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PBS Space Time

Are Axions Dark Matter?

Season 6 Episode 4

What does the strong nuclear force, the fundamental symmetries of nature, and a laundry detergent have in common? They’re all important parts of the tale of the axion - a tale whose end may take us beyond the standard model and solve one of the most vexing mysteries in astrophysics.

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Season
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We talk about some real experiments that claim to have demonstrated Zeno's phenomenon.
The New Crisis in Cosmology
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The crisis in cosmology has actually gotten worse, which means we may be onto something!
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We explore if there is a true connection between light and gravity.
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We explore that it's the warping of time that causes gravity.
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We try to make contact with dark matter particles and enter into the Dark Universe.
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We delve into some of the most famous paradoxes of special relativity.
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Transitions of quantum systems have always defied observation...until now.
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This is a new type of supernova that can only happen at the end of the universe.
Why Do You Remember The Past But Not The Future?
12:07
Why do we remember the past and not the future?
The Arrow of Time and How to Reverse It
10:36
It's time to begin our journey towards really understanding time.
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