Akademik

(cosmology) the theory that the universe maintains a constant average density with matter created to fill the void left by galaxies that are receding from each other

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the steady state theory has been abandoned in favor of the big bang theory

: a theory in astronomy: the universe has always existed and has always been expanding with hydrogen being created continuously and spontaneously — compare big bang theory herein

a theory in which the universe is assumed to have average properties that are constant in space and time so that new matter must be continuously and spontaneously created to maintain average densities as the universe expands. Also called steady state model. Cf. big bang theory.

[1950-55]

steady state theory UK US noun [singular] physics

the theory that the universe has always existed and that the movements of stars have always happened, which is opposed to the big bang theory

Thesaurus: scientific study of the universe_hyponym space and the universe_synonym