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Answer the cold spots represent dense areas the seeds

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Unformatted text preview: h so electrons & protons combine to form atoms. Neutral atoms then no longer interact with the CMB.) What is the significance of the hot and cold spots we observe in the CMB? (Answer: the cold spots represent dense areas, the seeds from which galaxies and galaxy clusters will eventually form.) Big Bang nucleosynthesis: why did it begin after 3 minutes, and why did it stop? (Answer: universe cools down as it expands. Before 3 minutes, it was too hot for nuclei to stay together—high ener...
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