"Have you ever dreamed of getting a chance to see the rings of Saturn and the Asteroid Belt? This screensaver is an outstanding 3D model of the solar system. Every planet is there along with its satellites and even a small info graph with basic facts. All the proportions and trajectories are right. It’s not only its sheer beauty but also the significant educational value that make Solar System 3D Screensaver an absolute must-have...The program is otherwise available for $19.95" download here. offer valid for some 18 odd hrs more. its a good one !