Neil Armstrong, who turns 80 Thursday, became the first human to set foot on the moon on July 20, 1969, before the eyes of hundreds of millions of television viewers worldwide, who gazed in awe. Armstrong placed mankind's first footprint on an extraterrestrial world and gained instant hero status. His first words upon stepping on the lunar surface were: “That's one small step for man, one giant leap for mankind.” Here are some facts about him: __