Cosmic background radiation is electromagnetic radiation from the sky with no discernible source. The origin of this radiation depends on the region of the spectrum that is observed. One component is the cosmic microwave background radiation. This component is redshifted photons that have freely streamed from an epoch when the Universe became tran...
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http://en.wikipedia.org/wiki/Cosmic_background_radiation
(from the article `Nobel Prizes`) The 2006 Nobel Prize for Physics was awarded to two American scientists for discoveries concerning cosmic microwave background radiation, a remnant ... In 1964, Bell Laboratories scientists Robert Wilson and Arno Penzias detected the faint cosmic microwave background (CMB) signal left over from the ... ...
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http://www.britannica.com/eb/a-z/c/147
Diffuse electromagnetic radiation coming from all parts of the sky. It is made up the cosmic microwave background (CMB), cosmic X-ray background (CXB), cosmic infrared background (CIB), and cosmic optical background (COB). Of these components, the CMB is by far the largest, with a total intensity of...
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http://www.daviddarling.info/encyclopedia/C/cosmic_background_radiation.htm
cosmic background radiation or 3 degree radiation, is electromagnetic radiation left over from the original formation of the universe in the Big Bang around 15 billion years ago. It corresponds to an overall background temperature of 3K (-2700C/-4540F), or 30C above absolute zero. In 1992 the Cosmic Background Explorer satellite, COBE, detected sli...
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The background of radiation mostly in the frequency range 3x10
8 to 3x10
11Hz discovered in space in 1965. It is believed to be the cosmologically redshifted radiation released by the Big Bang itself. Also known as the primal glow.Presently it has an energy density in empty space of about 4x10
-14Jm
-3.
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CBR noun (cosmology) the cooled remnant of the hot big bang that fills the entire universe and can be observed today with an average temperature of about 2.725 kelvin
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Electromagnetic radiation left over from the original formation of the universe in the Big Bang between 10 and 20 billion years ago. It corresponds to an overall background temperature of 2.73 K (-270.4°C/-454.8°F), or approximately 3°C above absolute zero. Cosmic background radiation was first detected in 1965 by US phys...
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electromagnetic radiation coming from every direction in the universe, considered the remnant of the big bang and corresponding to the black-body radiation of 3 K, the temperature to which the universe has cooled. Also called
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https://www.infoplease.com/dictionary/cosmic-background-radiation
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