can a blackhole attract another blackhole ,if at all they come close to each other?

Answer 1

Yes, they will most likely go into mutual orbit. They may later merge.

Answer 2

Black hole gravity acts exactly like gravity from a normal star or planet. Black holes can attract each other and orbit each other just like stars and planets. The strange relativistic effects only become important REALLY close to the black hole. So close that, if two black holes were regular stars of the same mass, they would be touching long before they got close enough.

Answer 3

Yes.

Black holes attract other matter (including other black holes) using their gravitational pull.

Whether there are any close enough to each other at the moment to be attracting each other is unknown - I don't believe any have been observed. There are observations of stars which are apparently rotating around black holes.

Answer 4

Black holes have exactly the same gravitational effects as any other large body that exhibits a gravitational field. In fact, other than the black hole does not emit any light (you can't see it) you cannot tell the difference. It acts just like any star with a large gravitational field.

Answer 5

If a black hole could exist it would act like any other celestial body.
If some way two of them merged they would simply absorb each other and form a more massive black hole.
In the case of other celestial bodies,a collision would be a catastrophic event that would destroy them both.

Answer 6

There is a black in the center of each galaxy. There is at present 2 galaxy colliding.

Answer 7

Yes, the black hole with the most gravitational pull would engulf the black hole with less gravitational pull, creating an even larger black hole.

Answer 8

they are too far away for now . wait two billion years later when andromeda clashes with our milky way , we'll shall see what happens .