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In this image obtained from NASA, engineers in a clean room at NASA's Jet Propulsion Laboratory in Pasadena, California, observe the first driving test for NASA's Perseverance rover on December 17, 2019. - NASA's most advanced Mars rover, Perseverance, launches from Earth on July 30, on a mission to seek out signs of ancient microbial life on what was once a river delta three-and-a-half billion years ago. The interplanetary voyage will last six months. (Photo by - / NASA/JPL-CALTECH / AFP) / RESTRICTED TO EDITORIAL USE - MANDATORY CREDIT "AFP PHOTO / NASA/JPL-Caltech" - NO MARKETING - NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS / TO GO WITH AFP STORY by Ivan COURONNE "NASA's Perseverance rover will scour Mars for signs of life"