NASA's Mars rover Spirit will mark six years of
unprecedented science exploration and inspiration for the American
public on Sunday. However, the upcoming Martian winter could end
the roving career of the beloved, scrappy robot. Spirit
successfully landed on the Red Planet at 8:35 p.m. PST on Jan. 3,
2004, and its twin Opportunity arrived at 9:05 p.m. Jan. 24,
2004.
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