It must have cleared all other celestial bodies, except its own moons, from its orbit.

than any of the planets in the outer solar system. Nevertheless, because it orbited the Sun like a planet, it was classified as a planet and named Pluto, after the god of outer darkness in Roman ...

After a decade-long search, some scientists say a growing number of clues point to the existence of a hidden planet in the Kuiper Belt beyond Neptune — and they may soon have the opportunity to find ...

Though technically not a planet, it has as rich geology as any of its planetary siblings in the solar system A color-enhanced photo of Pluto that was captured by the New Horizons spacecraft in ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. In 2006, the International Astronomical Union (IAU) voted on the definition of a planet.

A Southwest Research Institute-led team combined compositional data of primitive bodies like Kuiper Belt objects, asteroids ...

The all-new destinations include a whole host of moons scattered around our Solar System, including Europa ... are the nearby Venus and the once-planet Pluto, and you can explore all of them ...

The researchers revealed that Uranus’s protective magnetic field was distorted, and seemed wonky and weak, being squashed and ...

As the final planet in our solar system, Pluto is rightly linked to endings ... the planet “tests” the mettle of its children in order to cast out what holds them back. Use a birth chart ...

Pluto is the farthest planet from the sun, not to mention the tiniest planet in our solar system, but it holds immense astrological power right now. This small rock hasn’t experienced a zodiac ...

Astronomers are investigating the possibility of a hidden ninth planet beyond Neptune, which could explain unusual orbital patterns in the Kuiper Belt.