electromagnetic radiation coming from every direction in the universe, considered the remnant of the big bang and corresponding to the black-body radiation of 3 K, the temperature to which the universe has cooled.
microwave radiation in the universe, produced during the Big Bang and subsequently thinned and cooled as the universe expanded; also called background radiation
cosmic background radiation
Weak radio-frequency radiation traveling through outer space with equal intensity in every direction. It is thought to be residual radiation from a period shortly following the big bang, when the universe was very hot. Also called microwave background.
noun, Astronomy. 1. fine particles of matter in space. noun 1. fine particles of solid matter occurring throughout interstellar space and often collecting into clouds of extremely low density See also nebula (sense 1)
- Cosmic irony
noun the idea that fate, destiny, or a god controls and toys with human hopes and expectations; also, the belief that the universe is so large and man is so small that the universe is indifferent to the plight of man; also called irony of fate Examples Crane uses the theme of cosmic irony.
noun 1. Physics. radio-frequency noise that originates outside the earth’s atmosphere.
noun, Physics. 1. a radiation of high penetrating power that originates in outer space and consists partly of high-energy atomic nuclei. cosmic ray A ray of radiation of extraterrestrial origin, consisting of one or more charged particles such as protons, alpha particles, and larger atomic nuclei. Cosmic rays entering the atmosphere collide with atoms, producing […]