36 Answers

  1. There is one interesting hypothesis. If accurate calculations of the mass of the observable universe show that its size is less than the gravitational radius, then it turns out that we live inside the event horizon of a black hole, and this event horizon is the boundary of our Universe. If it is now absorbing some external object, then this explains its expansion, but the event horizon itself logically explains the impossibility of going beyond it. Then, even with the Big Bang, all questions are removed – this was the moment when our world collapsed and spun off from the parent universe behind the cover of the event horizon. I think it's beautiful. I am ready to listen to comments from the point of view of existing physical theories, and I ask flat-earthers and RENTV viewers not to worry.

  2. There is no need to realize the infinity of the universe. More precisely, the universe is boundless, but not infinite. It's like the surface of an inflating sphere.

    And the “wall” is inaccessible to our eyes. The question – what is behind it-loses all meaning.

    We can never see what's in the area beyond the Hubble sphere, right. how objects there are moving away from us at superluminal speeds.

  3. Spatial infinity

    Imagine a “line with no beginning or end”. This is a circle. Now imagine that the three spatial coordinate axes are circles of infinitely large radius. And the radius itself is also part of an infinitely large circle. And so on ad infinitum.�

    Time infinity

    Cyclical, perpetual rotation.

    Infinite development

    Imagine a growing tree. Each branch has an infinite number of options for positioning itself in space until it grows, despite the limited area in which it can appear.

    The universal “tree” is always growing, new branches appear, and the structure becomes more complex.

  4. Once, when the night covered the heavens with its invisible epancha,

    the famous French philosopher Descartes, at the steps of the home staircase

    his sitter and the gloomy horizon with great attention

    a passerby approached him with a question:

    “Tell me, sage, how many stars are there in this sky?” “Scoundrel! —

    This one answered — ” No one can embrace the vast!”,

    with great fire uttered, the words had an effect on the passerby

    the desired action.

  5. Is it possible and how to realize the infinity of the universe?

    The thought of humanity daily proves that it can realize everything, and even that which is not there. Thinking and imagining – and you already see the infinite universe. But the same reflection always creates doubt, based on the scant knowledge of the Cosmos that we possess.

    The essence of the doubt: is the universe infinite? Yes or no? Justified

    no response yet. We need to work and raise such questions. 0ni are very useful.

  6. The infinity of the universe follows from the continuity of space.

    Each point in space has a neighborhood that consists of points in space, if you move from any point in space to a neighboring point, then it will again have a neighborhood consisting of points in space, etc.

  7. The task of science is just to study the world, not limited to everyday ideas. But in general it is not clear:

    1) can be infinite, just infinite. Just because you can't imagine something doesn't mean it doesn't exist. For example, try to imagine how your smartphone works (I'll tell you right away – I don't know all the details)

    2) It may be closed, but it may seem infinite. An analogy: you can travel as much as you want on the surface of the Earth and never find the wall

    3) Finally, most likely in my opinion, the universe is 42 light-years in size and continues to expand. Space-time itself is expanding. Outside of the universe, there is no space, so it is not even an extension, as such, because there is no EXTERNAL space. An analogy: you are traveling on a ship on a constantly overflowing sea. For you, the shore is something else, just incomprehensible not only to the imagination, but also impossible to touch-the ship goes only on water.

    All analogies are conditional and cannot be used to accurately describe the universe

  8. Purely emotionally, for the first time thinking about infinity and eternity is certainly difficult to understand and accept it….. It seems sometimes that you can go crazy ! But one day there comes a moment when suddenly consciousness begins to resent the possible finiteness of space and time ! Because they are infinite !

  9. How do I represent infinity? Simply. Type “Perpetual Calendar online” in the search, go to the site with such a calendar and enter the number of any year, month and day. Enter and you will see that this day exists and find out what day of the week will fall on the date you entered. Of course, in each specific case, some reasonable restriction on the number of years may be introduced, but believe me, this is a matter of technology. In principle, you can enter absolutely any year. Thus you will look into eternity)))

  10. The universe is not infinite. It's just that we are inside a three-dimensional world and we are this world itself and there is no physical end to the universe for us. But for a 4-dimensional being, our universe is quite finite and he sees other universes as well. But we can't, we are part of this universe and within it. It's like a two-dimensional drawn person on paper can exist only within a sheet of this paper and he can only see what is also on the surface of this paper, because he will see roughly speaking with the same drawn lines. Therefore, although the universe seems infinite to us, only because of the limitations of our nature, but scientists have already calculated that the universe cannot physically be infinite and it occupies a finite volume-see the benefits of Perelman's proof of the condition.

