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NASA\u2019s Perseverance rover is currently collecting samples on the surface of Mars, and some of them will be coming to Earth\u2014that is, if all goes well. NASA has a complex plan to bring bits of the Red Planet here, arriving in 2033, so scientists can study them to answer some burning questions. What\u2019s the planet\u2019s history? What is its dust like? And, are there any signs that life may have existed there? WSJ\u2019s Alex Ossola speaks to Lindsay Hays, an astrobiologist at NASA and deputy lead scientist for the Mars Sample Return mission, about how this mission could help us better understand the history of our own planet and shape future missions to Mars and beyond.\n\n\n\nFurther reading:\xa0\n\nNASA Lands Perseverance Rover Safely on Mars After \u2018Seven Minutes of Terror\u2019\xa0\n\nNASA Collects Mars Rock Samples in Historic First for Perseverance Rover\xa0\n\nNASA\u2019s Perseverance Rover Begins Its Search for Life on Mars\xa0\n\nMars Photos: See NASA\u2019s Perseverance Rover\u2019s First Visions of Red Planet\xa0\xa0\n\nLearn more about your ad choices. Visit megaphone.fm/adchoices