On the Edge
The high-resolution image above depicts part of the rim of the crater Hokusai, one of the largest young craters on Mercury. The bright stripe to the right side of the image is part of the rim that collapsed, probably during the formation of the crater. The left side of the image shows part of the ejecta blanket and a few smooth areas where the impact melted the surrounding rock, which flowed and pooled in low areas. Variations in texture, like those seen in this stunning image, help scientists distinguish between various surface features.
Date acquired: January 20, 2012
Image Credit: NASA/Johns Hopkins University Applied Physics Laboratory/Carnegie Institution of Washington