Wow. Great work. The settings in the link below produce a sort of Big Bang simulation. https://observablehq.com/@johnowhitaker/dotswarm-exploring-slime-mould-inspired-shaders?n_power=11&initial_speed=0&speed_randomness=0.175&speed_multiplier=1&start_arrangement=Origin&wall_strat=None&col_strat=Speed&blurr_fraction=0.65&fade_speed=0&vertex_radius=0&random_steer_factor=0.0175&constant_steer_factor=3.2832&trail_strength=0.32&search_radius=0.1 If you add the smallest amount of Fade Speed (energy dissipation?), it even simulates the end of time by dead heat.

Oooh I really like this one. Had to watch it for a while to see what happened :) Thanks for sharing!