NASA
|
|
The National Aeronautics and Space Administration (NASA) (established 1958) is the government agency responsible for the United States of America's space program and long-term general aerospace research. A civilian organization, it conducts research into both civilian and military aerospace systems.
 |
Missing image NASA_logo_bw_2.png An early NASA logo, based on the Official NASA seal used during the 1950s for NASA Facts—an early form of the NASA 'meatball' logo. |
Missing image NASA_Worm_logo.png NASA "Worm" logo, used from 1975–1992. |
| Contents |
Vision and mission
NASA's vision is "to improve life here, extend life to there, and to find life beyond." Its mission is "to understand and protect our home planet; to explore the Universe and search for life; and to inspire the next generation of explorers."
History
Space race
- For additional background, please see the Space Race article
Mercury_3.jpg
Following the Soviet space program's launch of the world's first man-made satellite (Sputnik 1) on October 4, 1957, the attention of the United States turned toward its own fledgling space efforts. The U.S. Congress, alarmed by the perceived threat to American security and technological leadership, urged immediate and strong action; President Dwight D. Eisenhower and his advisers counseled more deliberate measures. Several months of debate produced agreement that a new federal agency was needed to conduct all nonmilitary activity in space.
On July 29, 1958, President Eisenhower signed the National Aeronautics and Space Act of 1958 establishing the National Aeronautics and Space Administration (NASA). When it began operations on October 1, 1958, NASA consisted mainly of the four laboratories and some 8,000 employees of the government's 46-year-old research agency for aeronautics, the National Advisory Committee for Aeronautics (NACA).
NASA's early programs were research into manned spaceflight, and were conducted under the pressure of the competition between the USA and the USSR (the Space Race) that existed during the Cold War. The Mercury program, initiated in 1958, started NASA down the path of human space exploration with missions designed to discover simply if man could survive in space. On May 5, 1961, astronaut Alan B. Shepard Jr. became the first American in space when he piloted Freedom 7 on a 15-minute suborbital flight. John Glenn became the first American to orbit the Earth on February 20, 1962 during the 5-hour flight of Friendship 7.
Once Mercury proved that manned spaceflight was possible, project Gemini was launched to conduct experiments and work out issues relating to a moon mission. The first manned Gemini flight, Gemini III, was flown by Virgil "Gus" Grissom and John W. Young on March 23, 1965. Nine other missions followed, showing that long-duration human space flight was possible, proving that rendezvous and docking with another vehicle in space was possible, and gathering medical data on the effects of weightlessness on humans.
Apollo program
Following the success of the Mercury and Gemini programs, the Apollo program was launched to try to do interesting work in space and possibly put men around (but not on) the Moon. The direction of the Apollo program was radically altered following President John F. Kennedy's announcement on May 25, 1961 that the United States should commit itself to "landing a man on the Moon and returning him safely to the Earth" by 1970. Thus Apollo became a program to land men on the Moon. The Gemini program was started shortly thereafter to provide an interim spacecraft to prove techniques needed for the now much more complicated Apollo missions.
After eight years of preliminary missions, including NASA's first loss of astronauts with the Apollo 1 launch pad fire, the Apollo program achieved its goals with Apollo 11 which landed Neil Armstrong and Buzz Aldrin on the moon's surface on July 20, 1969 and returned them to Earth safely on July 24. Armstrong's first words upon stepping out of the Eagle lander captured the momentousness of the occasion: "That's one small step for [a] man, one giant leap for mankind." Twelve men would set foot on the Moon by the end of the Apollo program in December 1972.
NASA had won the space race, and in some senses this left it without direction, or at the very least without the public attention and interest that was necessary to guarantee large budgets from Congress. After Lyndon Johnson left office NASA lost its main political supporter, Werner Von Braun was moved to a position lobbying in Washington and plans for ambitious follow-on projects to construct a space station, establish a lunar base and launch a manned mission to Mars by 1990 were proposed but with the end to procurement of Saturn and Apollo hardware there was no capability to support these. The near-disaster of Apollo 13, where an oxygen explosion nearly doomed all three astronauts, helped to recapture attention and concern, but although missions up to Apollo 20 were planned, Apollo 17 was the last mission to fly under the Apollo banner. The program ended because of budget cuts (in part due to the Vietnam War) and the desire to develop a reusable space vehicle.
Other early missions
Although the vast majority of NASA's budget has been spent on human spaceflight, there have been many unmanned missions instigated by the space agency. In 1962 the Mariner 2 mission was launched and became the first spacecraft to make a flyby of another planet – in this case Venus. The Ranger, Surveyor, and Lunar Orbiter missions were essential to assessing lunar conditions before attempting manned Apollo landings. Later, the two Viking probes landed on the surface of Mars and sent color images back to Earth, but perhaps more impressive were the Pioneer and particularly Voyager missions that visited Jupiter, Saturn, Uranus and Neptune and sent back science and color images from all.
