The Mystery of the Undiscovered Ninth Planet

Something unseen appears to be shaping the outer edge of our Solar System. Strange orbital patterns among distant objects suggest the gravitational pull of a massive body that has never been directly observed. Astronomers call it Planet Nine — a hidden world inferred through mathematics rather than sight. This documentary follows the scientific hunt, the evidence, and the debate surrounding one of the greatest unsolved mysteries of modern astronomy. Watch the full documentary and subscribe to WiseUse for more deep-space investigations.