  11. I don't think it will be possible to realize it. Because there are no actual infinities in the real world. The infinity of anything is a mathematical abstraction that has no analogues in the real world.

    However, despite this, it is still possible to visually represent the infinity of the Universe geometrically, using reasoning by analogy. Our universe is a four-dimensional sphere that is constantly growing in size. At the same time, all the matter of the universe – all the fields, galaxies, and so on-is located as if on the surface of this four-dimensional sphere. This surface is the same wall, and there is nothing else besides the surface-wall, i.e. our space-time.

    In the figure below, I give a two-dimensional analogy. There is a circle with a radius equal to one. The circle grows, the diameter increases, the circle becomes more and more like a straight line, until finally, as it tends to infinity, it becomes a straight line.

    In the same way, you can imagine the universe inflating to infinity, as a flat four-dimensional surface-a wall, outside of which there is nothing. And even this “nothing” is also not there.

    All the matter of the universe is located on the surface-the wall.

  12. I can't understand it. Man, is finite. The finite cannot know the infinite. Take a thought. Nothing is faster than a thought. Let's say that scientists have found a star at a distance of one and a half trillion light-years. They showed me what it looks like. In a moment, you are already mentally there.

    Because thoughts have something to cling to. But in the case of infinity, thought falls into the abyss and has nothing to hold on to. It just disappears into this infinity.

    Man can neither know nor imagine ( in imagination) infinity.

    The “wall” is precisely the feverish clinging of human thought to at least some point, an object. Here is, say, a wall. What's behind it? Beyond it is infinity. Put up billions of billions of walls and it will still be nothing.

    Quantity has no power over infinity.

    For this reason, the number of atoms and elementary particles in space can only be discussed in limited volumes. What humanity has learned in the universe is limited precisely by human capabilities. And in this volume, you can try to count something. But in infinity? Nonsense.

  13. Even if the universe is finite, it has no wall. The simplest example is that the surface of the globe is, to a first approximation, a sphere. Its area is finite, but nowhere will you find the wall where the earth ends. In the case of our Universe, it is even easier – at a certain distance from the observer (I don't care where he is), the speed of expansion of space exceeds light, which means that even theoretically he will not be able to reach the boundaries of the Universe. Also, by the way, as well as that observer who is there, beyond the horizon, will never be able to come to visit us. And make sure there's no wall here, either.

  14. Maybe I'm wrong, but I believe that to realize the infinity of the universe, you must have a very strong psyche. Because not everyone can stand it. Personally, I tried several times. It worked. But he couldn't hold on to that consciousness. That is, I understand it with my mind, but I couldn't fully understand it. When you realize this, there is a very heavy feeling. It's hard to describe. It's hard to stand.

  15. The wall is our brain's perception of reality. It was driven into us by our parents and teachers (this is bad – good, you can – you can't).

    But if you put yourself in the center and try to expand the limits, you will get: room, house, street, city, country, Land, etc. We started flying in space not so long ago.

    Where did this knowledge come from? There is a Single Consciousness that is accessible only to those who want to learn something more from what we do not yet know. Where do ideas, insights, intuition, and premonitions come from?

    This is not the physical world. This is the Universe.

  16. I think the universe is made up of an infinite number of multi universes that intertwine with each other and flow into each other where one ends the other begins!!!

  17. It is not a fact that the universe is infinite, given that our universe was declared 13.4 billion years ago. years ago. There is no universe behind it – emptiness.

    There may be other universes.

  18. Well, how to say it… nothing… curvature of the space-time-universe. Even orthodox physicists already recognize this. Wormholes, black holes, for example. Understanding this is a bit difficult at first, but you can try to look at it from the point of view of quantum physics.

  19. Who says the universe has no boundaries?

    We observe two types of boundaries of our universe, the event horizon of black holes, we will never look beyond it, and the horizon of relic radiation, we will also never look beyond it.

    Therefore, you can only build theories about what is beyond these horizons, but these theories will never be confirmed by experiment.

    Unless we find multiple sources of relic radiation, just as we observe multiple black holes.

    Then we can talk about a closed universe, which has many sinks and many sources that connect these sets, but again we will never know what is beyond these boundaries, because these are event horizons.

    And if we can't observe something, then it is not given to us in sensations, which means that this is the limit of matter that we have and at each point in the universe it is different, but we will never get even to these points, let alone beyond the horizon.

    For the same reason, we do not observe other intelligent worlds, they are simply beyond the horizon of our period of existence (the horizon of time).

    Or you can sing the song ” I believe you of course, I saw it all myself – this is our secret.”

