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When making gravity simulations you need to "cheat" a little to make the planets and the stars keep a stable orbit. It makes one amaze over how stable our own star system is.


Much of that is due to issues of numerical approximation, which isn't an issue for our actual planets.

Though, unlike newtonian planets, our planets can precess slightly due to general relativity thingies.


Do the simulations include the asteroid belts? Wouldn't those have a stabilising effect on the rest of the bodies in the system?




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