KENNEDY SPACE CENTER, FLA. - In the White Room, STS-109 Pilot Duane G. Carey (center) is helped with his launch and entry suit by Tim Seymour (left), United Space Alliance mechanical technician, and Danny Wyatt (right), NASA quality assurance specialist. On the mission, Space Shuttle Columbia will rendezvous with the Hubble Space Telescope for the crew to replace and upgrade key telescope systems through five challenging spacewalks. After an extensive 2-1/2 year modification period during which many systems were replaced and enhanced, Columbia is making its 27th flight in the Shuttle program. After the 11-day mission, Columbia is expected to land at Kennedy Space Center March 12 KSC-02pp0240

The Space Shuttle program was the United States government's manned launch vehicle program from 1981 to 2011, administered by NASA and officially beginning in 1972. The Space Shuttle system—composed of an orbiter launched with two reusable solid rocket boosters and a disposable external fuel tank— carried up to eight astronauts and up to 50,000 lb (23,000 kg) of payload into low Earth orbit (LEO). When its mission was complete, the orbiter would re-enter the Earth's atmosphere and lands as a glider. Although the concept had been explored since the late 1960s, the program formally commenced in 1972 and was the focus of NASA's manned operations after the final Apollo and Skylab flights in the mid-1970s. It started with the launch of the first shuttle Columbia on April 12, 1981, on STS-1. and finished with its last mission, STS-135 flown by Atlantis, in July 2011.