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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
Can You Trust Your Eyes in Spacetime?
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This week on Spacetime, we take a detour into how geometry works in spacetime.
The Leap Second Explained
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Can a Circle Be a Straight Line?
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General Relativity! Spacetime! And... Curved Lines?
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Southern and northern hemispheres experience opposite seasons... So could it happen?
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Everyone has their own opinion as to whether or not aliens exist.
Is Gravity An Illusion?
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Most of us take gravity as an assumed part of our living realities, but why?
Habitable Exoplanets Debunked!
10:46
Kepler 186f rekindled our hopes and dreams of colonizing space.
The Real Meaning of E=mc²
8:22
Was E=mc² explained to you properly?
9 NASA Technologies Shaping Your Future
6:38
NASA is really good at going to space, but their mission also include lots of public good!
Should the First Mars Mission Be All Women?
7:25
Why might it may be advantageous to have our first mars mission be all women!?
What's the Most Realistic Artificial Gravity in Sci-Fi?
8:29
2001: A Space Odyssey introduced people to the idea of rotation based artificial gravity.
Are Space and Time An Illusion?
7:06
This episode of PBS Space Time is actually about Spacetime.
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