What is the spere surrounding a black hole is called?

Answer 1

The area surrounding a black hole is called the event horizon. Any object that gets caught in the event horizon will never return. All black holes have an event horizon. Black holes that have a charge and a spin, will generally have an inner horizon (coinciding to the outer horizon, the event horizon). At the inner horizon, matter is infinitely compressed and then sucked into the singularity. Along with black holes are white holes (otherwise known as "anti-black holes"). White holes are the exact opposite of a black hole, instead of sucking and trapping matter to where it is lost from the universe, white holes spew out matter and return it to the universe. Most scientists agree that white holes don't exist in our universe because they are very unstable. If the white hole was able to exist at all, it would last for only a couple of milliseconds before evaporating. The main thing between a black hole and a white hole is that a white hole is the black hole in the future. Inside the inner horizon, something bizarre happens. Matter enters one of two very narrow laser like beams. One beam goes against the black hole's spin and has positive energy and moves forward in time, but here's the real brainteaser, matter that enters the beam moving WITH the black hole's spin moves backwards in time and has negative energy. These two beams are shot out of the black hole at either end at nearly the speed of light. The black hole is basically a giant particle accelerator. Now I was correct. When the black hole shoots out the two beams, it becomes the white hole from the distant future. The two are the same. Now I know you just wanted the answer to the event horizon, but I just wanted to share a little more knowledge.