Drilling into a rock near its landing site, the Curiosity rover has answered a key question about Mars: The red planet long ago harbored some of the ingredients needed for primitive life to thrive.

... more 

Drilling into a rock near its landing site, the Curiosity rover has answered a key question about Mars: The red planet long ago harbored some of the ingredients needed for primitive life to thrive.

less 
1 / 26
WPVI – Philadelphia
Tue, Mar 12, 2013 11:40 PM EDT