Close-up image of Martian sand dunes near the north pole, captured by the Mars Global Surveyor. The dunes, formed by southwest winds, are partially covered in carbon dioxide frost. Spring in the northern hemisphere is causing the polar cap to recede, revealing these intricate formations. The image covers a 1.2-mile region at 77 degrees North latitude.

Astronomy Picture from 14/08/1998

The Dunes Of Mars

Source: https://apod.nasa.gov/apod/ap980814.html


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