The Missing Galaxy — “Milky Way’s Long-Lost Companion We Didn’t Know Existed”

 

“It was shocking to realize that the Milky Way had a large sibling, and we never knew about it,” said Eric Bell, University of Michigan professor of astronomy in 2018 about his discovery that the Andromeda galaxy (also named M31), our closest large galactic neighbor, shredded and cannibalized a massive galaxy two billion years ago.

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