When We Left Earth: The NASA Missions

Astronauts attempt to fix a defective main mirror on the Hubble Space Telescope in NASA's most important mission since the Apollo era; the space station paves the way back to the moon and mars.

The development of the space shuttle and a new revolutionary approach to space travel; tragedy strikes when Challenger explodes.

NASA lands Neil Armstrong and Buzz Aldrin on the moon.

NASA rebounds from the Apollo 1 tragedy with missions into deep space and the moon.

Mercury astronauts launch pioneering missions into space.

Mercury astronauts and engineers figure out how to launch a man into space on top of an intercontinental ballistic missile.