Pluto's not a planet. We're sorry, but we think it's time you move on. If you've gone through all your breakup music and Meg Ryan movies, and you still can't get over it, then SciShow Space will get out the ice cream, cuddle up with you...

I'm sure most of us grew up with the knowledge that Pluto was our solar system's ninth planet. So what changed about the definition?

Many of us grew up with the knowledge that Pluto was our solar system's ninth planet. So what changed about the definition?

The International Astronomical Union should ‘rescind their non-scientific definition’ of Pluto as a dwarf planet, according to a five-year study

The ESA is working on a 'fresh-squeezed' spacecraft that will explore Jupiter's moons, and the New Horizons team makes a case for Pluto (and many others)!

Nigel Goes to Space Join Nigel as he takes you on his journey to the stars and beyond! Subscribe to Naked Science –http://goo.gl/wpc2Q1' target='_blank' rel='nofollow'>Science – Pluto is a dwarf planet in the Kuiper belt, a ring of...

You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast. The surprisingly vicious debate over the planetary status of Pluto has given us a fascinating glimpse into what a scientific definition really is....

- Help support more content like this! Pluto was considered the ninth planet in the solar system for more than 75 years, but in 2006 it was reclassified as a...

Tiny wobbles and faint twinkles that have led astronomers to nearly 5,000 new worlds. Subscribe and turn on notifications 🔔 so you don't miss any videosf='http://goo.gl/0bsAjO' target='_blank' rel='nofollow'>videos Pluto was...

Something heavy seems to be causing Uranus and Neptune to move in a different orbit than what we can currently account for with the celestial objects we know of. Is there a 9th planet? Does planet 9 exist? Is planet X...

Pluto is not a planet...or is it? Next on the "Rocket Ranch.”

A probe has found evidence of ice volcanoes on Pluto's surface, suggesting the dwarf planet may not be as inactive as scientists originally thought. Reuters reports that when NASA's New Horizons spacecraft flew past Pluto on July 14, it...

We've just wrapped up a survey of all the planets and moons in the solar system. But is that all there is? Not even close! There are tons of objects that make up the asteroid belt, the Kuiper belt, the Oort cloud, you can't even believe...

Without a spacesuit, there is no chance of surviving in the scary cosmic void. In science fiction movies, we often see people’s heads exploding or being frozen by the apparent pressure differential or lack of heat, respectively. As long...

Without a spacesuit, there is no chance of surviving in the scary cosmic void. In science fiction movies, we often see peoples heads exploding or being frozen by the apparent pressure differential or lack of heat, respectively. As long...

Check out the "What is a Day?" interactive video at
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It's super cool!! (and made by Jasper Palfree & the MinuteEarth/MinutePhysics...

Patreon=Twitter//www.patreon.com/user?u=5337771' target='_blank' rel='nofollow'>Patreon SystemxplainYT' target='_blank' relGods?ollow'>TwFacts ThisMercuryis out Factsis world! Get it? No? OkName?ll get...

Are Pterodactyls and other pterosaurs considered dinosaurs? There are flying dinosaurs, right? And what are dimetrodon and plesiosaurs? Paleontologist Danny Barta explains what a dinosaur is, and is not! If you’re more of a space person,...

Simulations of young stellar systems suggest that planets embedded in a circumstellar disk can produce many distinctive structures, including rings, gaps and spiral arms. This video compares computer simulations of hypothetical...

While Neptune, the most distant planet in our Solar System, is 4.5 billion kilometers away from the Sun, Uranus, the second-farthest planet, is just 2.88 billion kilometers away. Uranus is more than a billion kilometers away from...

While Neptune, the most distant planet in our Solar System, is 4.5 billion kilometers away from the Sun, Uranus, the second-farthest planet, is just 2.88 billion kilometers away. Uranus is more than a billion kilometers away from...

Remember those old space movies where spaceships had to maneuver through a bunch of asteroids scattered around and blocking the path of the ship? Well, that's not really true. The asteroid belt contains asteroids which are so far apart...

Remember those old space movies where spaceships had to maneuver through a bunch of asteroids scattered around and blocking the path of the ship? Well, that's not really true. The asteroid belt contains asteroids which are so far apart...

Physics Girl astrophysics series - Brown Dwarfs are among the most recently observed objects in the universe. They have at MOST 8% the mass of the Sun. The lower mass boundary is not known! So they are halfway between stars and gas giant...