Space Shuttle

The Space Shuttle was a partially reusable launch system and orbital spacecraft operated by the U.S. National Aeronautics and Space Administration (NASA) for human spaceflight missions. The system combined rocket launch, orbital spacecraft, and re-entry spaceplane with modular add-ons. The first of four orbital test flights occurred in 1981 leading to operational flights beginning in 1982. It was used on a total of 135 missions from 1981 to 2011 all launched from the Kennedy Space Center, Florida.

Major missions included launching numerous satellites, interplanetary probes, the Hubble Space Telescope (HST), conducting space science experiments, and constructing and servicing the International Space Station. Major components included the orbiters, recoverable boosters, external tanks, payloads, and supporting infrastructure. Five space-worthy orbiters were built; two were lost in mission accidents.

The Space Shuttle at launch consisted of the Orbiter Vehicle (OV), one external tank (ET), and two Solid Rocket Boosters (SRBs). It was launched vertically like a conventional rocket with thrust from the two SRBs and three main engines. During launch, the external tank provided fuel for the orbiter's main engines. The SRBs and ET were jettisoned before the orbiter reached orbit. At the conclusion of the orbiter's space mission, it fired its thrusters to drop out of orbit and re-enter the lower atmosphere. The orbiter decelerated in the atmosphere before flying like a glider but with reaction control system thrusters before landing on a long runway. Columbia, Challenger, Discovery, Atlantis, and Endeavour were the space-capable orbiters that were built.

Read more about Space ShuttleOverview, Early History, Description, Fleet History, Retirement, Space Shuttle Successors and Legacy, In Culture

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Famous quotes containing the words shuttle and/or space:

    And the shuttle never falters, but to draw an encouraging conclusion
    From this would be considerable, too odd. Why not just
    Breathe in with the courage of each day, recognizing yourself as one
    Who must with difficulty get down from high places?
    John Ashbery (b. 1927)

    In the United States there is more space where nobody is is than where anybody is.
    Gertrude Stein (1874–1946)