Nine people have been arrested and weapons and Nazi memorabilia seized after a group "celebrated Adolf Hitler's birthday" in ...

Using two infrared space telescopes and a 23-year gap, scientists may have spotted a mysterious, slow-moving object beyond ...

A team of international scientists has identified a promising Planet Nine candidate by comparing infrared surveys of the sky ...

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.