The universe is incredibly old, astoundingly vast and populated by trillions of planets -- so where are all the aliens? Astronomer Stephen Webb has an explanation: we're alone in the universe. In a mind-expanding talk, he spells out the...

Humans are full of microbes. Humans also went to the Moon. Does that mean we left colonies over there?

We often think of the ocean’s tide as a simple rise and fall, connected to the motion of the Moon. But on any given shore, the reality is much more complex and oceanic scientists have realized recently that there’s another, more...

We have no ways to directly observe molecules and what they do -- but Drew Berry wants to change that. He demos his scientifically accurate (and entertaining!) animations that help researchers see unseeable processes within our own cells.

The Apollo 11 mission had many opportunities for things to go awry, and they almost did! Find out how a felt-tipped pen may have saved the lives of the first astronauts on the moon, and more!

Before every launch, there's a crawl.

In this video Paul Andersen explains how an object with mass placed in a gravitational field experiences a gravitational force. On the Earth this gravitational force is known as weight. The gravitational force is equal to the product...

Reports of a fireball streaking through the sky are never a good sign after losing contact with a rocket.

From "superhabitable planets" that can potentially sustain life longer than earth to rogue planets that don't even orbit a star, we’ve talked about some strange places that could host extraterrestrial life over the last few years. Here...

The idea that the Moon is a blown-off chunk of the Earth is known as the giant impact hypothesis - but the presence of carbon on the Moon throws this hypothesis into question.

People ask Google everything under the sun. One of the most commonly searched questions in the world is “How old is Earth?” SciShow has the answer!

Hank describes to us some news stories that illustrate how science is continually changing the things we think we "know" - from the status of various animals species, to the way our senses work and even where the Moon came from -...

Giant disks around baby stars filled with gas and dust provide the material to make all sorts of planets, and new evidence proves that our solar system’s had a massive gap in it! And the water vapor in Jupiter’s moon, Europa, might not...

Air resistance! It's a thing! In this episode of Crash Course Kids, Sabrina does her own Astronaut Experiment to show us how we can prove it!

From brains to heavenly bodies, this week brings us some super-sized science... BigBrain is the highest resolution map of the human brain that's ever existed; a super high resolution interactive model of King Tut's tomb for...

The Dark Side of the Moon Explained in Ten Seconds

Get your eclipse glasses ready because the a total solar eclipse is an astronomical event unlike any other.

Hank gets to the bottom of this "faster-than-the-speed-of-light-neutrino" kerfuffle, discusses some ancient stuff, and announces the winner of the award for worst science in a film

The European Space Agency is hoping to establish an inhabited research base on the moon by the 2020s. But living in this "moon camp" won't be easy. How will humans deal with the cosmic radiation? What will the inhabitants eat? And what's...

In five billion years, the Sun's going to evolve into a red giant. That's bad news for Earth, but exciting for some of the worlds a little farther out.

In this collection of classic MinuteEarth videos, we travel beyond Earth and explore some of our favorite mysteries about space.

There's still a lot we don't know about the moon!

Out of billions of galaxies and billions of stars, how do we find Earth-like habitable worlds? What is essential to support life as we know it? Ariel Anbar provides a checklist for finding life on other planets.

Scientists have uncovered the oldest rocks from Earth, and they're shaking up what we knew about Earth's history.