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2.11 Peculiar Initial Condition of Our Universe
summary
Open Questions About Our Universe
- Why is the universe so large and old?
- Why is the universe so homogenous and synchronized?
- What is the origin of primordial fluctuations?
Slow-roll Inflation
- The inflationary model says that during an early period, the universe expanded at least 60-fold in a short period of time.
- Gravitational waves might be left over from the hot big bang.
- We need better maps to make a better history of the universe, particularly for the cosmic microwave background.