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NASA lost contact with Spirit in 2011. Now, Opportunity, has been out of touch with Earth since June of 2018. NASA says good bye to the 2 intrepid explorers of the Red Planet. (National Geographic)
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Photo © National Geographic Channel
![Expedition Mars: Spirit and Opportunity - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/163/628/163628394_fb0130.jpg)