is an American astronaut and physicist who flew three NASA Space Shuttle missions in the 1980s as a payload specialist. Working with McDonnell Douglas, he helped conduct early microgravity experiments that advanced commercial research in space.
is an American astronaut and former U.S. Navy test pilot who flew two NASA Space Shuttle missions in the 1990s. As a shuttle pilot, she helped conduct microgravity and science experiments aboard the orbiting laboratory.