  20. The universe is not limited by space, but by the laws that shape it. Naturally, there are no physical walls, but there are other “walls” of laws. For example, the speed of light or the charge of an electron. This is the limit beyond which it is impossible to go.

  21. It is easier for me to imagine infinity when going deeper into Matter, when each open particle can be divided into even smaller ones. The infinity of this process is less questionable to me than imagining an outer infinity.�

    You can also imagine that our universe is an atom of some Mega-world. Accordingly, the atoms of our world are also someone's universes. And the atoms of those worlds, also someone else's universes. And so on ad infinitum.

    By the way, the word universe is plural, but the word cosmos is not. So maybe we should talk not about the infinity of the universe, but about the infinity of the Cosmos?�

    And if you delve into the meaning of the word cosmos, you will get “to comprehend”. That is, you need to comprehend infinity for the development of the mind. Perhaps the ancients, who left us this task, meant that this very understanding will be infinite, which is impossible in the framework of earthly life. So life itself is infinite

  22. There is a visible universe, its boundary is 46 billion light-years away from us(a lot,right?), so what is beyond this boundary, we will never know or see, because the space beyond this boundary is expanding faster than the speed of light and photons of light from there will never reach us)

  23. There can't be any walls, of course. The universe is matter located in space. Which is not emptiness, nothing, otherwise material objects would stick together, not separated by anything. It is reasonable to assume that the space is filled, for example, with conditional coordinates. Virtual points that contain information. Material objects interact with this information, and possibly are formed from it.

    In such a picture of the world, we see both the beginning of everything and the end. The edge of the universe is where information ends. Information points are running out

  24. It is easier to imagine a closed circle, inside which the celestial bodies rotate in their orbits.Everything we see is included in this circle. We can't see and understand what's behind the circle yet. Clues lie ahead.And over time, a lot of things will become clear to us. In the meantime, it is impossible to imagine infinity.

  25. I think I've already written a similar question. Let's think about it. Here the fundamental concepts are “universe”and ” infinity”. “The universe” is stupidly simple. This is the world that we see, the world that we can (well, we think so) explain by our invented laws. So be it. Infinity is an inexplicable substance. There are many definitions in philosophy, all of them are equivalent – they do not explain ANYTHING. There is only one prerogative here – everyone understands how they want. I chose this one – infinity is that of which each point is an ABSOLUTE similarity to any other. In any case, this does not logically contradict the ontological point of view. (as well as THAT and quantum physics). I don't care about them, of course. I should probably get back to the question. There are several theories of the universe. None of them will answer you. My answer is that the universe is not infinite. And it cannot be infinite a priori, since all our theories determine its beginning (they argue about the end). The universe is a locally defined quantity, it is not infinite, it is naturally defined. The fact is that there are many models that meet these parameters. And we will never be able to say exactly which one is correct. Then why think about it? I have my own theory, which does not contradict all of these. but its difference is that I consider all of our science to be fiction . (these are small things). Yes, the universe is finite(everyone agrees). What's next? According to my theory, pure space. (the book “The theory of everything that is not”). and the “scientists” just don't know what to say about it.

  26. this is realized in meditation

    there is no other way

    all other ways appeal to your imagination

    meditation helps you see everything as it is including the indescribable infinity

  27. A question of philosophy? We'll mix it with physics and help you understand it.
    The most fundamental law of physics on which the entire universe is built is Coulomb's law. And the laws of moving charges that continue it.
    The universe was created by the decay of one parent charge into many daughter charges, which eventually decayed to atoms.
    It's like an introduction. Further, according to the law of moving charges and charges at rest, all elements repel each other and create, no matter how paradoxical it may sound, a magnetic field of attraction. Creating galaxies, orbiting systems, and chemical elements.
    So the universe born as a result of the Big Bang is an expanding bubble of charges (protons, protoplanets, etc.)
    We are being material, that is, consisting of these charges (chemical elements) like a fish in water, we can sense, contact and move ( on spaceships) only in those places where these charges are present. (Like water for fish)
    At the edge of this universe there is no wall, but there are no charges, there is no electromagnetic interaction, and therefore there is no possibility of repelling for some reason, while when trying to escape from it, it will attract back. Like a fish can't jump out of water.
    I hope it helped my philosophical thinking.

  28. The universe is finite, because the universe has a beginning…the beginning of creation.The universe is expanding with acceleration -this is an established scientific fact and proof that it is finite. Before the universe, there was nothing, no space, no time,no matter, except The Supreme Creator,the Creator created the universe out of nothing,the Creator created all living beings, including humans,the Creator in the universe established the values of fundamental constants,established physical laws,established harmony and order in everything.

