Apollo 11, 50: One step for man

The crew of the Apollo 11, Neil Armstrong, commander; Michael Collins, module pilot; Edwin E. 'Buzz' Aldrin, lunar module pilot. Apollo 11 was the first manned mission to the surface of the moon. (Photo: NASA | AP)

Neil Armstrong, Michael Collins and Buzz Aldrin walk to the van that will take the crew to the launchpad at Kennedy Space Center on Merritt Island, Florida. (Photo: AP)

The 363-feet Saturn V rocket carrying the Apollo 11 crew, launches from Pad A, Launch Complex 39, at the Kennedy Space Centre in Florida. (Photo: NASA | AP)

An astronaut Buzz Aldrin, a lunar module pilot, walks on the surface of the moon near the leg of the Lunar Module 'Eagle' during the Apollo 11 extravehicular activity. (Photo: NASA | AP)

Apollo 11 astronaut Buzz Aldrin works on a solar wind experiment device on the surface of the moon. (Photo: NASA | AP)

Neil Armstrong, Apollo 11 commander, sits inside the Lunar Module after he and Buzz Aldrin completed their extravehicular activity on the surface of the moon. (Photo: NASA | AP)

Buzz Aldrin Jr. poses for a photograph beside the US flag on the moon during the Apollo 11 mission. (Photo: NASA | AP)

An US Navy, Navy UDT swimmer Clancy Hatleberg prepares to jump from a helicopter into the water next to the Apollo 11 capsule after it splashed down in the Pacific Ocean, to assist the astronauts into the raft at right. (Photo: NASA | AP)

President Richard Nixon gives an 'OK' sign as he greets Apollo 11 astronauts Neil Armstrong, Michael Collins, and Buzz Aldrin in a quarantine van aboard the USS Hornet after splashdown and recovery in the Pacific Ocean. (Photo: NASA | AP)