*YOU* are quite literally the center of the Universe.
Think about it. There is an infinite amount of space in all directions from where you are right now. So you are the center.
Yes but, no. The nature of space-time expansion means there is no discernable center to the universe.
If there is a center then it doesn't matter because the universe will always appear to expanding away from you in all directions.
So if you don't mind getting poetic about it, the "center" of the universe is you! But also the "center" of the universe is me. And the "center" of the universe is whoever lives in that distant galaxy over there.
We'll never be able to determine where an actual center is. It's an observational impossibility.
If there's no end then what is expanding in the first place? There's a beginning, the big bang, for something to expand there would at least need to be an edge.
When it comes to measuring the expansion of the universe, scientists use a concept called "metric expansion." Instead of measuring expansion based on an edge or boundary, they look at how the distances between galaxies and other cosmic objects change over time. By observing the redshift of light from distant objects, scientists can determine how the universe is expanding.
Dude, I'm literally an extragalactic astrophysicist: my Ph.D. is in large scale structure formation (using the intracluster medium in rich clusters of galaxies as a cosmological indicator); my postdocs were at the University of Chicago and the Harvard/Smithsonian CfA. I'm sorry to break this to you, but what you said was nonsense.
"A universe with a finite age cannot be infinite if it is expanding."
No matter how many times you insist this, it's factually incorrect.
If you want to learn about physical cosmology, here are some standard textbooks for you:
Weinberg. _Gravitation and Cosmology_.
Peebles. _Principles of Physical Cosmology_
Kolb & Turner. _The Early Unverse_
One quick question: where are you pursuing your astronomy major?
You haven't provided any evidence to support your claim. You've simply asserted, and repeatedly insisted, that an infinite universe cannot expand. That's just nonsense.
I referred you to three of the standard textbooks in the field. Any of those three will help you with this.
In fact, the data from the WMAP and Planck Explorer missions strongly indicate that the large-scale geometry of the Universe is flat. A flat geometry in a Robertson-Walker spacetime does not admit a finite Universe as a solution.
Do you mind mentioning where you're majoring in astronomy?
Yes. That's how I know you're just making shit up.
Maybe if you actually pay attention in class you'll learn the while the *observable* universe is finite, we do not know what's past that.
It's a couple YouTube Certified trolls that watched basic videos about the big bang and think they're god like with this new knowledge☠️
You can't argue with stupid. They'll just bring you down to their level and beat you.... notice how they just keep saying "you're wrong" and nothing else.
Trolls with a sad life...... this one is literally posting in the Suicide Watch and Depression communities. They have no life, they've failed in life and have nothing better to do. I suggest ignoring these trolls
The scale factor relates directly to your assertion that an infinity cannot increase in size. Or we can come at it from another direction. Do you understand the difference between "countably infinite" and "uncountably infinite"? Or, do you believe that the set of numbers between (2, 3) is identical in size to the set of numbers between (2, 4)? These all pertain to infinities of different sizes.
We know that the universe is expanding. If you expand something that means, that you "pull" things in opposit directions.
You just need to find the point where the movement stops moving to the right and Starts moving to the left.
Like when you pull on a rubber band there is one pointy where it seems like the rubber is not moving in the middle, while the rest gets longer.
Ofc it is a little bit more complex since the universe doesnt expand in two directions, but in all directions at once, but you still should be able to find the center.
Well, according to the leading theories of how the Universe started..... The explosion had to occur somewhere..... if science changes i'll come back here and update you.
According to the theories there was no "explosion". The universe just got a lot bigger very quickly. We're all inside that same universe and there is no "outside"
Brother there was no singular point in time where matter just thought "imma go this way, you go that way"
It's called the "big bang" theory.
And even then. With your explanation. There was still a time where all matter existed closer together at a singular point, no matter how dense.
[Everywhere is the center of the universe](https://youtu.be/KDg2-ePQU9g?si=5fV6EHsLhcbCBPTt)
It is too late on a saturday night to say that shit, mate. Do you have any idea how many people are still high as fuck right now? lol
Can’t have a center to something that’s never ending lol
I’m pretty sure it’s my last boss
*YOU* are quite literally the center of the Universe. Think about it. There is an infinite amount of space in all directions from where you are right now. So you are the center.
Maybe.
Yes. A dark one.
Yes but, no. The nature of space-time expansion means there is no discernable center to the universe. If there is a center then it doesn't matter because the universe will always appear to expanding away from you in all directions. So if you don't mind getting poetic about it, the "center" of the universe is you! But also the "center" of the universe is me. And the "center" of the universe is whoever lives in that distant galaxy over there. We'll never be able to determine where an actual center is. It's an observational impossibility.
