steady state universe


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steady state universe

n.
A theoretical model of the universe in which the density of matter is constant over space and time, and the observed expansion of the universe is compensated for by the continuous creation of matter to maintain a constant density. Because of its inability to predict the observed cosmic microwave background radiation, the model has been discredited.

steady state universe

A model of the universe in which the ratio of the amount of matter to volume remains the same as the universe continually gets larger. This model requires the unending creation of matter to allow for the unending expansion of the universe. It is generally believed to be discredited by the discovery of radiation remaining from the big bang. Compare big bang.
References in periodicals archive ?
Einstein invented the cosmological constant to expand the fabric of space-time after his own equations for general relativity wouldn't allow for the cosmos to remain static as expected in a steady state universe.
The competing models of the Big Bang and the Steady State Universe were both attempts in the several decades before 1948 to explain the expansion of the universe.
Boone's theory is of "a universal recycling elemental evolutionary ecology" resulting in a "perpetual steady state universe.