‘A huge, frozen sea lies just below the surface of Mars, a team of European scientists has announced. The team think a catastrophic event flooded the landscape five million years ago and then froze out. They tell a forthcoming edition of Nature magazine that sediments covered the ice, locking it in place. Large reserves of water-ice are known to be held at the poles on Mars but if this discovery is confirmed by follow-up observations, it would be a first for a region at such a low latitude.’
