recombinationaikaa
Recombinationaikaa (rekombinointiaika) refers to the period in the early universe when free electrons combined with protons to form neutral hydrogen. This process made the cosmos transparent to photons, allowing matter and radiation to decouple and giving rise to the cosmic microwave background (CMB). The epoch occurred roughly 380 000 years after the Big Bang, at a redshift of about z ≈ 1100 and a temperature near 3000 kelvin.
Rekombinationaika varioi over a range of redshifts, roughly from z ≈ 1600 to z ≈ 1100, and it
The culmination of recombinationaikaa is the decoupling of photons, rendering the universe optically thin to Thomson
After recombination, the universe entered a period known as the dark ages, before the formation of the