Apollo 11 Apollo 11 Apollo 11 was the spaceflight that landed the first two people on the Moon. Commander Neil Armstrong and Lunar Module Pilot Buzz Aldrin, both American, landed the lunar module "Eagle" on July 20, 1969, at 20:17 UTC. Armstrong became the first person to step onto the lunar surface six hours after landing on July 21 at 02:56:15 UTC; Aldrin joined him about 20 minutes later. They spent about two and a quarter hours together outside the spacecraft, and collected of lunar material to bring back to Earth. Command Module Pilot Michael Collins piloted the command module "Columbia" alone
Apollo Lunar Module would have to carry the weight of the vehicle if it lands at any significant angle, three legs was the lightest configuration. However, it would be the least stable if one of the legs were damaged during landing. The next landing gear design iteration had five legs and was the most stable configuration for landing on an unknown terrain. That configuration, however, was too heavy and the designers compromised on four landing legs. In June 1966, the name was changed to lunar module (LM), eliminating the word "excursion". According to George Low, Manager of the Apollo Spacecraft Program Office, this