The physics in the simulation was faulty, that should be better now. Of course there are less collisions in 3D than in 2D. And this catapulting of stars is also an artifact in the discrete computer simulation

https://tiki.li/run/#cod=fVPRbuMgEHznK0aqdGodxSW5S0+uSl/zEVF...

Here is mine:

https://cybersystems.dev/gtc/gtc.html

Inspired by this article:

https://johncarlosbaez.wordpress.com/2024/09/20/the-gravo-th...