NASA Science News for December 21, 2007 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. FULL STORY at http://science.nasa.gov/headlines/y2007/21dec_2007wd5.htm?list1052465 Check out our RSS feed at http://science.nasa.gov/rss.xml!
