Nebulosa Espirala
Nebulosa espirala es un tèrme astronomic ancian que designava lei galaxias espiralas avans la descubèrta de la natura extragalactica d'aqueleis objèctes.
Adoptat dins lo corrent deis ans 1840 ambé la descubèrta dei premierei galaxias espiralas, foguèt abandonat durant leis ans 1910-1920.
Liames intèrnes
Bibliografia
Nòtas e referéncias
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