What is another word for cosmic microwave background radiation?
Pronunciation: [kˈɒzmɪk mˈa͡ɪkɹə͡ʊwˌe͡ɪv bˈakɡɹa͡ʊnd ɹˌe͡ɪdɪˈe͡ɪʃən] (IPA) 
The term "cosmic microwave background radiation" (CMB) refers to the electromagnetic radiation that is present throughout the universe. It is often used synonymously with terms such as "relic radiation," "cosmic glow," or "cosmic microwave glow." This radiation plays a crucial role in understanding the structure and evolution of the universe since it can provide information on its earliest stages, including the density and composition of matter and the history of the universe's expansion. While the term "CMB" remains the most commonly used term, these synonyms provide a useful alternative when discussing this important component of cosmology.
