| 1 |
Was there a beginning of time? (Part 1)
- Hubble's law and the big bang
- The cosmic microwave background
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| 2 |
Was there a beginning of time? (Part 2)
- The Friedmann universe
- Beyond the big bang
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| 3 |
Are there parallel universes?
- The level I multiverse
- The level II multiverse
- The level III multiverse
- The level IV multiverse
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| 4 |
Do aliens exist?
- Where are they?
- They're here!
- They exist but haven't communicated yet.
- We are alone.
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| 5 |
Is time travel possible?
- Special relativity
- General relativity
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| 6 |
Towards a theory of everything
- A brief history of physics
- Quantum gravity
- String theory
- Alternatives to string theory
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| 7 |
Musings on the theory of everything and reality
- Types of existence
- Mathematical universe hypothesis
- Appendix: Occam's razor
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| 8 |
The nature of reality
- The mathematical universe hypothesis
- The level IV multiverse (cont.)
- The simulation argument
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