    The Supreme Creator is one,one(one of a kind)He does not need anything, (it is we all people, all living beings, the universe, matter that need the Creator) He did not give birth, (the Creator has neither a son nor a daughter ,it is natural for humans and animals to give birth to a child)He is not born, (the Creator has no mother, no father ,no parents, no wife,no relatives) It doesn't consist of parts, It is outside of time, outside of space, outside of matter,there is no equal to It,there is no one like It(that is, whatever image comes to mind: a bearded grandfather, a young man, idols,statues… it is not the Creator,the human mind can never know the essence of the Creator,cannot imagine the image of the Creator)

  29. The only being in the universe who freely uses the term Infinity, often without even understanding the meaning and fullness of the term.Man is the most real infinity,because he is Godlike! And it feels its Creator!

  30. It is unlikely that the modern scientific world can answer these questions. New facts and phenomena are learned.One theory refutes another, and the human mind can never fathom the mysteries of the universe.There is only one reliable answer.All this was created by the Higher Mind. God created it.

  31. The universe is absolutely finite in time and space. But it is a form of the existence of matter,or rather one of an infinite number of forms. It is given to mankind to contemplate infinite and eternal matter precisely in the form of our finite universe. But there are other worlds..

  32. all that I have read here is the thoughts of earthlings, which contain rules, unconfirmed knowledge about space outside our system, all calculations about distances, time and speeds are relative to the planet Earth.
    o one can prove that in the middle or on the outskirts of our galaxy or in neighboring Andromeda, our laws lose their meaning. Everything we know is exclusively about our planet. The whole universe is built on the principle of a cell, which means that everything has boundaries.

  33. And I would draw an analogy with the Earth-earlier it was believed that the Earth is flat and it was assumed that it is finite, but it turned out that if you move along the plane of the Earth in one melting, then you will return to the same point from which you started moving, i.e. it seems that the surface of the Earth is two-dimensional, but it turns out to be three-dimensional, just like with the Universe, I am convinced that if you move in the same direction in the universe, then you will return to the same point from which you started moving, i.e. we perceive the universe as three-dimensional, but it is four-dimensional and finite. Moreover, I assume that the universe can be represented as a ball turned inside out, the entire surface of which is concentrated at one point, then, moving inside the ball turned inside out, passing through the point that was the surface of the ball, we get not outside the ball, but in the diametrically opposite point of this ball. Similarly, with the Earth's plane, if we represent the Earth's surface as a circle, where the edges of the circle are closed at a single point, then this circle will be in the form of a sphere, which is what the Earth's surface is. If you imagine that the surface of the Earth is an inflating balloon, the mass of which does not change, but the distance between points and particles of the surface increases, the balloon of our Universe, turned inside out, also inflates, the mass of which does not change, but the distance increases.

  34. The universe is not infinite, since material objects cannot be infinite. The space beyond the universe is infinite, since it is immaterial. We can assume that the space beyond the universe is an absolute vacuum. In an absolute vacuum, there are no particles, but there are always fields that have zero average values. Quantum fluctuations of fields, or the action of an external field on these fields, can give rise to particles, as they receive energy. In addition to quantum fluctuations, unstable fields, such as electromagnetic and gravitational fields, receive energy according to the uncertainty principle, according to which, in an indefinite period of time, the field has an indefinite energy value. Quantum fluctuations of the electromagnetic field can give rise to electron positron pairs, which, when annihilated, can form a quark-antiquark pair, which, with sufficient energy, pulls several more quark-antiquark pairs out of the vacuum (the action of an external field) .

  35. The infinity of the Universe is very difficult for us to realize, since we cannot observe it from the outside or for those who move very slowly in it,since even large scarlets are not very capable of helping in this matter.When you drive at high speed for a long time, then you overcome large spaces…If there is a substance,then there must be a space where it can exist…

  36. There is such a way. Imagine that the universe is finite, but every moment it increases so fast that no other process can keep up with this process. The expansion rate of the universe exceeds that of any individual objects that make up the universe.�

    Let's conduct a thought experiment. Somehow you find yourself at the edge of the universe, beyond which there is absolutely nothing (no matter, no space). You don't even have time to think, you don't have time to feel that you have reached the edge of the universe, as it will increase by a gigantic amount. In the shortest period of time, you will be thrown a huge distance from its edge, and no matter how fast you move, in each subsequent moment you will fall further and further behind it.�

    Thus, for a person, the universe can be finite in theory, but infinite in practice.

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