| Epoch | Time (t) | Contents |
| Birth | <10−12 sec <10−4 yr | Space quanta, radiation, fundamental particles, matter |
| Growth and aggregation | <10−4 to 138 yrs | matter formed nebulae, stars, planets, |
| Ageing and Consolidation | >107 to 109 yrs | agglomeration to galaxies, clusters, Black Hole formation |
| The End | 109 to >1012 yrs | Stars died, Black Holes, Big Crunch |