Radiation-dominated era

Full-sky image derived from nine years' WMAP data

In physical cosmology, the radiation-dominated era was the first of the three phases of the known universe (after Inflation), the other two being the matter-dominated era and the dark-energy-dominated era. During this era, the dynamics of the universe were set by radiation, which refers generally to the constituents of the universe which moved relativistically, principally photons and neutrinos.

单词	Radiation era
释义	Radiation era 英语百科 Radiation-dominated era In physical cosmology, the radiation-dominated era was the first of the three phases of the known universe (after Inflation), the other two being the matter-dominated era and the dark-energy-dominated era. During this era, the dynamics of the universe were set by radiation, which refers generally to the constituents of the universe which moved relativistically, principally photons and neutrinos.
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Radiation era

Radiation-dominated era