This set of images from the radar instrument on NASA’s Cassini spacecraft shows a relatively “fresh” crater called Sinlap (left) and an extremely degraded crater called Soi (right). Sinlap has a depth-to-diameter ratio close to what we see on Jupiter’s moon Ganymede. Soi has a shallow depth compared to similar craters on Ganymede. These craters are both about 50 miles (80 kilometers) in diameter.
The Sinlap image was taken by Cassini’s radar instrument on Feb. 15, 2005. The Soi image is a mosaic of two images from May 21, 2009 and July 22, 2006.