Planet X has never been observed directly, yet its influence may already be visible. Certain objects at the edge of the solar system behave in unexpected ways. Astronomers suspect a massive unseen ...

Astronomers are nearing the discovery of Planet X, a mysterious celestial body that could reshape our understanding of the solar system. This video explores the latest findings and theories ...

A new study has proposed the existence of Planet Y, an alternative Planet Nine candidate that is smaller and closer to Earth than the hypothetical Planet X, which astronomers have been hunting for ...