Thanks for your kind comments! > They seem to have corrected the sentence now: "particle radius is log of mass". It's still wrong. Here's a graph comparing ma

Thanks for your kind comments! > They seem to have corrected the sentence now: "particle radius is log of mass". It's still wrong. Here's a graph comparing mass = e^radius (the reciprocal of radius = log(mass) ) versus mass = radius^3: http://i.imgur.com/XkVFgIH.png http://i.imgur.com/XkVFgIH.png My point is that the two functions have a different behavior, the absolute values generated aren't very important compared to that. For solutions to f = G m1 m2 / r^2 where both bodies are computed, this will produce results wildly different than reality. (If only one body is computed, for example against a much larger parent body mass, the satellite mass stops making a difference.) > You should add an option to play cosmic billiard, that's probably the main appeal of the flash simulator :) Nice idea. I was more interested in portraying the solar system using real planetary masses and real physical constants. Still, it's a nice suggestion.