Orrery app presents the planar model of the solar system, it also a mechanical working model which can be controlled by the user where they can speedup and slow the process.
![Orrery App : Learn about Solar System](https://game400.com/wp-content/uploads/2013/06/or300.png)
Orrery app presents the planar model of the solar system, it also a mechanical working model which can be controlled by the user where they can speedup and slow the process.