Just in time for Christmas (or Hanukkah, or Festivus, or...), NASA's Cassini probe has sent back some amazing photos of Titan, Dione, Tethys, and of Saturn herself. Share on Facebook (opens in a new ...
Tonight two of Saturn’s 10th-magnitude moons, Dione and Tethys, show off their relative motions as they orbit the ringed world. Look for Saturn in the south after dark, easy to spot at 1st magnitude.