Our Milky Way galaxy is going to collide with the Andromeda Galaxy. There's no need to panic — it won't happen for several billion years — but astronomers do want to know what things will look like once the galaxies merge. Luckily, astronomers just found a bunch of merging galaxies that will better help them predict what will happen when the big collision finally comes to our neighborhood.
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Written by Elizabeth Howell November 10, 2018
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