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Glossary term: Barra galáctica

Description: Muchas galaxias espirales tienen una barra, una estructura situada en su región central en la que la mayor parte de las estrellas, el gas y el polvo se distribuyen a lo largo de una estructura lineal. Los brazos espirales de la galaxia comienzan en los extremos exteriores de esta barra. Las galaxias espirales con barra se denominan galaxias espirales barradas. Se cree que la Vía Láctea es una galaxia espiral barrada.

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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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Andromeda is a bright disk, with dark spiral lines in it, tilted up at the west end. Two small bright blobs lie left & right

A visible light image of the Andromeda Galaxy

Caption: The Andromeda Galaxy viewed in visible light. Like our Milky Way, Andromeda is a barred spiral galaxy. Here we can see its bright core and spiral disk. The glow from the stars in the disk is interrupted by lanes of dust that form part of its spiral structure. Andromeda is the largest galaxy in the Local Group of galaxies that includes the Milky Way. To the left of the core and just above the disk we see the dwarf galaxy M32 and to the right and below the disk we see the dwarf galaxy M110. These are both satellite galaxies of the Andromeda Galaxy.
Credit: Torben Hansen credit link

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