Having lost the space race, the Soviet Union had, along with the USA, changed its approach. On July 17, 1975 an Apollo craft (finding a new use after the cancellation of Apollo 18) was docked to the Soviet Soyuz 19 spacecraft. Although the Cold War would last many more years, this was a critical point in NASA's history and much of the international co-operation in space exploration that exists today has its genesis here. America's first space station, Skylab, occupied NASA from the end of Apollo until the late 1970s.
Shuttle era
The space shuttle became the major focus of NASA in the late 1970s and the 1980s. Planned to be a frequently launchable and mostly reusable vehicle, four space shuttles were built by 1985. The first to launch, Columbia did so on April 12, 1981.
The shuttle was not all good news for NASA – flights were much more expensive than initially projected, and even after the 1986 Challenger disaster highlighted the risks of space flight, the public again lost interest as missions appeared to become mundane.
Nonetheless, the shuttle has been used to launch milestone projects like the Hubble Space Telescope (HST). The HST was created with a relatively small budget of $2 billion but has continued operation since 1990 and has delighted both scientists and the public. Some of the images it has returned have become near-legendary, such as the groundbreaking Hubble Deep Field images. The HST is a joint project between ESA and NASA, and its success has paved the way for greater collaboration between the agencies.
In 1995 Russian-American interaction would again be achieved as the Shuttle-Mir missions began, and once more a Russian craft (this time a full-fledged space station) docked with an American vehicle. This cooperation continues to the present day, with Russian and America the two biggest partners in the largest space station ever built – the International Space Station (ISS). The strength of their cooperation on this project was even more evident when NASA began relying on Russian launch vehicles to service the ISS following the 2003 Columbia disaster, which grounded the shuttle fleet for well over two years.
Costing over one hundred billion dollars, it has been difficult at times for NASA to justify the ISS. The population at large have historically been hard to impress with details of scientific experiments in space, preferring news of grand projects to exotic locations. Even now, the ISS cannot accommodate as many scientists as planned, especially with the space shuttle out of use until March 2005 at the earliest, bringing expansion to a halt and limiting it to a two-person crew.
During much of the 1990s, NASA was faced with shrinking annual budgets due to Congressional belt-tightening in Washington, DC. In response, NASA's ninth administrator, Daniel S. Goldin, pioneered the "faster, better, cheaper" approach that enabled NASA to cut costs while still delivering a wide variety of aerospace programs (Discovery Program). That method was criticized and re-evaluated following the twin losses of Mars Climate Orbiter and Mars Polar Lander in 1999.
Mars and beyond
Probably the most publicly-inspiring mission of recent years has been the Mars Pathfinder mission of 1997. Newspapers around the world carried images of the lander dispatching its own rover, Sojourner, to explore the surface of Mars in a way never done before at any extra-terrestrial location. Less publicly acclaimed but performing science from 1997 to date (2004) has been the Mars Global Surveyor orbiter. Since 2001, the orbiting Mars Odyssey has been searching for evidence of past or present water and volcanic activity on the red planet.
On January 14, 2004, ten days after the landing of Mars Exploration Rover Spirit, President George W. Bush announced the Vision for Space Exploration. Humankind will return to the moon by 2020, and set up outposts as a testbed and potential resource for future missions. The space shuttle will be retired in 2010 and the Crew Exploration Vehicle will replace it by 2014, capable of both docking with the ISS and leaving the Earth's orbit. The future of the ISS is somewhat uncertain – construction will be completed, but beyond that is less clear. The Centennial Challenges, technology prizes for non-government teams, were established in 2004.
Criticisms
Some commentators such as Mark Wade note that NASA has suffered from a 'stop-start' approach to its manned programmes. The Apollo spacecraft and Saturn family of launch vehicles were abandoned in 1970 after billions of dollars had been spent on their development. In 2004 the U.S. Government proposed eventually replacing the Shuttle with a Crew Exploration Vehicle that would allow the agency to again conduct manned visits to the Moon. Despite the reduction of its budget following project Apollo, NASA has maintained a top-heavy bureaucracy resulting in inflated costs and compromised hardware.
