For over a century, astronomers have searched for a hidden world tugging at the edges of our Solar System — a massive, frozen planet that could be 20 times farther from the Sun than Pluto. Now, new infrared sky surveys may have revealed a real candidate for the elusive Planet Nine. In this video, we dive into the full mystery: from 19th-century predictions and the strange alignments in the Kuiper Belt, to the latest scientific breakthroughs using data from the IRAS and AKARI space telescopes. Could this truly be the missing giant that explains the weird behavior of distant celestial objects? And if so, what does it mean for the future of astronomy? 🔭 Featuring stunning AI visuals, expert analysis, and the story of a world that may have been hiding in plain sight — this is everything you need to know about Planet Nine. 📡 Subscribe for more space mysteries, exoplanet discoveries, and cosmic deep dives. #PlanetNine #SpaceMystery #Astronomy #KuiperBelt #SolarSystem #ScienceExplained