The 4 Greatest Mysteries of Physics

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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https://www.space.com/25075-cosmic-in...
Why we need inflation: https://www.space.com/42202-why-we-ne...
https://www.space.com/42261-how-did-i...
Inflation review: https://arxiv.org/pdf/hep-ph/0304257.pdf
Evidence for inflation https://www.forbes.com/sites/startswi...
GW detection: https://iopscience.iop.org/article/10...
Penrose cyclic cosmology: https://aip.scitation.org/doi/abs/10....
https://physicsworld.com/a/new-eviden...

Fine-tuning:
Fundamental constants: https://www.forbes.com/sites/ethansie...
Fine-tuning 1: https://www.symmetrymagazine.org/arti...
Fine-tuning 2: https://www.pbs.org/wgbh/nova/article...
Fine-tuning 3: https://www.forbes.com/sites/startswi...
Fine-tuning 4: https://plato.stanford.edu/entries/fi...
Fine-tuning 5: https://books.google.co.uk/books/abou...
Fine-tuning 6: https://www.cambridge.org/core/journa...
Anthropic principle: https://www.britannica.com/science/an...

Theory of everything: https://www.quora.com/What-are-the-Gr...
GUT: http://nautil.us/issue/46/balance/a-b...
Theory of everything 1: https://www.forbes.com/sites/startswi...
ToE 2: https://www.space.com/theory-of-every...
Alternatives to string theory: https://www.forbes.com/sites/startswi...
LQG: https://arxiv.org/abs/0711.0146
Unification: https://www.pdcnet.org/jphil/content/...
Quantum gravity: https://arxiv.org/abs/gr-qc/0108040
Causal Set Theory: https://arxiv.org/abs/1903.11544
What is String Theory?: https://math.berkeley.edu/~kwray/pape...


Image Sources:
https://www.istockphoto.com/photo/sta...
https://www.istockphoto.com/photo/lar...

https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://en.wikipedia.org/wiki/File:Ca...
https://commons.wikimedia.org/wiki/Fi...
https://commons.wikimedia.org/wiki/Fi...
https://svs.gsfc.nasa.gov/10137
https://en.wikipedia.org/wiki/File:CM...
https://en.wikipedia.org/wiki/File:Pl...
https://imagine.gsfc.nasa.gov/educato...
https://www.istockphoto.com/
https://www.storyblocks.com/

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