Possible Earth-Like Planet Discovered in Our Solar System's Outer Regions

Scientists propose the existence of an Earth-like planet in our solar system, located closer than the disputed Planet Nine. This hypothetical planet, with a mass between 1.5 and 3 times that of Earth, could explain the clustering behaviors observed among trans-Neptunian objects (TNOs) in the Kuiper Belt. The planet's gravity would push TNOs into clustered populations beyond 150 astronomical units, providing testable signatures for its existence. Further observations and improved techniques could reveal or rule out the presence of this hidden world, offering new insights into planet formation and dynamics in the outer solar system.