American astronaut Neil Armstrong, 240,000 miles from Earth, speaks. On July 20, 1969, an estimated 650 million people watched in suspense as Neil Armstrong descended a ladder towards the surface of the Moon. As he took his first steps, he uttered words that would be written into history books for generations to come: “That's one small step for man. One giant leap for mankind." Stepping off the lunar module Eagle, Armstrong became the first human to walk on the surface of the moon.