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Spirit's solar panels are almost completely covered with Martian dust. This required that Spirit be parked for nine months during the coldest part of the year. Nearly all of Spirit's energy was required to run internal heaters designed to keep its sensiti
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Spirit's solar panels are almost completely covered with Martian dust. This required that Spirit be parked for nine months during the coldest part of the year. Nearly all of Spirit's energy was required to run internal heaters designed to keep its sensiti

themaster

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