1. Alan Shepard (1923)

American Astronaut

Test pilot who in 1961 became the first U.S. astronaut and second human being in space. He was also the fifth person to walk the Moon and celebrated by hitting...

2. Wally Schirra (1923)

American Astronaut

The first person to travel into space three times and the only person to fly in all of America's first three space programs.

3. Frank Borman (1928)

American Astronaut

Commander of the Apollo 8 mission, which was the first time a team of astronauts had ever circled the moon. He had previously been a part of the Gemini 7...

4. James Irwin (1930)

American Astronaut

As the lunar module pilot for Apollo 15, he was the eighth person to walk on the moon. He was a recipient of the NASA Distinguished Service Medal.

5. Edgar Mitchell (1930)

American Astronaut

Apollo 14 astronaut who became the sixth man to walk on the moon. He was part of the 1966 NASA Group.

6. Pete Conrad (1930)

American Astronaut

Apollo 12 astronaut who became the third person to walk on the moon. Along with astronaut Gordon Cooper, he set an eight-day space endurance record.

7. Duane Graveline (1931)

American Astronaut

Selected for the Apollo program as part of NASA's fourth group of astronauts.

8. Alfred Worden (1932)

American Astronaut

Astronaut who served as the command module pilot on the Apollo 15 mission to the moon. He would later write a memoir called Falling to Earth.

9. Clifton Williams (1932)

American Astronaut

Killed in a training jet, he was the fourth person from NASA's third group of astronauts to die.

10. Walter Cunningham (1932)

American Astronaut

Astronaut who flew on the Apollo 7 mission, which was the first manned flight to the moon. He was a recipient of the NASA Distinguished Service Medal.

11. Joe Engle (1932)

American Astronaut

Notable as a test pilot for NASA and the U.S. Air Force's North American X-15 project, he piloted a 1977 test flight of the Space Shuttle Enterprise and went on...

12. David Scott (1932)

American Astronaut

American astronaut who in 1971 became the seventh person in history to walk on the moon. He was also the first to ever drive on the Moon.

13. Fred Haise (1933)

American Astronaut

Astronaut who served as the lunar module pilot on the famous Apollo 13 mission.

14. Henry Hartsfield (1933)

American Astronaut

Former NASA astronaut who served on three space flights and worked as a test pilot.

15. Stuart Roosa (1933)

American Astronaut

Command module pilot for Apollo 14, the third mission to land astronauts on the moon.

16. Rusty Schweickart (1935)

American Astronaut

Apollo 9 pilot of the Lunar Module, the LM's first manned flight test.

17. Edward Gibson (1936)

American Astronaut

Astronaut who worked on the development of the Skylab space station and performed research on jet propulsion.

18. Gregory Chamitoff (1962)

American Astronaut

Canadian engineer who has served as mission specialist and worked on the International Space Station.

19. Robert Satcher (1965)

American Astronaut

On STS-129, he became the first orthopedic surgeon in space.

20. Robert Curbeam (1962)

American Astronaut

Retired astronaut who in 2006 set a record for most spacewalks (four) on a single spaceflight.

21. Taylor Wang (1940)

American Astronaut

Scientist who became the first ethnic Chinese person in space.

22. Frederick Hauck (1941)

American Astronaut

Astronaut who piloted one Space Shuttle mission and served as commander of two.

23. Guion Bluford (1942)

American Astronaut

As a crew member of Space Shuttle mission STS-8, he became the first African-American to venture into space.

24. Daniel Brandenstein (1943)

American Astronaut

Former astronaut who became Executive VP and Chief Operating Officer of the United Space Alliance.

25. John Casper (1943)

American Astronaut

Retired U.S. Air Force Colonel who served on four spaceflights.

26. Loren Shriver (1944)

American Astronaut

Flew on three spaceflights, piloting one and serving as commander on two. He was inducted into the Astronaut Hall of Fame in May 2008.

27. Peter Wisoff (1958)

American Astronaut

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...

28. Mike Mullane (1945)

American Astronaut

Flew on three Space Shuttle missions, including the first to launch from Vandenberg Air Force Base.

29. Terry Hart (1946)

American Astronaut

Retired USAF Lieutenant Colonel who served as Mission Specialist on STS 41-C Challenger.

30. Michael Coats (1946)

American Astronaut

Former NASA astronaut who served as Director of the Johnson Space Center in Houston, Texas, from December 2005 until December 2012.

31. Dale Gardner (1948)

American Astronaut

Former NASA astronaut who was part of the Space Shuttle Challenger mission STS-8 in 1983.

32. Charles D. Walker (1948)

American Astronaut

Engineer and astronaut who was a payload specialist for the McDonnell Douglas corporation.

33. William Shepherd (1949)

American Astronaut

Commanded Expedition 1, the first crew on the International Space Station.

34. David Leestma (1949)

American Astronaut

Former U.S. Navy captain and NASA astronaut who served on three Space Shuttle missions. He flew aboard the Challenger, Columbia, and Atlantis.

35. Judith Resnik (1949)

American Astronaut

The second American female astronaut and the first American Jewish astronaut, who died tragically in the Challenger explosion. She previously had been a part of mission aboard the Discovery.

36. Anna Lee Fisher (1949)

American Astronaut

American astronaut and chemist who flew on the STS-51-A space shuttle mission. She was selected as part of the 1978 NASA Group.

37. Kenneth Cockrell (1950)

American Astronaut

Former Captain of the U.S. Navy who flew on five Space Shuttle missions.

38. Steven Hawley (1951)

American Astronaut

Astronaut who flew on five Space Shuttle missions, including the maiden flight of Space Shuttle Discovery.

39. Lee Morin (1952)

American Astronaut

Medical doctor who flew on one Space Shuttle mission to the International Space Station.

40. Richard Hieb (1955)

American Astronaut

A veteran of three Space Shuttle missions, including the maiden voyage of Space Shuttle Endeavor.

41. Donald Pettit (1955)

American Astronaut

Scientist and astronaut who went on an expedition to Antarctica to find meteorites.

42. Stephen Robinson (1955)

American Astronaut

Retired astronaut who flew on the NASA STS-85, STS-95, STS-114, and STS-130 missions.

43. Timothy Creamer (1959)

American Astronaut

Aviator who served as flight engineer and science officer on International Space Station Expedition 22/23.

44. Kent Rominger (1956)

American Astronaut

Flew on five Space Shuttle missions, including the first docking of a Space Shuttle to the International Space Station.

45. Garrett Reisman (1968)

American Astronaut

American astronaut who spent over 100 days in space and 21 hours doing extra-vehicular activity.

46. Charles J. Precourt (1955)

American Astronaut

Former NASA astronaut who logged four Space Shuttle missions, twice serving as commander and once serving as pilot.

47. Alvin Drew (1962)

American Astronaut

The last African-American astronaut to fly on a Space Shuttle mission. He served as a Director of Operations at Yuri Gagarin Cosmonauts Training Center in Russia.

48. Rick Husband (1957)

American Astronaut

Commander of Space Shuttle Columbia mission STS-107 who was killed in the 2003 re-entry disaster.

49. Steven Lindsey (1960)

American Astronaut

NASA administrator and astronaut who commanded the last flight of the Space Shuttle Discovery. From 2006-2009, he held the position of Chief of the NASA Astronaut Office.

50. Steven Swanson (1960)

American Astronaut

NASA astronaut and engineer who served as Mission Specialist on two spaceflights.