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No doubt you recall NASA's "Spirit" and "Opportunity" rovers launched to Mars 6 years ago. And you may recall that hardy little Spirit recently got caught in a sand trap, where it remains after several months of trying to free it.
The information we've received about the red planet is unlike anything we've ever discovered. Now NASA must decide what Spirit is capable of, sitting in the sand.
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A hardy 'good luck' to the "Spirit" of our Martian exploration!