Strange Circular Mound in Athabasca Valles on Mars Puzzles NASA Scientists

NASA scientists using the High Resolution Imaging Science Experiment (HiRISE) camera on board the Mars Reconnaissance Orbiter have captured an image of an enigmatic landform in Athabasca Valles, in the Elysium Planitia region of equatorial Mars. The circular feature is about 2 km wide. It looks like a circular ‘island’ surrounded by a ‘sea’ of [...] —> Read More Here


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