I have a clarification question. When for example calculating the N-body dynamics how are you handling the effects of for example the moons around Jool, effecting the orbits of other bodies in the system? I know that the way large scale simulations for the galaxy are done at the research level is to subdivide the universe into regions, and in places where there is a lot of matter the grids are smaller and done with more accuracy. For example, to simplify the number of calculations you need to preform, are you going to take the sum of Jool and it's moons and treat it as a point source to calculate the effects on the orbits of things far away from Jool, and then near Jool do more detailed calculations for the moons orbits?