You could have downloaded ThreeBody 3.6 for Mac from our application library for free. The software lies within Education Tools, more precisely Science. This free Mac app is an intellectual property of J.-M Buzzi.
From the developer:
This program illustrates the 3 bodies problem. This is a classic problem in celestial mechanics:
- determine the trajectories of 3 planets linked only by universal gravitation.
Although his statement is simple, it's interesting to note that there is no explicit solution like in the problem of two bodies, where we known, since Newton, that the trajectories are conic (ellipse, parabola or hyperbola).
You may want to check out more software for Mac, such as Gee, NLVM or DesignWorks Professional, which might be similar to ThreeBody.
Science Tools