The universe has a knack for throwing curveballs at astronomers. Just when scientists think they’ve got cosmic mechanics figured out, space reveals something so bizarre it rewrites the rulebook. These ...

A strange 200 million-year-old object with the mass of a planet has been discovered 20 light-years from Earth, outside our solar system. The "rogue," as it's referred to by researchers, is producing ...

A newly studied solar system breaks the usual planet pattern, raising fresh questions about how rocky and gas planets form.