How Did Moon Travel Change Astronauts?

In the history of humanity, only 24 men have shared the experience. Forty years ago today, the first of the two dozen astronauts to fly to or around the moon rocketed away from Earth to make history. Twelve had the chance to walk on the moon's surface, though only nine of those are still alive today. When they returned to Earth, they were scientists and explorers with no peers, at the pinnacles of their careers. But for some the adventure was so epic it changed the course of their lives....Full Story