Beginning in 1948, the american cosmologist george gamow and his coworkers, ralph alpher and robert herman, investigated the idea that the chemical elements might have been. The cosmic microwave background (cmb, cmbr), or relic radiation, is microwave radiation that fills all space in the observable universe. With no free electrons to scatter photons, the universe became transparent for the first time in cosmic history.
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From this point on, matter and radiation interacted much less frequently;
The cosmic microwave background (cmb) or cosmic microwave background radiation (cmbr) is the residual thermal radiation from the big bang, the event that marks the beginning of.
The colors of the map represent small temperature. Regarded as an 'echo' of the big bang, cmb fills the universe. The cosmic microwave background is a snapshot of the oldest light in our universe, from when the cosmos was just 380,000 years old. A group at princeton was able to identify this radiation as the leftover remnants of the big bang, called the cosmic microwave background, or cmb for short.