NASA Science News for Sept. 14, 2012
NASA's Mars rover Opportunity, still active after all these years, has just discovered a dense accumulation of puzzling little spheroids in a rock outcrop on the Red Planet.
FULL STORY: http://science.nasa.gov/science-news/science-at-nasa/2012/14sep_mysteryspheres/ (http://science.nasa.gov/science-news/science-at-nasa/2012/14sep_mysteryspheres/)