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 ...

Because it is not gravitationally dominant, Pluto is considered a dwarf planet.However, only 5% of the world's astronomers voted on the redefinition, sparking controversy in the astronomy ...

Pluto, the largest of those dwarf planets, has a diameter of about 1,477 miles. Don't miss out on what's happening! Stay in touch with breaking news, as it happens, conveniently in your email inbox.

Potential discovery of new dwarf planet adds wrinkle to Planet Nine theory 017OF201 is a trans-Neptune object with a unique orbit located past the Kuiper Belt. By Nick Butler Fox News.

But Pluto turned out to be too tiny — it is smaller than the moon — and was demoted to dwarf planet status in 2006. There are now four other officially recognized dwarf planets, and Cheng ...

Pluto, the largest of those dwarf planets, has a diameter of about 1,477 miles (2,377 km). The mass of 2017 OF201 is estimated to be about 20,000 times smaller than Earth's and 50 times smaller ...