July 20th, 1969: Humans walk on the moon for the first time as part of NASA's Apollo 11 mission. Astronauts Neil Armstrong and Buzz Aldrin become the first and second person to walk on the moon.

Summer 2003, Vol. 35, No. 2 By Bruce I. Bustard Enlarge Buzz Aldrin on the Moon, July 20, 1969. View in National Archives Catalog "That's one small step for man, one giant leap for all mankind." — Astronaut Neil Armstrong's words as he made his first step onto the surface of the Moon July 20, 1969 What would it be like if we could recreate a single day in our past? Not just the parts we remember, the events to which we attribute great significance, but the whole day filled with all its interacting parts.