On the 95th anniversary of its discovery, Pluto remains one of the most beloved and enigmatic worlds in our solar system, ...

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

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

The short answer: Officially, no, Pluto is not a planet. In 2006, ... Eris, and the other dwarf planets or draw it to exclude the inner rocky planets including Earth. Finally, ...

Pluto was demoted from a planet to a dwarf planet in 2006. So why is its status still so controversial today? ... It must have enough mass to draw itself into a round shape.

Metzger’s point is that we could just as easily draw this line to include Pluto, Eris, and other dwarf planets — or draw it to exclude Earth, Venus, and the other terrestrial ones.

Prague, Czech Republic – For decades, it’s been confused with a cartoon dog and ridiculed as a puny poser. Now Pluto, the solar system’s consummate cling-on, has suffered its worst ...

Is Pluto a planet? It's still out there, an intriguing, ... was hailed as a hero, Disney named a cartoon dog after the new planet, and for 76 years the solar system was a happy place. And then, ...

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 ...

After a week of contentious debate, astronomers appear likely to demote puny Pluto to a "dwarf," slightly shrinking Earth's planetary neighborhood. IE 11 is not supported.

At just 23 years old, Tombaugh sent his drawings, unsolicited, to several institutions and observatories around the United States, ... Obviously, many people do care about Pluto's planet status.