Science & technology

First flight of Challenger

4 April 1983

Challenger was the second operational orbiter in NASA's Space Shuttle fleet, built as a test vehicle and then converted for spaceflight, and it made its first flight on mission STS-6 in April 1983. The crew, led by Paul Weitz, deployed the first Tracking and Data Relay Satellite, and Story Musgrave and Donald Peterson performed the first spacewalk of the Shuttle program. Challenger flew nine missions in total, including those carrying Sally Ride, the first American woman in space, and Guion Bluford, the first African American in space. The orbiter was destroyed on 28 January 1986, shortly after liftoff on mission STS-51-L, killing all seven crew members, including the teacher Christa McAuliffe. The accident was traced to a failure of an O-ring seal in a solid rocket booster and led to a long grounding of the fleet.

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