Is there a hidden 'Planet 9' in our solar system?

Astronomers have long been fascinated by the possibility of a previously unknown planet residing within the outer regions of our solar system for over a hundred years. This enduring hypothesis suggests the existence of a large celestial body beyond Neptune’s orbit. Researchers continue to investigate anomalies in the orbits of several Trans-Neptunian Objects (TNOs), specifically those exhibiting peculiar clustering patterns. These TNOs, including Sedna and others, display orbital characteristics that cannot be fully explained by known gravitational influences. Scientists are actively seeking evidence to either confirm or refute the presence of this hypothetical ‘Planet 9’, driven by observations of these unusual planetary movements.