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At about what time after the Big Bang did the universe pass through the transition from radiation-dominated to a matter-dominated universe?
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At about what time after the Big Bang did the universe pass through the transition from radiation-dominated to a matter-dominated universe?

User Truong Dang
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Answer: Between about 47,000 years and 9.8 billion years after the Big Bang, the energy density of matter exceeded both the energy density of radiation and the vacuum energy density.

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User DomenPigeon
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