"It is possible that a planet once existed in the solar system but was later ejected, causing the unusual orbits we see today ...

Astronomers have discovered a "fossil" world lying in the outskirts of the solar system, according to new research.

The Solar System is a fascinating place, with each planet orbiting the Sun at its own unique distance. But how far apart are ...

The astronomers observed hot minerals just beginning to solidify – the first specks of planet-forming material, the ...

Researchers use the Subaru Telescope in Hawaii to find a small object on the outer edge of the Solar System. Nicknamed ...

Astronomers have discovered a new world circling the outer edges of our solar system. So far, there are only four known ...

Despite the powerful telescopes that modern astronomers have to work with, the distant reaches of the Solar System are still ...

Astronomers have discovered the earliest seeds of rocky planets forming around a baby sun-like star, an unprecedented ...

Ammonite was discovered using the Subaru Telescope in Hawaii, with follow-up confirmation from the Canada-France-Hawaii ...

Astronomers have hoped for the existence of Planet Nine for years. Things were looking promising, but this discovery might ...