Astronomers have finally observed what causes pulsating auroras, and our estimates of the mass of the Andromeda Galaxy have shrunk.

Theoretical physicist David Deutsch delivers a mind-bending meditation on the "great monotony" -- the idea that nothing novel has appeared in the universe for billions of years -- and shows how humanity's capacity to create explanatory...

Some of the universe's biggest action is a result of its smallest stuff

The border between our physical world and the digital information surrounding us has been getting thinner and thinner. Designer and engineer Jinha Lee wants to dissolve it altogether. As he demonstrates in this short, gasp-inducing talk,...

A skyscraper that channels the breeze ... a building that creates community around a hearth ... Jeanne Gang uses architecture to build relationships. In this engaging tour of her work, Gang invites us into buildings large and small, from...

SciShow Space News gives you the latest from a batch of experiments on the Space Station, a new mission to forecast space weather, and a guide to this year's conjunction of Mars and Venus!

This week SpaceX accomplished a first in the history of spaceflight: They reused a rocket big enough to send things into orbit!

SciShow Space News reveals two weird experiments in human spaceflight: one showed us what it really feels like to walk on the moon, the other put ordinary people through space flight simulation to see how they did. Find out inside!

Can you make a black hole out of light? Learn about the strange theoretical object called the 'Kugelblitz'.

How often do you see the true beauty of the night sky? TED Fellow Lucianne Walkowicz shows how light pollution is ruining the extraordinary -- and often ignored -- experience of seeing directly into space.

Our lives depend on curbing climate change, but so many priorities seem to be in competition. What's the most urgent thing humanity can do right now? Social entrepreneur James Irungu Mwangi tells us why Africa could be the ideal home for...

Hank gives us an inclusive overview of how everything in the universe is thought to have begun, and how cosmologists predict it will all come to an end. Now get happy!

There’s no question that comets have been regarded as some of the most beautiful things in the night sky for thousands of years. But why are their heads often green but never their tails?

How can we be so sure of the way celestial bodies behave when they're so far away? With the help of some speakers, garbage cans, and springs of course.

explore a speculative digital world without screens in this fanciful demo, a mix of near reality and far-future possibility. Wearing the HoloLens headset, Alex Kipman demos his vision for bringing 3D holograms into the real world,...

SciShow Space takes you on a tour of Mercury, the sun's closest friend, where a year is just a day and half long, and the surface holds many surprises -- like ice!

SciShow Space reveals the discovery of a whole new kind of supernova, and the undead stars they leave behind.

Several companies are already working on plans to mine space objects, but who owns what in space?

What happens when you send a duck, a rooster and a sheep with monkeys and dogs into space? Scientists had to find out -- and for decades, they've been studying life in space with the help of some crawly, wiggly, fluttery, furry friends.

Scientists have thought for awhile that pulsars could be used as a sort of galactic positioning system, and astronomers have published the most advanced topographical map of Titan to date!

According to a new model, days on Earth used to really fly by, and today Pluto has wind-swept dunes made of very weird sand.

Finding a red nugget galaxy is like discovering a time capsule from the early universe.

Roughly 85 percent of mass in the universe is "dark matter" -- mysterious material that can't be directly observed but has an immense influence on the cosmos. What exactly is this strange stuff, and what does it have to do with our...

23 Reasons Science Gave Us to be Cheerful