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What's The Difference Between Asteroids, Comets, And Meteors?

YouthSpaceScienceAstronomy
Asteroids, comets, and meteors: what's the difference?

How Saturn Got Its Rings

YouthSpaceScienceAstronomy
There's evidence to suggest Saturn didn't have its rings when the dinosaurs inhabited Earth, so how did they form?

The Colours Of Stars

KidsScienceNatureAstronomy
Sam the Bat noticed that some stars are different colors, so Mister Brown teaches him about what colors stars can be, and what all the colors mean!

Does Planet 9 Exist?

AdultsHistoryScienceSpace...
A planet has been predicted to orbit the sun with a period of 10,000 years, a mass 5x that of Earth on a highly elliptical and inclined orbit.

We're STILL Not Saying It's Aliens, But Tabby's Star Is Getting Weirder

AdultsScienceSpaceAstronomy
The light from KIC 8462852 faded again, and scientists have some new theories about what's behind astronomy's most mysterious star.

Decoding the ancient astronomy of Stonehenge

AdultsHistoryScienceSpace...
The solstice alignments of Stonehenge, explained.

How to SEE or HEAR the Big Bang

AdultsHistoryPhysicsSpace...
So you know a bit about the Big Bang - but did you know that you can physically see or hear it in your every day life? Find out how 'static' often contains remnants from this monumental event.

What Color is the Universe?

AdultsPhysicsSpaceAstronomy...
When you stare up at the night sky, you might think that the universe is really black, but that's just because our eyes aren't sensitive enough to see the billions and billions of multicolored stars out there. Ever wonder why certain stars are certain colors? And what color is our sun, really? If we looked at enough stars, could we figure out the average color of the universe?

How Many Stars Are There?

AdultsScienceSpaceAstronomy
Counting stars from the shore of the cosmic ocean...

Could We Stop An Asteroid? Feat. Bill Nye

AdultsScienceSportsTechnology...
Could we stop an asteroid on a collision course for Earth?

Solar eclipse: 2015 - Stargazing Live

AdultsScienceSpaceAstronomy...
Miss The Solar Eclipse This Year? Watch This Incredible Footage Of It!

Why Do We Only See One Side of the Moon?

AdultsScienceSpaceAstronomy
Only one side of the Moon is visible from Earth because the Moon rotates about its spin axis at the same rate that the Moon orbits the Earth, a situation known as synchronous rotation or tidal locking.

Why Does February Only Have 28 Days?

AdultsHistoryPoliticsAstronomy
Why does February only get 28 days when all the other months get 30 or 31? The answer is part superstition, part politics, and parts astronomy.

How Big is the Solar System?

AdultsPhysicsScienceSpace...
The true scale of our cosmic neighborhood. Whoa.

An Astronaut's View of Earth

AdultsScienceSpaceWorld...
What it's like to see the Earth from orbit.

How many universes are there?

AdultsScienceSpacePhysics...
The fact that no one knows the answer to this question is what makes it exciting. The story of physics has been one of an ever-expanding understanding of the sheer scale of reality, to the point where physicists are now postulating that there may be far more universes than just our own. Chris Anderson explores the thrilling implications of this idea.

Preparing for #CometLanding

AdultsScienceSpaceTechnology...
After a ten-year journey, Rosetta and Philae had finally reached their destination, Comet 67P/Churyumov-Gerasimenko. Rosetta spent many weeks studying the comet, sending lots of information back to Earth. But where was Philae going to land? Eventually the scientists on Earth found the best place on the comet for Philae to land. Soon it was time to make the final preparations for Philae's great adventure. Both spacecraft couldn't wait any longer. The whole world would be watching as Rosetta and Philae prepared for their biggest challenge yet.