An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Whirlpool galaxy (M51)
  کهکشان ِ گرداب  
kahkešân-e Gerdâb (#)
Fr.: galaxie du Tourbillon  

A large → spiral galaxy of type Sc seen → face-on in the constellation → Canes Venatici and lying about 31 million → light-years away. Also known as M51 and NGC 5194. It is interacting with a small irregular galaxy NGC 5195.

See also: → whirlpool; → galaxy.