The father of U.S. space exploration, Wernher von Braun, started out as a Nazi collaborator and a member of the Nazi SS. Why did the U.S. ignore his Nazi involvement and how do we reconcile his remarkable achievements with his dark past?

The Backstory: The Horrifying Afterlife of Lincoln's Guests at Ford's Theater
10:11

The Backstory: The Secret NASA Test That Almost Ended the Space Race
08:04

The Backstory: Space Junk Falling From the Sky
08:43