Avalanches On Mars Photographed By NASA Spacecraft

A NASA spacecraft in orbit around Mars has taken the first ever image of active avalanches near 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.

The High Resolution Imaging Experiment (HiRISE) on NASA’s Mars Reconnaissance Orbiter took the photograph Feb. 19. It is one of approximately 2,400 HiRISE images being released today.

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.”
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