an item of infinite mass would have to exist in a 'non time existent' dimension. As with black holes dragging time in, the decay or release of energy and matter from the reverse process would emit time. this would make time a kind of dimensional radiation. If there is a large amount of dark matter in the universe it would exist in a static dimension 'invisible' to us against the backdrop of time. Is it possible we are just the visible flotsam of a much larger more comprehensive dimension not bound by the laws of time?