The Ladder of Scale · structure
Surface of last scattering
Cosmological · 91.2 billion ly
- Within
- Observable universe
- Distance (ly)
- 45600000000
- Recognised
- 1965
- Population
- the oldest light
- Size (ly)
- 91200000000
- Kind
- Cosmological
- Redshift
- 1100
Notes
The shell we see the microwave background coming from: where the universe became transparent 380,000 years in. It is not an object, it is a time we are looking back at — and it is now 45.6 billion light-years away because space has stretched since.
Open on the The Ladder of Scale shelf — the interactive card, the filters, and everything alongside it.