About
Physicist who took part in four NASA spaceflights. He participated in 1993 and 1994 missions on the Space Shuttle Endeavour, in a 1997 mission on the Space Shuttle Atlantis, and in a 2000 mission on the Space Shuttle Discovery.
Before Fame
He earned his BA from the University of Virginia and his PhD from Stanford University.
Trivia
He conducted over nineteen hours of EVA (extra-vehicular activity).
Family Life
He married Tamara Jernigan.
Associated With
He and Ronald Grabe both participated in NASA's STS-57 Space Shuttle mission.
