That's ambitious! But I could definitely see being able to produce a few preset configurations. That would be easy enough (relatively speaking) to put together

That's ambitious! But I could definitely see being able to produce a few preset configurations. That would be easy enough (relatively speaking) to put together in Unity—maybe even with a bit of interactivity (eg. day/night cycle). Even without VR the game is a lot of fun: http://store.steampowered.com/app/230290/Universe_Sandbox/ http://store.steampowered.com/app/230290/Universe_Sandbox/ On steam there is Universe Sandbox^2 that has a VR version included. I don't think you can simulate the surface of planets, though. (I have it, but I haven't tried the VR version yet due to some persistent glitches with Oculus on many Steam apps).