answer:There is not one single Black Hole, but potentially many many. In general, astrophysicists do not disagree on black holes, but they may have different interpretations of the data related to one. And bear in mind, information about black holes is updated quite often, as it is found. Just last week there was an article on an object circling a black hole at a speed of 1/10th the speed of light, which is incredibly fast.