| Time (t) after Big Bang)/(Cosmic Epoch) | Temperature (K) | Pressure (Pa) | Composition |
| <10−12 sec (Quantum Space Epoch) | >1012 | >1032 | 1) Hot spaceons, radiation (?) |
| 10−12 to 0.02 sec (Quark, Hadron, Lepton, Electrons, Protons, Neutrons) | 1011 - 109 | 1032 - 1027 | 2) Radiation, quarks, gluons, “gluon soup”, fundamental particles |
| 0.02 to 300 sec/ (Nucleosynthesis) | 109 - 108 | 1027 - 1015 | 3) Nuclei of H, He, D, Li (plasma) + radiation |
| 3.8 × 105 to 109 yrs/(Dark Ages to Matter dominated) | 3 × 103 - 4 | 10−11 - 10−22 | 4) Matter in galaxies, stars, planets, gases, plasma, solid |
| 109 to 13.8 × 109 yrs/ (Dark Energy dominated) | 4 - 2. | 10−22 | 5) Dark Energy |