关于这张图
This mosaic featuring several of the escarpments, or scarps – long, steep slopes – of Jezero Crater's river delta was taken by the Mastcam-Z instrument aboard NASA's Perseverance rover on Apr. 17, 2021. The delta formed billions of years ago from sediment that an ancient river carried to the mouth of the lake that once existed in the crater. The images that stitched together to create the mosaic were taken from a distance of about 1.2 miles (2.2 kilometers). An annotated version of this image (Figure 1) indicates the location of four prominent scarps in the delta. The Mastcam-Z investigation…
