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Did the Milky Way steal its stars from other galaxies?

The mini Sagittarius galaxy wheels around the Milky Way in a ring-shaped spiral. But every time it gets too close, it pays a price: The heftier gravitational tug of the bigger galaxy steals its stars. In fact, new research suggests Sagittarius has lost 30% of its stars and 90% of its dark matter to the Milky Way over billions of years, Seeker reports. The study, recently accepted to The Astrophysical Journal, also found the Milky Way may have corralled six other stars from other galaxies. Researchers hope to keep looking for more.


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