Astronomers discovered the Milky Way was flipped on its side 10bn years ago after a direct collision with a dwarf galaxy, the Gaia Sausage, reshaping its structure.
It took place long before the solar system came into existence
Jul 22, 2026
04:01 pm
What's the storyA team of astronomers from Durham University has revealed that the Milky Way was flipped on its side after a violent collision with a dwarf galaxy known as Gaia Sausage.
The cataclysmic event took place about 10 billion years ago, long before the solar system came into existence.
Milky Way flipped in collision with dwarf galaxy 10bn years ago, astronomers say
Ancient collision with the Gaia Sausage dwarf galaxy 10 billion years ago may have flipped the Milky Way by more than 90 degrees, astronomers say
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