Glossary term: Ammasso globulare
Description: Un ammasso globulare è un gruppo di stelle relativamente massicce, di forma sferica e densamente ammassate, legato gravitazionalmente e stabile. Nella Via Lattea, gli ammassi globulari sono costituiti solo da stelle molto vecchie, in genere di età compresa tra 11 e 13 miliardi di anni. La Via Lattea ha circa 160 ammassi globulari (per lo più situati nel suo alone), mentre le galassie ellittiche giganti possono averne molte migliaia.
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
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Related Media
Stelle in ammassi globulari vicino al cuore della Via Lattea
Credit: ESA/Hubble & NASA, R. Cohen credit link
License: PD Public Domain icons