NASA-funded astronomers are monitoring a Tunguska-sized asteroid that will pass within 30,000 miles of Mars on Jan. 30, 2008. Based on data currently available, the space rock has a 1-in-75 chance of actually hitting Mars and blasting a crater more than half-a-mile wide.
Asteroid Threatens to Hit Mars
- NASA
- 22. 12 2007 (12:50)