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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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12:32
We delve into some of the most famous paradoxes of special relativity.

12:43
Transitions of quantum systems have always defied observation...until now.

12:11
Erwin Schrödinger provides a new perspective that helps us navigate quantum mechanics.

12:12
This is a new type of supernova that can only happen at the end of the universe.

12:07
Why do we remember the past and not the future?

10:36
It's time to begin our journey towards really understanding time.

13:42
Space Time weigh in on physics and free will.

13:48
We explore how forces of nature, once unified, were forced to separate.

12:50
This is how the Penrose Singularity Theorem Predicts The End of Space Time.

12:39
if time is connected to space does that mean that the future is predestined?

13:09
We explore what exists in the past, present and future.

13:01
We may have detected the signature of alien life - Venusian life -for the first time.