I'm not saying that the universe isn't expanding, however I just simply can not fathom how it is even remotely possible for this to be true, when I really think about it.
Imagine the following in your head
>your body is moving through space >you are the size of jupiter >travelling at light speed >eventually arrive to the exact point at which the universe is literally expanding and moving outwards(the edge of the universe) What the hell would I see? How can something expand if there is nothing behind it or outside of it? But then again, the universe cant be finite because in order for it to have an ending, there MUST be something on the other side. Not sure If I'm making sense, im half asleep and this has been messing with my head for awhile now.
The universe is homogenous. You will only ever see galaxies and galaxy clusters for as far as you go. There is no "edge." A finite universe is bounded only in higher dimensions or is complexly connected (3-manifold or whatever). Or the universe is infinite. Take your pick.
Ethan Myers
>take your pick
Whether its finite or infinite, None of them make sense. Imagine seeing the edge of the finite universe. Imagine seeing the edge of the infinite universe
Robert Wood
Tl;dr this
Xavier Myers
It doesn't matter what you can or can't userstand. It's a proven fact that the universe is expanding.
Jordan Martinez
I can't see or travel in 4 spatial dimensions so I don't need to worry about it. Get the idea of "edge" out of your head. There is no edge in the way you're thinking.
Jordan Gray
I clearly said I'm not saying it isn't. Did you read the post properly?
Connor Adams
"Galaxies are but specks of dust inside a raindrop that has hit the ground and is spreading out in all directions like a wave."
- user 2017
David Ortiz
That analogy inplies there is in fact something outside the raindrop
Brandon Bennett
Which there must be. Even nothing is a thing.
Jaxson Morris
The raindrop is the observable universe, not the entire universe.
Noah Morris
No. The observable universe is the limit of our telescopes. The observable universe is still relatively still and observable.
The rushing wave of creation that is still expanding is what I speak of. And when it is done expanding? Slow down. Stillness. Then a slow recede... and a big crunch.
I am telling you about the fundamental of the entirety of this universe.
Bentley Collins
The universe isn't expanding outwards into something else, thats what people don't get. As concepts of "space" doesn't apply outside the universe. Rather, the distance between any two points of the universe is simply getting bigger.
Ayden Adams
PREACH BROTHA
Camden Green
The real question is... Can you outrun God?
^-^
Thomas Parker
Top kek. Even if there were a finite matter in a void from a origin location (which there isn't), the speed of expansion of matter is beyond the escape velocities of gravity. Dark energy has all but ruled out a big crunch scenario.
Michael Ross
Which it would be. Gravity is relative to greater cosmic forces at work. We are defined by our central black holes in our galaxies....
Christopher Morris
For now....
Brody Lewis
So srs question here, how does time dilate for distant supernovas if it's the space that is expanding and not them moving?
Michael Carter
Slightly unrelated but I didn't think I was worth starting a thread about: Is there any difference between a universe of finite size, but with infinite divisions (such that you can keep subdividing measurements infinitely) and a universe with infinite size but a "smallest" subdivision?
Anthony Turner
It could be a finite point and perceived space is extending inwards. It's the only reasonable explanation.
Xavier Johnson
ugh, so many misconceptions.
>eventually arrive to the exact point at which the universe is literally expanding and moving outwards(the edge of the universe) The universe is not expanding at the "edges" it is expanding everywhere. Space itself is expanding. You won't notice this because gravity keeps all the matter in a galaxy from spreading out. The only way to see this is to look at objects very far away which aren't being significantly affected by your mass.
>How can something expand if there is nothing behind it or outside of it? Expansion refers to the points of space getting farther away from each other. It has nothing to do with anything "outside of space."
>But then again, the universe cant be finite because in order for it to have an ending, there MUST be something on the other side. No, that makes no sense. Also, the universe hypothetically could be finite without any borders, if it wraps back around on itself.
