It’s been hypothesized for a long time. Rogue black holes.
Nasa confirms that occasionally black holes get kicked out of the center of galaxies, and go zooming about. I think “zooming about” is probably not the technical term for what a supermassive black hole does, but it’s going to have to suffice.
A black hole 1 billion times the mass of our sun, zooming through space at 100,000 miles per second.
I don’t think even Bruce Willis and William Shatner, together, could do anything about that, except maybe gawp in awe.
The energy released from the collision of two supermassive black holes is on the order of a hundred million supernovas. I’m still curious what it would look like. We couldn’t see the black holes, but presumably they’d have accretion zones (in the case of a galactic center supermassive, the accretion disk is a galaxy, right?) What would a human experience if they were, say, a light year from that incident? Obviously, there’s such a thing as a “safe distance” but what is it? Would gravity waves rip a human apart, or would we just bend with them and maybe feel something? What would we feel? What would we see? I like explosions, but the idea that there can be such a huge explosion that I can’t even see – for some reason that bugs the hell out of me.
Is this the biggest energy release that happens? I believe the previous biggest energy release was some supernovas apparently create enough of a shockwave that antimatter forms, then reacts with the matter that is present – sort of a pumped-up supernova. But this is clearly bigger. This is the Mother Of All Bombs.
I know 100,000 miles/second means “too slow to get anywhere in the universe, really.” My little human brain can’t make any sense of these numbers. I don’t like the idea that there’s such an incredible explosion and my little human sensory apparatus can’t even appreciate it enough to be scared of it. Part of me is telling myself “this thing ought to be completely terrifying” and another part of me knows it’s giggle-worthy.
Occasionally, I notice that I am walking down a sidewalk and have just stepped on a bunch of ants. It reminds me that there are things out there that can step on us equally unknowingly. That doesn’t bother me because, at the scale at which I live, I can’t do anything about it, anyway. So: pizza for dinner tonight!