SimSolar - easy to use and entertaining Solar System Simulator for Windows - Windows Shareware $17.95. SimSolar - Solar System Simulator for Windows. Planet labels and orbits can be activated for easier understanding. Includes simple display and controls, speed control, tilt and rotation options for easy viewing, earth centered mode and spirograph option for showing movement patterns such as retrograde motion, options for scaled planet and orbit sizes, and over 150 years of range.

For convenience, a color selector, print controls, jump to today button, hide controls button, and restore defaults button are included. Registered version includes photo-realistic moon phase display, planet images, information pages for the nine planets and the sun and moon, an alignment finder, and a Galilean Moons of Jupiter simulator. For screen shots, further explanation, and order information visit www.pwr-tools.com/simsolar.