An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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future light cone
  مخروط ِ نوری ِ آینده  
maxrut-e nuri-ye âyandé (#)
Fr.: cône de lumière futur  

The set of all points in a → space-time diagram that are reached by signals travelling from a specified point at the speed of light.

See also: → future; → light; → cone.