Curiosity's smaller cousin has been trundling around on the Red Planet now for almost a decade.
Opportunity first arrived on Mars a few weeks after its twin 'Spirit' back in January 2004. Despite its mission being expected to last no more than 3 months, Opportunity is now about to enter its 10th year of operation on Mars. Spirit, by contrast, became immobile in 2009 and all communications with it ceased in 2010.
Through dust storms and freezing winters, Opportunity has traveled more than 22 miles and returned over 100,000 photographs during its adventures. As things stand there is no reason to believe that it won't continue to operate for several more years to come.
"Even though it’s a federal holiday on Monday, at least one government employee will still be working: the NASA rover Opportunity."
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Source: IB Times
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