Newton’s Gravity

Grav-Sim is all about the physics of gravity.

It models a set of bodies (point masses) gravitating under Newton's laws of motion. It makes no assumptions about what those bodies really are:

Planets in the Solar system

Stars in the Pleiades open cluster

Stars in the M13 globular cluster

Star clusters in the Andromeda galaxy

Galaxies in the Virgo galaxy cluster

Black holes in the early universe