Fifty years ago today, on May 25, 1961, John F. Kennedy gave his historic speech challenging the United States to put a man on the moon and bring him safely back to Earth before the end of the decade. This speech initiated NASA's Apollo program, and Kennedy's goal was realized with the Apollo 11 moon landing on July 20, 1969. Above, Neil Armstrong and Buzz Aldrin unfurling the American flag.
(Flickr/NASA Goddard Photo and Video)
