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protogalaxy

См. также в других словарях:

  • protogalaxy — [prōt΄ō gal′ək sē] n. pl. protogalaxies in some cosmological theories, a huge cloud of dust and hydrogen gas out of which millions of protostars are formed protogalactic [prōt΄ōgə lak′tik] adj …   English World dictionary

  • Protogalaxy — In physical cosmology, a protogalaxy, which could also be called a primeval galaxy , is a cloud of gas which is forming into a galaxy. It is believed that the rate of star formation, during this period of galactic evolution, will determine… …   Wikipedia

  • protogalaxy — noun Date: 1950 a cloud of gas believed to be the precursor to a galaxy …   New Collegiate Dictionary

  • protogalaxy — /proh toh gal euhk see, proh toh gal /, n., pl. protogalaxies. Astron. the large concentration of gas and dust from which a galaxy is formed. [1945 50; PROTO + GALAXY] * * * ▪ cosmology       in cosmology, vast cloud of gas that by contraction… …   Universalium

  • protogalaxy — noun A cloud of gas which is starting to form a galaxy …   Wiktionary

  • protogalaxy — pro·to·galaxy …   English syllables

  • protogalaxy —   n. hypothetical cloud of gas from which present galaxies are thought to have formed …   Dictionary of difficult words

  • protogalaxy — …   Useful english dictionary

  • galaxy — /gal euhk see/, n., pl. galaxies. 1. Astron. a. a large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space. b. (usually cap.) See Milky Way. 2. any large and brilliant or impressive… …   Universalium

  • Galaxy — This article is about the astronomical structure. For other uses, see Galaxy (disambiguation). NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 55,000 light years in diameter and approximately 60 million light… …   Wikipedia

  • Galaxy groups and clusters — are the largest known gravitationally bound objects to have arisen thus far in the process of cosmic structure formation.[1] They form the densest part of the large scale structure of the universe. In models for the gravitational formation of… …   Wikipedia

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