Hubble discovered a white dwarf planet devouring a Pluto-like object, revealing debris rich in water and nitrogen.

Normally when a medium-size star dies, it blasts away the bulk of material in its system. The Hubble discovery was surprising ...

Data from NASA’s New Horizons spacecraft point to more prevalent water ice on Pluto’s surface than previously thought. This false-color image, derived from observations in infrared light by the ...

Astronomers have detected the chemical fingerprint of a frozen, water-rich planetary fragment being devoured by a white dwarf ...

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 ...

When 1I/'Oumuamua was first spotted in 2017, astronomers quickly determined that it came from outside the solar system. But ...

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

After years of research, scientists now hypothesize that giant dome-like formations that were first photographed by NASA’s New Horizons spacecraft in 2015 were recently active icy volcanoes, also ...

Giant ice volcanos were active ‘relatively recently’ on Pluto, altering its surface, scientists say. Images taken of Pluto reveal a region of strange terrain previously unobserved in our solar system, ...

Massive ice volcanoes found on the former planet Pluto hint at the possibility of liquid water located deep beneath its surface. The volcanoes, multiple miles high, have resurfaced large areas of ...

(CNN) -- While Earth’s volcanoes are spewing lava, scientists say Pluto had much cooler volcanic eruptions. A new study reveals the dwarf planet has giant ice volcanoes that were active as recently as ...