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physical phenomena > event > era > Big Bang era > radiation era |
radiation era comparison table |
Subject | has start time | has definition | is preceded by | is followed by | is a kind of | has duration | has temperature |
---|---|---|---|---|---|---|---|
Big Bang era | relative to the Big Bang | A theoretical era postulated to have occurred after the Big Bang. They are in order :
| era | ||||
radiation era | 10 s after Big Bang | The Big Bang era when the temperature had dropped to 109K and the rate of electron-positron pair annihilation exceeded the rate of their production, leaving radiation the dominant constituent of the universe. | nucleosynthetic era | matter era | Big Bang era | 1012 s | 109K |
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