It probably qualifies as a dwarf planet, the same classification as Pluto ... More than 15 years after Pluto was demoted to dwarf planet, the debate, even among scientists, continues.

Many people hold Pluto close in their hearts and refuse to abandon the assertion that it is a planet, although science ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A composite image comparing the relative sizes of our solar system's known dwarf planets ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

In 2006, updated research led to Pluto ... a new planet or not. For now, the outer reaches of our 4.6 billion-year-old solar system continue to be shrouded in mystery, with the classification ...

In August 2006, the International Astronomical Union made the controversial, but correct, decision to demote Pluto from its status as the ninth planet in our Solar System. From that day forward ...

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 ...

Earth has a newly-discovered neighbor in the solar system. But the heavenly body – possibly a dwarf planet à la Pluto – isn't a frequent visitor. Located beyond Neptune, its extreme orbit ...

Astronomers have identified a new trans-Neptunian object, 2017 OF201, located far beyond Pluto. Its enormous size, comparable to dwarf planets, and highly elongated orbit provide valuable insights ...