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Open Physics 2.5 -
EC Praxis 3J 5.0
Trialr Home->Education->Science
![RSS[Education::Science]](http://www.trialr.com/images/rss.gif)
Downloading [AstroGrav (Mac) 1.4.1] ...
Software to simulate how objects move and interact under the force of gravity.
Your download should begin shortly. If it does not, use this direct link to download it again.