Abstract Systems contains simulations of a variety of abstract systems that can be studied, modified, and used as a source of ideas for further investigation.
Binary Asteroid Formation illustrates the first stage of a possible mechanism for the formation of a binary asteroid from a single asteroid.
Binary Star and Planet 1 shows the chaotic motion of a planet within a binary star system.
Binary Star and Planet 2 shows the motion of a planet orbiting just outside a binary star system.
Collapsing Cloud shows a cloud of 100 identical objects that are initially stationary, and which collapse towards their barycenter when the simulation is set running.
Disrupting Rubble Pile shows a rubble pile that has been set rotating fast enough that some objects are flung off into the surrounding space.
Dzhanibekov Effect illustrates the Dzhanibekov Effect, in which a rotating body (such a wingnut on a space station) periodically 'flips' through 180 degrees, counter to intuition.
Figure of Eight shows three identical stars that follow each other around in a figure of eight pattern.
Galilean Cannon shows a Galilean cannon.
Globular Cluster Collision shows two globular clusters on a collision course, each containing 401 identical stars.
Globular Cluster shows a globular cluster of 401 identical stars.
Many Body System shows many massive stars orbiting a much more massive central star.
Newton's Cradle shows an astronomical version of the well-known Newton's cradle toy.
Projectile illustrates the motion of a small projectile on the Earth, and its collision with a much larger ball.
Protoplanets 2D - 1 shows a central star together with 400 identical protoplanets, which are constrained to move within a plane, and so cannot move in three dimensions.
Protoplanets 2D - 2 shows a central star together with 400 identical protoplanets, which are constrained to move within a plane, and so cannot move in three dimensions.
Protoplanets 3D - 1 shows a central star together with 400 identical protoplanets, which are free to move in three dimensions, and so are not constrained to move within a plane.
Protoplanets 3D - 2 shows a central star together with 400 identical protoplanets, which are free to move in three dimensions, and so are not constrained to move within a plane.
Roche Limit illustrates the effects of the Roche limit.
Sagittarius A* Cluster shows the Sagittarius A* Cluster at the center of our galaxy.
Spiral Arms illustrates the formation of the partial spiral structures in a galaxy that result from the influence of a massive external body.
Three Body System shows three similar objects, with two objects orbiting each other in a close circular orbit, and as a pair orbiting a third object in a much larger and eccentric orbit.
Two Body System shows a two body system, with one body orbiting the other in an eccentric orbit.
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