Andromeda’s and the Milky Way’s black holes will collide. Here’s how it may play out

Supermassive black holes will merge less than 17 million years after galaxy merger

image of Andromeda galaxy

The Milky Way galaxy will merge with neighboring Andromeda (pictured) about 10 billion years from now — a bit later than previously estimated.

David (Deddy) Dayag/Wikimedia Commons (CC-BY-SA-4.0)

The supermassive black holes at the centers of the Milky Way and Andromeda galaxies are doomed to engulf each other in an ill-fated cosmological dance.