Space
Gushing flood formed giant Martian sinkhole
Meltwater flowing through deep cracks in the Martian rock may explain the origins of the enormous Hebes Chasma canyon
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Meltwater flowing through deep cracks in the Martian rock may explain the origins of the enormous Hebes Chasma canyon
Sulphate minerals – which are widespread on Mars – do not erase evidence of fossilised microbes as previously thought, a study of Earth rocks suggests