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  • word of the day

    closed universe

    closed universe - 365bet中国官方网站 definition and meaning for word closed universe

    Definition
    (noun) (cosmology) a universe that is spatially closed and in which there is sufficient matter to halt the expansion that began with the big bang; the visible matter is only 10 percent of the matter required for closure but there may be large amounts of dark matter

  • Word used in video below:
    text: the universe again in 12 to 14 hours
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