# neutrino decoupling

> event in the early universe, around 1 second after the Big Bang, when the universe cooled down sufficiently so that neutrinos ceased significantly interacting with baryonic matter

**Wikidata**: [Q3042891](https://www.wikidata.org/wiki/Q3042891)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Neutrino_decoupling)  
**Source**: https://4ort.xyz/entity/neutrino-decoupling


## References

1. Planck 2018 results: VI. Cosmological parameters