You can trust that FEMA is on it.. and the EPA which will declare it a SuPerFund site.
Actually, with the universe expanding and all galaxies moving away from us (except those that are gravitationally bound) I suspect that whatever humans evolve into in 4 billion years will be thankful to have the bountiful store of matter and energy that Andromeda and Triangulum represent for their use.
And it think the sun is going to live far beyond the 5 billion additional years cited. All it takes to extend it's life is the addition of copious amounts of hydrogen which can be gotten from nearby solar systems. That's just an engineering problem.
Just IMHO of course.
Godspeed
HoA