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Episode 18: Mars Rovers Mark Second Anniversary

Play Jan 12•4:16

Mars rovers Spirit and Opportunity are celebrating two years of exploring Mars. These golf cart-sized vehicles were only expected to last 3 months, so they have long outlasted their warranties. Spirit landed on Mars on Jan. 3, 2004, and Opportunity on Jan. 24, 2004. Together, the rovers have traveled a total of seven miles - not very impressive until you consider average temperatures w...

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