Well we have a relatively knowledgable idea of how they work. The only thing holding us back from how they work exactly is because no human can possibly go near it. A black hole is like when there is no more matter and shit is being sucked in. The closer you are to the center, the stronger the gravity is.  The outer ring in which you are in its gravitational pull is more of a concept than it is a physic, because it is so unstable and the rules of its pull are not consistant. When the power of a main sequence star comes to a halt because the only thing to burn left is iron, and it cant be disected into any more useful power source with just the power of a main sequence star, a supernova occurs and it will turn into a neutron star. A neutron star is so dense that a single teaspoon of any matter on it will weigh trillions and trillions of TONS. That is how much power is harnessed within them and is required to break down all the iron and create other elements. Now imagine if the star is big enough and a supernova occurs that is twice the size, the end result is a black hole, which has WAY more power than a neutron star. Just imagine how powerful these things are. They are so powerful and dense that all things you take for granted (weight, vision, light, time) are fucked with and will all be sucked into it. Thats right, it can suck light into it. Those things are nuts and I would love to learn more about them.
				
			 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		 
 
		