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> Sand Dunes on Mars

Sand Dunes on Mars

author: NASA/JPL/Univ. of Arizona/Novapix

reference: a-mar11-00036

Image Size 300 DPI: 21 * 16 cm

Sand dunes in the center of a large crater at mid-north latitude on Mars seen by HIRISE camera with a resolution of 50 cm (18 inches) per pixel. Blue-gray swirls arcing across the dunes are tracks caused by dust devils, which are mini-tornadoes, vacuumed up the dust, revealing the darker sand underneath. Image taken on august 24 2009 by Mars Reconnaissance Orbiter (MRO) spacecraft.

Keywords for this photo:

2009 - ASTRONOMY - DUNE - DUST DEVILS - DUST STORM - FALSE COLOR - GEOLOGY - HIRISE - MARS - MARS RECONNAISSANCE ORBITER - MRO - PLANET - SAND -