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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
How We Know The Universe is Ancient
14:01
How do you learn the age of the universe when there’s no trace left of its beginnings?
Will Wormholes Allow Fast Interstellar Travel?
14:31
When do we get to wormhole ourselves out of here?
Was the Milky Way a Quasar?
13:31
Recently we discovered that its violent past was much more recent than we thought.
How We Know The Earth Is Ancient
13:38
How can we be sure about timescales so far beyond the capacity for human intuition?
What’s On The Other Side Of A Black Hole?
11:54
Normal maps are useless inside black holes.
How Black Holes Spin Space Time
12:49
If there’s one thing cooler than a black hole it’s a rotating black hole.
How Do Quantum States Manifest In The Classical World?
14:42
How do quantum states manifest in the classical world?
Does Quantum Immortality Save Schrödinger's Cat?
11:31
If the quantum multiverse is real there may be a version of you that lives forever.
How Decoherence Splits The Quantum Multiverse
15:09
Does conscious observation of a quantum system cause the wavefunction to collapse?
Does Consciousness Influence Quantum Mechanics?
13:17
There is an idea that consciousness can directly influence quantum systems.
Are Axions Dark Matter?
12:09
The axion may explain dark matter.
Are There Infinite Versions of You?
12:22
If the universe goes on forever, does that mean there are infinite versions of you?
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