expanding universe

expand′ing u′niverse

n. a model of the universe, based on observed redshifts of distant galaxies, in which the galaxies are receding from each other at a speed proportional to their separation. [1930–35]

ex·pand·ing universe

(ĭk-spăn′dĭng) A model of the universe in which the volume of the universe is expanding. It is based on the idea that the red shift in light from distant galaxies is evidence that all galaxies are moving away from one another. See Notes at big bang, Doppler effect.

Translations

universo in espansione

expanding universe

expanding universe:

see universeuniverse,
totality of matter and energy in existence. The study of the origin of the universe, or cosmos, is known as cosmogony, and that of its structure and evolution, cosmology. The age of the universe depends on which theory of cosmology one accepts.
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expanding Universe

The observation that radiation from distant galaxies is redshifted leads to the conclusion that all galaxies (beyond the Local Group) are receding from us or, more precisely, that the distance between clusters of galaxies is continuously increasing. The Universe as a whole is therefore expanding. This expansion was discovered by Edwin Hubble in 1929 although it had already been suggested by theoretical cosmologists. It is the observational basis of the Big Bang theory. The Universe may eventually contract if the deceleration parameter exceeds 0.5. See Hubble constant; Hubble's law; redshift.

expanding universe

[ik¦spand·iŋ ′yü·nə·vərs] (astrophysics) Explanation of the red shift observed in spectral lines from distant galaxies as due to a mutual recession of galaxies away from each other. (relativity) A model of the universe describing the process defined in the astronomy definition, in which the universe is nonstatic, homogeneous, and isotropic; based on Einstein's field equations with a nonvanishing cosmical constant.

单词	expanding universe
释义	expanding universe expand′ing u′niverse n. a model of the universe, based on observed redshifts of distant galaxies, in which the galaxies are receding from each other at a speed proportional to their separation. [1930–35] ex·pand·ing universe (ĭk-spăn′dĭng) A model of the universe in which the volume of the universe is expanding. It is based on the idea that the red shift in light from distant galaxies is evidence that all galaxies are moving away from one another. See Notes at big bang, Doppler effect. Translations universo in espansione expanding universe expanding universe: see universeuniverse, totality of matter and energy in existence. The study of the origin of the universe, or cosmos, is known as cosmogony, and that of its structure and evolution, cosmology. The age of the universe depends on which theory of cosmology one accepts. ..... Click the link for more information. . expanding Universe The observation that radiation from distant galaxies is redshifted leads to the conclusion that all galaxies (beyond the Local Group) are receding from us or, more precisely, that the distance between clusters of galaxies is continuously increasing. The Universe as a whole is therefore expanding. This expansion was discovered by Edwin Hubble in 1929 although it had already been suggested by theoretical cosmologists. It is the observational basis of the Big Bang theory. The Universe may eventually contract if the deceleration parameter exceeds 0.5. See Hubble constant; Hubble's law; redshift. expanding universe [ik¦spand·iŋ ′yü·nə·vərs] (astrophysics) Explanation of the red shift observed in spectral lines from distant galaxies as due to a mutual recession of galaxies away from each other. (relativity) A model of the universe describing the process defined in the astronomy definition, in which the universe is nonstatic, homogeneous, and isotropic; based on Einstein's field equations with a nonvanishing cosmical constant. FinancialSeeUniverseThesaurusSeeuniverse
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