konstantin batygin

Observers have not seen the Ninth Planet directly. However, the Goblin dwarf planet seems to be influenced by the gravity of the unidentified giant.

The object with a diameter of nearly 200 km named Niku (Rebel) moves in the opposite direction to other celestial bodies in the solar system.

The ninth planet also hidden at the edge of the solar system may belong to another star who passed by a long time ago.