Definitions for "Cosmic Microwave Background"
Keywords:  bang, cmb, cosmology, microwave, kelvin
the after glow of thermal radiation left over from the early epoch of the Universe.
Observable radiation (in the microwave portion of the electromagnetic spectrum) left over from the big bang, the cosmic microwave background is considered proof of the big bang. Check out these CfPA cosmic microwave background links: Max and Minima CMB astrophysics research page Big bang cosmology primer The cosmic microwave background
(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