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Milky Way no freak accident, astronomers say Detailed study by University of Sydney astronomers of a galaxy 320 million light years away reveals striking similarities to our own home.
Panorama photo of the Milky Way at the European Southern Observatory in Chile. Photo: H. Hayer/ESO
The first detailed cross-section of a galaxy broadly similar to the Milky Way, published today, reveals that our galaxy evolved gradually, instead of being the result of a violent mash-up. The finding throws the origin story of our home into doubt.
The galaxy, dubbed UGC 10738, turns out to have distinct ‘thick’ and ‘thin’ discs similar to those of the Milky Way. This suggests, contrary to previous theories, that such structures are not the result of a rare long-ago collision with a smaller galaxy. They appear to be the product of more peaceful change.
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