The National Aeronautics and Space Administration (NASA) is the agency of the United States government that is responsible for the nation's civilian space program and for aeronautics and aerospace research. Since February 2006, NASA's mission statement has been to "pioneer the future in space exploration, scientific discovery and aeronautics research."[5] On September 14, 2011, NASA announced that it had selected the design of a new Space Launch System that it said would take the agency's astronauts farther into space than ever before and provide the cornerstone for future human space exploration efforts by the U.S.[6][7][8] NASA was established by the National Aeronautics and Space Act on July 29, 1958, replacing its predecessor, the National Advisory Committee for Aeronautics (NACA). The agency became operational on October 1, 1958.[9][10] U.S. space exploration efforts have since been led by NASA, including the Apollo moon-landing mission! s, the Skylab space station, and later the Space Shuttle . Currently, NASA is supporting the International Space Station and is overseeing the development of the Orion Multi-Purpose Crew Vehicle and Commercial Crew vehicles. The agency is also responsible for the Launch Services Program (LSP) which provides oversight of launch operations and countdown management for unmanned NASA launches. NASA science is focused on better understanding Earth through the Earth Observing System,[11] advancing heliophysics through the efforts of the Science Mission Directorate's Heliophysics Research Program,[12] exploring bodies throughout the Solar System with advanced robotic missions such as New Horizons,[13] and researching astrophysics topics, such as the Big Bang, through the Great Observatories and associated programs.[14] NASA shares data with various national and international organizations such as from the Greenhouse Gases Observing Satellite. Contents 1 Creation 2 Spac! e flight programs 2.1 Manned programs 2.1.1 X-15 rocket plane ! (1959–1968) 2.1.2 Project Mercury (1959–1963) 2.1.3 Project Gemini (1962–1966) 2.1.4 Project Apollo (1961–1972) 2.1.5 Skylab (1966–1979) 2.1.6 Apollo-Soyuz Test Project (1972-1975) 2.1.7 Space Shuttle program (1972–2011) 2.1.8 International Space Station (1998–) 2.1.8.1 Commercial Resupply and Crew programs (2006-) 2.2 Unmanned programs (1958–) 2.3 Recent and planned activities 3 Scientific research 3.1 Medicine in space 3.2 Ozone depletion 3.3 Salt evaporation and energy management 3.4 Earth Science Enterprise 4 Facilities 5 Leadership 6 Budget 7 See also 8 References 9 External links [edit] Creation Main article: The creation of NASA At launch control for the May 28, 1964, SA-6 launch. Von Braun is at center. From 1946, the NACA had been experimenting with rocket planes such as the supersonic Bell X-1.[15] In the early 1950s, there was challenge to launch an artificial satellite for the International Geophysical Year (1957–58). An effort for this was the! American Project Vanguard. After the Soviet launch of the world's first artificial 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 national security and technological leadership (known as the "Sputnik crisis"), urged immediate and swift action; President Dwight D. Eisenhower and his advisers counseled more deliberate measures. This led to an agreement that a new federal agency mainly based on NACA was needed to conduct all non-military activity in space. The Advanced Research Projects Agency (ARPA) was also created at this time to develop space technology for military application.[citation needed] On July 29, 1958, Eisenhower signed the National Aeronautics and Space Act, establishing NASA. When it began operations on October 1, 1958, NASA absorbed the 46-year-old NACA intact; its 8,000 employees, an annual budget of US$100 million, three m! ajor research laboratories (LaRC, ARC, and LFPL) and two small test fac! ilities.[16] A NASA seal was approved by President Eisenhower in 1959.[17] Elements of the ABMA and the NRL were incorporated into NASA. A significant contributor to NASA's entry into the Space Race with the Soviet Union was the technology from the German rocket program (led by Wernher von Braun, who was now working for ABMA) which in turn incorporated the technology of American scientist Robert Goddard's earlier works.[18] Earlier research efforts within the U.S. Air Force[16] and many of ARPA's early space programs were also transferred to NASA.[19] In December 1958, NASA gained control of the JPL, a contractor facility operated by the Caltech.