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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
The Unruh Effect
10:52
A black hole can never catch up to you, but the Unruh radiation it generates sure can.
The Andromeda-Milky Way Collision
9:15
The Andromeda galaxy will inevitably collide with our own Milky Way. Will that be the end?
Scientists Have Detected the First Stars
9:03
What do the first stars, dark matter, and superior siege engines have in common?
Hawking Radiation
12:00
Stephen Hawking's most famous prediction: the theory of Hawking Radiation.
Should Space be Privatized?
9:16
Will the future of space exploration be guided by public or private entities?
The Trebuchet Challenge
8:25
Do you have what it takes to calculate the awesome power of the trebuchet?
The Death of the Sun
9:01
What exactly will happen when the sun dies?
What is Energy?
11:20
Energy is the most powerful and useful concept in all of physics, but what exactly is it?
Kronos: Devourer Of Worlds
7:42
What happens when a star eats its planets? Find out on today’s Space Time Journal Club.
The End of the Habitable Zone
9:55
The Sun is getting brighter and the habitable planets in our solar system are changing.
Horizon Radiation
12:03
What is Horizon radiation? How does it apply to the Unruh Effect and Hawking Radiation?
What Do Stars Sound Like?
9:14
We can now map the interiors of stars by “listening” to their seismic wave harmonies.
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