Grzegorz Iwacz

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Grzegorz Iwacz
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New HiRISE Image of the Northern Plains of Mars - This new image from NASA’s Mars Reconnaissance Orbiter shows frost in gully alcoves in a crater on the Northern plains of Mars. Image Credit: NASA/JPL/University of Arizona

Frosty Gullies on the Northern Plains of Mars Seasonal frost commonly forms at middle and high latitudes on Mars, much like winter snow on Earth. However, on Mars most frost is carbon dioxide (dry ice) rather than water ice.