sep 132012
 
It's Snowing Dry Ice on Mars

  NASA’s Mars Reconnaissance Orbiter (MRO) data have given scientists the clearest evidence yet of carbon dioxide snowfalls on Mars. This reveals the only known example of carbon dioxide snow falling anywhere in our Solar System.  NASA’s Mars Reconnaissance Orbiter passes over the planet’s south polar region in this artist’s concept illustration. Image Credit: JPL/NSA [continue reading]