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Steady-state model
Model of the universe – alternative to the Big Bang model / From Wikipedia, the free encyclopedia
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In cosmology, the steady-state model or steady state theory is an alternative to the Big Bang theory. In the steady-state model, the density of matter in the expanding universe remains unchanged due to a continuous creation of matter, thus adhering to the perfect cosmological principle, a principle that says that the observable universe is always the same at any time and any place.
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From the 1940s to the 1960s, the astrophysical community was divided between supporters of the Big Bang theory and supporters of the steady-state theory. The steady-state model is now rejected by most cosmologists, astrophysicists, and astronomers.[1] The observational evidence points to a hot Big Bang cosmology with a finite age of the universe, which the steady-state model does not predict.[2]