Gregory Thomas Linteris, Ph.D. is an American scientist who flew as a payload specialist on two... more » | |
Grigori Grigoyevich Nelyubov was a Soviet cosmonaut who was likely to have been the third or... more » | |
Dr. Guion Stewart “Guy” Bluford, Jr., is an engineer, NASA astronaut, and the first African... more » | |
Virgil Ivan Grissom, better known as Gus Grissom, was one of the original NASA Project Mercury... more » | |
Guy Spence Gardner is a United States Air Force officer and a former astronaut. He holds the... more » |