A journey that was only supposed to last three months has hit the decade mark as the expedition of two Mars rovers celebrates its tenth anniversary. Since landing on the Martian surface, the rovers ... more 
A journey that was only supposed to last three months has hit the decade mark as the expedition of two Mars rovers celebrates its tenth anniversary. Since landing on the Martian surface, the rovers Spirit and Opportunity have made significant scientific discoveries and chronicled their journey with hundreds of thousands of photographs. Chip Reid reports. less 
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Tue, Jan 7, 2014 8:14 PM EST