An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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gravitational encounter
  رویارویی ِ گرانشی  
ruyâruyi-ye gerâneši
Fr.: rencontre gravitationnelle  

An encounter in which two moving bodies alter each other’s direction and velocity by mutual → gravitational attraction.

See also: → gravitational; → encounter.