In case you haven’t heard, NASA’s Cassini probe is in orbit around Saturn, and the European Huygens probe is due to touch down on Titan in a few days. In the meantime, Cassini is returning some spectacular pictures from almost a billion miles away. I’m a firm believer that great pictures are improved by putting them as my desktop background. So I’ve modified some of the Cassini pictures for that purpose:
Dione against Saturn

Saturn as abstract art

Dione against Saturn
(click on the images for the full-sized versions)