4.4 The Flatness Problem Exercise - World Science U

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4.4 The Flatness Problem Exercise

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4.4 The Flatness Problem Exercise

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1. Question
The predicted value of $\Omega$ is 1. However, until 1998, measurements were showing the value to be approximately 0.2. What was the missing ingredient?
- Gravitational waves
- Quantum fluctuations
- Repulsive gravity
- Dark energy
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