Bachelor of science in physics from CalTech, 1962; Ph.D. in physics from the University of California-Berkeley, 1967; research physicist in the University of California; was selected and served as backup payload specialist for STS-9; selected as payload specialist for the STS-61K/Spacelab EOM 1-2 mission (manifested 03-09-1986, but cancelled after the Challenger accident), 27.12.1985; selected as payload specialist for the same (but renamed) mission, STS-45/ATLAS-1, October 1989; replaced by backup payload specialist Dirk Frimout from Belgium due to medical problems, 10.09.1991.
Birth Place: Williamsport, Pennsylvania.
Status: Inactive.
Born: 1941.03.01.