March 29, 2023



Strange circular dunes on Mars spotted in these NASA photos

Planet Mars isolated in black

By Robert Lea

March 9, 2023

Planetary scientists have captured an image of near-perfectly circular sand dunes on the surface of Mars. While sand dunes across the Red Planet come in a wealth of shapes and sizes, such well-defined circles are unusual.

The slight asymmetry in the sand dunes shows their steep sides are orientated towards the south. The University of Arizona, which operates the High-Resolution Imaging Experiment (HiRise) camera used to take the image, pointed out in a statement(opens in new tab) that this indicates sands are blown southwards, though the Martian winds may be variable.

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