9Th Planet (Cosmic Adventure by Behringer Neutron and Crave)

Based on theoretical knowledge about physics and astronomy, we learned that there is another full-fledged planet in the solar system. The planet is 500 times farther away than the Earth from the sun. Despite theoretical predictions, it has not actually been found yet. July 2023 - the search continues. At the moment, an astronomical body that has not been found is called planet nine.