Quantum Mechanics best describe the behavior of 'objects' of this size.
As metioned above, unless a direct measurement is taken to determine (meant in the strictest sense) the location of such a small object, or the course of it's movements, the only thing you can do is calculate it's probability wave, which lets you know the probability of the electron going this way or that, being here or there, spinning on this axis or that.
Furthermore, once one of these things is determined, many other traits that electrons or other small particles possess become indeterminable.
This is phenomenon has become known as the 'Heisenberg uncertainty principle'.
As a matter of fact, Quantum Mechanical interpretations could actually be used to describe the planetary orbits, albeit the resulting probability wave could be best described as 'collapsed', stating the movements and locations of the planetary bodies as being a specific way almost 100%, instead of what you usually find when calculating the traits of subatomic particles.
But this is pretty deep stuff. If you are interested, you should go look for info on that on the net. There are good lectures and papers from universities about this at university-websites as well as commercially available. You could also try to get hold of some excellent audio books, or, like me, buy those books in a bookstore.
I am honored to call the place my home where this brilliant physicist (Heisenberg) along with Gauss made some of their most excellent advances in theoretical physics and mathematics. I guess i wouldn't be able to type this (on an internet forum) today if they hadn't, hehe.
Edited by Sûlherokhh, 27 August 2007 - 02:25 AM.