Winter Frosted Mars Dunes : Big Pic

NASA's High Resolution Science Imaging Experiment (HiRISE) on board the Mars Reconnaissance Orbiter has changed our view of the Red Planet. With mind-blowing clarity, this hi-tech instrument can even keep an eye on the Mars rovers as they roll across the regolith.The HiRISE image gallery has become one of the most comprehensive and visually stunning chronicles of planetary exploration available