The Ladder of Scale · structure
Observable universe
Cosmological · 93 billion ly
- Coordinates
- origin — we are inside it
- RA (deg)
- 0
- Dec (deg)
- 0
- Within
- —
- Population
- ~2 trillion galaxies
- Size (ly)
- 93000000000
- Kind
- Cosmological
- Redshift
- ∞ at the horizon
Notes
Everything whose light has had time to reach us: a sphere 46.5 billion light-years in radius, larger than the 13.8 billion years of travel would suggest because it expanded on the way. What lies beyond is not merely unseen but unseeable, and there is no reason to think it ends.
Open on the The Ladder of Scale shelf — the interactive card, the filters, and everything alongside it.