Scientists said June 20 they have "found proof of water ice on Mars away from the polar ice caps.rnThe finding, discovered by NASA's Phoenix Mars Lander, is a crucial first step toward learning whether the ground on Mars is hospitable, because all life requires water. Now scientists can proceed with the studying the chemistry of Mars dirt in more detail.rnPhoenix photographed dice-sized crumbs of bright material in a trench informally called "Dodo-Goldilocks" June 16. When the probe went back to look at the trench, they had vanished. The disappearing act convinced scientists the material was frozen water that vaporized after digging exposed it.
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