Scientists may have discovered a dwarf planet far beyond Neptune — an unearthing that may disprove a longstanding theory about the possibility of a giant ninth planet. The dwarf planet's existence ...

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 ...

Although hundreds, or perhaps thousands, more solar system bodies may eventually join the list of dwarf planets, the IAU officially recognizes just five at the moment. Here's a brief tour of all ...

Our solar system is home to far more worlds than you might think. While there are only eight known planets, there could be thousands of dwarf planets – Pluto-sized or smaller – lurking at the ...

The smallest object in the solar system that has earned the title of "dwarf planet" (prior to this new discovery) is Ceres, which lies in the asteroid belt between Jupiter and Mars. Ceres is 590 ...

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 ...

The smallest object in the solar system that has earned the title of "dwarf planet" (prior to this new discovery) is Ceres, which lies in the asteroid belt between Jupiter and Mars. Ceres is 590 ...

A potential dwarf planet has been discovered in the outer reaches of our solar system, orbiting beyond Neptune. Its presence there challenges the existence of a hypothetical body known as Planet 9 ...

A large asteroid could be reclassified as a dwarf planet – which could make it the smallest in the solar system – after new research revealed its shape, astronomers said on Monday.

Images of Hygiea showed that the dwarf planet is round, a key requirement of becoming a dwarf planet. At roughly 267 miles across, it will become the smallest of the Solar System's five dwarf planets.

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.

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.