jan 252013
 
Thawing 'Dry Ice' on Mars Proves the Planet is Still Active

  Researchers using NASA’s Mars Reconnaissance Orbiter (MRO) see seasonal changes on far-northern Martian sand dunes caused by warming of a winter blanket of frozen carbon dioxide. Seasonal Changes on Far-Northern Mars: The High Resolution Imaging Science Experiment (HiRISE) camera on NASA’s Mars Reconnaissance Orbiter snapped this series of false-color pictures of sand dunes in the [continue reading]