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Clocking a time of 11.2 years, the Opportunity @NASAMars Rover completed a marathon on the red planet #OTD in 2015, travelling 26.2 miles (42.2 km).

Planned to last 3 months, Opportunity's mission lasted to 2018: https://go.nasa.gov/3lqD0Oz

What enduring NASA mission is your fave?
#NASAhistory

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