NASA astronaut Neil Armstrong, he became the first man to walk on the moon, died Saturday. He was 82. Armstrong's words "That is one small step for (a) man, one giant leap for mankind," spoken on July 20, 1969. He was commander of the Apollo 11 moon landing mission, where he set foot on the surface of the moon on July 20, 1969. His death followed complications from heart-bypass surgery he underwent this month, Armstrong's family said today in a statement released by NASA.