Astronomers have picked up evidence of an Earth-sized world, distinct from the previously hypothesised Planet Nine and Planet ...

A new study suggests the existence of Planet Y. This hidden planet may be affecting the Kuiper Belt. The gravity of Planet Y ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

Orbiting in the far reaches of the solar system are pristine remnants from its beginning. These unique objects, called ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known as 2023 KQ14, an object discovered by the Subaru telescope in Hawaii.

Nonetheless, the possibility remains there could still be a massive planet affecting the orbits of bodies within the Kuiper Belt. But astronomers’ ability to find any such planet remains somewhat ...

A conceptual mission known as "Persephone" could explore Pluto and its moons for 50 years — if it ever gets funded and ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the planet nine theory. The latest is known as 2023 KQ14, an object discovered by the Subaru telescope in Hawaii.

New discoveries of objects in the Kuiper Belt have also presented challenges for the planet nine theory. The latest is known as 2023 KQ14, an object discovered by the Subaru telescope in Hawaii.

Hundreds of millions of years ago, an asteroid caught by Earth's gravity might have fragmented, creating a temporary ring ...

A mysterious new world may be hiding in the outer reaches of our solar system. According to arecent study published on arXiv ...