Scientists have identified an object about 700km wide inhabiting the frigid outer reaches of our solar system that might ...

The TNO, which are described as minor planets that orbit the sun at a greater distance than Neptune, were found on the edge ...

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

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

Less than 1% of this dwarf planet candidate's orbit is close enough to detect, which means astronomers are lucky to have ...

A series of studies have cast doubt on the sensational claim that "the strongest evidence yet" was found that life exists ...

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

Cheng discovered the object as part of an ongoing research project to identify TNOs and possible new planets in the outer ...

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

As it orbits the sun once every 25,000 years, the celestial body 2017 OF201 travels beyond the Kuiper Belt into a region ...

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

It's an evocative idea that has long bedeviled scientists: a huge and mysterious planet is lurking in the darkness at the ...