Unne galacsie est, in cosmologie, un assimblache d'étoéles, ed gaz, ed poussières et ed matière noère, contenant parfos un trou noèr supermassif dins sin chinte.
Chele Voé lactée, chele galacsie dins laquelle s' treuve ech Sistème solère, compte des chintènes ed millars d'étoles (1011) et pi a unne éstinsion dechl' orde ed 100 000 innées-leurmière.
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