Planet Nine may be even more exotic than astronomers had thought. The putative world, which some scientists think lurks unseen far beyond Pluto's orbit, could be a former "rogue planet" that was ...

Rogue planets are quite unusual –they exist outside of a star system and can even escape their home systems and travel alone through space. Now, researchers James Vesper and Paul Mason with New Mexico ...

Here's your daily reminder that we occupy a tiny corner of the vast, ultimately unknowable universe. According to some scientists, Planet Nine might be a "rogue" planet captured by our solar system as ...

We all grew up learning that our sun has eight friends: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Now, researchers who believe that a ninth planet is actually hanging around ...

The scientific world is still abuzz with speculations as to where exactly one can find the elusive Planet Nine, which was hypothesized as the ninth planet of the solar system as of January last year.

Planet Nine may be even more exotic than astronomers had thought. The putative world, which some scientists think lurks unseen far beyond Pluto’s orbit, could be a former “rogue planet” that was ...