2017 OF201 is about one-third the size of Pluto, which was reclassified as a dwarf planet in August 2006, and "is likely large enough to qualify as a dwarf planet, and its orbit is extremely wide ...

The post Scientists Might Just Have Discovered Another Dwarf Planet Sibling For Pluto first on TwistedSifter. In 2006, Ceres – located in our solar system’s main asteroid belt – was officially ...

Is there a massive undiscovered planet on the outer reaches of the solar system? The idea has been around since before the ...

A telescope has discovered a new world on the edge of the Milky Way – potentially confirming the ‘Planet X’ theory. Beyond ...

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.

In 2006, Pluto was famously demoted from a planet to a dwarf planet. It remains the most famous dwarf planet today, but there are others in our solar system, including potentially hundreds that ...