In this video Paul Andersen explains the first step in the design process, defining and delimiting the engineering problem. Design requires a clear definition of the problem and this is done by addressing both the constraints and...

Research suggests that nearly every star has at least one planet, but we haven't found any other solar systems that look quite like ours.

The "Mountain or Valley?" illusion makes our brains turn valleys inside out. But inside-out valleys are a real thing, both on Earth and on...

Researchers think a planet-wide groundwater system may have once existed on Mars, and SpaceX launched the very first commercial crew capsule which docked on the International Space Station!

Why do people see the Virgin Mary on a cheese sandwich or hear demonic lyrics in "Stairway to Heaven"? Using video and music, skeptic Michael Shermer shows how we convince ourselves to believe -- and overlook the facts.

Meet some real-life robots, and find out what robots really are, and what they do for us every day!

How can you study Mars without a spaceship? Head to the most Martian place on Earth -- the Atacama Desert in Chile. Astrobiologist Armando Azua-Bustos grew up in this vast, arid landscape and now studies the rare life forms that have...

How can Daenerys Targaryen help us understand personal identity? Find out as Hank continues our exploration of personal identity, learning about Hume’s bundle theory and Parfit’s theory of survival through psychological connectedness.

Stellar astronomer and TED Senior Fellow Lucianne Walkowicz works on NASA's Kepler mission, searching for places in the universe that could support life. So it's worth a listen when she asks us to think carefully about Mars. In this...

Elon Musk thinks that we can make Mars habitable by nuking it. But would that really work?

Mars might be full of salty liquid water! Plus, a guide to the upcoming Lyrids meteor shower.

Hank discusses the challenges involved in manned space travel to Mars, and sends us a message from his 17-year-old self.

SpaceX CEO Elon Musk announced some ambitious plans at the International Aeronautical Congress. If he's right, we could have humans living on the moon and Mars within a decade, and you might never have an 18 hour flight again!

Get to know Olympus Mons on Mars, the biggest volcano in the solar system, and find out why a planet that's smaller than Earth has volcanoes that are bigger than ours!

New research is changing our ideas about the history of Mars's moons and we might have found the most active region of space.

Crashing satellites into the moon can be fun AND educational!

Explore the four gas giant planets, as Jessi and Squeaks take you on a tour of our solar system!

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

The fourth planet from the sun and the outermost of the terrestrial planets, Mars has long been a popular spot for missions and imagination. Phil walks you through the planet's topography, core, and features. We'll take a look back to...

On January 25, 2004, NASA's Opportunity rover landed on Mars! This was the second of NASA's twin Mars Exploration Rovers to land on the red planet. Its counterpart, the Spirit rover, arrived just three weeks earlier. Opportunity is now...

This video is answering the question of what does sunset look like on Mars.

This video is answering the question of how are Mars and the Earth different.

This video is answering the question of can earthquakes only happen on Earth.

Explore the mysteries of "Mars" with our catchy video that makes learning about the Red Planet exciting and fun! Perfect for kids, this tune will spark your imagination and teach you fascinating facts about Mars and its unique features.