Select simulation: asteroids1000 - Near earth asteroids and the earth in orbit around the sun. cluster2582 - A star cluster containing 2,582 particles. collision1 - Two large irregular galaxies collide and mostly pass through each other. collision2 - Collision of two 1000 particle elliptical galaxies. galaxy1 - A lighter galaxy is torn apart by a dense galaxy. galaxy2 - A galaxy orbits a heavier one and forms a spiral. galaxy3 - A dense galaxy sucks stars out of a lighter galaxy that orbits it. galaxy4 - Galaxies orbiting each other. galaxy10k - 10,000 bodies orbiting in an elliptical galaxy. galaxy20k - 20,000 bodies orbiting in an elliptical galaxy. galaxy30k - Two 15,000 particle galaxies collide. galaxyform2500 - A 2,500 particle dust cloud collapses under gravity and forms into a galaxy. galaxymerge1 - Two 1,000 particle clouds gravitate together and eventually combine into a galaxy. galaxymerge2 - Four 1,000 particle clouds gravitate together and combine into a galaxy. galaxymerge3 - A 900 particle spinning elliptical galaxy collides with a big expanding galaxy and combines with it. planets saturnrings - Saturn with its 9 rings containing 11,987 particles. spiralgalaxy - A round galaxy becomes a spiral due to two small galaxies that fly by it.

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