Timeline of Environmental History - 14,000,000,000 Ya + 1 Second

14,000,000,000 Ya + 1 Second

1 s

• Astro : Lepton epoch : Lepton epoch

10 s

• Astro : Photon epoch : Photon epoch

180 s

• Astro : Nucleosynthesis : Big Bang nucleosynthesis

1200 s

• Astro : Nucleosythesis Ends

13.8 Ga

• Astro : Matter domination :

13.6 Ga

• Astro : Recombination : Recombination (cosmology)

13.5 Ga

• Astro : Dark age : Hydrogen line

13.0 Ga

• Astro : Reionization : Reionization
• Astro : Formation of stars : Star formation

12.7 Ga

• Astro : Formation of galaxies : Galaxy formation and evolution
• Astro : Formation of groups, clusters and superclusters : Large-scale structure of the cosmos