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,
Overmyer, Lind, Van den Berg, and Thornton in Spacelab Module LM1 during flight
Standing: Lind, Wang, Thagard, Thornton and Van den Berg Sitting: Overmyer and GregorySpace Shuttle program← STS-51-D (16)STS-51-G (18) →
Overmyer using a treadmill on Challenger's middeck.
Frederick Drew Gregory is a former United States Air Force pilot, military engineer, test pilot, and NASA astronaut as well as former NASA deputy administrator. He also served briefly as NASA acting a
STS-51-B
…off from Kennedy Space Center (KSC)'s launch pad 39A at 12:02:18 p.m. EDT on April 29, 1985. The crew members included Robert F. Overmyer, commander; Frederick D. Gregory, pilot; Don L. Lind, Norman E. Thagard and William E. Thornton, mission specialists; and Lodewijk van den Berg, of EG&G Energy Management, Inc., and…
Col. Frederick D. Gregory
Astronaut candidates Ron McNair, Guy Bluford, and Fred Gregory wearing Apollo spacesuits, May 1978
Ronald McNair, Guy Bluford and Fred Gregory from the class of 1978 were the first three African Americans to go to space.