The cosmic microwave background (CMB) is thought to be leftover radiation from the Big Bang, or the time when the universe began. As the theory goes, when the universe was born it underwent a rapid inflation and expansion. ... The CMB represents the heat left over from the Big Bang.
Defenestration means "The act of throwing someone out of a window" but it has two meanings, the other meaning is "To remove someone from a position of power".