The Apollo program was a defining moment in human history. What started as a challenge from JFK turned into a daring mission that put the first humans on the Moon. But what did it really take to get ...

The first manned mission to the moon, Apollo 11, launched on July 16, 1969. The crew of NASA's Apollo 11 mission, from left, Edwin "Buzz" Aldrin, Michael Collins, and Neil Armstrong, pose with a ...