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Milky Way merged with dwarf galaxy 10 billion years ago, say scientists

Video. 'Milky Way merged with dwarf galaxy 10 billion years ago'

Updated: 24/07/2019 - 16:11 GMT+2

A colossal cosmic collision roughly 10 billion years ago saw our galaxy's mass expand by a quarter after merging with a smaller one, say scientists.

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'Milky Way merged with dwarf galaxy 10 billion years ago'

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