Humans haven’t been back to the moon since the Apollo moons program ended over five decade ago. The reasons why go beyond science, according to experts.

Ron Evans fell sound asleep in the command module of Apollo 17 when he and his crewmates were waiting to take off. It wasn’t easy to doze off in an Apollo spacecraft, least of all when you’re flat on ...

The Story Behind TIME's 1969 Apollo Launch-Party Photos See the Past, Present and Future of American Spaceflight in 4 Minutes Apollo 11 Had 3 Men Aboard, But Only 2 Walked on the Moon. Here’s What it ...