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Composed of multiple images from NASA's Perseverance Mars rover, this mosaic shows a rocky outcrop called "Wildcat Ridge," where the rover extracted two rock cores and abraded a circular patch to investigate the rock's composition. The site is in the delta, a fan-shaped area where, billions of years ago, a river once flowed into a lake in Jezero Crater. Scientists consider this area one of the best places on Mars to search for potential signs of ancient microbial life. The images were obtained by the Mastcam-Z instrument on Aug. 4, 2022, the 518th Martian day, or sol, of the rover's mission.…