NASA Spots Unusual Polka Dots in Sand Dunes on Mars : vimars

NASA's Mars Reconnaissance Orbiter recently captured an intriguing image of sand dunes on Mars,

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Alfred Mcewen , Jace Dela Cruz , University Of Arizona On Mars , University Of Arizona , Tech Times , Reconnaissance Orbiter , High Resolution Imaging Experiment , Sand Dunes , Mars , Ars Sand Dunes , Nasa , Nasa Mars Reconnaissance Orbiter ,