Steady state theory Vs Big Bang Theory

The Big Bang theory was not always as popular as it is today. In the 1940s Sir Fred Hoyle and others developed an alternative mathematical model of the Universe that did not start in a massive expansion.

They said that matter is continuously created at a rate that keeps the average density of the Universe the same as it expands. Though the Steady State theorists' ideas are largely discredited today, their research pushed the Big Bang supporters to back up their theory with evidence.

Interestingly, it was Hoyle who coined the term Big Bang in an attempt to put down the idea that the Universe had a beginning.

In cosmology, the Steady State theory is an alternative to the Big Bang model of the evolution of the universe. In the steady-state theory, 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 asserts that the observable universe is basically the same at any time as well as at any place.

While the steady state model enjoyed some popularity in the mid-20th century, it is now rejected by the vast majority of cosmologists, astrophysicists and astronomers, as 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.

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