What about Black holes?

Question

I have a question, so, black holes "eat" everything on their path, even light, then what would hapen if two black holes colide or come into each other's gravitational field?

Answer 1

The 2 black holes become one.
This is actually where Stephan Hawkins started from to make his startling discovery that black holes are not really black.
when 2 black holes eat each other the area of the final black hole's event horizon is greater than the sum of the area of the original 2 black hole's event horizons. This is similar something called entropy (disorder) and anything with entropy should have a temperature. With some inspired physics Roger Penrose and Stephan Hawkins proved that it was entropy and black holes do indeed have a temperature, a result that has implications for the future of the universe steming from your question.
This is a great question and you really should read chapters 6 and 7 of brief history of time

Answer 2

A black hole is an object with a gravitational field so powerful that even electromagnetic radiation (such as light) cannot escape its pull.[1]

Both Newtonian physics and Einstein's general relativity predict the existence of black holes, but general relativity provides a much more accurate and informative analysis, for example:

The Newtonian version incorrectly assumes that photons have rest mass (see History of the black hole concept).
The Newtonian version is based on the concept of escape velocity and therefore cannot explain: why there is a well-defined region from which nothing can escape; why the most powerful spaceship cannot escape.
Merely having a very large mass is not enough to make a black hole - if it were, most galaxies would be black holes. A black hole consists of mass concentrated into an abnormally small volume:

The gravitational pull between two objects is inversely proportional to the square of the distance between them (Newton's Law of Gravitation). For example, if you reduce the distance by a factor of 10 you increase the force by a factor of 100. So a star's or planet's gravitational pull becomes stronger very rapidly as the distance from its center decreases.
In a normal star or even in a neutron star the radius of the outer surface is so large that the gravitational pull at the surface is not strong enough to prevent light from escaping.
So a black hole can only form if a similar mass is compressed into a much smaller radius - so small that the result is not like anything one could reasonably describe as "matter".

Answer 3

WOW! I've never thought of that. I like your line of thinking, like the unmovable object meets the unstoppable force kind of way. Find some way of forwarding the question to Steven Hawkings if you can. It would drive him ape-sh*t, I bet. LOL! I would bet, though, they would spin greatly around one another, eventually leading to the smaller of the two merging into the larger one, creating an even greater black hole.... Either that or creating a time rift that would bring back the dinosaurs to the present, making them more of a problem than the rats in New York City.

Answer 4

That happens quite often. The two merge and become one bigger black hole. Get it?

Answer 5

They create a larger black hole.

Answer 6

They would produce ripples of gravity waves which would alter the adjacent space time.

Answer 7

You get a really, really, reeeeeally big black hole. See link.