This is from the static electricity tutorial. Since the force between oppositely charged particles and the force of gravity are similar (same distance dependence), the static electricity tools can be used to make planetary orbits.
None. Enjoy the show.
The documentation walks you through the process of building each of the tutorials and includes assets (graphics and GameObjects) for all of the demos.
Tabletop Experiments | Van de Graaff Demo | Ball magnets | Sun and Earth |
Flying Wrenches | Hovering Magnet | Beam through Solenoid | Geomagnetism | Antimatter in a Penning Trap |