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Summary
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English: Mars - Circular Sand Dunes - posted by NASA on March 3, 2023
PIA25795: Circular Sand Dunes https://photojournal.jpl.nasa.gov/catalog/PIA25795 Sand dunes of many shapes and sizes are common on Mars. In this example, the dunes are almost perfectly circular, which is unusual. They are still slightly asymmetrical, with steep slip faces on the south ends. This indicates that sand generally moves to the south, but the winds may be variable. This is part of a series of images to monitor how frost disappears in the late winter; this observation appears to be free of frost. A previous image shows when the surface was covered by frost. The map is projected here at a scale of 25 centimeters (9.8 inches) per pixel. (The original image scale is 30.3 centimeters [11.9 inches] per pixel [with 1 x 1 binning]; objects on the order of 91 centimeters [35.8 inches] across are resolved.) North is up. The University of Arizona, in Tucson, operates HiRISE, which was built by Ball Aerospace & Technologies Corp., in Boulder, Colorado. NASA's Jet Propulsion Laboratory, a division of Caltech in Pasadena, California, manages the Mars Reconnaissance Orbiter Project for NASA's Science Mission Directorate, Washington. |
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| Source | https://photojournal.jpl.nasa.gov/jpeg/PIA25795.jpg |
| Author | NASA/JPL-Caltech/University of Arizona |
Licensing
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This image or video was catalogued by Jet Propulsion Laboratory of the United States
National Aeronautics and Space Administration (NASA) under Photo ID:
PIA25795. This tag does not indicate the copyright status of the attached work. A normal copyright tag is still required. See Commons:Licensing. Other languages:
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This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.) |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 12:19, 4 March 2023 |
| 2,880 × 1,800 (1.13 MB) | Drbogdan | Uploaded a work by NASA/JPL-Caltech/University of Arizona from https://photojournal.jpl.nasa.gov/jpeg/PIA25795.jpg with UploadWizard |
