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physical phenomena > event > era > Big Bang era > nucleosynthetic era |
nucleosynthetic era comparison table |
Subject | has start time | has definition | is preceded by | is followed by | is a kind of | has duration |
---|---|---|---|---|---|---|
Big Bang era | relative to the Big Bang | A theoretical era postulated to have occurred after the Big Bang. They are in order :
| era | |||
nucleosynthetic era | 1 s after the Big Bang | The Big Bang era when neutrons were produced and helium and deuterium were synthesized. At t = 200 sec, nucleosynthesis began rather abruptly and virtually all deuterium was synthesized to helium. | lepton era | radiation era | Big Bang era | 1000 s |
Next Big Bang era: Planck era Up: Big Bang era Previous Big Bang era: matter era