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Why Do We Only See One Side of the Moon?

Adults Space
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.

Dark matter: The matter we can't see

Adults Space
The Greeks had a simple and elegant formula for the universe: just earth, fire, wind, and water. Turns out there's more to it than that -- a lot more. Visible matter (and that goes beyond the four Greek elements) comprises only 4% of the universe. CERN scientist James Gillies tells us what accounts for the remaining 96% (dark matter and dark energy) and how we might go about detecting it.

How Big is the Solar System?

Adults Space
The true scale of our cosmic neighborhood. Whoa.

The Far Future of the Universe

Adults Space
This episode was a part of a collaboration with several other PBS Digital Studios shows, all talking about the future!!

An Astronaut's View of Earth

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

How folding paper can get you to the moon - Adrian Paenza

Adults Space
Can folding a piece of paper 45 times get you to the moon? By seeing what happens when folding just one piece of paper, we see the unbelievable potential of exponential growth. This lesson will leave you wanting to grab a piece of paper to see how many times you can fold it!

How many universes are there?

Adults Space
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.

Will Marshall: Tiny satellites show us the Earth as it changes in near-real-time

Adults Space
Satellite imaging has revolutionized our knowledge of the Earth, with detailed images of nearly every street corner readily available online. But Planet Labs' Will Marshall says we can do better and go faster - by getting smaller. He introduces his tiny satellites - no bigger than 10 by 10 by 30 centimeters - that, when launched in a cluster, provide high-res images of the entire planet, updated daily.

Why can't we see evidence of alien life?

Adults Space
Stand by for an animated exploration of the famous Fermi Paradox. Given the vast number of planets in the universe, many much older than Earth, why haven't we yet seen obvious signs of alien life? The potential answers to this question are numerous and intriguing, alarming and hopeful.

Preparing for #CometLanding

Adults Space
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.

Astronauts Grow a Water Bubble in Space

Adults Space
During Expedition 40 in the summer of 2014, NASA astronauts Steve Swanson and Reid Wiseman - along with European Space Agency astronaut Alexander Gerst - explored the phenomenon of water surface tension in microgravity on the International Space Station. The crew "submerged" a sealed GoPro camera into a floating ball of water the size of a softball and recorded the activity with a 3-D camera.

Ambition - An Amazing Short Fusion Film Of Science Fiction With Science Fact

Adults Space
Ambition is a collaboration between Platige Image and ESA. Directed by Tomek Bagi?ski and starring Aiden Gillen and Aisling Franciosi, Ambition was shot on location in Iceland, and screened on 24 October 2014 during the British Film Institute's celebration of Sci-Fi: Days of Fear and Wonder, at the Southbank, London.

Orion: Trial By Fire

Adults Space
Orion will be launching into space for the first time in December 2014. It can take astronauts to asteroid or even onto Mars.

Questions no one knows the answers to

Adults Space
In the first of a new TED-Ed series designed to catalyze curiosity, TED Curator Chris Anderson shares his boyhood obsession with quirky questions that seem to have no answers.

Chris Hadfield: What I learned from going blind in space

Adults Space
There's an astronaut saying: In space, "there is no problem so bad that you can't make it worse." So how do you deal with the complexity, the sheer pressure, of dealing with dangerous and scary situations? Retired colonel Chris Hadfield paints a vivid portrait of how to be prepared for the worst in space (and life) -- and it starts with walking into a spider's web. Watch for a special space-y performance.

All Alone in the Night

Adults Space
All Alone in the Night - Time-lapse footage of the Earth as seen from the ISS

Astronaut Chris Hadfield and Chef Traci Des Jardins Make a Space Burrito

Adults Space
Keeping in mind the challenge of mixing food ingredients in micro-gravity, chef Traci Des Jardins concocts a recipe for spicing up astronaut Chris Hadfield's meals on board the International Space Station. Commander Hadfield also shares with Jamie and Adam the foods he misses most after spending six months in space.

Space Oddity - Chris Hadfield performs onboard ISS with Larrivee Parlor

Adults Space
International Space Station Commander, Chris Hadfield, performs a revised version of David Bowies Space Oddity. Seen in this video is the Larrivee Parlor guitar that has found it's home on the ISS for the last decade. Chris has used this Parlor, the first acoustic guitar in space, to write and record the first musical recordings in space. Here at Larrivee we refer to Chris as "The Space Cowboy".

Sleeping in Space

Adults Space
It's bedtime on the ISS. CSA Astronaut Chris Hadfield shows us how astronauts sleep in space.

Wringing a wet washcloth in space

Adults Space
International Space Station commander Chris Hadfield soaks a washcloth, gives it a twist, and...well, you'll see.

Escaping Earth with Morgan Freeman

Adults Space
An intergalactic space voyage narrated by the smoothest voice on planet Earth.