It’s been 10 years since the twin exploration rovers Spirit and Opportunity touched down on the surface of Mars. Since then, the rovers have traveled more than 4.8 miles and 23.6 miles, respectively, and have taken hundreds of thousands of images of the red planet. John Grant, supervisory geologist in the Smithsonian’s National Air and Space Museum’s Center for Earth and Planetary Studies and chair of the Science Operations Working Group on the mission, selected 50 images based on his colleagues’ suggestions for the exhibition “Spirit & Opportunity: 10 Years Roving Across Mars.”
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