An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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galactic rotation problem
  پراسه‌ی ِ چرخش ِ کهکشانی  
parâse-ye carxeš-e kahkešâni
Fr.: problème de la rotation galactique  

The discrepancy between observed galaxy → rotation curves and the theoretical prediction, assuming a centrally dominated mass associated with the observed luminous material.

See also: → galactic; → rotation; → problem.