4K SPH Python + Taichi. 100 K particles. Also Sprach Zarathustra : a star is born with planetoids !

Better simulation with more planetoids.
Still Newton law for gravitational attraction: (mass1 of particle1+ mass2 of particle2) / distance**2.
Completely new algorithm for the accretion/aggregation of matter allowing the formation of the star and its planetoids within an accretion disk. Reintroduction of repulsion / push back algorithms but stable now. The radiation pressure algorithm is still there as it corresponds to physical reality.
Simulation written from scratch, from nothing only with the languages Python and Taichi. Taichi is extremly fast and powefull because it knows how to use the garphic card (here Nwidia RTX 4060).
The display is also done with Taichi.
And all this in Music with Also Sprach Zarathustra of Strauss !