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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
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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?

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Season
Extinction by Gamma-Ray Burst
9:48
Find out about the last time and the next time the Earth will be hit by a Gamma-ray Burst.
The Origin of Our First Interstellar Visitor
9:06
We were recently visited by a traveler from outside our solar system: 'Oumuamua.
Understanding the Uncertainty Principle
11:19
Large-scale phenomena can give us incredible insights into the world of quantum mechanics.
Citizen Science
10:02
The future of science is you.
Suicide Space Robots
6:00
Let’s take a moment to remember the selfless sacrifices made by some robotic explorers.
Zero-Point Energy Demystified
9:45
Let’s talk about the mysterious zero-point energy and what it really can and can’t do.
The Vacuum Catastrophe
9:17
If quantum field theory is right about vacuum energy, our universe shouldn't exist.
The Missing Mass Mystery
11:02
Astronomers haven't been able to find up to half of the baryonic matter in the universe.
The Nature of Nothing
11:29
It turns out that "nothing" is one of the most interesting somethings in all of physics.
Absolute Cold
7:04
Can we ever achieve absolute cold?
When Quasars When Quasars Collide STJC
10:22
So what happens when two Super Massive Black Holes collide?
Are the Fundamental Constants Changing?
11:12
Recent findings suggest that the fundamental constants may not be as stable as we assumed.
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