NSTMF Gravity - National Science and Technology Medals …
Everything in the universe - moons, planets, particles, galaxies, even light - is drawn towards everything else by the force of gravity. Your planetary collision has created a moon, or natural satellite. Moons can be anywhere from centimeters to thousands of kilometers in width.
Galaxy Makers | Design your own Universe!
Galaxy Makers is an demonstration where you are in control of the Universe. You choose what it's made of and hence how it works!
Celestia: Home
Celestia allows you to add your own content. If you don’t find a particular celestial object in the catalogues, you can simply create it yourself. Construct whole planetary systems, nebulae, galaxies or fictional objects.
SpaceEngine - The Universe Simulator
Universe simulator. SpaceEngine is a realistic virtual Universe you can explore on your computer. You can travel from star to star, from galaxy to galaxy, landing on any planet, moon, or asteroid with the ability to explore its alien landscape.
Create your Universe - The Little Bang Theory
Create your Universe. What does your Universe look like? Does making your own universe sound tempting? Tinkering with the settings of the particle collider will affect whether you manage to make a cosmos, while changing parameters within any universe you are lucky enough to produce will affect its fate, what it contains and how it looks.
Particle Sandbox - Gravity Simulator
Grand-scale Newtonian physics gravity simulator.
Universe Sandbox
Create Your Own Systems. Start with a star then add planets. Spruce it up with moons, rings, comets, or even a black hole.
Super Planet Crash - Can you feel the gravity?
Learn more about real and hypothetical exoplanet configurations, and try to build your own stable system!
Create Galaxy
Create awesome galaxies and share with your friends. This project is open-sourced.
Gravity Simulator | All Scenarios
3D Gravity Simulator. Simulate the solar system, exoplanets and even colliding galaxies. Add, delete and modify planets, and change the laws of physics.