Too many people are curious and want to know what the edge of the universe is like, as an ordinary person who is insignificant among all sentient beings, I am also very curious, and even think, I am standing at the edge of the universe, is it another step outside and it will be annihilated? This problem is really too much beyond our understanding.
Nevertheless, it still does not prevent me from being extremely interested in this topic, and I very much want to share everything I think with friends who have common interests, the following is my confusion and thinking process, and I eagerly look forward to friends with common interests to discuss and advise together.
At present, we see all kinds of popular science articles, wrapped up in objective, subjective views on the edge of the universe, there is no clear answer, because we humans do not currently have the corresponding knowledge reserves to solve this problem, thinking and thinking, suddenly a thought panic appeared in my mind, it seems that the "answer" of the painstaking meditation is within reach, and it seems that there is no attention, and the looming thought suddenly slips away again, and in a quiet afternoon of years, it suddenly becomes clear.
This idea is, in the end what is "being" and what is "nothing", in our ordinary people's understanding, there is, that is, there is one thing (matter) that is not empty, then "emptiness" is nothing, but corresponding to the universe, the boundless universe, "emptiness" is nothing? So why is there such a big "emptiness", is it really an endless "emptiness"? For example, what we do on earth, usually say "there is no space", indicating that "emptiness" is also limited, if the universe is boundless emptiness, where does such a large and incomprehensible emptiness come from, and who created it? Is it that it already exists? Is it "empty", "empty", "empty", endless "empty"? It seems that the existence of an endless "emptiness" is also extremely impossible.
And if it is not emptiness, it is not an infinite emptiness, then what should fill this emptiness? If the universe has a margin, beyond that world, there is no "emptiness" that must be filled with things, and what should it be? Is it substance? Since it is matter, it is impossible to be boundless, it needs to be filled with the same boundless material, even if it is gas, nebula, dust, dark matter, but can it really be boundless? Where are so many substances, all of them, all of them, thinking like this, do you think that "emptiness" and "reality" seem to be impossible, is there a third state? No, therefore, until our cognition is clear about "being" and "nothing", it is absolutely impossible to understand what the margins of the universe are, and we may never be able to define the absolute "nothing" and the absolute "being".
In addition to the existence of space, we can not define, suddenly, we will find that we can not define, there is also the "beginning and end of time", as we all know, the word universe, is containing two concepts of time and space, then time and space, we can not understand its "up" and "stop", the current big bang theory of the universe makes many people seem to understand the origin of the state of the universe, but it is completely unexplained, what was before the Big Bang? Where does the singularity come from? If we try to explain this problem, we will find that our thinking is once again stuck in a dead loop, a bit like whether there is a chicken or an egg first? If the universe is born and dies, then who was it before birth, and who is it after death? Is there anything else in the back? If not in the back, where did the previous singularity come from? If there is no later, where is so much matter, energy? Disappear out of thin air? Or is it a loop, so where does this loop come from? Who made this cycle in the first place, was it accidental that it designed itself into a loop?
If the above questions are also the process of everyone's thinking, the final conclusion is that the problem of the "edge" and "beginning and end" of the universe is a paradox at the current level of human cognition, and even, it may make people wonder, is it everything created by God? But the paradox continues, where did God come from? Could it be that God suddenly appeared and was omnipotent? Will God die? Wait, wait, we've been spinning in circles in one place, and it seems, we'll never get out.