Astronomers have searched for Planet X for over a century without success. This video explains why distance, darkness, and technology make it so hard to detect distant worlds. It shows how past ...

Last Friday I saw something on television I’d seen many times before, but with a major twist. A giant sleek white rocket ship blasted off toward space bearing a crew of four. Only instead of something ...

The curious minds at What If predict the effects if Planet X entered our solar system, revealing orbital chaos, climate changes, and planetary disruption.

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 ...

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth. When you purchase through links on our site, we may earn an affiliate ...