Officially, Apollo 17, launched December 7, 1972, was the last manned mission to the moon. But two years later, in December of 1974, two American astronauts were sent on a s..

Officially, Apollo 17, launched December 7, 1972, was the last manned mission to the moon. But two years later, in December of 1974, two American astronauts were sent on a s..