NASA’s Hubble telescope captured the instance when black holes from different galaxies collided. A galaxy merger is a billion-plus-year process.
We’re just beginning to imagine the titanic forces involved when two galactic cores and their supermassive black holes merge like in this simulation. Click to see @NASAHubble reveal actual images of the process - within 10 million years of merger: https://t.co/x9Ig2bhXED pic.twitter.com/JSob7MefOS
— NASA Goddard (@NASAGoddard) November 8, 2018