NASA / JPL / UNIVERSITY OF ARIZONA / SCIENCE PHOTO LIBRARY NASA / JPL / UNIVERSITY OF ARIZONA / SCIENCE PHOTO LIBRARY
South polar ice cap on Mars. Coloured satellite image of frozen carbon dioxide on the south polar ice cap. During spring and summer, the carbon dioxide is removed in some areas by sublimation (transforming from solid direct to gas) to form branching troughs, pits and depressions. Image obtained by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter (MRO) on 11th August 2009. The width of this image is roughly one kilometre across.
Model release not available. Property release not available.