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Rough times in the Galactic countryside

Knowledge of how the Milky Way formed and evolved is deficient. Simulations show that a past encounter with another galaxy may account for the Galaxy's intricate morphology. See Letter p.301

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Figure 1: Star stream.



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Correspondence to Curtis Struck.

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Struck, C. Rough times in the Galactic countryside. Nature 477, 286–287 (2011).

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