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 ...

Astronomers detected both X-ray and radio pulses from a single mysterious space object, known as ASKAP J1832-0911, every 44 ...

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 ...

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

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 ...