cosmic background radiation

Từ điển Oxford Learners Wordfinder Dictionary

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 background, CMB
• Topics:
cosmology, cosmogony, cosmogeny
• Hypernyms:
cosmic radiation