For years, astronomers have been hunting for Planet Nine, a hypothetical giant planet believed to be lurking at the far reaches of our solar system.Though it has never been directly observed, researchers have gathered indirect evidence that suggests the planet’s existence. Based on the behavior of distant objects in the Kuiper Belt, Planet Nine could be approximately 10 times more massive than Earth and might orbit the Sun from a distance of at least 20 times farther than Neptune. If it exists, it would take between 10,000 and 20,000 years to complete one orbit around the Sun, making it the sl…
