Aerial view of defrosting sand dunes near the Martian North Pole. As spring arrives, carbon dioxide and water ice sublime, revealing darker sand. The thawing process creates unique shapes and patterns in the dunes, driven by sunlight and Martian winds.

Astronomy Picture from 03/03/2008

Sand Dunes Thawing on Mars

Source: https://apod.nasa.gov/apod/ap080303.html


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