A conceptual mission known as "Persephone" could explore Pluto and its moons for 50 years — if it ever gets funded and ...

New discoveries of objects in the Kuiper Belt have also presented challenges for the Planet Nine theory. The latest is known ...

You might be thinking about a giant trilobite found on Pluto, or maybe a dinosaur skeleton on the planet. However, when ...

The caldera may have blasted out its cryomagma in a single explosive event, or it may have spread its eruptions over time.

New data from the James Webb telescope reveals that Pluto's strange atmospheric haze controls its climate, surprising ...

Pluto’s mysterious far side may conceal towering ice formations, according to research offering clues about the dwarf ...

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

The science community may be ecstatic over the discovery of a ninth planet, but the former planet "Pluto" had a totally different reaction. Hours after scientists announced there's solid evidence ...

The frozen surface of the dwarf planet Eris looks a lot like that of its smaller neighbor Pluto, new research has found. Both frozen worlds are covered predominantly with nitrogen ice, a research ...

That’s twice as far as the most famous dwarf planet, Pluto, which is 2340 kilometres wide and also beats the previous record holder, a 1000-kilometre-wide planetoid called Sedna, discovered in ...

New Horizons has been carrying science instruments on its 3 billion mile, nine-and-a-half year journey to Pluto, and an ounce of the astronomer's ashes have also been along for the ride.

On Monday, NASA said information from New Horizons revealed Pluto is 1,473 miles in diameter -- larger than what scientists previously believed. "The size of Pluto has been debated since its ...