If I recall right, a THOSE* thing is already underway. Our galaxy is colliding with Andromeda.
With such masses—even though spread across vast space,,,who knows how close one system will come to another. Should there be a TDFCS**, I imagine good ol’ Earth will be tossed away like a shot, crushed to a smear, or just be sucked into a sun.
THOSE: The Hunk of Shit Effect
*TDFCS: Too Damn Fucking Close Scenario
Some spoil-sports say: “Without intervention, by the time that the two galaxies collide, the surface of the Earth will have already become far too hot for liquid water to exist, ending all terrestrial life, which is currently estimated to occur in about 1.4 billion years due to gradually increasing luminosity of the Sun.”
I’m gonna mark THAT one on my calendar and take bets on it happening.
I’ll hold the money.