A screen shot from the Mars Exploration Rover team illustrates the degree to which Spirit's wheels have become embedded.
A screen shot from the Mars Exploration Rover team illustrates the degree to which Spirit's wheels have become embedded.
NASA's Mars Exploration Rover Spirit recorded this forward view of its arm and surroundings during the rover's 2,052nd Martian day, or sol (Oct. 11, 2009).
After five years, the Mars Exploration Rovers are still studying Mars. Take a closer look at how they work.
JPL engineers are using a second, lighter rover to test maneuvers to free Spirit.
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Engineers continue crab-driving a test rover at JPL in an effort to plan how to dislodge Spirit from loose sand on Mars.
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