On July 21, 1969, US astronaut Neil Armstrong set his left boot on the surface of the Moon. Making his first step, he said the famous words: "That's one small step for a man, one giant leap for mankind." Twenty minutes after the first step, another NASA astronaut Buzz Aldrin joined Armstrong, becoming the second man to step on the Moon.

Apollo 11 mission before during and after the Moon walk in this photo gallery by ITAR-TASS.