Mars Mystery: Almost Perfectly Circular Sand Dunes

ByTWC - Digital
June 10, 2023Updated: June 10, 2023, 12:00 pm EDTPublished: March 9, 2023, 10:22 am EST

The High-Resolution Imaging Experiment, or HiRISE, aboard the Mars Reconnaissance Orbiter spotted the dunes as it studied how frost thaws at the end of Mar’s winter.

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