The 4 Greatest Mysteries of Physics

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There are still some great mysteries of our universe that physicists can't explain. How is that possible? Join us as we break down the 4 greatest mysteries of physics in this episode of SciShow hosted by Michael Aranda!

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Why we need inflation:

Inflation review:
Evidence for inflation
GW detection:
Penrose cyclic cosmology:


Fine-tuning:
Fundamental constants:
Fine-tuning 1:
Fine-tuning 2:
Fine-tuning 3:
Fine-tuning 4:
Fine-tuning 5:
Fine-tuning 6:
Anthropic principle:

Theory of everything:
GUT:
Theory of everything 1:
ToE 2:
Alternatives to string theory:
LQG:
Unification:
Quantum gravity:
Causal Set Theory:
What is String Theory?:


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