microwave radiation suffusing the universe, produced during the big bang and subsequently thinned and cooled as the universe expanded.
Diffuse isotrope radiation whose spectrum is that of a blackbody at 3 degrees kelvin and consequently is most intense in the microwave region of the spectrum.
radio (microwave) energy that is nearly uniform in all directions and has a nearly perfect thermal spectrum. It is the greatly redshifted remnant of the early hot universe produced several hundred thousand years after the birth of the universe.
(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
Radiation left over from the Big Bang. Because of the expansion of the Universe, the radiation is detected in the microwave portion of the spectrum, and has a temperature of only 2.7 K.
Radiation left over from the Big Bang. Fluctuation in the distribution of this energy is evidence of the structure of the universe right after the Big Bang.
In cosmology, the cosmic microwave background radiation (most often abbreviated CMB but occasionally CMBR, CBR or MBR, also referred as relic radiation) is a form of electromagnetic radiation discovered in 1965 that fills the entire universe. It has a thermal 2.725 kelvin black body spectrum which peaks in the microwave range at a frequency of 160.4 GHz, corresponding to a wavelength of 1.9 mm. Most cosmologists consider this radiation to be the best evidence for the hot big bang model of the universe.