NASA space missions
Manned space missions
- Mercury program
- Gemini program
- Apollo program
- Skylab
- Space Shuttle
- International Space Station
- Project Constellation
Unmanned space missions
- Lunar missions
- Mercury missions
- Venus missions
- Jupiter missions
- Saturn missions
- Cassini-Huygens together with ESA
- Multi-planet missions
- Pioneer 11 – Jupiter and Saturn
- Mariner 10 – Venus and Mercury
- Voyager 1 – Jupiter and Saturn
- Voyager 2 – Jupiter, Saturn, Uranus and Neptune
- New Horizons (Planned for 2006) – Jupiter, Pluto and Kuiper Belt
- Asteroidal/cometary missions
- NEAR Shoemaker
- Deep Space 1
- Stardust
- Deep Impact
- Dawn (Planned for 2006)
- Proposed or canceled planetary-asteroid missions
- JIMO (cancelled)
- CRAF (cancelled)
- NetLanders (cancelled)
- Titan Explorer (proposed)
- Neptune Orbiter (proposed)
- Great Observatories for Space Astrophysics
- Hubble Space Telescope – ESA partnership
- Compton Gamma Ray Observatory
- Chandra X-ray Observatory
- Spitzer Space Telescope (formerly known as the Space Infrared Telescope Facility, SIRTF)
- Other observatories
- COBE
- FUSE
- Infrared Astronomical Satellite
- James Webb Space Telescope – ESA partnership
- WMAP
List of NASA administrators
- T. Keith Glennan (1958–1961)
- James E. Webb (1961–1968)
- Thomas O. Paine (1969–1970)
- James C. Fletcher (1971–1977)
- Robert A. Frosch (1977–1981)
- James M. Beggs (1981–1985)
- James C. Fletcher (1986–1989)
- Richard H. Truly (1989–1992)
- Daniel S. Goldin (1992–2001)
- Sean O'Keefe (2001–2005)
- Michael Griffin (2005–)
Field installations
In addition to headquarters in Washington, D.C., NASA has field installations at:
- Ames Research Center, Moffett Field, California
- Dryden Flight Research Center, Edwards, California
- John H. Glenn Research Center at Lewis Field, Cleveland, Ohio
- Goddard Space Flight Center, Greenbelt, Maryland
- Jet Propulsion Laboratory, near Pasadena, California
- Lyndon B. Johnson Space Center, Houston, Texas
- John F. Kennedy Space Center, Florida
- Langley Research Center, Hampton, Virginia
- George C. Marshall Space Flight Center, Huntsville, Alabama
- John C. Stennis Space Center, Bay St. Louis, Mississippi
Awards and decorations
NASA presently bestows a number of medals and decorations to astronauts and other NASA personnel. Some awards are authorized for wear on active duty military uniforms. Current NASA awards are as follows:
- Congressional Space Medal of Honor
- NASA Distinguished Public Service Medal
- NASA Distinguished Service Medal
- NASA Equal Employment Opportunity Medal
- NASA Exceptional Achievement Medal
- NASA Exceptional Administrative Achievement Medal
- NASA Exceptional Bravery Medal
- NASA Exceptional Engineering Achievement Medal
- NASA Exceptional Scientific Achievement Medal
- NASA Exceptional Service Medal
- NASA Exceptional Technological Achievement Medal
- NASA Outstanding Leadership Medal
- NASA Public Service Medal
- NASA Space Flight Medal
Related legislation
- 1958 – National Aeronautics and Space Administration PL 85-568 (passed on July 29)
- 1961 – Apollo mission funding PL 87-98 A
- 1970 – National Aeronautics and Space Administration Research and Development Act PL 91-119
- 1984 – National Aeronautics and Space Administration Authorization Act PL 98-361
- 1988 – National Aeronautics and Space Administration Authorization Act PL 100-685
- NASA Budget 1958–2005 in 1996 Constant Year Dollars
Related topics
- Astronaut
- Space Shuttle
- Space exploration
- Space race
- Wernher von Braun
- Robert Gilruth, Chris Kraft, Gene Kranz (flight directors)
- KC-135 Reduced Gravity Aircraft
Other space agencies
- Canadian Space Agency
- China National Space Administration
- European Space Agency
- Italian Space Agency
- Indian Space Research Organisation
- Japan Aerospace Exploration Agency
- National Space Agency of Ukraine
- Russian Aviation and Space Agency
- Soviet space program (historical)
External links
- NASA Home Page (http://www.nasa.gov)
- NASA History Series Publications (http://history.nasa.gov/series95.html)
- Cassini Imaging Laboratory (http://ciclops.lpl.arizona.edu/) – Stunning images of the planets taken by the Cassini exploratory spacecraft.
Further Research
- NASA Historical Data Books (SP-4012) (http://history.nasa.gov/SP-4012/cover.html)
- Research in NASA History: A Guide to the NASA History Program (large PDF – over 1,012 kb) (http://www.hq.nasa.gov/office/pao/History/hhrhist.pdf)
- NASA History Series Publications (http://history.nasa.gov/series95.html)
- NTRS: NASA Technical Reports Server (http://ntrs.nasa.gov/)ca:NASA
cs:NASA da:NASA de:NASA es:NASA eo:NASA fr:National Aeronautics and Space Administration gl:NASA ko:미국항공우주국 id:NASA it:NASA he:נאס"א hu:NASA nl:NASA ja:アメリカ航空宇宙局 no:NASA pl:NASA pt:Administrao Nacional de Aeronutica e Espao ru:НАСА sk:NASA fi:NASA sv:NASA th:องค์การนาซา vi:NASA tr:NASA zh:美国国家航空航天局