Description: Dans la Voie lactée, le bulbe galactique est la région autour du centre galactique, où les étoiles sont disposées dans un volume moins aplati que dans la région environnante qui est en forme de disque. Le bulbe de la Voie lactée contient principalement de vieilles étoiles, mais aussi de jeunes étoiles. D'autres galaxies spirales possèdent des bulbes centraux d'étendue variable.

Related Terms:

• Centre galactique
• Disque galactique
• Halo galactique
• Galaxie

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 have been approved by a research astronomer and a teacher

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