Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Is there a massive undiscovered planet on the outer reaches of the Solar System? The idea has been around since before the ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

A telescope has discovered a new world on the edge of the Milky Way – potentially confirming the ‘Planet X’ theory. Beyond ...

A telescope has discovered a new world on the edge of the Milky Way – potentially confirming the ‘Planet X’ theory. Beyond Neptune, a smaller ‘ninth’ planet has been identified in the Kuiper Belt. If ...

Find out why "Planet Money" is on TIME's list of the 100 best podcasts of all time.

In a competitive situation, Netflix has landed for development 'Captain Planet' live-action series from Berlanti Productions and Appian Way.

“BOYS II PLANET K” and “BOYS II PLANET C” were originally intended to air as two separate audition programs, with each show debuting its own boy group.

How hot can Earth get? Our planet’s climate history holds clues A tour through the planet’s past suggests the ways life will survive global warming — or not ...