Where Is The Centre Of The Universe?
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- Опубликовано: 13 сен 2024
- If you wanted to travel to the centre of the universe, which direction should you head off in? Would you find the origins of the big bang there, or does such a place even exist? In this video we explain what an expanding universe entails for our place in the universe and the importance of a little perspective.
Sources and additional reading:
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Music:
"At Rest"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
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Really good quality content, but I think you might get to good places if you keep doing these kind of quality animations and videos.
Thanks!
@@SmartbyDesign come back!!
@@SmartbyDesign we miss you.
Why is this channel quiet lately! :(
I know, I've just stumbled across it and I'm loving the content.
Man I'm disappointed in myself for not finding your content sooner...and it's a fucking travesty that a video like this only has 3k views
But... a balloon has a center
Mandragora Ouroboros where is it?
I'm no astrophysicist. Even from my limited understanding, it seems like the answer is more like, "we don't know, because we don't know where the edges are"
Mandragora Ouroboros your English is way better than my ability to speak any other languages, certainly! I've read Mr Hawking, but it's been 15 - 20 years now, so maybe time for a revisit, thanks :: thanks ::
The "inflating space" hypothesis interests me, but I'm not as convinced that it's "the final answer" to explain red shift as mainstream cosmologists would like me to be (not that they care, of course).
In any event, IIRC, the red shift indicates galaxies are moving away from one another faster than the speed of light. Therefore, the idea of traveling fast enough to wrap around our universe and return to where one began is an impossible speculation
Ozymandias Mandragora Ourobor yes, that's the hypothesis, I'm just more skeptical than others.
Now when someone figures out how to travel 1000x light speed, then I guess we'll see what's real
@@MarcillaSmith to answer your original comment, there is a very simple visualization you can make in your head.
Imagine you are sitting on a chair in a cubic room, and there is another chair right in front of you. The room is getting bigger; as in, everything is expanding. The chair in front of you will seem to be getting away from you, because there is now more and more space between you and the chair. Same goes for the walls and the floor. (You will start to levitate but to keep it simple, lets suppose that everything is obeying gravity.)
Since everything is getting away from you, it would seem that you are the center. But when you stand up and go sit in the other chair, it will seem like you are again the center.
Now to understand the big bang, lets imagine the opposite: the room is shrinking. (Keep in mind that there is nothing outside the room, pure abyss and nothingness.) Everything will be so close to each other the chairs will touch eachother and smashed and crushed as the room, the floor and ceiling are shrinking and shrinking. Eventually, it will reach a singular point which holds a lot of energy.
Now, we look at what happened before the big bang. Could be a lot of things but i'll talk about the 2 most important ones in my opinion (or at least most popular).
The universe is nothing but a single condensed point in nothingness. Let us take a look at the past of the big bang. It could be that it just popped into existance, or maybe just was there. (You cant say eternity or for ever because there was NO time back then, so you cannot even try to incorporate any form of duration. Imagine the universe being a simple "image" of a point, a timeless point that expanded violently and suddenly (even suddenly seem to be the wrong word to use here). The other theory which i personnaly prefer is the big bounce theory:
The universe keeps on expanding until some kind of energy that makes it expand runs out, and then, thanks to gravity, everything starts to get closer together, until, it reaches a point where everything is soo close and rotating and moving so fast everything heats up, energy is building up and the universe comes back to how it started, another condensed point before expanding again and the cycle continues. I'll end it here.
@@Old_Salt If everything in the room is expanding, then in relative terms, nothing is expanding
Whenever i see the balloon reference it makes me wonder if its exactly like that.Wheras all space we see is just the surface.That we simply lack the senses to see the inner dimension of the universe.Blackholes being ever so tiny pinholes exposing the insides.I think understanding blackholes will ultimately bridge our understanding of the universe.
Black holes are literally plot holes in our story.
I think that the answer depends on the shape of the universe and weather it's infinite or has edges, both of which we don't know. If the universe is an expanding 3D sphere (flat in 4D), yes, it does have a geometric center. If the universe is a closed hypersphere shell (the balloon example) it has a center in 4D, but it's unreachable from the regular 3D space (the galaxies only exist in the shell of the balloon, but there's some higher dimension space inside).
The concept of the universe having no center only makes sense if you assume that the universe is open and infinite, but how can the universe expand from a single point into infinite in a finite amount of time? And how could we even know that? We can know that, if the universe has edges, it's beyong our observable reach, but we can't be sure that it doesn't has edges.
Ive been binge watching through so many of the videos on this channel. Amazing work!
Love it. Way to inflate our egos like the balloon universe XD
Just recommended to me - watched a dozen videos. Subscribed! Great stuff!
Smart by design:"This isn't like a normal bomb, it's the expansion of space itself"
Me:" *SPACE BOMB* "
dots on balloon located on curved 2d space, but balloon have center, so center of universe located outside of 3d space?
The point from which the big bang occurred is the possible center of the universe, but we are just unable to pinpoint it, that's all. Possible because we don't know if there is an actual end of the universe which is moving away from the center. If there isn't any end of the universe then the center is practically everywhere.
The center is everywhere because everywhere has always been here. It was only smaller. Think of a room that is expanding, it has furniture that is getting further away from each other. Even the squared floor tiles are expandjng and more and more space is getting created by the second. There is no center, as in, no point, nor space, nor position in which you can objectively NOT trace it back to the big bang. The big bang happened everywhere because everywhere has resulted from the big bang. There is no center.
