Andromeda Galaxy Had a Much More Violent History Than Our Milky Way

January 11, 2015 11:26 PM

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Astronomers have taken a closer look at the nearby Andromeda galaxy and have made some startling discoveries. They've found striking differences from our own Milky Way, suggesting a much more violent history of mergers with smaller galaxies.

In this latest study, the researchers combined data from two large surveys of stars in Andromeda, one conducted by the W.M. Keck Observatory and the other using the Hubble Space Telescope. The surveys measured more than 10,000 individual bright stars in Andromeda, creating high-resolution imaging at...

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