# radiation-dominated era

> period in the universe after the end of inflation and until about 47 thousand years after the Big Bang, during which the energy density of radiation dominated those of matter or dark energy

**Wikidata**: [Q7280326](https://www.wikidata.org/wiki/Q7280326)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Radiation-dominated_era)  
**Source**: https://4ort.xyz/entity/radiation-dominated-era