Posts Tagged ‘sand dunes’

Lines in the Sand

27 May 2011 Written by CritterKeeper 0 Comments

Credit: NASA/JPL/Uni­ver­sity of Ari­zona

Swirls in the dust mark out lines in the sand where dust dev­ils play along the ridges in the high lat­i­tudes of Mars in this image from NASA’s HiRISE camera.

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X Marks the Spot

31 March 2011 Written by CritterKeeper 0 Comments

Credit: NASA/JPL/University of Arizona

“X” marks the spot in this image of wind-blown dunes in Argyre Plani­tia from NASA’s HiRISE camera.

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Dragons of Mars

02 March 2011 Written by CritterKeeper 0 Comments

Credit: NASA/JPL/University of Arizona

A dragon, tongue flick­ing out, struts along this rocky land­scape on Mars in this image from NASA’s HiRISE cam­era aboard the Mars Recon­nais­sance Orbiter.

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Dizzying Dunes

10 November 2010 Written by CritterKeeper 0 Comments

Credit: NASA/JPL/University of Arizona

Any­one who has spent time at a swim­ming pool has seen some­thing like this image. It looks like shad­ows on the bot­tom of a pool from rip­ples on the sur­face. But wind, instead of water, is involved in mak­ing this dizzy­ing pat­tern of dunes on Mars.

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Ancient Ridges

19 August 2010 Written by CritterKeeper 0 Comments

Credit: NASA/JPL/University of Arizona)

Look­ing like the closeup of an elephant’s hide, polyg­o­nal ridges form odd geo­met­ric pat­terns on Mars.

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