20°. Orbits The inclination is one of the six orbital elements describing the shape and orientation of a celestial orbit. It is the angle between the orbital plane and the plane of reference, normally stated in degrees. For a satellite orbiting a planet, the plane of reference is usually the plane containing the planet's equator ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photochemistry
Photochemistry is the branch of chemistry concerned with the chemical effects of light. Generally, this term is used to describe a chemical reaction caused by absorption of ultraviolet ( wavelength from 100 to 400 nm), visible light (400–750 nm) or infrared radiation (750–2500 nm). In nature, photochemistry is of immense importance as it is the basis of photosynthesis, vision, and the formation of vitamin D with sunlight. Photochemical reactions proceed differently than temperature-driven reactions. Photochemical paths access high energy intermediates that cannot be generated thermally, thereby overcoming large activation barriers in a short period of time, and allowing reactions otherwise inaccessible by thermal processes. Photochemistry can also be destructive, as illustrated by the photodegradation of plastics. Concept Grotthuss–Draper law and Stark-Einstein law Photoexcitation is the first step in a photochemical process where the reactant is elev ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
