Don't Be Subtle, Nuke That Asteroid

Going against the recommendations of not using nuclear explosions to destroy a doomsday asteroid, a physicist has turned the "softly, softly" approach on its head.

June 29, 2010
11:25 AM EDT
WATCH VIDEO: Astrophysicist Andy Puckett explores the universe, especially undiscovered asteroids that could one day smack into our planet.