Map of the Universe
Cosmic dawn (first stars, z ≈ 20)
Cosmic epoch · Cosmological process in the early universe
About Cosmic dawn (first stars, z ≈ 20)
The map lists it as a cosmic epoch and shows it at the scale of the large-scale universe, drawn on the supergalactic plane.
Its existence is not confirmed: it is shown where it has been proposed.
The first stars probably formed 100–200 million years after the Big Bang (z ≈ 20–30). Not yet observed directly.
Key numbers
| Distance (comoving, today) | 35.7 billion light-years (10,940 Mpc) |
|---|---|
| Redshift z | 19.8 |
| Light travel time | 13.61 billion years |
Where it is
Its place in the universe, from the inside out: Observable universe.
Zoom out to see it in context: Observable universe, a view about 100 billion light-years across.
From Wikipedia
In the fields of Big Bang theory and cosmology, reionization is the process that caused electrically neutral atoms in the primordial universe to reionize after the lapse of the "dark ages". Detecting and studying the reionization process is challenging but multiple avenues have been pursued.
Excerpt from the Wikipedia article Reionization, licensed CC BY-SA 4.0.
Nearby on the map
- Dark ages (z ≈ 1100 to 20) Cosmic epoch
- Edge of the observable universe Region / boundary
- ULAS J1342+0928 Quasar / active galaxy
- ULAS J1120+0641 Quasar / active galaxy
- GRB 090429B Explosion or burst
- Cosmic microwave background Cosmic epoch