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Space Shuttle Mission STS 50 was the 48th Shuttle flight and the 12th flight of Columbia. Commanding the mission was Richard N. Richards, Capt. USN. Kenneth D. Bowersox served as his pilot. Mission specialists included Bonnie Dunbar, who also served as Payload Commander, Ellen Baker, and Carl Meade, col. USAF. Payload specialists included Lawrence J. DeLucas and Eugene H. Trinh. STS 50 carried the United States Microgravity Laboratory (USML 1), a Spacelab long module with an Extended Duration Orbiter (EDO) pallet in the aft cargo bay. The USML 1 consisted of 31 experiments ranging from the manufacture of crystals for possible semiconductor use to the study of the behavior of weightless fluids. STS 50 also carried the Investigations into Polymer Membrane Processing experiment and the Space Shuttle Amature Radio Experiment-II. Columbia landed July 9, 1992, at 11:43 a.m. UT on KSC's Shuttle Landing Facility Runway 33. It completed 221 revolutions around the Earth and logged 5,758,000 miles during the flight.

Alternate Names

  • 22000
  • STS50/USML1

Facts in Brief

Launch Date: 1992-06-25
Launch Vehicle: Shuttle
Launch Site: Cape Canaveral, United States
Mass: 11153 kg

Funding Agencies

  • NASA-Office of Space Science Applications (United States)
  • NASA-Office of Space Flight (United States)


  • Life Science
  • Human Crew
  • Microgravity

Additional Information

Questions and comments about this spacecraft can be directed to: Coordinated Request and User Support Office

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