Credit: NASA Public Domain

Dr Bonnie Jeanne Dunbar is a multi-disciplinary scientist and a former NASA astronaut. She is a veteran of five Space Shuttle flights, having flown on Challenger STS-61-A (D1, 1985), Columbia STS-32 (1990) and STS-50 (1992), Atlantis STS-71 (1995, first Shuttle mission to dock with Russian Space Station MIR), and Endeavour STS-89 (1998). Dunbar was a Mission Specialist on the first German Spacelab mission, D1, for which she was trained by a team led by Dr Kass to perform a series of vestibular experiments on the Space Sled using the Vestibular Helmet.