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Milky Way may get an extension
Discovery of new structure suggests galaxy has a rare symmetry
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Google+A new study suggests the Milky Way doesn’t need a makeover: It’s already just about perfect.
Astronomers base that assertion on their discovery of a vast section of a spiral, star-forming arm at the Milky Way’s outskirts. The finding suggests that the galaxy is a rare beauty with an uncommon symmetry — one half of the Milky Way is essentially the mirror image of the other half.
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