A new study suggests that the icy dwarf planet Pluto actually started out hot, formed quickly and had a subsurface ocean early in its history.

Because Pluto is so dim, you need a telescope to see it. “A backyard telescope could do it under the right conditions,” says ...

There may be a dispute in the scientific community about whether Pluto deserves to be a planet, but researchers have found evidence that the dwarf planet may have had an ocean billions of years ago.

A gassy insulating layer probably keeps Pluto's liquid-water ocean from freezing solid, a new study reports. And something similar could be happening under the surfaces of frigid worlds in other ...

Dwarf planet Pluto may be hiding an icy ocean beneath its surface, according to two new reports published by the scientific journal Nature.

If you’re planning on visiting Pluto anytime soon, best to bring some warm boots. A frigid, possibly “slushy” subsurface ocean could be lurking under the crust of the dwarf planet.

How could a subsurface ocean on Pluto, should it really exist, possibly stay unfrozen?

Scientists have been saying for months that Pluto could have a salty ocean beneath its icy surface, but now they've worked out just how deep it could go.

Scientists looking deep into the “heart” of Pluto have discovered more evidence that the dwarf planet could be hiding a liquid ocean beneath its icy surface.

Researchers have long thought that Pluto began as an icy sphere when it formed in the Kuiper Belt, a home to cold, dark objects on the edge of our solar system.