In 1990, an experiment conceived by Carl Sagan was performed using using the Galileo spacecraft. The purpose? To detect life on a planet based on measurements by a space probe. The experiment was successful, and abundant life was...

"If you live in the northern hemisphere, there's a decent chance you're in a winter wonderland right now. Settle in with a hot drink for this winter compilation and learn about some of the interesting things that make winter wondrous!

If you've ever gone outside really early on a cold day in fall, you might have seen a thin layer of sparkly ice crystals covering everything! That ice is called frost, and it can only form if the weather is exactly...

Our planet is full of beautiful places, but it’s also full of wonderfully weird places. We've put together some of our favorite episodes about our planet’s weirdest lakes!

Last week, the recipients of the 2017 Nobel Prizes were announced. We take a closer look at the winners of the Physiology and Chemistry Awards, whose breakthroughs change the way we study sleep, and allow us to look at microscopic...

In addition to just being beautiful one-of-a-kind panoramas in the sky, clouds can tell us so much about how energy and weather patterns flow around the globe. Today, we'll talk about how clouds form, the three main types (cirrus,...

Kirk Sorensen shows us the liquid fuel thorium reactor -- a way to produce energy that is safer, cleaner and more efficient than current nuclear power.

Scientists have discovered an underground lake of liquid water on Mars! While this isn’t itself evidence for life on Mars, it does raise some new possibilities.

NASA's Dragonfly -- a robotic rotorcraft-lander that's designed to hop across the surface of an extraterrestrial body -- is set to voyage deep into the solar system to explore Titan, Saturn's largest moon, in 2026. Planetary scientist...

Have you ever wondered if aliens exist? You're not alone! Learn about what alien life needs to survive in the universe!

There are exoplanets out there that seem very Earth-like, but if you look out and see liquid metal instead of liquid water, you might be in the Venus zone.

The source of earth's water is something of a mystery, and some scientists are starting to think that the sun might have provided the special ingredients to help.

Hank talks about astrobiology - the study of and search for life in the universe off Earth. Right now, the field has more questions than answers, but all they all seek to answer that one fundamental query: are we alone in the universe?

Winning an alpine skiing race can come down to a tiny margin, so the skiers have to make sure they prepare their skis just right!

Did you know SciShow has a whole channel dedicated solely to space? Well, we hope you packed warm, cause we’re taking you on a tour through the solar system with these SciShow Space episodes!

The rumors are true! There's an Earth-like planet orbiting our neighboring star!

Caitlin Hofmeister gives you the latest news from around the universe, including Kepler's latest exoplanet discovery, an upcoming solar eclipse, and a breathtaking image from Hubble.

Join Jessi and Squeaks in their brand new fort as they answer letters from their friends in Ivydale, England!

Exoplanets are being discovered in the habitable zone to sustain life as we know it. Could water be found on the closest exoplanet to us?

Venus is too hot, Mars is too cold, and Earth is just right, says planetary scientist Dave Brain. But why? In this pleasantly humorous talk, Brain explores the fascinating science behind what it takes for a planet to host life -- and why...

Scientists have taken a look at the underground lake found on Mars in 2018, and it might not be the only one! Plus, new clues might help us understand why the Sun’s atmosphere is so much hotter than the surface!

The Hubble Telescope found more evidence of vast plumes of water bursting through the icy surface of Jupiter's moon Europa. What does this tell us about the potential for life on Europa?

Between the new, potentially Earth-like planets, organic molecules on Ceres, and SpaceX's successful launch, it's been quite a week in space!

Today Emily Graslie of The Brain Scoop gives us the news about a couple of near- misses for our planet and an update on where astronomers think habitable life might be found in other star systems.