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Preferred term

Giant molecular clouds  

Definition

  • A massive complex of interstellar gas and dust, consisting mostly of molecular hydrogen, that typically stretches over 150 light-years and contains several hundred thousand solar masses. Giant molecular clouds are the principal sites of star formation. (en)

Broader concept

Entry terms

  • GMC (en)

Editorial note

URI

http://astrothesaurus.org/uat/653

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