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PBS Space Time

Loop Quantum Gravity Explained

Season 5 Episode 36 | 13m 49s

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?

Aired: 10/14/19
Extras
Watch • 17:23
PBS Space Time
How Astrophysics Can Literally Save the World
How is it possible to tell if a space rock will one day collide with the Earth?
Episode: S10 E37 | 17:23
Watch • 15:58
PBS Space Time
Your DNA's Codes Are (Probably) From Outer Space
Did you know that many of us have up to 4% neanderthal DNA?
Episode: S10 E36 | 15:58
Watch • 16:35
PBS Space Time
Will The Big Bang Happen Again (and Again)?
What if the Big Bang was just an endless cycle?
Episode: S10 E35 | 16:35
Watch • 19:39
PBS Space Time
The Final Barrier to (Nearly) Infinite Energy
Why are billions suddenly being pumped into fusion startups?
Episode: S10 E34 | 19:39
Watch • 16:36
PBS Space Time
The Crisis in Physics: Why the Higgs Boson Should Not Exist!
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
Episode: S10 E33 | 16:36
Watch • 14:30
PBS Space Time
Does Timescapes Disprove Dark Energy?
Maybe dark energy doesn't exist?
Episode: S10 E32 | 14:30
Watch • 18:32
PBS Space Time
How Many Black Holes Are In The Solar System?
Dark matter has eluded us for many decades but we may be able to discover more now.
Episode: S10 E31 | 18:32
Watch • 15:35
PBS Space Time
Does Infinity - Infinity = an Electron
What do you get if you combine something that’s infinitely massive and negative infinitely massive?
Episode: S10 E30 | 15:35
Watch • 13:39
PBS Space Time
What Does An Electron Actually Look Like?
What does an electron really look like?
Episode: S10 E29 | 13:39
Watch • 16:35
PBS Space Time
The NEW Ultimate Energy Limit of the Universe
Is there a limit to how much energy you can cram into, or pull out of one patch of space?
Episode: S10 E28 | 16:35
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Watch • 17:23
PBS Space Time
How Astrophysics Can Literally Save the World
How is it possible to tell if a space rock will one day collide with the Earth?
Episode: S10 E37 | 17:23
Watch • 15:58
PBS Space Time
Your DNA's Codes Are (Probably) From Outer Space
Did you know that many of us have up to 4% neanderthal DNA?
Episode: S10 E36 | 15:58
Watch • 16:35
PBS Space Time
Will The Big Bang Happen Again (and Again)?
What if the Big Bang was just an endless cycle?
Episode: S10 E35 | 16:35
Watch • 19:39
PBS Space Time
The Final Barrier to (Nearly) Infinite Energy
Why are billions suddenly being pumped into fusion startups?
Episode: S10 E34 | 19:39
Watch • 16:36
PBS Space Time
The Crisis in Physics: Why the Higgs Boson Should Not Exist!
The universe should've collapsed after the Big Bang, but a light Higgs boson let us exist.
Episode: S10 E33 | 16:36
Watch • 14:30
PBS Space Time
Does Timescapes Disprove Dark Energy?
Maybe dark energy doesn't exist?
Episode: S10 E32 | 14:30
Watch • 18:32
PBS Space Time
How Many Black Holes Are In The Solar System?
Dark matter has eluded us for many decades but we may be able to discover more now.
Episode: S10 E31 | 18:32
Watch • 15:35
PBS Space Time
Does Infinity - Infinity = an Electron
What do you get if you combine something that’s infinitely massive and negative infinitely massive?
Episode: S10 E30 | 15:35
Watch • 13:39
PBS Space Time
What Does An Electron Actually Look Like?
What does an electron really look like?
Episode: S10 E29 | 13:39
Watch • 16:35
PBS Space Time
The NEW Ultimate Energy Limit of the Universe
Is there a limit to how much energy you can cram into, or pull out of one patch of space?
Episode: S10 E28 | 16:35