40 Years Ago: STS-41D – First Space Shuttle Launch Pad Abort

In 1983, NASA received delivery of Discovery, the third space qualified vehicle in the agency’s space shuttle fleet. During the launch attempt for the STS-41D mission on June 26, 1984, Discovery’s onboard computers halted the countdown four seconds before liftoff, and after two of its main engines had already ignited. The six astronauts safely egressed […] Read more