A sweeping new ICE operation shows how Donald Trump’s focus on immigration is reshaping federal law enforcement.

A possible new dwarf planet has been discovered at the edge of our solar system, so far-flung that it takes around 25,000 ...

A recently discovered celestial body is rewriting our knowledge of the Kuiper Belt and maybe challenging the existence of the ...

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 identified an object about 435 miles (700 km) wide inhabiting the frigid outer reaches of our solar system that might qualify as a dwarf planet, spotting it as it travels on a highly ...

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

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 ...

A team of astronomers believe they may have discovered a new dwarf planet—just like Pluto—on the edge of our solar system. The object—which orbits out beyond Neptune—has been named "2017 OF201" by the ...

Since its discovery in 1930, Pluto was well-known as the ninth planet in the solar system, far beyond Neptune ... declared that the faraway orb was a dwarf planet due to its location, known ...

The International Astronomical Union reclassified Pluto as a dwarf planet because it does not ... with its icy surface and distant orbit beyond Neptune. But in 2006, Pluto’s planetary reign ...

It was just one of many small icy bodies in the Kuiper Belt, a region beyond ... of a planet, leading to Pluto’s demotion. Alongside Pluto, Eris was also classified as a dwarf planet under ...