Wednesday, July 22, 2009

NASA

Space race The worm logo used from 1975 to 1992.After the s launch of the world's first human-made) on October 4, 1957, the attention of the United States turned toward its own fledgling space efforts. The, alarmed by the perceived threat to U.S. security and technological leadership (known as the "), urged immediate and swift action; President and his advisors counseled more deliberate measures. Several months of debate produced an agreement that a new federal agency was needed to conduct all non-military activity in space. The Defense Advanced Research Projects Agency) was also created at this time and many of DARPA's early space programs were soon transferred to NASA.officially Satellite 1958 Alpha, was the first Earth artificial satellite of the United States, having been launched at 10:48 pm EST on January 31, 1958. On July 29, 1958, President Eisenhower signed the establishing the National Aeronautics and Space Administration. When it began operations on October 1, 1958, NASA consisted mainly of the four laboratories and some 80 employees of the government's 46-year-old research agency, the (NACA). A significant contributor to NASA's entry into the Space race was the technology from the, led by who became a of the United States after He is today regarded as the father of the United States space program. Elements of the (of which von Braun's team was a part) and the were incorporated into NASA.NASA's earliest programs involved research into and were conducted under the pressure of the competition between the U.S. and the (the) that existed during the, initiated in 1958, started NASA down the path of human space exploration with missions designed to discover simply if man could survive in Representatives from the U.S. Army (M.L. Raines, LTC, USA), Navy (P.L. Havenstein, CDR, USN) and Air Force (K.G. Lindell, COL, USAF) were selected/requested to provide assistance to the NASA Space Task Group through coordination with the existing U.S. defense research and defense contracting infrastructure, and technical assistance resulting from experimental aircraft (and the associated military test pilot pool) development in the 1950s. On May 5, 1961, astronaut—one of the seven astronauts selected as pilot for this mission—became the first American in space when he piloted on a 15-minute suborbital flight. became the first American to orbit the Earth on February 20, 1962 during the 5 and a quarter-hour flight of After the Mercury project, was launched to conduct experiments and work out issues relating to a moon mission. The first Gemini flight with astronauts on board, was flown by and 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 human beings.During this time NASA also began to explore the solar system with unmanned probes. As with the manned program, the Soviets had the first successes, such as the first photographs of the lunar far side, but NASA's was the first space probe to visit another planet, Venus, in 1962.Apollo programThe Apollo program was designed to land humans on the Moon and bring them safely back to Earth. ended tragically when all the astronauts inside died due to fire in the command module during an experimental simulation. Because of this incident, there were a few unmanned tests before men boarded the spacecraft. and tested various components while orbiting the Moon, and returned photographs. On July 20, 1969, landed the first men on the moon, did not land on the Moon due to a malfunction, but did return photographs. The six missions that landed on the Moon returned a wealth of scientific data and almost 400 kilograms of lunar samples. Experiments included, and solar wind experiments.SkylabSkylab was the first the United States launched into orbit. The 75 station was in Earth orbit from 1973 to 1979, and was visited by crews three times, in 1973 and 1974. Skylab was originally intended to study gravitational anomalies in other solar systems, but the assignment was curtailed due to lack of funding and interest. It included a laboratory for studying the effects of, and a. A Space Shuttle was planned to dock with and elevate Skylab to a higher safe altitude, but Skylab reentered the atmosphere and was destroyed in 1979, before the first shuttle could be launched, landing over parts of Western Australia and the Indian Ocean, with some fragments being recovered.Apollo-SoyuzThe Apollo-Soyuz Test Project (or ASTP) was the first joint flight of the U.S. and. The mission took place in July 1975. For the United States of America, it was the last flight, as well as the last manned space launch until the flight of the first in April 1981.Shuttle eraThe 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, , did so on April 12, 1981The shuttle was not all good news for NASA – flights were much more expensive than initially projected, and the public again lost interest as missions appeared to become mundane until the 1986 again highlighted the risks of space flight. Work began on as a focus for the manned space program, but within NASA there was argument that these projects came at the expense of more inspiring unmanned missions such as the probes.Nonetheless, the shuttle launched milestone projects like the (HST). The HST is a joint project between NASA and the (ESA), and its success has paved the way for greater collaboration between the agencies. The HST was created with a relatively small budget of $2 billion but has continued operation since 1990, delighting both scientists and the public. Some of its images, such as the groundbreaking, have become famous.In 1995 Russian-American interaction resumed with the missions. Once more an American vehicle docked with a Russian craft, this time a full-fledged space station. This cooperation continues to today, with Russia and America the two biggest partners in the largest space station ever built – the (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 during the two year grounding of the shuttle fleet following the 2003, which killed the crew of six Americans and one Israeli, caused a 29-month hiatus in space shuttle flights and triggered a serious re-examination of NASA's priorities. The U.S. government, various scientists, and the public all reconsidered the future of the space program.Costing over $100 billion, it has been difficult at times for NASA to justify the ISS The population at large has historically been hard to impress with details of scientific experiments in low earth orbit, preferring news of grand projects to exotic locations such as During much of the 1990s, NASA was faced with shrinking annual budgets due to Congressional belt-tightening in Washington, D.C. In response, NASA's ninth administrator, , pioneered the "faster, better, cheaper" approach that enabled NASA to cut costs while still delivering a wide variety of aerospace programs That method was criticized and re-evaluated following the twin losses of in 1999. Yet, NASA's shuttle program had made 116 successful launches as of December 2006.NASA's futureIt is the current that NASA, "execute a sustained and affordable human and robotic program of space exploration and develop, acquire, and use civil space systems to advance fundamental scientific knowledge of our Earth system, solar system, and universe NASA's ongoing investigations include in-depth surveys of and studies of the and the Other NASA spacecraft are presently en route to and. With missions to in planning stages, NASA's itinerary covers over half the solar system.An improved and larger planetary, is under construction and slated to launch in 2011, after a slight delay caused by hardware challenges, which has bumped it back from the October 2009 scheduled launch. The mission to Pluto was launched in 2006 and will fly by in 2015. The probe received a from in February 2007, examining some of Jupiter's inner moons and testing on-board instruments during the fly-by. On the horizon of NASA's plans is the as part of the to study the.Vision for space explorationOn January 14, 2004, ten days after the landing of the Mars Exploration Rover, US announced a new plan for NASA's future, dubbed the. According to this plan, will return to the by 2018, and set up outposts as a testbed and potential resource for future missions. The will be retired in 2010 and will replace it by 2015, 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. Although the plan initially met with skepticism from Congress, in late 2004 Congress agreed to provide start-up funds for the first year's worth of the new space vision.Hoping to spur innovation from the private sector, NASA established a series of, technology prizes for non-government teams, in 2004. The Challenges include tasks that will be useful for implementing the Vision for Space Exploration, such as building more efficient astronaut gloves.

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