3D Gravity Simulator. Simulate the solar system, exoplanets and even colliding galaxies. Add, delete and modify planets, and change the laws of physics.

Create new star or solar systems from scratch, collide planets, moons and stars and become the master of your own Universe!

Gravity simulation of two spiral galaxies colliding with each other head on.

Gravity simulation, in 3D, of the Solar System, including all planets and dwarf planets.

Gravity simulation of the inner Solar System, the region comprising the terrestrial planets and the asteroid belt.

Gravity simulation of Pluto and its five known natural satellites. The closest to Pluto is Charon. Pluto and Charon orbit their center of mass, which is located outside of both bodies.

Gravity simulation of Jupiter and its Galilean moons - the four largest moons of Jupiter — Io, Europa, Ganymede, and Callisto - and the Juno spacecraft.

Gravity simulation of asteroid Apophis close encounter with Earth in 2029. On April 13, 2029, Apophis will pass Earth closer than geosynchronous communication satellites.

Gravity simulation of Eris, the most massive dwarf planet, and its moon Dysnomia.

Gravity simulation of the Sun, Earth and Moon, Earth's only permanent natural satellite. It is the fifth-largest satellite in the Solar System.