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# Contents

- Introduction
- Learning outcomes
- 1 Cosmology today
  - 1.1 The expanding Universe
  - 1.2 The cooling Universe
  - 1.3 Matter in the Universe
- 2 Is modern cosmology fundamentally wrong?
- 3 The nature of dark matter
- 4 The nature of dark energy
  - 4.1 A cosmological constant
  - 4.2 Quintessence models
  - 4.3 Modified gravity
- 5 Inflation
  - 5.1 Horizon problem
  - 5.2 Flatness problem
  - 5.3 Monopole problem
  - 5.4 Inflationary theories and how to study them
- 6 Conclusion
- 7 Quiz
- References
- Acknowledgements
- Glossary

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