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...

Some funky orbits near the Kuiper Belt are hinting towards a brand new planet, the elusive ‘Planet X.’ Our friends Mike Brown and Konstantin Batygin of Caltech are working hard to finally spot the potential gas giant through powerful...

Pluto, the small, icy celestial body at the back of the solar system, was downgraded from a regular planet to a dwarf planet in 2006. It has been known as just that for years - the planet that never was. But NASA's New Horizons mission,...

What's happening over and under Pluto's fascinating surface.

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

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)!

Astronomers may have figured out some cool geology on Pluto, and Barnard's star is back in the running for having a planet!

This live-action video program is about the word planet. The program is designed to reinforce and support a student's comprehension and retention of the word planet through use of video footage, photographs, diagrams and colorful,...

Learn why Pluto was once considered a planet but is now classified as a dwarf planet. The video discusses the discovery of the Kuiper Belt and the debates that led to the reclassification of Pluto.

The New Horizons probe, launched in 2006, is on a mission to explore Pluto and its moons. Equipped with advanced cameras and instruments, it will capture images and analyze the atmosphere of Pluto, as well as study its moons. The probe's...

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...

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...

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,...

Pluto's heart is revealing itself to be a major influence on the dwarf planet’s landscape and atmosphere, and scientists used atom probe tomography (APT) for the first time on lunar soil to study it atom by atom!

Earth has seasons, but what about the rest of the planets in the solar system? Let’s take a tour from Mercury to Pluto and see what seasons would be like on all our planetary neighbors. Bring a sweater!

I took a trip to one of Austin's famous moontowers so I could put the enormity of our solar system into perspective. With the help of a grapefruit, and a lot of walking, you'll get an idea of just how tiny everything is out there!!