Posted by tourdemars to General News at January 29, 2010 10:29 AM

This weekend promises two very special "close encounters" with our nearest neighbors. Planetary scientist Barbara Cohen at NASA's Marshall Space Flight Center will answer your questions online via a a live Web chat on Friday, January 29, 2010 from 3:00-4:00 EST to field questions about Mars at Opposition and the "largest" full moon of the year.