关于这张图
This image of Saturn's northern hemisphere was taken by NASA's Cassini spacecraft on Sept. 13, 2017. It is among the last images Cassini sent back to Earth. The view was taken in visible red light using the Cassini spacecraft wide-angle camera at a distance of 684,000 miles (1.1 million kilometers) from Saturn. Image scale is 40 miles (64 kilometers). https://photojournal.jpl.nasa.gov/catalog/PIA21892
