Four rocky inner planets and four gaseous outer planets - makes sense, right? But when astronomers turned their eyes to planets beyond our star system they found out that many systems are set up differently. Why?

Here's a conundrum: the same aerosol pollutants that harm human health also help cool the climate, says atmospheric scientist Sarah J. Doherty. Is there a way to clean up the air without warming the planet? Exploring the unintended...

In this video Paul Andersen explains the parts of the Solar System; including the planets, dwarf planets, moons and asteroids. He explains how everything orbits around the Sun and how a proper understanding of this heliocentric model...

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...

Tag along with Jessi and Squeaks to learn how to make your very own model of the Solar System!

Though we’ve been able detect thousands of exoplanets in the last few decades, we’ve now directly imaged an exoplanet that changes our whole perspective on how we think planets like Jupiter form!

Astronomer Aomawa Shields searches for clues that life might exist elsewhere in the universe by examining the atmospheres of distant exoplanets. When she isn't exploring the heavens, the classically trained actor (and TED Fellow) looks...

From the field to your closet, your clothes go on a long journey before they enter your life. Designer Amy Powney explores the fashion industry's brutal impact on the environment and human health, modeling what ethical, planet-friendly...

Photosynthesis is one of the most important processes on the planet, helping produce the food we eat and the air we breathe. Crop scientist Steve Long thinks it could be more efficient — and he's intent on giving it a boost. He shows how...

Do you find it hard to imagine the vastness of the Solar System? This video shows how to use strings to make a scale model of the distances from the planets to the Sun and helps gain a better understanding of interplanetary distances....

NASA's Transiting Exoplanet Survey Satellite (TESS) has discovered its first Earth-size planet in its star's habitable zone, the range of distances where conditions may be just right to allow the presence of...

Over the years, scientists have made a lot of predictions about how Earth's climate is changing, but they don't just pull those predictions from thin air.

Continuing key observations of the Earth is really important to see how our atmosphere, land and oceans are changing over time. A long-term record, combined with cutting edge observations from the new NASA Earth System...

Life makes our planet an incredibly exotic place compared to the rest of the known universe, says astrobiologist Betül Kaçar, whose research uses statistics and mathematical models to simulate ancient environments and gather insights...

You'd think that two planets with similar stats, orbits, and parent stars would grow up to be pretty similar, but these twins have atmospheres that beg to differ.

Astronomers still aren't sure about how our solar system might have formed, but they have simulations to help them get closer to the answer!

This week on Crash Course: History of the Scientific Revolution—astronomical anomalies accrued. Meanwhile, in Denmark—an eccentric rich dude constructed not one but two science castles! And his humble German assistant synthesized a lot...

A new paper that borrows old astrological data from the Voyager 2 probe has used brand-new computer simulations to find some new weird data about Uranus’s magnetic field. Another paper has new information about our galaxy’s fastest...

Most stars orbit the center of the galaxy. Some stars don't. Learn what scientists think is going on, with Reid Reimers!

The Earth and Moon are like identical twins, made up of the exact same materials -- which is really strange, since no other celestial bodies we know of share this kind of chemical relationship. What's responsible for this special...

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.

Why is the Solar System Flat?

Why is the Solar System Flat?

It's been a long road to the discovery that Earth is not the center of the Solar System, the Milky Way, or the universe; great thinkers from Aristotle to Bruno have grappled with it for millennia. But if we aren't at the center of the...