Images: The Apollo 11 moon landing

Two men landed on the moon and returned safely to Earth in the first ever visit by humankind to another celestial body, Nasa's Apollo 11 mission, which marked its 40th anniversary on Monday.

Those two were Neil Armstrong (left), the flight commander, and Edwin 'Buzz' Aldrin (right), who piloted the Apollo lunar module to the surface of the moon on 20 July, 1969. The third member of the crew, Michael Collins (centre), piloted the command module that orbited the moon for the 21 hours that Armstrong and Aldrin were on the lunar surface.