Brilliant project and very well done.

That aside, it is just astounding that even a moderate laptop just plows through this as thought it is nothing.

I remember doing orbital calculations on a 486DX with about 30 objects at just barely 30fps thanks to the FPU. That was pretty good for me. Without the FPU you would get maybe 2FPS. Now, you can just throw a half million around at 60fps+ in a web browser. Crazy!