Planet 9 sits at the edge of scientific imagination, promising either an epic expansion of the Solar System or a lesson in ...

An international team of astronomers, including researchers from the University of Galway, has hailed the "remarkable discovery" of a newly detected planet, WISPIT 2b. Estimated to be just five ...

Astronomers are closing in on one of the most tantalizing possibilities in planetary science, evidence that a previously unknown world may be lurking in the outer reaches of the solar system. The ...

It may be made from a former star ...