Now Playing: When Worlds Collide (in Sci-Fi and Science)
Description: From Spitzer Space Telescope's acclaimed Hidden Universe series, NASA/JPL/Caltech. Nearly 60 years ago, audiences thrilled to the destruction of the Earth in George Pal's classic film, "When Worlds Collide." The idea of a planetary smash-up is a staple of science fiction, but can it really happen? Astronomers using NASA's Spitzer Space Telescope think they've actually seen the aftermath of such a collision around another star. The story unf...