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era comparison table
Subject has start time has definition is preceded by is followed by has temperature
Big Bang erarelative to the Big BangA theoretical era postulated to have occurred after the Big Bang. They are in order :
  1. Planck era
  2. hadron era
  3. inflation era
  4. lepton era
  5. nucleosynthetic era
  6. radiation era
  7. matter era
   
geological era     

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