Off the Hook


Polar Lobes
Polar Lobes

These oddly-shaped landforms reside on the south polar region of Mars, an area rich in carbon-dioxide frost…aka dry ice. These embryonic features develop fairly rapidly and then erode back into the icy surface at a rate of about 15 feet per year.

Click for a wider angle view of the region. (Looks like spilled jelly beans.)

This image was taken by the HiRISE camera aboard the Reconnaissance Orbiter on April 30, from an altitude of about 153 miles.

Image credit: NASA/JPL/University of Arizona

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