NASA Space Shuttle Challenger STS-8 mission prime crew astronaut Guion Bluford exercises on the treadmill September 5, 1983 in Earth orbit. (photo by NASA Photo via Planetpix)

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Size: 3000px × 1996px
Photo credit: © NASA Photo / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: -length, astronaut, bluford, challenger, crew, earth, exercises, exercising, exploration, guion, horizontal, mission, nasa, orbit, prime, rocket, science, shuttle, space, spacecraft, sts-8, technology, treadmill