I've been working on this over the years. The ultimate goal is an artificial life simulation, but right now, it's a collection of testers.
https://github.com/charlierix/AsteroidMiner
The v1.53 wrapper is based on this article:
http://www.codeproject.com/Articles/27574/Newton-Game-Dynamics-Extensions-for-the-WPF-The-Mo
Currently using v2.36