Astronomers propose a new hypothetical planet, Planet Y, beyond Neptune, based on observed orbital anomalies in the Kuiper ...

A mysterious new world may be hiding in the outer reaches of our solar system. According to arecent study published on arXiv ...

Planet Nine was previously suggested as a possible explanation for distant orbital clustering. It was thought to be ten times Earth’s mass, orbiting far beyond Neptune.

Strange Movements Of Objects Beyond Neptune The Result Of Alternative Gravity, Astrophysicists Suggest Strange movements in the Kuiper Belt had astronomers looking for Planet 9.

A new study suggests the existence of Planet Y. This hidden planet may be affecting the Kuiper Belt. The gravity of Planet Y ...

Related: Evidence for 'Planet 9' may actually show our theory of gravity is incomplete However, some astronomers remained skeptical, arguing that what Batygin and Brown saw as clustering is just ...

Over millions of years, Uranus’s inner moons may have collided and spread out into rings. As the material in the rings ...

So, if a star comes by and moves Neptune by this small amount, then instead of a 1% chance that Mercury will crash into Venus, now it’s a 10% chance,” Brown continued.

Neptune’s gravity could break Triton into little pieces as it draws near, turning the satellite into a set of Saturnlike rings.