> What does it mean for a black hole to spin? In many ways, a spinning black hole is much like an ordinary mass spinning at the same rate. If frame dragging (a

> What does it mean for a black hole to spin? In many ways, a spinning black hole is much like an ordinary mass spinning at the same rate. If frame dragging (a prediction of general relativity) turns out to be observable, we should see black holes affecting the masses around them as a result of the spins of (a) the black hole and (b) the affected masses. http://en.wikipedia.org/wiki/Frame-dragging#Frame_dragging_effects http://en.wikipedia.org/wiki/Frame-dragging#Frame_dragging_e...