A stronomers have discovered an incredibly rare non-planetary body lurking on the outer reaches of the Solar System, which ...

We still don't know for sure if there's a ninth planet in our solar system, but a new discovery could help to prove that ...

Planet Nine should appear stationary over the course of a single day but show detectable movement over months.

A tiny object far beyond Pluto, newly discovered by the Subaru Telescope, could reshape our understanding of the early Solar System. Named 2023 KQ14, this rare “sednoid” follows an unusual orbit that ...

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

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

For reference, Pluto’s average distance from the Sun is about 40 AU, so 2023 KQ14 is quite distant. At 23.4 billion miles (37 ...

The newfound exoplanet, called Kepler-139f, is a gigantic world roughly twice the mass of Neptune and 35 times the mass of ...

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

The United Nations’ top court in a landmark advisory opinion says countries could be in violation of international law if ...