The complete story of the shuttle, from its conception in the 1950s to its triumphant launch in 1981. Plus, an exclusive peek at the next-generation space shuttle, the futuristic X-33.

An unexpected disaster leaves the crew of Apollo 13 lost in space. In many ways, this failed moon mission is one of NASA's finest moments.

Explore the grand dreams of the top-secret US space program in the 1950s. Renowned physicists like Freeman Dyson discuss visions of battleship-sized rockets and spaceships hitched to comets.

Retired NASA Flight Director Gene Kranz recalls the "whiz kid" atmosphere of the space program's early days and the exploits of the astronauts who took our dreams to the moon.