Skip to main content

Up Next

Is Time Travel Impossible?

Is Time Travel Impossible?

Season 5 Episode 37
12:33
Why We Might Be Alone in the Universe

Why We Might Be Alone in the Universe

Season 5 Episode 38
12:24
Does Life Need a Multiverse to Exist?

Does Life Need a Multiverse to Exist?

Season 5 Episode 39
13:09
Can You Observe a Typical Universe?

Can You Observe a Typical Universe?

Season 5 Episode 40
13:36
Is The Universe Finite?

Is The Universe Finite?

Season 5 Episode 41
12:25
The Doomsday Argument

The Doomsday Argument

Season 5 Episode 42
12:50
Do Black Holes Create New Universes?

Do Black Holes Create New Universes?

Season 5 Episode 43
12:24
How To Detect a Neutrino

How To Detect a Neutrino

Season 5 Episode 44
9:54
How To Capture Black Holes

How To Capture Black Holes

Season 5 Episode 45
12:02
What if Singularities DO NOT Exist?

What if Singularities DO NOT Exist?

Season 10 Episode 1
14:44
What Happens If We Nuke Space?

What Happens If We Nuke Space?

Season 10 Episode 2
15:13
Back to Show
PBS Space Time

Loop Quantum Gravity Explained

Season 5 Episode 36

It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything?

Support Provided By
Season
What are the Strings in String Theory?
13:20
How did physicists even come up with String Theory?
Computing a Universe Simulation
12:04
Is it possible to simulate the entire universe on a computer smaller than the universe?
How to Detect Extra Dimensions
11:46
How gravitational waves can be used to search for extra dimensions of space!
Quantum Gravity and the Hardest Problem in Physics
12:20
General relativity and quantum mechanics seem to describe all of observable reality.
How Much Information is in the Universe?
9:28
The universe is full of stuff. But... is it actually made of stuff? Or information?
The Black Hole Entropy Enigma
11:41
Black Holes should have no entropy, but they hold most of the entropy in the universe.
Is There Life on Mars?
13:41
There is no greater hero in our search for life on mars than a robot named Opportunity.
How Will the Universe End?
12:37
In 100 trillion years the era of stars will be over.
Quantum Theory's Most Incredible Prediction
12:36
Do the theories of quantum physics truly represent the underlying workings of reality?
How Close To The Sun Can Humanity Get?
8:51
Humanity is coming closer to touching the Sun after launching the Parker Solar Probe.
Reversing Entropy with Maxwell's Demon
11:36
Can a demon defeat the 2nd Law of Thermodynamics?
The Misunderstood Nature of Entropy
10:58
Entropy is an intriguing and widely misunderstood concept.
Active loading indicator