Oxygen is crucial for life as we know it, but before it could build up in our atmosphere, earth had to slow down.

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...

SciShow Space News gives you the update of the historic mission that has, for the first time ever, landed a spacecraft on the surface of a comet!

December has the longest solar days (noon-to-noon) because of the weird way a combination of the axial tilt of the earth and the eccentricity of its elliptical orbit conspire in December. Perihelion + Solstices = Long Days.

There are a few theories that would suggest Jupiter's moon IO has an underground magma ocean. Hank Green explains in this episode of SciShow Space!

There's a lot more to Saturn's rings than just looking awesome! Find out why!

New simulations of a triple-star system in the constellation Orion suggest that a planet might be orbiting three stars, which could drastically increase the amount of the solar systems we believe are out there forming planets! And the...

Today, we're going to talk about how the Earth moves, but to do that, we're going to have to go way back to the early days of the galaxy! Processes that happened before the Earth even formed have led us to the geographic patterns and...

Hank describes how astronomers used a technique called gravitational lensing to find the most distant galaxy ever detected -- and how NASA is embarking on a new program to use this same technique to peer deeper into space than ever...

Scientists have found at least three cycles in nature that can be traced back to the alignment of the planets. And while they won’t tell you anything about your love life or personality, by studying them, we can learn about our planet’s...

Guns in Space

If our sun turned into a black hole, you might think our solar system would be doomed, but in reality that's just not how black holes work.

Mercury is the closest planet to the sun. It has no atmosphere and is, as such, covered in craters. It's also incredibly hot but, surprisingly, has water ice hiding beneath its surface.

TeD Fellow Carrie Nugent is an asteroid hunter -- part of a group of scientists working to discover and catalog our oldest and most numerous cosmic neighbors. Why keep an eye out for asteroids? In this short, fact-filled talk, Nugent...

When stars die, they tend to take everything around them with them. But new evidence appears to show a planet orbiting a white dwarf, and we’re not sure how it survived! Plus, experiments designed to detect dark matter might be capable...

Project Mercury taught NASA a lot about getting people off the surface of Earth and into orbit, and paved the way for all of their future space missions.

Dawn is spiraling in for a closer look at Ceres, and researchers have discovered the best evidence yet for active volcanoes on Venus. Plus, check out Venus and Jupiter right next to each other in the sky!

Australia will perpetually encounter the season opposite to the one we in the northern hemisphere will encounter, so does this means that Australia will never get a white Christmas?

When you were a kid, one of your friends probably told you that if you sneezed with your eyes open, your eyeballs would pop out of your head. But that can't really happen... right?

Hank summarizes the exciting news about Planetary Resources, a company with plans to mine near-earth asteroids for precious metals and water, and what these plans might mean for humanity's future in space.

Welcome back to SciShow Quiz Show! In this episode Hank will be competing with older brother John Green in a battle of science related trivia on behalf of Subbable subscribers Anna Dilley & Andrew Villarreal.

Suppose you placed a camera at a fixed position, took a picture of the sky at the same time every day for an entire year, and overlaid all of the photos on top of each other. What would the sun look like in that combined image? A...

Margaret Hamilton is a pioneer for women in STEM, and her team's software saved Apollo 11's moon landing!

On a cosmic scale, Mercury isn’t very far away, but it's incredibly hard to get there. Getting into orbit around it takes years of flybys in the solar system, but we're going to do it again!