关于这张图
Like most moons in the solar system, Tethys is covered by impact craters. Some craters bear witness to incredibly violent events, such as the crater Odysseus (seen here at the right of the image). While Tethys is 660 miles (1,062 kilometers) across, the crater Odysseus is 280 miles (450 kilometers) across, covering about 4.5 percent of the moon's surface area. A comparably sized crater on Earth would be as large as Russia. This view looks toward the anti-Saturn hemisphere of Tethys. North on Tethys is up and rotated 42 degrees to the right. The image was taken in visible light with the Cassi…
