Planet X

Planet X. Scientist refer to it as a hypothetical Neptune-sized planet, that orbits the sun far away from Pluto. Besides this hypothetical planet being called Planet X, it is also called Planet 9. Planet 9 could have a mass 10 times greater than earth’s, and be 20 times farther from the sun on average than Neptune, taking it 10,000 to 20,000 earth years to make one orbit around the sun. Although there is strong evidence supporting the Planet X theory, it still is only hypothetical and has not been confirmed, and probably won’t be for a long time due to the range of scientific technology. Planet X still

hasn’t been discovered, but there is a heated debate going on in the scientific community. Its current name is still Planet X or Planet 9, but the actual name rights are given to the discoverer(s) of the planet, then after it has to get approved by the International Astronomical Union. Planets are traditionally named for mythological Roman gods. The astronomers studying the Kuiper Belt, have seen multiple small icy objects, that tend to follow orbits that cluster together. The Caltech team thinks that there might be a possibility that large undiscovered planet may be lurking in the shadows far behind Pluto. Astronomers, such as Batygin and Brown will be using the world’s most powerful telescopes to search behind pluto for signs of a huge planet. They will have a team of over 200 people searching outer space for any sign of Planet X, or even another planet that could be lurking behind Pluto, in the Kuiper Belt, which could hold its own orbit of small ice objects, and Planet X, or even other planets.

Sources:
http://iopscience.iop.org/article/10.3847/0004-6256/151/2/22

https://solarsystem.nasa.gov/planets/hypothetical-planet-x/in-depth/