Traditional theories suggest that Pluto's formation process is similar to that of other celestial bodies in the Kuiper Belt, ...

At the vast edge of the solar system, Pluto has long been perceived as a cold and lonely dwarf planet. However, a recent ...

Pluto, once thought to be a frozen and lifeless world drifting on the edge of our solar system, may be harboring one of its ...

New Horizons sends back best photos yet as probe closes in on Pluto. New color images from NASA’s New Horizons spacecraft show two very different faces of the mysterious dwarf planet, one with a ...

WEST LAFAYETTE, Ind. — 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 ...

Pluto may have been demoted to non-planet status, but it still commands a court of five moons, as is fitting for the king of ...

Images of Pluto captured by NASA's New Horizons mission have revealed a new surprise: ice volcanoes. The spacecraft performed a flyby of the dwarf planet and its moons in July 2015, and the insights ...

NASA explains Pluto's newly discovered "blue sky" and whether or not potential astronauts could ever witness an Earth-like sunrise. The New Horizons space probe sent back its first color images of ...

"Makemake is one of the largest and brightest icy worlds beyond Neptune, and its surface is dominated by frozen methane," ...

A landmark on Pluto that was previously designated as an impact crater may actually be the caldera of a supervolcano that has exploded in the past few million years, new research suggests. But not ...