Photo: NASA
NASA's Mars Reconnaissance Orbiter space probe took a snapshot of this avalanche on the Red Planet's north pole
The image shows tan clouds billowing away from the foot of a towering slope, where ice and dust have just cascaded down. [...]
Ingrid Daubar Spitale of the University of Arizona, Tucson, who works on targeting the camera and has studied hundreds of HiRISE images, was the first person to notice the avalanches. "It really surprised me," she said. "It's great to see something so dynamic on Mars. A lot of what we see there hasn't changed for millions of years."
Because she was the first person who noticed them, these avalanches are now called "Ingrid's Avalanches": Link
Obviously caused by martian skiers.
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