Recipe for a ‘rocky road’ crater soaked in martian history

Recipe for a ‘rocky road’ crater soaked in martian history

ESA

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To create a crumbly crater rich in ice and chunky blocks soaked in layers of martian history – like this one recently observed by the European Space Agency’s Mars Express – follow this recipe:

1. Toss a space rock into Mars to form a classic circular base
2. Layer with molten lava 
3. Carve channels with liquid water
4. Chill to create ice, and freeze-thaw multiple times to slowly expand crater edges
5. Sprinkle generously with volcanic dust, and leave to set
6. Serve to hungry Mars fans!

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