The Moon goes around the Earth, which goes around the Sun. We take it for granted. But our predecessors didn't think so. Zodiac Clock 3D Screensaver allows you to travel through Time and Space to see what ancient people thought of the place of our planet in the universe. The alchemic-looking clock face represents the Earth with the Sun and the Moon going around it, and stands in the circle of 12 gorgeously shimmering zodiac constellations. Version 1 has Vista compatibility.