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PBS Space Time
Does Axionic Dark Matter Bind Galaxies Together?
Season 9
Episode 18
Quantum mechanics is our best theory of the fundamental nature of reality, but it's usually only distinguishable from familiar classical mechanics on the smallest scales. But it’s also possible that our entire galaxy is filled with a reverberating quantum mechanical wave that literally holds the galaxy together—and in fact explains all the dark matter that we see across the universe.
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11:34
If Planck relics are real, then the black holes may just be everywhere.

10:48
Quantum mechanics forbids us from measuring the universe. But we try with this principle.

14:08
We examine all the best-case scenarios for life beyond Earth.

13:11
Einstein gives us a glimmer of hope that time can be warped.

12:35
It may be that for every star in the universe there are billions of black holes.

12:35
Muon G-2 experiment produces the most successful predictions in physics.

12:48
We talk about some real experiments that claim to have demonstrated Zeno's phenomenon.

13:08
The crisis in cosmology has actually gotten worse, which means we may be onto something!

13:24
We explore if there is a true connection between light and gravity.

8:55
We explore that it's the warping of time that causes gravity.

13:54
There's a galaxy-spanning gravitational wave detector that has provided a breakthrough.

13:03
We try to make contact with dark matter particles and enter into the Dark Universe.