For decades, astronomers have suspected that a massive, unseen planet may be shaping the strange orbits of distant objects beyond Neptune. Recent simulations suggest the odds of these gravitational ...

Astronomers have discovered icy rocks in the outer solar system that seem to defy the laws of physics, raising questions about the existence of a ninth planet. This video delves into the research led ...

It would be understandable if you stopped thinking as much about Pluto after it was “demoted” from being considered one of ...

Hundreds of people who love the little planet that was dissed, gather every year in the Arizona town where Pluto was ...

A newly discovered warp in the outer Solar System may have been created by a small, rocky world, much closer to the Sun than the hypothesized Planet Nine. According to a new measurement of the Kuiper ...