by Sid Perkins
The supermassive black holes will merge less than 17 million years after the galaxy merger.
Link: Science News
Here's What May Happen When Andromeda's and the Milky Way's Black Holes Collide
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Re: Here's What May Happen When Andromeda's and the Milky Way's Black Holes Collide
The gas halos of both galaxies have already collided, although the first stars of the participants in this cosmic accident will begin to converge in about four billion years.