@Ozymandias Mandragora Ourobor well to start off, i personnaly cannot explain anything. I am just sharing my knownledge. But to answer your question about galaxies moving faster away from us the farther they are, this could be attributed to dark energy, which is a possible cause for the accelerated expansion of the universe.
For the room analogy, it might show expansion and perspective but i agree that i wouldn't be able to show the concept of center.
The universe didn't come out of a big bang. It is to complex not to have a designer. God made the universe.
The Ballon analogy doesn't make sense....what about the galaxies inside the balloon ? They all can't be moving away at the same rate....and plus there is blue shifting galaxies as well....how would you map them on ghe Ballon if everything is moving away.....if you dont have a clear cut answer that is ok....its what science is about, but don't make up analogy to fit where a real answer cant....just say "we don't know.....yet"
It's all a guess... and how many scientists you can get to agree with your guess. For example, if you believe in he multiverse, then the largest item you have listed is actually extremely small, as there are infinite multiverses... which makes the largest thing out there is the first item on the list multiplied by infinity.
If you explained like balloon expansion theory, and we are the center of the universe of everywhere because everything is away from you. Then, why are our milky way galaxy colliding with Andromeda galaxy in coming 2.5 million years? Is that everything is expanding away from us like balloon theory? Or wrong? Or Big Bang theory was wrong? Or multiverse collide each other? Or everything comes from nothing like matter-antimatter diluted apart?
My thinking is: there are two 'forces' at work, one is the expansion and the other is gravity. Because of gravity, the expansion path of the objects isn't linear. If objects are so close that gravitational pull is stronger than the expansion, collisions happen.
Ton Kroese My knowledge to the space and time is gravity behaves to bending the time and space. If you explain like this, gravity to 2 different millions of light years apart galaxies are nothing to do with it. Because these 2 galaxies are far away for gravitational pull each other. If you say like that gravitational pull the rate of colliding of 2 galaxies will be accelerating, but the rate of Andromeda galaxy coming toward us is constant now. It means that little or no gravitational pull of these 2 galaxies.
Mathmatically, surely all points in time and space are eternal and infinite, for they can be halved or doubled in size. Take the Max Planck length, is there any reason it can't be halved? Or the Universe, doubled in size, mathmatically speaking that is?
The plank length is just the smallest distance anything can move, which for me is really had to understand. Why can't it just move half of that? It has to travel a half plank length before a full one, which means things can travel a distance smaller than a plank length.
Sorry, I'm just confusing myself.
It represents the pixel size in the cosmological simulation
The problem with this is the universe is finite, as such there must be a central point that is equally as left from the edge as it is right.
If there is an edge, yes.
@@PennDraken scientists have stated the universe isn't infinite. Therefore there must be an edge to tte universe. Therefore this video doesn't answer it's own question.
What was around before the big bang? Empty space?
We are at the center as proven by the CMB date from the multi pole tool set used by Max Tegmark at MIT. Look it up.
Tell me what's your video editor?
This video fails to explain why we cannot locate the center
Last Upload 2 years ago. Are you still alive bro?
I watch these videos 1, for the information and 2, because the narrator has a sexy voice LOL.
/tp 0.0 128 0.0
ez
128Gigabytes lmao
uh no, thats the very central coordinate in a vanilla minecraft world, the 128 is for half of the maximum build height.
IF we were the center of the universe (keep an open mind for this) It would make sense why here is life, as this location has had matter in it for longer than any other place in reality
The universe correctly expands at about x4 speed of light if the universe expanded at les then the speed of light we could see everything but as it expands the area and speed that it expands increases exponentially+ I picture the universe as an expanding sphere and us being somewhere inside with a smaller sphere around us which wood be the observable universe But with some crazy math I don’t completely understand we can finger out somethings about quantum vibrations in space time showing us a lot about possible previous or esprit but once together universes which also brings the conclusion type #3 end of universe “The Big Crush” !
The speed of expansion is 68 km/s...
Here's my thought, not hindered by any scientific background.... The expansion isn't linear due to gravitational forces. The balloon metaphor is nice at first sight, but there's no surface in the universe. Objects are sent in all directions after the big bang because of gravity, not just in a linear way outwards. Mathematically there must be a center. If it started as an infinitesimal small object, can the shape be something else than a sphere? Or would gravity have twisted everything into a saddle shaped university? In my limited mind there must be a center, problem is that we will never know in which direction to look.
Second question: how much of the original matter isn't going outward as a result of the expansion? If we look side-wards, will we see more than up or downwards, as you might expect with the balloon metaphor?
One thing I know for sure though, I think I need a stiff drink.....
Well, we could find a direction to look, by looking at galaxies that have a comparatively blue or red-shifted absorption spectrum. Surely creating a study of comparing the absorption spectrum of many galaxies could allow us to determine a direction relative to us, in which the big bang occurred but not a point. however, if we could travel any distance at an instant we could make observations from other frames of reference and create a rough area of where the point of origin may have occured.
Scalar transporter?
A balloon has an exact center though.
What expanded ?
BCE and CE? Later.
First comment in a year 😮😢
2:41 - Can we take your liver then?
R u ok?
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@@Wonders_of_Reality wowww thank uu.. I didnt like the taking liver part though. Was horrible!
Pythons at their finest. Horrible, shocking black humour and intelligent philosophy.
@@Wonders_of_Reality oh thank u very much once again for sharing xD