STS004-21-076 (27 June-4 July 1982) --- Astronaut Thomas K. Mattingly II, STS-4 commander, loses his cap amidst a maze of wiring, tape recorder and camera equipment onboard the Earth-orbiting space shuttle Columbia. He stands near the aft control panel on the flight deck of the reusable space vehicle. The 35mm frame was exposed by astronaut Henry W. Hartsfield Jr., STS-4 pilot. The pair spent seven days on NASA’s final orbital flight test in the Space Transportation System (STS) program. Photo credit: NASA