It’s difficult to imagine a film or series set in space without a scene containing an astronaut in dire straits in the vast of reaches of space. Forty years ago this week, the sixth Space Shuttle mission, STS-6, and the first flight of the Space Shuttle Challenger, not only launched the first Tracking and Data Relay Satellite, TDRS-1, but it served another role of monumental importance in the evolution of human space travel — as a test for shuttle spacewalks, formally known as extravehicular activities (EVAs).
