Nasa's new robotic craft on Mars may be resting on a large patch of ice.The latest images sent to Earth reveal tantalising glimpses of what looks like frozen water.
Scientists think the Phoenix Mars lander's descent engine may have blown away a layer of dirt, exposing the ice.
The craft's robotic arm reached out and touched the soil for the first time, leaving behind a striking, footprint-like impression, they said on Sunday.
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