steady-state theory

n (Astronomy) a cosmological theory postulating that the universe exists throughout time in a steady state such that the average density of matter does not vary with distance or time. Matter is continuously created in the space left by the receding stars and galaxies of the expanding universe. Compare big-bang theory

Translations

steady-state theory

steady-state theory:

see cosmologycosmology,
area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. Modern Cosmological Theories
..... Click the link for more information. .

steady-state theory

A cosmological theory obeying a perfect cosmological principle in which the Universe appears the same both at all points and all times: it thus had no beginning, will never end, and has a constant mean density of matter. Proposed by Hermann Bondi, Thomas Gold, and Fred Hoyle in 1948, the steady-state theory employs a flat space expanding at a constant rate. There is continuous creation of matter throughout the Universe – or perhaps in galactic centers – to compensate for the expansion. The creation rate is about 10^–10 nucleons per meter cubed per year. The steady-state theory is not readily able to account for the microwave background radiation or the steep radio source counts that indicate an evolving Universe. In its original form it has been abandoned, even by its originators.

steady-state theory

[′sted·ē ¦stāt ′thē·ə·rē] (astronomy) A cosmological theory which holds that the average density of matter does not vary with space or time in spite of the expansion of the universe; this requires that matter be continuously created.

单词	steady-state theory
释义	steady-state theory steady-state theory n (Astronomy) a cosmological theory postulating that the universe exists throughout time in a steady state such that the average density of matter does not vary with distance or time. Matter is continuously created in the space left by the receding stars and galaxies of the expanding universe. Compare big-bang theory Translations steady-state theory steady-state theory: see cosmologycosmology, area of science that aims at a comprehensive theory of the structure and evolution of the entire physical universe. Modern Cosmological Theories ..... Click the link for more information. . steady-state theory A cosmological theory obeying a perfect cosmological principle in which the Universe appears the same both at all points and all times: it thus had no beginning, will never end, and has a constant mean density of matter. Proposed by Hermann Bondi, Thomas Gold, and Fred Hoyle in 1948, the steady-state theory employs a flat space expanding at a constant rate. There is continuous creation of matter throughout the Universe – or perhaps in galactic centers – to compensate for the expansion. The creation rate is about 10^–10 nucleons per meter cubed per year. The steady-state theory is not readily able to account for the microwave background radiation or the steep radio source counts that indicate an evolving Universe. In its original form it has been abandoned, even by its originators. steady-state theory [′sted·ē ¦stāt ′thē·ə·rē] (astronomy) A cosmological theory which holds that the average density of matter does not vary with space or time in spite of the expansion of the universe; this requires that matter be continuously created. ThesaurusSeecosmology
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