Happy birthday, Edwin "Buzz" Aldrin! The famed astronaut, the second person ever to walk on the moon, turns 90 on January 20, 2019. Aldrin along with Apollo 11 astronaut Neil Armstrong walked on the surface of the moon on July 20, 1969. He stepped on the lunar surface just 19 minutes after Armstrong. Born in 1930, Aldrin served in US Air Force during the Korean War before studying Astronautics.