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There are some theories, and yes, they are all disturbing.
Black holes are space's boogeymen. Although there are a lot of monsters out there in the universe – supernovas, asteroids, death stars – they are never quite as scary. Black holes retain a aura of mystery and menace. How could they not? They retain everything.
For those who have stumbled on this site having never seen, read, or even heard about science fiction, here is a brief refresher course in spaceology. Black holes are what happen when there is too much of a good thing, only without the good. Too many things, too much mass, and the too much gravity that they produce when pushed together in one place, will eventually collapse into a single point with infinite density.
‘A single point,' you say. ‘Is that what makes them take up at least fifty percent of an IMAX movie screen? The fact that they're a single point?'
I don't appreciate your tone, but no. When we see black holes in space operas and documentaries, usually accompanied by a threatening chorus of cellos, we aren't seeing the black holes themselves. We're seeing the event horizon. A black hole's gravitational force is so intense that once objects get within a certain distance of them, they're sucked in. This happens to every massive object, including light. Since we see reflected light, and no light can get to us once it travels within a certain distance, all we see a large patch of darkness.
Obviously, this makes black holes tough to study. So what happens when two big patches of darkness get so close together that they fall into one another?
According to simulations made by G.A. Shields from the University of Texas, Austin, and E.W. Bonning, from Yale University, the result is often a powerful recoil. Instead of coming together nicely, the forces are so extreme that one black holes is kicked away at a tremendous velocity.
"What is interesting during this phase is the critical separation stage when the black holes get close enough and all the gas trapped between them immediately rushes to the more massive black hole, leading to a brief increase in brightness coupled with an energetic outflow of gas at very high speeds,"
Originally posted by noobsauce13
I think its what he said, its like a negative subtracted by a negative is equaled to a positive...i.e -5-(-5)=10