Apollo 11 was thespaceflight thatlanded the first two people on theMoon. CommanderNeil Armstrong and lunar module pilotBuzz Aldrin, both American, landed theApollo Lunar ModuleEagle on July 20, 1969, at 20:17UTC. Armstrong became the first person to step onto the lunar surface six hours later on July 21 at 02:56:15 UTC; Aldrin joined him 19 minutes later. They spent about two and a quarter hours together outside the spacecraft, and collected 47.5 pounds (21.5 kg) of lunar material to bring back to Earth. Command module pilotMichael Collins flew thecommand moduleColumbia alone in lunar orbit while they were on the Moon's surface. Armstrong and Aldrin spent 21.5 hours on the lunar surface before rejoiningColumbia in lunar orbit.