Almost 20 years after Pluto was infamously downgraded from its status as a planet, scientists now believe they have ...

Scientists have identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a ...

Scientists have recently spotted a huge object far away in the cold outer reaches of our solar system. This ...

Scientists have discovered a colossal object approximately 435 miles wide in the frigid outer reaches of our solar system, ...

Astronomers announced the discovery of a new dwarf planet, provisionally named 2017 OF201, located in the remote outskirts of ...

Researchers discovered a new trans-Neptunian object, 2017 OF201, potentially a dwarf planet, in the outer solar system.

A potential new dwarf planet has been discovered in the outer reaches of the solar system, and its existence poses the ...

The small world was found during a search for the hypothetical Planet Nine, and astronomers say the next time it will reach ...

Astronomers have just uncovered a massive new object at the edge of our solar system — and it could change everything we thought we knew about space. Named 2017 OF201, this trans-Neptunian object ...

In the cold, dark outskirts of planetary systems far beyond the reach of the known planets, mysterious gas giants and ...