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PBS Space Time
What If Gravity is Not Quantum?
Season 9
Episode 30
The holy grail of theoretical physics is to come up with a quantum theory of gravity. But after a century of trying we really have no idea how close we are, or it it's even possible. But we shouldn't feel bad because it turns out that the universe is doing everything it its power to make this as difficult as possible. Or it's telling us that it isn't. Should we take the hint?
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16:00
If we want to see quantum weirdness with our eyes, we’ll need Bose-Einstein Condensates.
16:42
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15:51
How can we tell the difference between fermions & bosons? Statistical Mechanics!
13:25
Why has a newly discovered a black hole started pointing directly at us?
15:57
There’s a hard limit to humanity’s expansion in the universe. So, how big can we get?
16:49
Let’s figure out the absolute limit of our future view of the universe!
16:28
Physics is the business of figuring out the structure of the world. So are our brains.
14:28
Nuclei are held together by a quirk of nature, without which there’d be nothing.
16:29
Your motion through the universe is extremely complicated, so let’s figure it out!