Most of the world believed that Earth was the center of the universe for a really long time. Then a few scientists decided to take a closer look.

The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition.

If we want to establish a colony on the Moon, coming up with enough water is a huge challenge. Scientists have long suspected there might be water hiding on the lunar surface. Were they right? Plus, some quick recovery work led to...

We have some good news this week for all the James Webb fans out there, as well as a look a some creative chemistry that may help us find the first solid evidence of an exomoon!

Join Phil for a tour of our capital-M Moon, from surface features, inside to the core, and back in time to theories about its formation.

So it's February 29th and we have 366 days this year instead of 365- what's the deal with Leap Years?

NASA's Cassini spacecraft has detected a huge ocean under the surface of Saturn's moon Enceladus. But how? And what does it really mean? Hank lays out the data -- straight from space to your brain!

The full moon might seem bigger on the horizon than when it's higher up, but when does it actually take up more space in the sky?

We owe a lot to our moon. Beautiful moonlit walks, higher tides, and regular seasons - all are made possible by our little rocky friend. But what would happen if we picked up a second moon?

Is there extraterrestrial life in our solar system? Or are we alone? Take a journey to the ocean worlds on Jupiter and Saturn to investigate the possibility. -- Deep in our solar system, a new era of exploration is unfolding. Beneath the...

Like the Industrial or the Einsteinian Revolution, the Space Race is a trope, or way of organizing historical events into a story that makes sense. In this story, the two great powers that emerged after World War Two—the United States...

Paul Andersen explains how physical systems remain stable and unstable over time. The sum total of interactions acting on the system determine its stability. Feedback loops are used to maintain stability but require energy. If the energy...

Paul Andersen describes our place on the Earth in the Solar System within the Milky Way Galaxy in the Universe. The make-up and origins of the Universe are included along with stellar evolution. A teaching progression K-12 is also included.

The moon's South Pole-Aitken basin is the largest known crater in existence, and there's something big hidden underneath.

In this video Paul Andersen compares and contrasts mechanical and electromagnetic waves. Both types of waves transfer energy through oscillations but mechanical waves requires a medium. Several examples of each type of wave are included.

Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions.

How Big Is The Sun?

Turns out, going to Mars in the 80s could have been a thing.

SciShow Space celebrates the 45th anniversary of the first moon landing by highlighting just four of the most important things we learned from the Apollo 11 mission.

Learn about asteroids, meteors, and comets and how they can affect earth!

This edition of SciShow News really is full of "news." Scientists have discovered a new moon orbiting Neptune, a new tick-borne virus threatening the United States, and a new species of shrew who is a real hero. Let's get to it!

Saturn is the crown jewel of the solar system, beautiful and fascinating. It is a gas giant, and has a broad set of rings made of ice particles. Moons create gaps in the rings via their gravity. Saturn has dozens of moons, including...

In this episode, we discuss the basic nature of gravity, one of the four fundamental forces in our universe.

The solar system is full of strange things. But these three moons are especially strange, and kind of ... ugly.