Big bang theory

Etymology

English astronomer Fred Hoyle is credited with coining the term “Big Bang” during a talk for a March 1949 BBC Radio broadcast,[37] saying: “These theories were based on the hypothesis that all the matter in the universe was created in one big bang at a particular time in the remote past.”[38][39]

It is popularly reported that Hoyle, who favored an alternative “steady-state” cosmological model, intended this to be pejorative,[40] but Hoyle explicitly denied this and said it was just a striking image meant to highlight the difference between the two models.[41][42]

Quantum theory

Quantum theory is the theoretical basis of modern physics that explains the nature and behavior of matter and energy on the atomic and subatomic level. The nature and behavior of matter and energy at that level is sometimes referred to as quantum physics and quantum mechanics