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Spaceflight is the movement of spacecraft into and through outer space, primarily using rocket technology for propulsion. Spaceflight is used in space exploration, the endeavour to reach, explore, and exploit the space outside the Earth's atmosphere, and also in commercial activities like space tourism and satellite telecommunications. It is generally based on the use of rockets to transport machines, animals, and humans to, and subsequently through, space. Additional non-commercial uses of spaceflight include space observatories, reconnaissance satellites and other earth observation satellites. Objects launched into space may follow a sub-orbital trajectory and return to Earth immediately, stay in orbit around Earth, travel in the space between the planets, or aim to leave the space dominated by the Sun completely.
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Credit: NASA Ames Research Center
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NASA image of Pioneer 10's famed Pioneer plaque, a pictorial message to any extraterrestrial being that may intercept the probe. It features a design engraved into a gold-anodized aluminum plate, 152 by 229 millimeters (6 by 9 inches), attached to the spacecraft's antenna support struts to help shield it from erosion by interstellar dust.
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Dragon is a spacecraft developed by SpaceX. During its maiden flight in December 2010, Dragon became the first commercially built and operated spacecraft to be recovered successfully from orbit. On May 25, 2012, a cargo variant of Dragon became the first commercial spacecraft to successfully rendezvous with and be attached to the International Space Station (ISS). SpaceX is contracted to deliver cargo to the ISS under NASA's Commercial Resupply Services program, and Dragon began regular cargo flights in October 2012.
The spacecraft is currently launched atop a Falcon 9 v1.1 rocket. Earlier missions, through SpaceX CRS-2, used the original Falcon 9 rocket. Dragon has been launched on seven missions, with one, SpaceX CRS-7, suffering a launch failure.
Dragon was renewed for the second round of the Commercial Resupply Services in 2016. It is also the basis for the Dragon V2 manned spacecraft, which was selected under the CCDev program in 2014 to deliver astronauts to the ISS.
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Joseph Francis Shea (September 5, 1925 – February 14, 1999) was an American aerospace engineer and NASA manager. Born in the New York City borough of the Bronx, he was educated at the University of Michigan, receiving a Ph.D. in Engineering Mechanics in 1955. After working for Bell Labs on the radio inertial guidance system of the Titan I intercontinental ballistic missile, he was hired by NASA in 1961. As Deputy Director of NASA's Office of Manned Space Flight, and later as head of the Apollo Spacecraft Program Office, Shea played a key role in shaping the course of the Apollo program, helping to lead NASA to the decision in favor of lunar orbit rendezvous and supporting "all up" testing of the Saturn V rocket. While sometimes causing controversy within the agency, Shea was remembered by his former colleague George Mueller as "one of the greatest systems engineers of our time".
Deeply involved in the investigation of the 1967 Apollo 1 fire, Shea suffered a nervous breakdown as a result of the stress that he suffered. He was removed from his position and left NASA shortly afterwards. From 1968 until 1990 he worked as a senior manager at Raytheon in Lexington, Massachusetts, and thereafter became an adjunct professor of aeronautics and astronautics at MIT. While Shea served as a consultant for NASA on the redesign of the International Space Station in 1993, he was forced to resign from the position due to health issues.
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Astrodynamics • Human spaceflight • ISS • Orbit • Outer space • Robotic spacecraft • Rocket • Satellite • Space exploration • Spaceflight • Timeline of spaceflight
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