An Etymological Dictionary of Astronomy and Astrophysics

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فرهنگ ریشه‌شناختی اخترشناسی-اخترفیزیک

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Galactic habitable zone
  زنار ِ زیست‌پذیر ِ کهکشان  
zonâr-e zistpazir-e kahkešân
Fr.: zone habitable galactique  

A region of the Galaxy whose boundaries are set by its calm and safe environment and access to the chemical materials necessary for building terrestrial planets similar to the Earth. → circumstellar habitable zone; → habitable zone.

See also: → galactic, → habitable;
→ zone.