Guess what

Strawberry ice-cream with vanilla and caramel? Cross-country ski slopes with bushes and fir trees? Japanese seaweed on a weird beach? You are nowhere near. Look again — dream on and only then look

Avalanches on Mars! Close to the North Pole of our neighbouring planet the extremely cold winter traps the atmospheric carbon dioxide as ice that settles on the top of sand dunes. Everything is covered by fine dust coloured red by iron. When the ice thaws and sublimate into air the sand below it is released and descends down as long brown avalanches — looking like trees.

Right in the middle of the picture, a little to the left of the center, you can see an avalanche photographed in action. The bowl of dust  bears witness to an avalanche caught in the act. On Mars! The cloud is maybe 25 meters across. The whole image one kilometer. The photo is takes by Mars Reconnaissance Orbiter. More about the image here. More about the avalanches here. More about the experience inside you.

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