So you know what a star is, right? Well, if you don't, you should. We've talked about that big one in the sky a few times: The Sun! But there are a lot of bright dots in the night sky and not all of them are stars. Today, let's play a...

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...

Researchers have found the origin of anxiety in the hippocampus of mice. This has far-reaching effects on how we look at and treat anxiety in humans. Neuroscientists at Columbia University Medical Center and University of California San...

Who's will be the tallest???

An explanation and model illustrating that differences in the apparent brightness of the sun compared to other stars are due to their relative distances from the Earth. Using the power of storytelling and cutting-edge technology this...

While Jupiter is nowhere near massive enough to initiate fusion in its core, there are even more massive objects out there that fall just short of that achievement as well called brown dwarfs. Brown dwarfs, have a mass that places them...

Tidally locked planets could be more common than Earth-like planets! And these 'eyeball planets' might even be a promising place to look for unique lifeforms!

We have new insights into the bizarre nature of lava planets, and the icy moon Europa may yet reveal some of her salty secrets.

Saturn, the second largest planet in our solar system, captivates observers with its many rings made mostly of ice. Saturn's largest moon, Titan, holds a thick atmosphere and intriguing landscapes, making it a potential target for future...

Why is the universe organized the way it is? And why is it so empty? From planets and stars to superclusters and galactic filaments, the universe's largest structures formed because of its smallest. In this special collaboration with PHD...

In this episode, welcome in Matt O'Dowd as the new host to rigorously take you through the mysteries of space, time, and the nature of reality. We're starting off this new season with perhaps one of the most mysterious things of all -...

Protons make up most of the regular matter int he universe, but we're still figuring out a few of their quirks... Or quarks. Join Hank Green and learn why protons are still so mysterious to scientists, and what we've discovered about...

Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of clusters, though. Open clusters contain hundreds or thousands of stars held...

As the child of Holocaust survivors and a World War II refugee herself, peace builder Georgette Bennett was stunned by the human toll and tragedy of the Syrian civil war. She got to work, bringing together historical enemies to build an...

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...

This video explores a pivotal moment in Act 5, Scene 3 of Shakespeare's "Romeo and Juliet," focusing on Prince Escalus's lines which reveal the tragic consequences of the feud between the Capulets and Montagues. The viewer will gain...

Let's watch the video to review all the vocabulary about the planets and the Solar System.

This program investigates a very important star - our sun. The key features of our sun, as well as other stars are explored. Special attention is also given to other things in space such as asteroids and comets.

This video is answering the question of how big is Canada.

This video explains the investment appraisal measure of payback periods and how to evaluate it. The video discusses the limitations of payback periods and how they can emphasize the timing of cash flows, rather than the profitability of...

Dedicated instances are the final "special" kind of AWS EC2 instance. This video explains their operation.

Student inverviews from AP Boot Camp at San Pasqual High School in Escondido, CA.

What makes a planet a planet? And what makes a star a star? Once we know this these defining characteristics, we start to notice that these definitions can overlap. Which begs the question, can a planet be bigger than its parent star?

What makes a planet a planet? And what makes a star a star? Once we know this these defining characteristics, we start to notice that these definitions can overlap. Which begs the question, can a planet be bigger than its parent star?