TED Talks
TED: What the discovery of gravitational waves means | Allan Adams
More than a billion years ago, two black holes in a distant galaxy locked into a spiral, falling inexorably toward each other, and collided. "All that energy was pumped into the fabric of time and space itself," says theoretical...
PBS
LIGO's First Detection of Gravitational Waves!
Over 100 years after Einstein proposed his theory of general relativity, we are proud to announce that his final major prediction has been verified! Gravitational waves have officially been detected by LIGO! This is a huge deal and an...
PBS
Singularities Explained
Mathematician Kelsey Houston-Edwards explains exactly what singularities are and how they exist right under our noses.
SciShow
Could Wormholes Really Exist?
If wormholes aren't just convenient plot devices for science fiction writers, they're still much weirder than anything we could make up.
SciShow
Could Naked Singularities Exist?
A naked singularity is something that should be a black hole, but it’s neither black nor a hole. If they exist, they’ll rewrite physics as we know it.
SciShow
Why Do People Say We've Reached the End of Physics?
Our fundamental picture of the universe seems pretty nearly complete these days, to the point that some people are suggesting that we’ve arrived at some version of “the end of physics.” And sure, physics is at a turning point, but it...
PBS
General Relativity & Curved Spacetime Explained!
We've been through the first few episodes of our crash course on general relativity, and came out alive! But it's officially "time" for CURVED spacetime. Join Gabe on this week's episode of PBS Space Time as he discusses Newton and...
SciShow
Could Life Have Survived in Mars's Ancient Lake?
Samples from the Curiosity rover suggest that Mars had a potentially habitable lake in its past, and gravitational lensing has helped scientists weigh a star!
SciShow
Gravitation: The Four Fundamental Forces of Physics #3
Hank continues our series on the four fundamental forces of physics with a description of gravitation -the interaction by which physical bodies attract with a force proportional to that of their masses, and which is responsible for...
SciShow
3 Ways Pi Can Explain Practically Everything
What’s irrational and never ends? Pi! Hank explains how we need pi to explain some of the most basic but most important principles of the universe, in honor of Pi Day.
SciShow
The Tiny Planet Revealing Gravity’s Big Secrets
Mercury’s path through our solar system is, well, a little eccentric, and some of its movements were a mystery astronomers couldn’t explain for a long time. Then, in the early 20th century, Einstein reran the numbers and proved a whole...
SciShow
How SpaceX Launched the World's Most Powerful Rocket
We've found the first evidence of planets outside of the Milky Way, and SpaceX has finally launched the Falcon Heavy rocket into space!
TED-Ed
TED-Ed: Hawking's black hole paradox explained | Fabio Pacucci
Today, one of the biggest paradoxes in the universe threatens to unravel modern science: the black hole information paradox. Every object in the universe is composed of particles with unique quantum properties and even if an object is...
SciShow
How To X-Ray A Black Hole
Black holes are everywhere, including at the center of our galaxy. But because they’re invisible they’re quite difficult to study. Looking at the disks of material surrounding them, however, can give us tons of clues about how they...
Be Smart
Einstein Was Right: Gravitational Waves Edition
A theory of physics 100 years in the making.
PBS
Why the Big Bang Definitely Happened
We pretty much know for sure that the universe was once extremely small, and extremely hot. And we know that something set it in motion, expanding rapidly and continuing to do-so today. But the actual moment of 'the Big Bang' is still a...
SciShow
What If the Large Hadron Collider Made a Black Hole?
Making a black hole in a particle accelerator sounds… a bit dangerous, to say the least, but scientists think that it could be possible! Here's why it probably wouldn't be dangerous -- and might even teach us something.
SciShow
The First Few Moments That Physics Can't Explain
Although science has provided astounding insights into the origins of the universe, we're still not quite sure what happened in those very first few moments.
PBS
Is Gravity An Illusion?
Most of us take gravity as an assumed part of our living realities, but why? Basic physics introduces us to the concept of gravity from a Newtonian sense, but when you start factoring Einstein into an understanding of gravity, things get...
SciShow
Gravitational Waves Discovered!
Einstein predicted their existence 101 years ago, and now it's official: we've detected gravitational waves directly for the first time ever!
TED Talks
TED: Questioning the universe | Stephen Hawking
In keeping with the theme of TED2008, professor Stephen Hawking asks some Big Questions about our universe -- How did the universe begin? How did life begin? Are we alone? -- and discusses how we might go about answering them.
Crash Course
Einstein's Revolution: Crash Course History of Science
There was physics before Einstein in the same way that there was biology before Darwin. Einstein didn’t just add some new ideas to physics. And he didn’t just add a unifying framework for doing physics, like Newton. Einstein took what...
Curated Video
Natural Sciences
Seven eminent physicists, including 3 Nobel Laureates, provide real-world examples of the relevance of TOK (Theory of Knowledge) concepts in their research. This interdisciplinary TOK Sampler explores different aspects of the Natural...
Curated Video
Ignoring the Multiverse
Princeton University physicist Paul Steinhardt describes how many cosmologists simply ignore one of the most pronounced problems with the theory of cosmic inflation.