Birth of the Universe

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Two Cosmological Facts:

Early Universe: At t<300,000 years, electrons and nuclei are are not bound together in atoms. Light scatters from free electrons.

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What is the geometry of the Universe?

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Where did large-scale structure (e.g., galaxies, clusters, larger-scale clustering) come from?

Where did large-scale structure (e.g., galaxies, clusters, larger-scale clustering) come from?

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Detection of gravitational waves with CMB polarization

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Conclusions/Summary