Bright Gully Deposits on Mars
This unnamed impact crater is about 8 kilometers in diameter and contains numerous gullies.
A Wild Assortment of Jumbled Rocks
This image covers a region of Mars near Nili Fossae that contains some of the best exposures of ancient bedrock on Mars.
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Mars Reconnaissance Orbiter Catches a Twister in Action.
The Serpent Dust Devil of Mars
A towering dust devil, casts a serpentine shadow over the Martian surface in this image acquired by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter.
Dunes on Ridges
This scene shows dark sand dunes marching over the ridges created by an alluvial (water-deposited) fan in an impact crater.
Well-Speckled Polar Dunes
These barchan (crescent-shaped) sand dunes are found within the North Polar erg of Mars.
Phoenix Lander After Second Martian Winter
This image, taken Jan. 26, 2012, shows NASA's no-longer-active Phoenix Mars Lander spacecraft after its second Martian arctic winter.