Astronomers have narrowed down on the possible location in the Solar System where the elusive planet nine may be hiding, an advance that could shed more light on the evolution of our abode in the ...

Ever since Pluto was demoted from planet status, astronomers believe a real Planet Nine exists in the solar system ...

For a long time, children learning about space in school were taught that there were nine planets in our solar system. Then, ...

Scientists have been on the hunt for a possible ninth planet in our solar system for some time. The existence of this elusive ...

Our solar system used to have nine planets ... objects beyond Neptune’s orbit that also happens to be the former ninth planet’s neighborhood. The 2005 revelation set off a chain of events ...

Other researchers, such as Konstantin Batygin and Michael Brown, argue that an unseen planet several times larger than Earth could be "shepherding" smaller objects in the solar system. Batygin and ...

An curved arrow pointing right. Astronomers say they've discovered a ninth planet 200 times farther from the Sun than Earth. Produced by Emmanuel Ocbazghi. Original Reporting by Jessica Orwig.

the fleeting close encounter will unveil the last of the classical solar system’s unexplored worlds. We’ll finally get to meet the former ninth planet face-to-face—to really see its surface ...

We may soon find out. Is there a 9th planet out there? We may soon find out. Earth is a geological oddball in our solar system. This is why. Earth is a geological oddball in our solar system.

On a clear night, several planets in our solar system were visible without a telescope ... Another possibility is the telescope doesn’t identify a ninth planet but finds more distant objects than what ...