{"id":5642,"date":"2010-01-18T09:10:00","date_gmt":"2010-01-18T09:10:00","guid":{"rendered":"http:\/\/euvolution.com\/futurist-transhuman-news-blog\/dune-symmetry-inside-martian-crater\/"},"modified":"2010-01-18T09:10:00","modified_gmt":"2010-01-18T09:10:00","slug":"dune-symmetry-inside-martian-crater","status":"publish","type":"post","link":"https:\/\/www.euvolution.com\/futurist-transhuman-news-blog\/space-station\/dune-symmetry-inside-martian-crater.php","title":{"rendered":"Dune Symmetry Inside Martian Crater"},"content":{"rendered":"

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\"Dune<\/div>
› Full resolution jpeg (1,455 Kb)<\/a><\/span><\/div>

Dunes of sand-sized materials have been trapped on the floors of many Martian craters. This is one example, from a crater in Noachis Terra<\/span>, west of the giant Hellas impact basin. <\/span><\/p>

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The High Resolution Imaging Science Experiment<\/span> (HiRISE<\/span>) camera on NASA's Mars Reconnaissance Orbiter<\/span> captured this view on Dec. 28, 2009. <\/span><\/p>

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The dunes here are linear, thought to be due to shifting wind directions. In places, each dune is remarkably similar to adjacent dunes, including a reddish (or dust colored) band on northeast-facing slopes. Large angular boulders litter the floor between dunes. <\/span><\/p>

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The most extensive linear dune fields know in the solar system are on Saturn's large moon Titan<\/span>. Titan has a very different environment and composition, so at meter-scale resolution they probably are very different from Martian dunes. <\/span><\/p>

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This image covers a swath of ground about 1.2 kilometers (three-fourth of a mile) wide, centered at 42.7 degrees south latitude, 38.0 degrees east longitude. It is one product from HiRISE <\/span>observation ESP_016036_1370. The season on Mars <\/span>is southern-hemisphere autumn. Other image products from this observation are available at http:\/\/hirise.lpl.arizona.edu\/ESP_016036_1370<\/a>. <\/span><\/p>

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The University of Arizona, Tucson, operates the HiRISE <\/span>camera, which was built by Ball Aerospace & Technologies Corp., Boulder, Colo. NASA<\/a>'s Jet Propulsion Laboratory<\/span>, a division of the California Institute of Technology, Pasadena, manages the Mars Reconnaissance Orbiter for the NASA Science Mission<\/span><\/a> Directorate, Washington. Lockheed Martin Space Systems, Denver, is the prime contractor for the project and built the spacecraft<\/span>.
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View my blog's last three great articles....<\/span><\/span><\/span><\/p>