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Shadow Play 
Shadow Play 
The Spirit rover casts a long shadow in the late-afternoon sunlight on Mars. The rover's tracks form dark streaks across the center of the image. Spirit spent several days studying the bright rock formation at left center, which is completely ringed by the rover's tracks. Spirit has now more than doubled its planned mission of 90 Mars days, and has traveled almost two miles (3 km). Flight controllers are getting ready to give it a long-distance "tune-up" before it continues to its next destination. [Credit: NASA/JPL]

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