NOVA scienceNOW

Asteroid

Clip | 12m 14s  | Video has closed captioning.

Will a doomsday rock the size of the Rose Bowl hit Earth in 2036?

Aired: 09/01/06

Rating: TV-G

Problems Playing Video? | Closed Captioning

Funding for NOVA ScienceNOW is provided by the National Science Foundation and the Alfred P. Sloan Foundation.