Yes and no. "Planet X" is a designation given temporarily to any new planet with no name. It does not refer to a specific planet, and once a planet is given a name, 'Planet X' is discarded as a title. Several planets, including Pluto, have been referred to as "Planet X."
Supporters of the Nibiru Cataclysm Theory sometimes claim that "Planet X" is NASA's method of keeping "Nibiru," a mythical, large planet-like object, secret, as part of a cover up. There is no scientific foundation for this "theory."
Planet X was a hypothetical planet which was searched for after the discovery of planet Neptune. `Planet-X` does not exist.
Planet X does not exist - it was a hypothetical planet.
No, Planet X does not exist.
No
Planet x is the planet behind Pluto which is commonly reffered to as Selena but is not yet a planet(or clarified planet).
There is no "Planet X". See links.
The name of planet X is Nibiru
Nowhere. There is currently no planet called planet X. It is a lie
Planet X does exist but there are about 3 Dwarf planets that have simularities to Plznet X. Planet X has not yet been discovered.
There is no Planet X, so no, it did not.
Planet X does not exist.
Planet X was nothing because it does not exist and never did.