1985: STS-51-B was the 17th flight of the NASA Space Shuttle program and the seventh flight of Space Shuttle Challenger. The launch of Challenger on April 29, 1985, was delayed by 2 minutes and 18 seconds, due to a launch processing failure. When STS-51-E was canceled, Challenger was remanifested with the STS-51-B payloads. The shuttle landed successfully on May 6, 1985, after a week-long mission. In the seventh Challenger mission, the Space Shuttle carried Spacelab-3 in the cargo bay. It returned to earth on 6 May. (Crew members of the STS-51-B (Spacelab-3) mission inside the Spacelab laboratory module aboard the Space Shuttle Challenger. Left to right: STS-51-B Commander Robert F. Overmyer; Mission Specialist Don L. Lind (obscured); Payload Specialist Lodewijk van den Berg (obscured); and Mission Specialist William Thornton. NASA photo MSFC-8901494 in public domain.)
