For years, astronomers have toyed with the idea that the Sun hides an extra planet so distant and dim that even the best ...

Astronomers claim to have discovered a new ninth planet in our solar system, according to research led by Terry Long Phan ...

Astronomers may have found a candidate for Planet Nine. This planet is beyond Neptune. The finding could be the first ...

There have been questions about a mysterious ninth planet in our solar system for nearly a decade. Pluto was unseated as ...

Researchers have found a candidate for the hypothetical Planet Nine, which could be an undiscovered giant planet way out in ...

The ongoing search for an additional planet at the solar system's edge has identified a new candidate, potentially ...

Staff member of cookware company Supor promotes rice cookers via livestream during the 137th edition of the China Import and ...

A new look through decades-old data has unveiled some of the most compelling evidence yet of a hidden ninth planet in the far ...

Chemist and nanoscientist Charles Lieber says he aims to ‘realise more scientific dreams in the vibrant and innovative city ...

Using two infrared space telescopes and a 23-year gap, scientists may have spotted a mysterious, slow-moving object beyond ...

The presence of another planet in the solar system could explain the odd movements of some of the bodies in the Kuiper Belt.

If the object really is Planet Nine, it would be larger than Neptune and exist 700 times further from the sun than Earth.