What happens when a Black hole meets another Black hole in space?

When any object in a space meets a black hole it gets sucked into it, even light cannot escape it. But if another black hole meets another black hole. What would happen?

This is believed to happen - they two black holes can merge and form a larger black hole (larger meaning more massive - size in the volume sense is meaningless for black holes.

Now as they approach, the gravitational tidal forces would be pretty severe - never done the math for it, but I assume it would be interesting. Once they are close enough, they will simply merge, extending the Schwarchild radius (i.e. event horizon) to that of a mose massive black hole.

everything gets muddled upp !!!they suck each other loool!!!i actully dont know!!hope you get your anwswer!!

you end up with two black holes !!

They merge, and you get a bigger black hole.

Plus, black holes often a lot of dust and rocks in orbit around them. So when two black holes meet, the dust from one is going to hit the dust from the other one. And since the dust is moving like millions of miles an hour, you're going to get a lot of heat and light from the dust. It's going to look like a big explosion.

the one with more power will eat the other one and grow into a larger black hole!

they merge and become a bigger blackhole

This has never been observed and is difficult to predict. black holes all have an infinite gravitational pull and have points of origin that are infinitely small. However it is believed that once any object passes the event horizon of a black hole there is no return this means that whichever black hole passes through the event horizon of the other first Will be absorbed by the other black hole. An observer would see a spontaneously incineration of the black hole followed by which the black hole would disappear. The other black hole would simply be trapped within the other, falling ever close to the first black holes point of origin.

This is supposed to be the cause of enormously energetic GRBs.

The bigger one swallows up the smaller one.

they just Eat Each other Up!!!

1) Surely this has never been seen before, so there is no real answer.
2) I don't think they'd mess each other up, black holes don't tend to move a whole lot. The star about to be a black hole (will not go through the process) would probably be sucked into the original hole. They might merge, but black holes tend to be loners.
This is a difficult question because it hasn't really been recorded. I think absolutely nothing would happen.

When galaxies collide...
Usually massive black holes are found at the centre of galaxies.
Galaxies have been observed which contain two such objects, undoubtedly as a result of an earlier 'merger'
When the two black holes collide, undoubtedly a single more massive one would be produced. By analogy with when a spent supernova collapses, intense gravitational waves would be produced. Their reaction in the preexistent gravitational field of the galaxy would result in the ordinary galactic matter being expelled and the supermassive black hole to go shooting into space!

They will merge.

For more information, and some really cool pictures go to:

http://www.space.com/scienceastronomy/06...

The two blackholes would merge. In this merger, the two blackholes would release energy more powerful than every glowing star blackhole and everything else in the Universe at the time. In the end, the bigger one sucks the other into it. Even though the bigger one is the only one to still exist, the other one would add it's mass to it.

They merge to create a supermassive black hole with a larger accretion disc and an even bigger event horizon

Biggest and more powerful hole wins, swallows the smaller "hole" and the result will increase the mass/size of the winner.

they mate and have little black holes??.