The Space Shuttle Program was a NASA initiative that ran from 1981 to 2011, providing reusable spacecraft capable of carrying astronauts and cargo to space and returning them safely to Earth. The program's primary spacecraft, the Space Shuttle, was designed to be launched like a rocket and return like a glider. It consisted of three main components: the orbiter (the space shuttle itself), the solid rocket boosters, and the external fuel tank. The program facilitated numerous missions, including deploying satellites, conducting scientific research, and assembling the International Space Station (ISS). The shuttle fleet completed a total of 135 missions, with five orbiters in service: Columbia, Challenger, Discovery, Atlantis, and Endeavour.
The program achieved many milestones, such as the first reusable spacecraft launch (Columbia's flight in 1981) and the first woman in space (Sally Ride in 1983). However, it also experienced tragic setbacks, most notably the Challenger disaster in 1986 and the Columbia disaster in 2003, which resulted in the loss of both crews. After its retirement in 2011, the shuttle program was succeeded by programs focused on spacecraft like the Orion capsule and emerging private companies advancing the space industry.