How many universes are there?
Adults SpaceThe 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 SpaceSatellite 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 SpaceStand 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 SpaceAfter 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 SpaceDuring 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.
Chris Hadfield: What I learned from going blind in space
Adults SpaceThere'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.
Astronaut Chris Hadfield and Chef Traci Des Jardins Make a Space Burrito
Adults SpaceKeeping 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.