Not any time soon but in the next 4 billion years it is predicted that our galaxy, the Milky Way will be colliding with its neighbour galaxy, Andromeda.
This was confirmed by NASA, and scientists using the Hubble telescope.
According to NASA this collision will not have damaging effects, as the sun and the planets will not be affected. But as a result of this the two galaxies will be formed into one causing increasd gravitational pull, this can make everything in our galaxy shift witch can effect us greatly.
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