noun
cosmic background radiation
Technical term in astronomy and cosmology; refers to the faint electromagnetic radiation that fills the universe, especially the cosmic microwave background (CMB).
宇宙背景放射はビッグバンの名残と考えられている。
Cosmic background radiation is thought to be a remnant of the Big Bang.
More specific term for the cosmic microwave background (CMB), a major component of cosmic background radiation.
Compound of 宇宙 (uchū, 'universe'), 背景 (haikei, 'background'), and 放射 (hōsha, 'radiation'). A direct translation of the English term 'cosmic background radiation'.