PBS
How Does Gravity Escape A Black Hole?
Fact: in a black hole, all of the mass is concentrated at the singularity at the very center. Fact: every black hole singularity is surrounded by an event horizon. Nothing can escape from within the event horizon unless it can travel...
PBS
How To Build The Universe in a Computer
We routinely simulate the universe on all of its scales, from planets to large fractions of the cosmos. Today we’re going to see how it’s possible to build a universe in a computer - and see whether there’s a limit to what we can simulate.
PBS
How To Simulate The Universe With DFT
If you used every particle in the observable universe to do a full quantum simulation, how big would that simulation be? At best a large molecule. That’s how insanely information dense the quantum wavefunction really is. And yet we...
PBS
What Happens If A Black Hole Hits Earth?
The possibility that a black hole could actually impact Earth may seem straight out of science fiction, but the reality is that microscopic primordial black holes could actually hit Earth. If one did, it wouldn't just impact like an...
PBS
New Results in Quantum Tunneling vs. The Speed of Light
Paradoxically, the most promising prospects for moving matter around faster than light may be to put a metaphorical brick wall in its way. New efforts in quantum tunneling - both theory and experiment - show that superluminal motion may...
PBS
Why Magnetic Monopoles SHOULD Exist
What happens if you cut a bar magnetic in half? We get two magnets, each with their own North and South poles. But what happens if you keep on cutting, into fourths and eighths and sixteenths and so on? Will we ever get to a single pole?...
PBS
The NEW Crisis in Cosmology
I have good news and bad news. Bad news first: two years ago we reported on the Crisis in Cosmology. Since then, it’s only gotten worse. And actually, the good news is also that the crisis in cosmology has actually gotten worse, which...
PBS
Navigating with Quantum Entanglement
We often think of quantum mechanics as only affecting only the smallest scales of reality, with classical reality taking over at some intermediate level. But in his 1944 book, What is Life?, the quantum physicist Erwin Schrödinger...
PBS
The Supernova At The End of Time
Good news everyone: it looks like the universe is going to end with a series of catastrophic explosions. The very, very long story short is that the universe ends in heat death, as it approaches maximum entropy, and its eternal...
PBS
Dissolving an Event Horizon
Black hole singularities break physics - fortunately, the universe seems to conspire to protect itself from their causality-destroying madness. At least, so says the cosmic censorship hypothesis. Only problem is many physicists think it...
PBS
Does Quantum Immortality Save Schrödinger's Cat?
To quote eminent scientist Tyler Durden: "On a long enough timeline, the survival rate for everyone drops to zero." Actually… not necessarily true. If the quantum multiverse is real there may be a version of you that lives forever. If we...
PBS
Are Axions Dark Matter?
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PBS
Solving the Three Body Problem
PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign up for the mailing list to get episode notifications and hear special announcements!...
PBS
How To Capture Black Holes
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PBS
Why We Might Be Alone in the Universe
Why does it appear, that humanity is the lone intelligence in the universe? The answer might be that planet Earth is more unique than we've previously assumed. The rare earth hypothesis posits exactly this - that a range of factors made...
PBS
How Many States Of Matter Are There?
Let’s talk about states of matter. You know your states of matter don’t you? We have solids, liquids and gasses, and plasmas, quark-gluon plasmas, nuclear matter, bose-einstein condensates, neutronium, time crystals, and sand. Come to...
TED Talks
TED: How I found myself -- by impersonating other people | Melissa Villaseñor
Ever think you'd hear Sandra Bullock, Britney Spears and Dolly Parton in one TED Talk? Here they are, courtesy of "Saturday Night Live" star Melissa Villaseñor. She shares the life lessons of a comedian -- complete with celebrity...
TED Talks
TED: The power of an image -- and the mind behind it | Misan Harriman
As a neurodivergent child going to school far from home, Misan Harriman found solace in the internet -- "an endless library of the extraordinary," as he calls it. In this powerful talk, he shares his journey as a self-taught photographer...
TED Talks
TED: How to solve the world's biggest problems | Natalie Cargill
Sometimes the world's biggest issues can seem so intractable that meaningful change feels impossible. But what if the answer has been right in front of us all along? What if the answer is actually throwing money at the problems? In this...
TED Talks
TED: The "adjacent possible" -- and how it explains human innovation | Stuart Kauffman
From the astonishing evolutionary advances of the Cambrian explosion to our present-day computing revolution, the trend of dramatic growth after periods of stability can be explained through the theory of the "adjacent possible," says...
TED Talks
TED: Why I built my own time machine | Lucas Rizzotto
Experiential artist Lucas Rizzotto was going through a tough breakup, so he did what anyone would do: he built a personal time machine. In a playful talk, he shares how his free-ranging experimentation led to various delightful,...
TED Talks
TED: Why change is so scary -- and how to unlock its potential | Maya Shankar
Unexpected change like an accident, an illness or a relationship that suddenly ends is inevitable -- and disorienting. With a heartfelt and optimistic take on life's curveballs, cognitive scientist Maya Shankar shares how these...
TED-Ed
TED-Ed: Why is it so hard to break a bad habit? | TED-Ed
Many people deal with a nail-biting habit at some point in their lives. Some will go to great lengths to try to stop, employing strategies like dipping their hands in salt or wearing gloves. And while not all of us are nail-biters, most...
TED-Ed
TED-Ed: One of history's most dangerous myths | Anneliese Mehnert
From the 1650s through the late 1800's, European colonists descended on South Africa. They sought to claim the region, becoming even more aggressive after discovering the area's abundant natural resources. To support their claims to the...