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.

Billboard's Hip-Hop Rookie of the Month for June also discusses her time on Lil Baby's WHAM Tour and what else she has ...

Pluto was discovered in 1930 in Arizona, but in 2006 scientists decided to cut Pluto from the planetary line up. Here is why Pluto isn't a planet.

When did Pluto stop being a planet, and why? Pluto was always in a tough spot when it came to being a planet. Just 1,477 miles across, it's only one-fifth the diameter of Earth.

She wrote the song "Planet X" 10 years ago, addressing the possibility that Pluto might be downgraded. In 1996, she read an article in USA Today with the headline "Demoting Pluto Is Just Asking ...

Sedna will make its closest approach to the Sun in 2076, giving us a rare opportunity to visit the planetoid before it drifts ...

Pluto, officially a dwarf planet, has surprising complexity on its surface. While certainly a world, not everyone agrees it is a planet.

The James Webb Space Telescope (JWST), operated by NASA, has uncovered intriguing new details about Charon—Pluto’s largest ...

Pluto, our power planet of seismic change and karmic retribution, is stationing direct in the sign of the sea goat for the final time in our lifetimes. Pluto's last push in Capricorn marks the end ...

The whole thing is a bit silly, writes Dave Eicher. Is Pluto a planet? It's still out there, an intriguing, distant body in our solar system.

According to a recent YouGov poll, 35% of Americans think Pluto is not a planet. But they are all wrong—kind of. To get to the bottom of whether Pluto is a planet, I tracked down planetary ...

Pluto, therefore, is not the gravitationally dominant object in its neighborhood — and thus, not a planet, according to the new definition. Sign up for the Live Science daily newsletter now ...