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Mars on Earth: Simulation Tests in Remote Desert of Oman

Two scientists in spacesuits, stark white against the auburn terrain of desolate plains and dunes, test a geo-radar built to map Mars by dragging the flat box across the rocky sand.   When the geo-radar stops working, the two walk back to their all-terrain vehicles and radio colleagues at their nearby base camp for guidance. They can't turn to their mission command, far off in the Alps, because communications from there are delayed 10 minutes.   But this isn't the Red...

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