Interesting Fact - The Moon Landings

Neil Armstrong and Edwin "Buzz" Aldrin spent a total of 21 hours on the Moon, two-and-a-half of them outside the landing module.  They left a plaque, which read, "Here men from the planet Earth first set foot upon the Moon July 1969 AD. We came in peace for all mankind."

"Neil Armstrong pose".  via Wikimedia Commons.

(The astronauts, including Michael Collins, returned to Earth on 24th July, where they spent the next 21 days in quarantine at an American military base - a procedure dropped in subsequent missions since no alien organisms were found.)