On 20th July 1969, NASA met President Kennedy's challenge, and Neil Armstrong (left) and Buzz Aldrin (right) became the first and second men to walk on the moon. Listen to a sound clip of the landing by clicking here.
Michael Collins (centre) waited for them in orbit around the moon, in the command module spacecraft that would take them all home.
When they landed, the first words said on the moon were "the Eagle has landed", and as Neil Armstrong stepped onto the moon's surface he said "that's one small step for man, one giant leap for mankind. Listen to this famous speech by clicking here.
They explored the moon's surface for less than three hours, collecting 22 kilograms of rocks for study back on earth. When they returned to earth they were welcomed as celebrities, and international heroes!