In 1968, men first left the earth for the moon. Millions of people watched their journey on television. But scarcely a handful knew how it really began. The mission seemed impossible, the odds astronomical, but the results were spectacular. NOVA presents the fascinating story behind the Apollo space program, including the historic walk on the moon in 1969, in a two-hour special. Meet unsung heroes, experience the dangers, and discover new Apollo perspectives through rare footage, little-known facts, and interviews with NASA scientists, engineers, geologists, and the astronauts themselves.