Another theory about the Universe, called the Steady State theory, says that the Universe has always existed, and that the Universe is expanding and constantly creating matter as it expands.

Box 9. Steady-State Effects of Simultaneous 10 Percentage Point Increases in Ratios of Government Debt to GDP of All Industrial Countries ...

Others took up the big bang theory, and for several years there were strong debates between those supporting it and those who favored a "steady state" theory of the universe, in which the universe ...

But there are a handful of theories - mostly mathematical models - that offer a steady-state explanation for the universe. One of them is called Causal Set Theory. It’s a little different ...

The discovery of the CMBR, after it had been predicted by the theory, provided very strong support for the Big Bang theory, and led to the Big Bang becoming the currently accepted model of the ...