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shiftycansnipe t1_iyevh5w wrote

Reply to comment by mangalore-x_x in what exactly happens when 2 galaxies collide? by [deleted]

Same thing, they will begin orbiting one another. The gravity wells are huge and they would have to be Pixel perfect to collide head on which the odds are so vanishingly small as to be treated as zero

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mangalore-x_x t1_iyf1ob4 wrote

I am more interested in the moment those two merge millions/billions years later. Aka not expecting them to smash into each other on first pass.

I do not think I ever read about observation of binary galaxy cores, yet. or that galaxies harbor several super massive black holes as remnants of mergers.

Obviously time frame would be massive and beyond some single pass of of two galaxies in gravitational influence of each other.

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shiftycansnipe t1_iyf20af wrote

We’ve already detected the gravitational waves of two solar masses black holes merging. here is the sound it made

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