Why pay hundreds of dollars more when you can get exactly the same but downloadable ?
Orbit Explorer Plus 4.3    

Orbit Explorer Plus 4.3 Manufacture: Other
Category: Operation systems
Retail Price: $ 99.95
Our Price: $ 39.95
You save: $ 60
Product Overview
Physics educational software for high school, college and university students and teachers. Operation systems ; Other; download Orbit Explorer Plus 4.3. May also be of interest to the amateur astronomer and physicist.With Orbit Xplorer orbit simulator you can do lab exercises in gravitational physics. Study elliptical orbits, double stars, escape velocity, Keplers third law, Lagrange points, the three-body problem and more. Support Windows 95/98/Me/NT/2000/XP

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