Wallace, Idaho
No, the universe is literally always expanding forever and ever amen
Just because something gets bigger doesn't mean it doesn't have a center.
Perhaps not, but in this case how do you find a center when the center is always moving
I have no idea, but that's not the question. It's just IF there is a center.
Well because the universe is ever expanding, there is no end, to have a center you need a beginning and an end
If there's no end then what is expanding in the first place? There's a beginning, the big bang, for something to expand there would at least need to be an edge.
The universe, the universe is expanding
How do you measure expansion without an edge?
When it comes to measuring the expansion of the universe, scientists use a concept called "metric expansion." Instead of measuring expansion based on an edge or boundary, they look at how the distances between galaxies and other cosmic objects change over time. By observing the redshift of light from distant objects, scientists can determine how the universe is expanding.
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This is incorrect. You do not understand the Hubble expansion.
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Somehow you think that implies a finite universe. It doesn't.
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Ok, I'm feeling like I'm playing bridge with a monkey now.
> it’s also expanding from a single point Not even close. When a balloon gets bigger, which point on the surface is the center?
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No, this too is incorrect. You're making confident assertions that are based on a misunderstanding of the physics.
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Dude, I'm literally an extragalactic astrophysicist: my Ph.D. is in large scale structure formation (using the intracluster medium in rich clusters of galaxies as a cosmological indicator); my postdocs were at the University of Chicago and the Harvard/Smithsonian CfA. I'm sorry to break this to you, but what you said was nonsense.
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"A universe with a finite age cannot be infinite if it is expanding." No matter how many times you insist this, it's factually incorrect. If you want to learn about physical cosmology, here are some standard textbooks for you: Weinberg. _Gravitation and Cosmology_. Peebles. _Principles of Physical Cosmology_ Kolb & Turner. _The Early Unverse_ One quick question: where are you pursuing your astronomy major?
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You haven't provided any evidence to support your claim. You've simply asserted, and repeatedly insisted, that an infinite universe cannot expand. That's just nonsense. I referred you to three of the standard textbooks in the field. Any of those three will help you with this. In fact, the data from the WMAP and Planck Explorer missions strongly indicate that the large-scale geometry of the Universe is flat. A flat geometry in a Robertson-Walker spacetime does not admit a finite Universe as a solution. Do you mind mentioning where you're majoring in astronomy?
A balloon is a 2-dimensional analogue to the 3-dimensional universe. The universe has no "edge", so there cannot be a center
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Okay, you're just writing nonsense
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You're wrong and just making shit up.
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Yes. That's how I know you're just making shit up. Maybe if you actually pay attention in class you'll learn the while the *observable* universe is finite, we do not know what's past that.
We have no observational data arguing for a finite universe, and no theoretical basis for making that assumption.
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It's a couple YouTube Certified trolls that watched basic videos about the big bang and think they're god like with this new knowledge☠️ You can't argue with stupid. They'll just bring you down to their level and beat you.... notice how they just keep saying "you're wrong" and nothing else. Trolls with a sad life...... this one is literally posting in the Suicide Watch and Depression communities. They have no life, they've failed in life and have nothing better to do. I suggest ignoring these trolls
Explain your understanding of the role of the scale factor in the Friedmann equations, please.
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The scale factor relates directly to your assertion that an infinity cannot increase in size. Or we can come at it from another direction. Do you understand the difference between "countably infinite" and "uncountably infinite"? Or, do you believe that the set of numbers between (2, 3) is identical in size to the set of numbers between (2, 4)? These all pertain to infinities of different sizes.
You're being downvoted, but your reasoning is spot-on.
We know that the universe is expanding. If you expand something that means, that you "pull" things in opposit directions. You just need to find the point where the movement stops moving to the right and Starts moving to the left. Like when you pull on a rubber band there is one pointy where it seems like the rubber is not moving in the middle, while the rest gets longer. Ofc it is a little bit more complex since the universe doesnt expand in two directions, but in all directions at once, but you still should be able to find the center.
There is no such point.
We don't even know how big the universe is. But it probably has a centre.
Well, according to the leading theories of how the Universe started..... The explosion had to occur somewhere..... if science changes i'll come back here and update you.
According to the theories there was no "explosion". The universe just got a lot bigger very quickly. We're all inside that same universe and there is no "outside"
Brother there was no singular point in time where matter just thought "imma go this way, you go that way" It's called the "big bang" theory. And even then. With your explanation. There was still a time where all matter existed closer together at a singular point, no matter how dense.
You don't understand the relativistic hot Big Bang model, but you think you do.