Can a "near-by" black hole affect the shape of another black hole. Hello, My name is Edward Solomon and I am curious to know what would happen in the following scenario. Let us assume that we have two Black Holes, A and B. Both Black Holes have the same approximate mass and are not rotating. As they are non-rotating they are perfect spheres. If the black holes are on trajectories that will bring them "close" together (but not collide) can the shape of the event horizons be affected? Allow me to put some numbers up. Lets say we have two black holes of about 10 solar masses each. Doing the math in my head that would give us two black holes at around 30km in radius. Let us place the centers of the black holes 120 km apart. If the black holes still retain their perfect spherical shapes at this extremely close distance the surfaces of both (the event horizon) we be 60 km from one another. However my intuition tells me that at this close distance they would not be perfectly spherical. The gravitational pull would "weaken" the other between the distance that separates them. I believe that this would change the shape of the event horizon in a manner that would be analogous to a 2-D crescent moon shape. It would appear as a sphere with a dent in it, with the dent shaped like a parabolic cone. Also if these black holes are not on a trajectory to collide they may even cause each other to rotate, with the angular acceleration increasing as the distance between the black holes decreases. This rotation would also affect the shape of the black holes. Another curious thing to note is that if this parabolic dent could exist as I described, could the black holes be brought close enough to temporarily expose their singularities, without ever having to merge/collide with each other? If so, we may be able to replicate this in labs in the near future. And the most interesting question, if one were to observe the formation and evolution of this parabolic dent, would the volume that previously occupied this dent be "pushed" even further into the black hole? If so, would this cause the rest of the surface to bulge? How would rotating surface react to such a parabolic dent? If the volume is not pushed closer to the singularity, could any sort of energy/matter be expected to emerge from it, come back into existence to the observer? If the black holes were rotating in a stable orbit around each other, could they be expected to eject enough energy/matter that would form a new center of mass at the gravitational midpoint between black holes A and B and merge all three masses into one black hole? An interesting affect of them rotating and orbiting around each other is that the "dent" would change position on the surface of both black holes, creating a sort of "volume storm." I apologize in advance is this is a "stupid thread" and will refrain from future postings.