This undated file image provided by NASA shows the surface of Mars as seen from the stuck Mars rover, Spirit. Spirit has always been the unluckier of NASA's twin Mars rovers. Soon after landing in 2004, its computer went haywire, transmitting gibberish or sporadic data to Earth. Engineers eventually nursed it back to health. As Spirit and Opportunity approach their sixth year of exploration, Spirit finds itself stuck in a Martian sand trap. The robot geologist has been in jams before, but this is by far the toughest challenge it has faced. (AP Photo/NASA, File)
Read the article: Future uncertain for stuck Mars rover
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