PlanetMotion is an application for modeling the movement of objects in space. The user sets the mass, direction, and speed of objects, and the app analyzes this data and simulates the movement of planets relative to each other using the laws of physics and astronomy. This simple mechanics gives people the opportunity to see that seemingly complex astronomical science can be simple and understandable even to a child. In addition, thanks to the app, every user can feel like an astronaut on the IS