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.)