Select a body Click any celestial body to see details
🪐 Gravity Universe
N-body gravity simulation sandbox!
Newtonian gravity governs all bodies. Bodies orbit, collide and merge, or get ejected from the system. Star types emit glowing coronas.
Click empty space: place new body. Drag from existing body: set velocity vector. Click body: select for info. Gravity slider adjusts gravitational constant.
Supernova: nearby star explodes. Rogue planet: planet enters from edge. Black hole: ultra-dense mass that absorbs everything.