Let's talk about destruction and creation, burning towers, rock bottom, regeneration, and using ashes as clay. Pluto, our planet of profound change and ultimate reckoning, has set up shop in ...

When Pluto was a planet, students learned the order of the planets with the phrase, "My very eager mother just sat upon new paint,' using the first letter of each name of a planet. Now that Pluto ...

(Correction: An earlier version of this story misstated how far Pluto is from the sun. The correct number is 3.7 billion miles.) What was discovered in Flagstaff, Arizona, and killed off in Prague?

Pluto was once considered the ninth planet in the solar system. It was demoted in 2006. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works ...

What Pluto can teach us about planets and our solar system : Short Wave Pluto hasn't been a planet for almost 20 years. In the early 2000s, scientists discovered several objects of a similar size ...

For a frigid planet, Pluto may be hiding a sloshy surprise roughly 125 miles beneath its shell. Scientists suspect that a global ocean of liquid water is lurking right under the surface.

Today is officially designated as Pluto Demoted Day, which commemorates when the International Astronomical Union (IAU) voted on August 24, 2006 to rewrite the definition of a planet, resulting in ...

Rep. Justin Wilmeth is advocating for the Pluto to become Arizona's state planet. The bill is now in Gov. Katie Hobbs' hands. Here's what to know.

PHOENIX - Pluto may soon be named the state planet of Arizona, as a bill that aims to make that happen advanced at the State Capitol on Jan. 31. House Bill 2477 is sponsored by State ...

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.