Images from Mars and Pluto reveal stark icy landscapes

Pits and channels on Mars’ icecap, and a giant cryovolcano on Pluto

When I first saw the landscapes in these two images, I was struck more by their similarities than their differences.

But of course looks can be deceiving. And while both landscapes do involve ice, each turns out to be very different. At the same time, they are also compelling examples of the amazing diversity of natural processes found on the different worlds of our solar system.

With all of this in mind, I though

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