AstroGrav for Mac 1.6.1

A program that allows you to study how astronomical objects move and interact under the force of gravity. It features superb interactive 3D graphics, which allow you to move around within an astronomical system that you are viewing, while watching how it evolves with the passage of time. Sample files are provided, including Solar System, space mission and abstract systems, and these enable you to experiment with AstroGrav without having to go to the trouble of entering your own data. The comprehensive editing facilities allow you to either create your own astronomical systems or to modify existing ones, and provide you with an almost endless scope for experimentation and investigation. Comes complete with a tutorial and full documentation. Version 1.6.1 includes unspecified updates.