关于这张图
This composite image captured by NASA's Perseverance Mars rover shows boulders that decorate the top of the Jezero Crater fan deposit. Rover tracks across the middle of the image give a sense of scale. These boulders were transported by water that was either deeper or flowed faster than the ancient waterway that deposited the smaller pebbles that also populate the area. Because these boulders are sitting on top of the pebbles, scientists believe they arrived later, possibly much later. Perseverance's Mastcam-Z camera system took the series of images that make up this composite on July 6, 2023…
