Today, the dwarf planet Pluto orbits the sun from the edge of our solar system and its surface temperature is an inhospitable negative 378 to negative 396 degrees Fahrenheit. But a new study ...

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

The IAU has officially recognized only five dwarf planets: Pluto, Haumea, Makemake and Eris in the Kuiper Belt, plus Ceres in the asteroid belt.

Haumea is it's kind of the shape of a deflated squashed football and on the on the long axis of it is about the same size as Pluto. And then the shorter axes are maybe like half the size of Pluto.

Pluto, Ceres, Eris, Makemake, and Haumea were designated as dwarf planets with acknowledgment that more would likely be discovered in the future.

Pluto's demotion was partially caused by us getting better at spotting planets (or "dwarf planets," if you prefer). In the early 2000s, astronomers identified Haumea, Eris, Makemake, and other ...

Pluto Stopped Being A Planet 17 Years Ago Today. Why? It made some people very angry, and for others, it still hurts.

Pluto is most prominent among the four known trans-Neptunian dwarf planets, but the astronomers are also very interested in the exotic Haumea; an elongated, fast rotating body, covered with ...

The mystery of how Pluto got a giant heart-shaped feature on its surface has finally been solved by an international team of astrophysicists. The team is the first to successfully reproduce the ...

What processes during the formation of Pluto's largest moon, Charon, potentially led to it having cryovolcanism, and even an internal ocean? This is what a recent study presented at the 56th Lunar ...

Pluto isn’t the only dwarf planet in our solar system's outer reaches. Now is an ideal time to look for the egg-shaped Haumea, says Abigail Beall ...