NASA
Gemini 10. Astronaut Michael Collins practices zero G Weightlessness condtions aboard KC 135 aircraft, 1966

NASA
Apollo 11. Astronaut Edwin Aldrin during moonwalk as photographed by Neil Armstrong; footprints on the lunar surface visible in the foreground, 1968

NASA
Apollo 11. A plume of flame signals the liftoff for the Apollo 11 space vehicle and the mission to land men on the moon, 1969

NASA
Apollo 11. Astronaut Michael Collins smiles during suiting, a few hours before he and astronauts Neil Armstrong and Edwin Aldrin were launched on the Nation's first manned lunar landing mission, 1969

NASA
Apollo 14. Crew. Astronauts Alan B. Shepard, Jr. Stuart A. Roosa, and Edgar D. Mitchell, 1971

NASA
Mercury 4 - Freedom 7. Recovery helicopter crew assists astronaut Alan Shepard as he ascends towards helicopter from Freedom 7 spacecraft, May 5, 1961.

NASA
Apollo 15. Onboard Film, 1971

NASA
Apollo 9. View of Docked Command/Service Module and Lunar Module, 1969

NASA
Apollo 16. View of the Earth, 1972

NASA
Apollo 11. View of lunar surface taken from Command Module, 1969