Rex Joseph Walheim is a retired United States Air Force officer, engineer and NASA astronaut. He fle...

Peggy Annette Whitson is an American biochemistry researcher, retired NASA astronaut, and former NAS...

Jeffrey Nels Williams is a retired United States Army officer and a NASA astronaut. He is a veteran ...

Stephanie Diana Wilson is an American engineer and a NASA astronaut. She flew to space onboard three...

Garrett Erin Reisman is an American engineer and former NASA astronaut. He was a backup crew member ...

Lee Joseph "Bru" Archambault is an American test pilot and former NASA astronaut. He has logged over...

Gregory Carl "Ray J" Johnson is a former American naval officer and aviator, test pilot, aerospace e...

Gregory Harold "Box" Johnson is a retired NASA astronaut and a retired colonel in the United States ...

William Anthony "Bill" Oefelein is an American test pilot instructor and former NASA astronaut who, ...

Alan Goodwin "Dex" Poindexter was an American naval officer and a NASA astronaut. Poindexter was sel...