Green Blobs on a Red Planet: NASA Rover Spots ‘Enigmatic’ Rock <img width="1500" height="1000" src="https://gizmodo.com/app/uploads/2024/10/mars-perseverance-red-rocks.jpg" alt="An abrasion patch in Mars' Serpentine Rapids.">The rocks indicate an ancient, iron-rich environment, but the rover wasn't able study details of the rock's composition. https://gizmodo.com/mars-rover-finds-enigmatic-red-rocks-with-green-flecks-2000518843