Cosmic Microwave Background Radiation

nounverified·updated May 18, 2026

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(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

MWE

Classifications

per-axis with provenance

Entity Type

Unknown—authoritativeglossary_import_default_pending_classifier

?unassignedlast reviewed —

Sensitivity

unclassified

Information Class

unclassified

Variants

4 surface forms

synonym: cosmic background radiation
plural: Cosmic Microwave Background Radiations
possessive: Cosmic Microwave Background Radiation's
pluralpossessive: Cosmic Microwave Background Radiations'

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