The Easy Java Simulations Modeling and Authoring Tool is needed to explore the computational model used in the Orbiting and Colliding Galaxies 3D Model.

Orbiting and Colliding Galaxies 3D Model is the three dimensional version of the Colliding Galaxies Model.  The Orbiting and Colliding Galaxies 3D Model also has stars around both galactic cores.

Physlet Illustration 12.2 focuses on how relative mass influences the trajectories of bodies.