Guion Bluford

Credit: NASA Public Domain

Dr Guion Bluford is a fighter pilot, an aerospace engineer, and a retired NASA astronaut. Dr Bluford is a veteran of four space flights, having flown on the space Shuttles Challenger and Discovery, each twice, between 1983 and 1992. His 1985 flight was with the first German Spacelab mission D-1 (STS-61-A). As a mission specialist, amongst the experiments he operated on this mission, he was trained by a team led by Dr Kass to perform a series of vestibular experiments on the Space Sled using the Vestibular Helmet.