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Collision of Milky Way and Andromeda

According to NASA and other numerous astrophysicists' predictions Milky Way and Andromeda Galaxies will collide in about 4 billion years from now. Scientists speculate about it describing how magnificent the visual wonder of huge galaxies' collision could be. In fact, if humanity survives that long, it would be possible to watch this scene before everyone dies.

It would be better if we can watch another collision between two galaxies which doesn't involve Milky Way, though.

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