An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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observable universe
  گیتی ِ نپاهیدنی، ~ نپاهش‌پذیر  
giti-ye nepâhidani, ~ nepâhe&#353pazir
Fr.: univers observable  

The extent of the Universe that we can see with the aid of the largest telescopes. Its ultimate boundary is determined by the → cosmic horizon size.

See also: → observable; → universe.