Back to Article List Astro for kids: What is a dwarf planet? The dwarf planets in our Solar System are cold, dark, far away and full of surprises.

Now classified as a dwarf planet, Pluto was discovered in 1930. According to NASA, the dwarf planet is in a region of the solar system known as the Kuiper Belt.

Curious Kids is a series for children of all ages. Have a question you’d like an expert to answer? Send it to . “Comet,” “star” and “planet” are category names that immediately tell ...

For the better part of a century, we believed there were nine planets in our solar system, with Pluto being the farthest from the sun. Since the discovery of more Pluto-sized dwarf planets, that ...

Dwarf planet defined In 2006, and after much debate, the International Astronomical Union came up with a new definition for a planet. And for the first time, the term “dwarf planet” was used.

Even if life never took hold on Ceres, the discovery could help broaden the range of environments that could potentially be ...

Key Facts Astronomers at University of Sheffield observed rings around a Pluto-sized dwarf planet called Quaoar, beyond Neptune, with rings farther from the dwarf planet than Saturn’s iconic rings.

Though Pluto has formally been considered a dwarf planet for almost two decades, it still has many lessons left for planetary scientists — including hints about how the solar system formed.

Dwarf planets Haumea and Makemake are the latest additions to the Maine Solar System Model, billed as the largest solar system model in the western hemisphere.

Makemake (MAH-kee MAH-kee), located more than a billion miles beyond Pluto, is a cold little place home to a new, dark moon discovered by the Hubble Space Telescope. Read post here.

U.S. astronomers hunting for "Planet Nine" have instead stumbled on what appears to be a new dwarf planet in the solar system's outer reaches.

Samantha Lawler, Assistant professor, Astronomy, University of Regina "Why does it matter if Pluto is a planet or a dwarf planet? Because for me it just makes it more confusing in our solar system.