Space is not like things in space. Just because it's common to make an analogy between space and a blanket or whatever doesn't mean you should expect space to be like a blanket in every respect.
Elijah Davis
Imagine this more as stretching. Right now the space between galaxies is stretching so there is more space between them, thus they are getting more distant. It is like the galaxies are moving away from each other.
Velocity of these movements accelerates and since it is not real movement, but just space stretching, it can exceed speed of light. Which means these galaxies can't see eachother any more forever.
Point is if you travel too far somewhere, you might end up in complete darkness from which you'll never escape and noone will ever reach you because you are would be moving away from everything else at the speed greater than light.
Alexander Morgan
>end up in complete darkness from which you'll never escape and noone will ever reach you Feels very comfy tbqh.
Aaron Long
Why did the tiny point of the pre-Big Bang universe suddenly start expanding? And where did it come from?
Eli Gonzalez
Science, bitch, hell yeah!
Did I answer your question to a satisfactory degree?
Camden Rodriguez
>dat Illuminati ability
Holy fuck that's bonkers.
Camden Morales
>The observable universe is still relatively still and observable
No, it's expanding away from us in all directions. In just a few hundred billion years, it will be expanding away from us faster than the speed of light and "the observable universe" will consist of only our galaxy.
James Martin
No-one knows.
Jose Richardson
The word "universe" means everything. There is not one amount of volume that doesn't have some form of mass or energy occupying it regardless of the scale.
There is no end to it.
Colton Mitchell
>go into darkness with no return Would the """easiest""" way to do this be accelerating as close as possible to lightspeed and therefore live long enough to see the expansion of spacetime overtake the speed of light everywhere?
Matthew Moore
Kek arose in the primordial darkness and spawned the universe - with the goal that in 13.8 billion years some clumps of hydrogen with general intelligence will develop this website and dedicate numerals to him as sacrifice.
Jason Green
It would probably be easier to just jumping into a black hole. You'd get to see the Universe end, shortly before you did.
Anthony Reyes
Hadn't thought of that.
Zachary Baker
>expansion of spacetime overtake the speed of light everywhere Don't know if that really will happen "everywhere" as in Big Rip scenario. Like galaxy itself is tied with gravitation which can overcome the stretching.
Owen Clark
>None of them make sense You're an upright walking monkey whose entire evolution can be summarised by "how to kill things and put penis in vagina on the rocky planet where I live". Questions like "what happens beyond the visible universe?" or "what was there before spacetime?" are outside the realm of human intuition.
Nolan Gomez
What about the points in between those two points?
So basically no matter how far in the future and advanced we get, we'll never be able to leave the galaxy?
Xavier Butler
Distances where gravity is weaker than dark energy are all moving away from each other. The largest scale structures that are gravitationally bound are local groups. That's as far as we'll ever travel.
There are portions of the universe that we will never know about because they are receding away relative to us faster than the speed of light. the "faster than light laws' only apply to matter moving through space and not space itself. Space is not so much expanding at the "edges" like a bubble but more so expanding at every point. You can imagine this by representing 3d space as the 2d surface of a balloon. Imagine you glue pennies to the outside of this balloon and start to blow it up. The penny closest to you is receding away from you at a value I'll call x. the farther away you get from the original penny the faster you recede because every point between you is expanding. Distance and recession speed are directly proportional.
Because of this there is a certain distance away from us that we can never know about because the space itself as a summation between you and the unknown is expanding faster than the light is traveling towards us.
Modern physicists have excepted that we can never react that 'edge and we will never know what it looks like because not even our light can reach it. this is known as the observable universe.
Another aspect to your question could be answered by understanding the modern speculations of the shape of the universe. It has been proven to not be the 'bubble' that I get the feeling that you are imagining it as and would serve well to research if genuinely interested.
Gabriel Flores
All I've been able to conclude is that space wants to contract infinitely, so the default state of existence is the singularity, and it exists because I exist to observe it. I am god FTW
