Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory ...

When most people think of our Solar System, they think of the 8 planets officially recognized by the International Astronomical Union (IAU). But what if I told you there are at least 40 planets, and ...

How many dwarf planets are there in our solar system? The recent discovery of 2017 OF201 makes the tally anywhere between ...

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 ...

The category "dwarf planet" was created in 2006 to make room for the many large bodies being discovered on the outer reaches of the solar system. Here's a tour of the five currently recognized ...

A newly found object may set a new record for the most distant dwarf planet in the solar system. The object, called V774104, lies about nine and a half billion miles from the sun, or two to three ...

Dwarf planets are worlds too small to be full-fledged planets, but too big to fit in smaller astronomical categories. Pluto, the most famous dwarf planet, lost its planet status in 2006.

Astronomers have found a dwarf planet out beyond Neptune called “The Goblin” because of its initial discovery around Halloween. The Goblin, officially named 2015 TG387, joins other small ...

Back to Article List Does our solar system have a new dwarf planet? The recently discovered object has a diameter about one-third that of Pluto.

Learn about the recently discovered trans-Neptunian object that may eventually join Pluto as a dwarf planet, found at the edge of our solar system.

The category "dwarf planet" was created in 2006 to make room for the many large bodies being discovered on the outer reaches of the solar system. Here's a tour of the five currently recognized ...

A possible dwarf planet, like Pluto, has been observed in our solar system, according to a preprint published in arXiv. The area of space where this planet was found was previously thought empty.