In 2006, the International Astronomical Union demoted Pluto to one of dozens of dwarf planets. After its discovery in 1930, Pluto was declared the ninth planet in our solar system and quickly ...

Researchers found the object named 2017 OF201 while searching for "Planet Nine" - a hypothetical planet thought to exist ...

Giant planets are not rare per se — after all, we have four in our own solar system. Such large worlds are, however, rarely ...

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

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 ...

In a thrilling development that challenges long-held assumptions about the outer reaches of our solar system, astronomers have discovered an extraordinary new object—possibly a dwarf planet—lurking ...

But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit circumnavigates the sun once every 25,000 years, taking it ...

The new object is one of the most distant visible objects in our solar system. Astronomers have indeed discovered a potential new dwarf planet in the outer reaches of our solar system, far beyond ...