The Speculist

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This image of the Martian north polar ice cap shows layers of water ice and dust for the first time in perspective view. Here we see cliffs which are almost 2 kilometres high, and the dark material in the caldera-like structures and dune fields could be volcanic ash.

This is just one of the incredible new pictures released by the European Space Agency late last week.

That water may become a very valuable resource some day.