Koszelak Credit - www.spacefacts.de

Personal: Male, Married, Two children. Born in Oklahoma City, Oklahoma, USA. Bachelor of science in microbiology from the University of Oklahoma, 1976. Master of science and Ph.D. in microbiology from the University of Oklahoma Health Sciences Center, 1981 and 1984 respectively. Worked in the University of California, Irvine, Department of Molecular Biology and Biochemistry.

Astronaut Career

Astronaut Group: Payload Specialist. Inactive Entered space service: 4 October 1989. Left space service: 20 February 1992. Assigned as a backup for Shuttle Mission Spacelab-J. Unsuccessful application for NASA astronaut groups 15, 16 and 17.