Season 4

Recent surveys draw scientific conclusions about the persistent absence of aliens.
Will We Ever Find Alien Life?

What are the Strings in String Theory?
How did physicists even come up with String Theory?
What are the Strings in String Theory?

Computing a Universe Simulation
Is it possible to simulate the entire universe on a computer smaller than the universe?
Computing a Universe Simulation

How to Detect Extra Dimensions
How gravitational waves can be used to search for extra dimensions of space!
How to Detect Extra Dimensions

Quantum Gravity and the Hardest Problem in Physics
General relativity and quantum mechanics seem to describe all of observable reality.
Quantum Gravity and the Hardest Problem in Physics

How Much Information is in the Universe?
The universe is full of stuff. But... is it actually made of stuff? Or information?
How Much Information is in the Universe?

Black Holes should have no entropy, but they hold most of the entropy in the universe.
The Black Hole Entropy Enigma

Quantum Theory's Most Incredible Prediction
Do the theories of quantum physics truly represent the underlying workings of reality?
Quantum Theory's Most Incredible Prediction

How Close To The Sun Can Humanity Get?
Humanity is coming closer to touching the Sun after launching the Parker Solar Probe.
How Close To The Sun Can Humanity Get?

Reversing Entropy with Maxwell's Demon
Can a demon defeat the 2nd Law of Thermodynamics?
Reversing Entropy with Maxwell's Demon

The Misunderstood Nature of Entropy
Entropy is an intriguing and widely misunderstood concept.
The Misunderstood Nature of Entropy

Quantum Invariance & The Origin of The Standard Model
Learn about the standard model of particle physics, the most accurate physical theory yet.
Quantum Invariance & The Origin of The Standard Model

Will A New Neutrino Change The Standard Model?
One paper reports on a new particle outside the standard model: the sterile neutrino.
Will A New Neutrino Change The Standard Model?

How Asteroid Mining Will Save Earth
Forget oil. There’s another natural resource that’s never been touched, Asteroids.
How Asteroid Mining Will Save Earth

The Black Hole Information Paradox
Nothing can escape from below the event horizon- not matter, light, or even information.
The Black Hole Information Paradox

What Survives Inside A Black Hole?
Nothing can escape from below the event horizon- not matter, light, or even information.
What Survives Inside A Black Hole?

Why Quantum Information is Never Destroyed
Is the entire history of the universe perfectly knowable? Or has information been lost?
Why Quantum Information is Never Destroyed

Noether's Theorem and The Symmetries of Reality
Flawed conservation laws are consequences of a much deeper principle: Noether’s theorem.
Noether's Theorem and The Symmetries of Reality

How Gaia Changed Astronomy Forever
New Gaia mission data has dramatically changed how we understand our own galaxy.
How Gaia Changed Astronomy Forever

We can now see that the Milky Way is swarming with tens of thousands of black holes.
Black Hole Swarms

Using Stars to See Gravitational Waves
We’re going to need a gravitational wave observatory - in fact, we've already built one.
Using Stars to See Gravitational Waves
Support for PBS.org provided by: