This still image illustrates what the Mars Exploration Rover Spirit will look like as it rolls off the northeastern side of the lander on Mars. The image was taken from footage of rover testing at JPL's In-Situ Instruments Laboratory, or 'Testbed.'

This still image illustrates what the Mars Exploration Rover Spirit will look like as it rolls off the northeastern side of the lander on Mars. The image was taken from footage of rover testing at JPL's In-Situ Instruments Laboratory, or "Testbed."

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