NASA Perseverance Mars Rover Scientists Train in the Nevada Desert
Billions of years ago, the Martian surface could have supported microbial life as we know it. But did such life ever actually exist there? NASA and its Mars 2020 mission hope to find out with the Perseverance rover, which launches to the Red Planet this summer. Scientists have sought answers to astrobiological questions on Earth, studying regions similar enough to Mars to understand what t