What is Planet Nine, and where is it? This question remains one of the biggest mysteries in astronomy. Researchers believe a giant planet may be hidden far beyond Neptune in the distant regions of the Solar System. The idea is based on unusual orbital patterns observed among several distant objects in the Kuiper Belt. While no direct evidence has confirmed its existence, astronomers continue to investigate whether an unseen planet is influencing the motion of Extreme Trans-Neptunian Objects and other distant bodies. New discoveries, advanced telescopes, and improved observations are helping scientists explore this possibility and understand what may exist in the outer Solar System.
