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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 Many Universes Are There?
14:03
The universe is big, but it’s peanuts compared to the eternally inflating multiverse
Is Pluto a Planet?
14:03
You know what a planet is, right? A big round thing that orbits a star. Uh, not so fast.
Could We Terraform Mars?
15:33
Could we terraform Mars?
Is Earth's Magnetic Field Reversing?
12:46
Is Earth's Magnetic Field Reversing?
How To Become an Astrophysicist
12:45
Are you thinking about becoming (or ever just wondered how one becomes) an Astrophysicist?
What Happened Before the Big Bang?
10:23
We actually have a pretty good idea of what might have happened before the Big Bang.
What Caused the Big Bang?
13:12
What Caused the Big Bang?
Did Time Start at the Big Bang?
12:30
Did Time Start at the Big Bang?
The Quantum Internet
11:35
The Quantum Internet
Thorium and the Future of Nuclear Energy
16:05
Thorium and the Future of Nuclear Energy
How Black Holes Kill Galaxies
11:20
It turns out black holes may be responsible for ending star formation across the galaxy.
The Alchemy of Neutron Star Collisions
11:24
Many heavy elements were produced in a spectacular event: the collision of neutron stars.
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