2018-01-092018-01-091983http://hdl.handle.net/2152.3/4283STS-7 was NASA's seventh Space Shuttle mission, and the second mission for the Space Shuttle Challenger, (18 June, 1983 - 24 June). STS-7 was notable for carrying Sally Ride, America's first female astronaut. This image reflects STS-7 William E. Thornton, Norman E. Thagard, and treadmill, linear threshold test.Space MedicineShuttleSTS-7William E. ThorntonTreadmillLinear threshold equipmentNorman E.Thagard