Pluto is now the most well known of the outer worlds beyond Neptune—and the darling of the solar system Kayla Randall | Digital Editor, Museums A 24-year-old observatory assistant from the Midwest ...

Twenty years after Pluto lost its planetary status, the debate continues as scientists still disagree over what defines a planet.

For 76 years, generations of students learned that our solar system had nine planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and Pluto. Now, in 2026, some still can't get over ...

Tony Phillips is an experienced Microsoft Office user with a dual-honors degree in Linguistics and Hispanic Studies. Prior to starting with How-to Geek in January 2024, he worked as a document ...

Pluto is not a planet. You've probably heard this statement many's a time, and maybe even wondered why. Many of us remember being taught at school that Pluto was the 9th planet of the Solar System. So ...

If you grew up memorising the solar system, chances are you learned there were nine planets with Pluto proudly bringing up the rear. Then, almost overnight, textbooks changed. Pluto was out, and the ...

It was 20 years ago that our solar system lost a planet. Well, it didn't really go anywhere, but Pluto is no longer a planet because it's been reclassified. I'm sure you figured out in school that ...