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What event marks the end of the cosmic dark ages?
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The formation of the first stars and galaxies, which reionized the universe and ended the cosmic dark ages.
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What is the process of nucleosynthesis?
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Nucleosynthesis refers to the formation of new atomic nuclei from pre-existing particles like protons and neutrons, occurring during the first few minutes of the universe.
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Which era follows the inflationary period in the Big Bang Theory?
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The radiation-dominated era follows the inflationary period.
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What is the significance of the 'recombination' period?
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The 'recombination' period is significant because electrons combined with protons and other nuclei to form neutral atoms, allowing the universe to become transparent to radiation.
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What is the sequence of universal matter aggregation after the Big Bang?
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Post Big Bang, matter aggregated into subatomic particles, then atoms, followed by gaseous nebulae, stars, galaxies, and larger cosmic structures.
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Why didn't normal atoms form immediately after the Big Bang?
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Normal atoms didn't form immediately after the Big Bang because the universe was too hot for electrons to combine with nuclei.
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Define cosmic inflation in the context of the Big Bang.
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Cosmic inflation is a theory proposing that the universe underwent an extremely rapid expansion, exponentially growing in size within a fraction of a second after the Big Bang.
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How does the epoch of reionization affect cosmic background radiation?
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The epoch of reionization affects the cosmic background radiation by scattering photons, making small changes observable in its temperature and polarization.
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What happens during the decoupling of light?
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During decoupling, photons decouple from matter as the universe cooled, allowing them to travel freely, leading to the cosmic microwave background.
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What is meant by baryonic matter?
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Baryonic matter refers to ordinary matter consisting of protons, neutrons, and electrons, as opposed to dark matter.
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What is dark matter's role following the Big Bang?
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Dark matter's role following the Big Bang is to provide gravitational stability, influencing the formation and structure of galaxies.
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What is the significance of 'cold spots' in the cosmic microwave background?
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'Cold spots' in the cosmic microwave background may indicate regions of greater matter density, hinting at processes of galaxy formation.
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What transformations of chemical elements took place post-Big Bang?
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Hydrogen and helium formed mostly, with heavier elements created in the hearts of stars and distributed through supernovae.
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What is the photon epoch?
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The photon epoch is a period dominated by radiation, lasting from about 10 seconds to 370,000 years after the Big Bang.
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What defines the end of the radiation-dominated era?
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The end of the radiation-dominated era is defined by the time matter began to dominate over radiation as the universe continued to expand and cool.
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