I see ice on Saturn's Moon Tethys!

Full image of Tethys, natural white color, lots of craters.

Saturn's moon Tethys [TEE-thiss] is made almost entirely of water ice. Its surface is covered with icy cliffs and craters. Tethys is about 1000 kilometers (600 miles) across. It is thought to have been mostly liquid water long ago, which froze, creating long ice cliffs.

Image by the Cassini spacecraft.
Image of Tethys, very large crater in the center.

This close-up of Tethys shows the large crater Penelope. Features on Tethys are named for characters and places from ancient Greek stories "The Iliad" and "The Odyssey."

Image by the Cassini spacecraft.
Closeup of Tethys, with large circular feature.

The gigantic impact structure on Saturn's moon Tethys is called Odysseus [oh-DEE-see-us]. It is 450 kilometers (280 miles) across.
Closeup of Tethys, with huge gashes and ridges.

The surface of Tethys is covered with icy cliffs and craters. If you were standing at the bottom of the cliff shown here, going across the image, you would not be able to see the top of the cliff—it would seem to go up forever.

Image by the Cassini spacecraft.
Closeup of the surface of Tethys, in browns, grays, and pinks.

This colorized Cassini image highlights tiny color differences in the icy materials covering Tethys. The different colors show that the composition of the icy material differs, perhaps from dust and rocky material brought to the moon by meteorite impacts.