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

Astronomers may have uncovered a potential candidate for the elusive Planet Nine, a hypothetical planet located far beyond ...

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

A team of international scientists has identified a promising Planet Nine candidate by comparing infrared surveys of the sky ...

Our solar system may have a ninth planet after all, following the declassification of Pluto nearly two decades ago, ...

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

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

Researchers for objects that moved slowly between IRAS and AKARI detections. IRAS and AKARI are far-infrared, all-sky surveys ...

A team of astronomers poring through old astronomical data may have seen a candidate for the elusive Planet Nine – a ...

For over a century, astronomers have wondered if there's an extra planet in our Solar System that we haven't been able to see ...

The Solar System consists of our star, the Sun, and everything bound to it by gravity; the planets Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, along with dwarf planets like ...