Pluto

Lacking a strong magnetic shield, Pluto's thin atmosphere is being eroded into space — but Charon is doing its bit to protect its dwarf planet buddy.

Pluto's strange "snakeskin" terrain is composed of ice ridges similar to, but much larger than, those found on Earth, a new study suggests.

The huge icy plain on Pluto known as Sputnik Planitia may not overlie an impact crater, as many researchers had assumed, a new study reports.

Pluto's famous heart-shaped feature made the dwarf planet roll over the eons, and this reorientation probably wouldn't have been possible without a subsurface ocean, new research suggests.

The northwestern chamber of Pluto's "heart" has had its name changed from Sputnik Planum to Sputnik Planitia, to better reflect the characteristics of the region.

The last piece of New Horizons flyby data reached mission control at the Johns Hopkins Applied Physics Laboratory (APL) in Laurel, Maryland, early Tuesday morning (Oct. 25), NASA officials said.

On Pluto's moon Charon, scientists have found evidence of landslides. This is the first time this geologic feature has been discovered in the Kuiper Belt, according to New Horizons scientists.

More than a half dozen clouds may have been seen in Pluto's hazy atmosphere, researchers announced today (Oct. 18).

The tiny, faraway object that NASA's New Horizons spacecraft will fly by in 2019 is even redder than Pluto, new observations by the Hubble Space Telescope suggest.

A new simulation of how Pluto got its "heart" reveals that the dwarf planet most likely has a deep ocean beneath its surface.