NASA shares A picture showing Dry Ice Dunes on Mars

NASA/JPL/University of Arizona

This beautiful image was taken on May 21, 2017, at Mars northern hemisphere, by the High Resolution Imaging Science Experiment (HiRISE) camera which was built by Ball Aerospace and Technology Corporation and is operated by the University of Arizona. Unlike on Earth, this snow and ice is carbon dioxide, better known to us as dry ice.
The planet experiences four seasons just like Earth does, but, since the year is longer on the planet, the axial tilt is different, but Mars has a more eccentric orbit than Earth, the seasons are not the same length as each other or the same in each hemisphere.
On Mars, in the northern hemisphere to be exact, spring is the longest season When the sun starts shining on it in the spring, the ice on the smooth surface of the dune cracks and escaping gas carries dark sand out from the dune below, often creating beautiful patterns. On the rough surface between the dunes, frost is trapped behind small sheltered ridges.

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