Time to open the twenty-ninth door in the advent calendar. Until the New Year, I’ll be opening a door onto a different landscape from somewhere in the solar system. Where in the solar system is this fractured flowing ice? Click to enlarge >Door 29The large blocks in this image are tens of meters across, while the cracks between them are one to a few meters wide. Credit: Bob Pappalardo We’re back on Earth again. This is an icy part of Earth, ….
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