[16] [edit] Space flight programs Main article: List of NASA missions The most notable NASA activities are its space flight programs, both manned and unmanned. The latter can be either independent, carrying scientific equipment, or supportive, testing equipment for manned flights. In the beginning, NASA's missions focused on the s! pacerace with the Soviet Union, which won the first round, but later USA took the initiative and won the final race to the Moon. The unmanned missions have until now explored most of the solar system. They have also brought telescopes for deep space exploration into orbit around the Earth together with satellites for studying Earth itself. [edit] Manned programs The rocket planes experiments started by NACA was taken a step further by NASA which used them as support for spaceflights, the first of which was one-manned and launched by military rockets. When the attention turned to reaching the Moon, the solution chosen was complicated but also the most economical. Supportive projects, both manned and unmanned were introduced and bigger rockets together with spacecraft and moonlander developed. The Moon landing and end of the space race meant a reduction of NASA's activities. Space stations of a more or less permanent nature, suggested already during the spacerace, were buil! t and an international cooperation was introduced in an attempt to both! bring nations together and at the same time share the high costs of space missions. In all, more than 100 manned missions have been made by NASA since 1958.[20] X-15A-2 leaving B-52, 1967 [edit] X-15 rocket plane (1959–1968) Main article: X-15 The NACA XS-1 (Bell X-1) was followed by additional experimental vehicles, including the X-15 in cooperation with the US Air Force and US Navy. The design featured a slender fuselage with fairings along the side containing fuel and early computerized control systems.[21] When the spacerace began the main objective was to get a person into space as soon as possible, therefore the simplest spacecraft that could be launched by existing rockets was favored. This led to the choice of a small capsule spacecraft while rocket plane proposals like a modified X-15[22] were turned down.[23] Instead X-15 was used for development of techniques and equipment of value for the space missions. This included jets for changing the orientation of a sp! acecraft, space suits for astronauts and horizon definition for navigation.[24] Nearly 200 flights were made between 1959 and 1968 allowing NASA to collect data vital not only to the spacerace but also the design of the Space Shuttle.[21] The altitude record for X-15 was 354,200 feet (107.96 km).[24] [edit] Project Mercury (1959–1963) Main article: Project Mercury Freedom 7, the first manned mission by NASA Launch on May 5, 1961. The spacecraft is the black cone on top Flight, left to right: launch, summit (117 miles[25]), reentry and landing in water (recovery by aircraft carrier) Project Mercury was initiated in 1958 and started NASA down the path of human space exploration with missions designed to discover if man could survive in space. Representatives from the U.S. Army, Navy, and Air Force were selected to provide assistance to NASA. Pilot selections were facilitated through coordination with U.S. defense research, contracting, and military test pilot programs.! On May 5, 1961, astronaut Alan Shepard became the first American in sp! ace when he piloted Mercury-Redstone 3, called Freedom 7, on a 15-minute suborbital flight.[26] John Glenn became the first American to orbit the Earth on February 20, 1962 during the flight of Friendship 7.[27] At that time the Soviet Union had taken the lead in the space race. In April 1961, one month before Alan Shepard, cosmonaut Yuri Gagarin became the first person in space when he orbited the Earth once in Vostok 1.[28] Further in August the same year, the follower Vostok 2 made a day long orbital flight[29] which led to canceling of additional American suborbital missions; they were no longer enough.[30] Three more orbital flights were made by the Mercury project after Friendship 7, the last in 1963.[31] Three additional orbital flights were cancelled since it was clear that the Mercury spacecraft had reached its limit of staying in space.[30] The defeat in the first round of the spacerace led to the introduction of the Moon race program, Apollo, in 19! 61 just after the flight of Freedom 7. However, it was estimated that this could not be done in one step and that further projects in Earth orbit were needed.[32] [edit] Project Gemini (1962–1966) Rendezvous of Gemini 6 and 7 Main article: Project Gemini Project Gemini focused on conducting experiments and developing and practicing techniques required for lunar missions. The first Gemini flight with astronauts on board, Gemini 3, was flown by Gus Grissom and John Young on March 23, 1965.[33] Nine missions followed, showing that long-duration human space flight and rendezvous and docking with another vehicle in space were possible, and gathering medical data on the effects of weightlessness on humans.[34][35] Together with that, Gemini missions also included the first American spacewalks. Even though the Gem
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