So, what is a black hole? Scientifically, it's kind of like this: a star dies and goes from one state to another. It kind of weakens, it can no longer push fuel from the inner part into the upper layers, and under their weight it starts to shrink. More precisely, the upper layers fall on the lower ones, and if this process stops at a certain stage, the star still shines, burns and lives for billions of years. Eventually it all burns up and falls even more towards the center. So there's no logic to it. That's something we're going to run into a lot – a logic that doesn't exist. There is no logic where it should be iron, i.e. firmly scientific.
If the black hole attracts everything to itself, as if swallows it, then the process must eventually lead to the fact that it must start the reverse process of restoration. So the question is: where is all that it attracted? Did she recycle it all and send it somewhere else, and unnoticed? That is why it is still a mystery of science, although there are already assumptions that it is some kind of a pipe that swallows from one side and throws out the recycled matter somewhere very far away, maybe in a parallel world. Parallel – in the sense that, perhaps, in the black hole electrons turn into protons, protons into antiprotons, and all substances, particles acquire "anti", i.e. opposite properties, so they are not visible for our senses and equipment, which we have created on the basis of "understanding".
Eventually it seems like the star is so compressed that it turns into a fantastic magnet that doesn't let anything out. It attracts everything and even sucks it in. Not even light can't escape from there, it's sucked in. So the boundary where it starts to happen, that is, the place where you can no longer escape from the attraction of the black hole, is called the event horizon. Even time is said to be different there. Speaking of time. How do you feel about its eternity? What about the eternity of space? And the eternity of matter? These are three important components of the world we live in. The world we can understand based on our senses. The world that these three-dimensional sensations "show" us. We can fantasize, compose, imagine, imagine, imagine, imagine, think about any other perceptions, dimensions, realities, but the reality for us will remain that which we can understand on the basis of our senses.