Retired NASA astronaut and veteran of three space plane tickets. An associate of america Astronaut Hall of Popularity, he won many honors, including many NASA Space Air travel Medals and a NASA Exceptional Program Medal. He gained a PhD in astronomy from George Washington School. He logged ten hours of EVA (extra-vehicular activity) period. His relationship to Susie Nelson created two kids: Marti and Aimee. He flew in the initial mission following the Challenger explosion that wiped out Judith Resnik.