Two of Pluto's midsize moons may be made of the guts of its largest moon, Charon, new research suggests.

Pluto’s heart-shaped feature, known as Tombaugh Regio, has captivated scientists and the public alike since its discovery.

Pluto, once considered the ninth planet of our solar system, has been a topic of intrigue since its reclassification as a ...

Think you know Pluto? From icy plains to planetary debates, this quiz dives deep into the mysteries of our solar system’s most controversial—and captivating—dwarf planet.

In Roman mythology, Pluto is the god and ruler of the dead. For a return mission to the dwarf planet, Howett and her ...

The atmospheric gases are likely the result of solar heating of Pluto's surface ice, which evaporates due to the slightly higher temperatures experienced during this period. In 1989 Pluto made its ...

Pluto once had a subsurface ocean, and finding these ice volcanoes could suggest that the subsurface ocean is still present -- and that liquid water could be close to the surface.

Pluto’s surface has been reshaped by internal and atmospheric forces, while most of Charon’s surface hasn’t been reshaped for 4 billion years, according to the new reports.

The collision also shaped the distinctive features observed on Pluto’s surface. Geologic formations such as Sputnik Planitia, a vast nitrogen-ice glacier, might have connections to the heat and ...

FLAGSTAFF — As NASA’s New Horizons spacecraft zooms ever closer to Pluto, it is sending back images that make even seasoned scientists’ eyes go wide with excitement. “Like a kid in the ...

Several mysterious dark spots on the surface of Pluto have caught the attention of NASA researchers as the New Horizons probe makes its final approach.

Researchers propose an ammonia-water slurry as the basis for Pluto's newly discovered geologic activity and possible volcanism, and offer a new method to predict planetary vigor.