This massive mod replaces the standard Minecraft world with a vast expanse of the universe, where you can create your own planetary system or crash planets into one another.
A menu where you can select a planet and its mode of use: static orbit or launch.
In this mode, you can place any planet in orbit of any other planet, and a line will show the distance from the center to the center of the planet.
A field where you can do whatever you want with the planets.