The Mars we all know now could be arid and dusty, with punishing radiation ranges. However, as science correspondent Nicola Davis tells Madeleine Finlay, two new research add weight to the concept that billions of years in the past the purple planet was a a lot wetter place. Nicola explains why researchers now suppose it was as soon as house to sandy seashores, what a research wanting into the kind of rust on the planet has revealed about its damp previous, and what all this may inform us concerning the former habitability of Mars
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