Algodoo

This is a big bang simulation with 80 particles, of 5 types:
Dust(low mass) white
Cloud(medium-low mass) green
Rock(medium mass) yellow
Dwarf planet(medium-high mass) orange
Planet(high mass) red
Upon starting the simulation, everything will scatter. (now uniformly)
After the better half of a minute, planets will collect to make larger planets. Wait even longer, the dwarf planets wil do it too.
thamks bai