noun
3K radiation; cosmic background radiation
Technical term in astronomy and cosmology; refers to the cosmic microwave background (CMB) radiation at approximately 3 Kelvin.
See also: 宇宙背景放射
３Ｋ放射はビッグバンの名残と考えられている。
3K radiation is thought to be a remnant of the Big Bang.
宇宙
Cosmic background radiation is also called 3K radiation.