cosmic background radiation
- cosmic background radiation
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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 cosmic microwave background.
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Electromagnetic radiation, mostly in the
microwave range, believed to be the highly redshifted residual effect (see
redshift) of the explosion billions of years ago from which, according to the big-bang model, the universe was created.
It was discovered by accident in 1964 by Robert W. Wilson and Arno Penzias; its presence supports the predictions of big-bang cosmology.
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Universalium.
2010.
Look at other dictionaries:
cosmic background radiation — 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 • Syn: ↑CBR, ↑cosmic microwave background radiation, ↑CMBR, ↑cosmic microwave… … Useful english dictionary
cosmic background radiation — noun Date: circa 1976 background radiation … New Collegiate Dictionary
cosmic background radiation — noun The faint, uniform flux of microwave radiation that permeates all space and is the redshifted residual effect of the Big Bang … Wiktionary
Cosmic Background Radiation — Microwave radiation coming from all directions of the universe. It is the remnant, the Redshift glow, of the Big Bang. Also called CBR … The writer's dictionary of science fiction, fantasy, horror and mythology
Cosmic Background Explorer — (COBE) General information NSSDC ID 1989 089A Organization NASA … Wikipedia
Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology … Wikipedia
Background radiation — This article is about ionizing radiation. For microwave background radiation from space, see Cosmic background radiation and cosmic background. Thermal radiation emitted by Earth is not considered in this category because it is not ionizing.… … Wikipedia
Cosmic Background Explorer — ▪ United States satellite U.S. satellite placed in Earth orbit in 1989 to map the “smoothness” of the cosmic background radiation (Cosmos) field and, by extension, to confirm the validity of the big bang (big bang model) theory of the… … Universalium
cosmic microwave background radiation — 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 • Syn: ↑cosmic background radiation, ↑CBR, ↑CMBR, ↑cosmic microwave background,… … Useful english dictionary
background radiation — noun Date: 1968 the microwave radiation pervading the universe that exhibits a corresponding blackbody temperature of 2.7 K and that is the principal evidence supporting the big bang theory called also cosmic background radiation … New Collegiate Dictionary
