The bunching, they theorized, was due to the pull of gravity from an unknown planet—one that later came to be called Planet 9 ...

Planet Nine, as the predicted planet is referred to, was first postulated in 2016 by Caltech's Konstantin Batygin and Michael Brown, the latter having also discovered the dwarf planet Eris in 2005.

often referred to as Planet Nine. If found, this discovery could change the understanding of planetary systems. The search for Planet Nine began in 2014. Astronomers Scott Sheppard and Chadwick ...

“Planet Nine”, dubbed, has fascinated scientists for its ability to account for “anomalous” motions of objects located faraway from Neptune. As found, Planet Nine would be a paradigm shift for our ...

Brown found these bodies by scouring a massive number ... and where we might finally find Planet 9. In studying the little worlds in the Kuiper Belt, we realized that their orbits are not in ...

Opinions expressed by Forbes Contributors are their own. Jamie Carter is an award-winning reporter who covers the night sky. Scientists have discovered two “super-Earth” exoplanets, one of ...