Comets are famous for having space tails. But they're not the only ones! Asteroids, planets, and even stars can rock tails of their own.

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....

Hank faces off against Minute Physics's Henry Reich in a battle of eccentricities, fashion, and plant puns.

After observing what we thought was just a big asteroid in the asteroid belt, a team of astronomers now thinks this might qualify as a dwarf planet. And scientists had the chance to directly observe the collision of two neutron stars for...

Astronomer Jean-Luc Margot has come up with a new definition for planets that may help us categorize worlds outside of the solar system, and we may have also discovered a new dwarf planet within the solar system!

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!

Hank fills us in on the four exploratory missions to space that he is most excited about - New Horizons is going to Pluto and the Kuiper belt; Juno is on it's way to Jupiter; Dawn is exploring two large asteroids; Rosetta will land on a...

Back in 2014, an international team of astronomers was taking pictures of distant galaxies, when they noticed a dot moving across their images. Could it be Planet Nine?

SciShow Space brings you NEWS FROM THE FUTURE, with details about the space missions to look forward to in 2015.

SciShow Space News explains how we lost track of a resupply mission, explores Pluto’s newfound ice caps, and helps you find Mercury.

SciShow Space takes you to a distant, ancient black hole that … really shouldn’t be, and psyches you up for the Dawn spacecraft’s final approach to Ceres!

NASA’s Juno spacecraft is a trooper as it continues its 2-year-long mission.

New Horizons is teaching us all about Pluto! And it's definitely not what we were expecting.

Several companies are developing 3D printers that might eventually be able to print organs...in space! What!?

Welcome to SciShow Tangents, the lightly competitive game show podcast brought to you by the team behind SciShow! For too long, you've only been able to hear SciShow Tangents. Well, no more! SciShow Tangents has officially come to...

In this video Paul Andersen explains how to have your students engage in argumentation in the science classroom.

This week in SciShow Space News we bring you the latest on what to expect from NASA's New Horizons deep space mission and what asteroids to watch for in the coming years!

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...

Since New Horizons flew by Pluto on July 14, 2015, it's completely redefined what we know about the dwarf planet and its largest moon Charon. New Horizons' mission will continue to be full of surprises, but here's what we've learned so far

Jessi introduces you to some of the most newly-named members of the solar system: the five dwarf planets!

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...

In this video, Nova takes kids on a space expedition through our solar system. They explore each planet, learning interesting facts and discovering the unique characteristics of each one. From the scorching heat of Mercury to the stormy...

NASA's Dawn mission finished in 2017. What did it discover while in orbit around Ceres?

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