Milky Way-Andromeda galactic collision. Artwork showing the future collision between the Milky Way Galaxy (seen edge-on) and the Andromeda Galaxy (seen as a spiral). This collision, which takes place slowly over millions of years, is seen above a landscape of mountains and water. This is the start of the collision, some 4 billion years from the present time. Andromeda's spiral arms have swung out of its galactic plane and are also being tidally stretched. Earth's solar system is being flung out along one of the Milky Way's tidally stretched spiral arms. For the aftermath of this collision, see C014/4726.
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