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NASA's Perseverance Mars rover looks out at the expanse of Jezero Crater's river delta on April 11, 2022, the 406th Martian day, or sol, of the mission. This panorama is made up of 64 individual images from the rover's Mastcam-Z camera system and stitched together after the files were sent back from Mars. The color bands of the image have been processed to improve visual contrast and accentuate color differences. The sky would not actually look blue to a human explorer on the Red Planet. The delta formed billions of years ago from sediment that an ancient river carried to the mouth of the la…