NASA / JPL-CALTECH / UNIV. OF ARIZONA / SCIENCE PHOTO LIBRARY NASA / JPL-CALTECH / UNIV. OF ARIZONA / SCIENCE PHOTO LIBRARY
Schiaparelli Crater, Mars. Satellite image of layers and sand on the floor of the Schiaparelli Crater on Mars. The Schiaparelli Crater measures 460 km wide but is very shallow and apparently filled by younger materials such as lava and/or river and wind-blown sediments. Most of the floor is covered by a thin layer of dust, but in places where there are patches of dark sand, there is also well-exposed bedrock. This sand-bedrock association is commonly seen on Mars, and most likely, the sand is actively saltating (hopping in the wind) and kicks off the dust. Imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter (MRO) satellite.
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