Nasa's Curiosity rover finds water below surface of Mars

Mars has liquid water just below its surface, according to new measurements by Nasa’s Curiosity rover. Until now, scientists had thought that conditions on the red planet were too cold and arid for liquid water to exist, although there were known to be deposits of ice. Prof Andrew Coates, head of planetary science at the Mullard Space, said: “The evidence so far is that any water would be in the form of permafrost. It’s the first time we’ve had evidence of liquid water there now.”

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