I sent a form of thermal energy throughout the universe.
The source of cosmic background radiation filled the entire universe.
The cosmic background radiation is believed to be the remains of the radiation emitted by the Universe when it started to get transparent - when it had cooled down to a temperature of about 3000 kelvin.
Cosmic Microwave Background (CMB) Radiation.
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The redshift of the cosmic microwave background radiation
The source of cosmic background radiation filled the entire universe.
cosmic microwave background radiation.
The cosmic background radiation is an observation of the effects of the Big bang [See related question] it does not effect the Universe changing in anyway.
The cosmic background radiation is believed to be the remains of the radiation emitted by the Universe when it started to get transparent - when it had cooled down to a temperature of about 3000 kelvin.
Cosmic Microwave Background (CMB) Radiation.
Cosmic Background Radiation
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The redshift of the cosmic microwave background radiation
The radiation left over from the big bang is found in the microwave region of the electromagnetic spectrum. As the universe expanded and cooled, the intense hard gamma radiation that existed became radio waves in the low gigahertz region, characteristic of a temperature around 30 Kelvin.
I didn't check the year... But the cosmic background radiation is said to support the big bang theory, because it agrees with the radiation that is expected from an expanding Universe.
The "big bang" better described as the rapid expansion of our Universe.
In Cosmic Physics for $1000, Alex, "What is the Steady State Universe?"