At 1.28 pm EDT on 19 July 1969, NASA's Apollo 11 fired its service module engine and went into orbit around the Moon. A day later the lunar module Eagle, seen here in lunar orbit, touched down in the Sea of Tranquility. Astronauts Neil Armstrong and Buzz Aldrin later spent two and a half hours walking on the moon, while their crewmate Michael Collins orbited above in the command module Columbia. Collins took this photograph through Columbia's window, before the descent to the surface.
© National Aeronautics & Space Administration / Science & Society