Ever take a long look at your hand, man?

Whoa.

[removed]

Why be snarky, it was a good question. Killing curiosity over here

If Infinity actually exists I don't think we'd even be able to understand what it means

Not all infinities are the same. The infinite numbers between 1 and 2 are not the same as the infinite numbers between 3 and 4, and they will never overlap.

But have you looked at the back of your hand......ON WEED?!

[removed]

I like these deep thinking questions …

Have you ever watched “The flash” well using that show for example and how they explain the multiverse is how I think the universe is . Thinking about the universe is so mind blowing because it seems so infinite with many possibilities , I feel once we can actually prove living human civilization in another plant and actually communicate with them then it’s going to be a whole different ball game !

What I have stated may not make sense to some but I tried my best to word it so it can make sense ….

Given infinite time we actually expect all particles in the universe eventually to spread out and collapse into nothingness, everything with structure and energy eventually pulled apart into flat uniform empty space.

The observable universe is actually relatively finite. We can only see, at best, objects that are a few dozen billion light years away from us now, but are rapidly receding away from us such that soon the light they emit will never reach us because the expansion of the universe means those galaxies are moving away from us faster than the speed of light.

So in theory maybe somewhere out in the non-observable universe, that is the universe outside of the realm of things we could ever possibly observe it's possible there are galaxies identical to ours, but within the observable universe that is basically impossible.

That is of course referring to matter in this universe. It's entirely possible that there are infinite parallel universes which could have exactly the same configuration as this one or be slightly different, but we have no way to observe those if they exist.

You have to make a few assumptions to get to "yes". Not only is the universe infinite, but so too is the proliferation of matter, the density and variety, etc. Everywhere has to have had the same amount of "when" too, and who knows how that works or whether the universe exists as a static infinity or a growing one. Our sphere of observation would indicate the former, but we can't really say what fraction of the universe, if it's anything other than infinite, we might see.

But if all of that holds true, then no matter how unlikely this exact configuration of not only matter but also events is to reoccur, it does so an infinite number of times. No matter what the number is, the one in however many trillions of trillions chance of it happening, the opportunity to do so remains "infinity", and that's what the whole expression about monkeys and type-writers means.

It's not really something do we do well with, conceptually. Our brains don't really do "infinity", it was at no point a factor in our evolution and trying to imagine it is probably only something widely attempted over the last two hundred years, we're not equipped to do it. The math makes sense, but the imagination can't follow that road. I mean, unless you're Einstein or Newton or some shit, seems like they did exactly that sort of thing.

You watched JMG's immortality vid today? Haha, I think given truly infinite time and assuming cosmic thermal equilibrium is literally the end of time, it would be easier to believe both than to try and debate/ argue/ prove/ disprove either over the other!

Well you couldn't see it if there was a weed on it, could you? Checkmate, theists!

The universe does not go for forever in terms of time, it goes for forever in terms of space.

The universe is expanding infinitely in the sense that everything is getting further and further apart from each other. Eventually, things will get so incredibly far apart that the space between each object will make it impossible for them to interact. Every star will go out and the universe will go dark, and realistically, nothing will ever happen again.

Many theorize that this will precede another big bang, but there is not enough solid evidence to support or disprove this.

No one can answer this. If they try and tell you they know they're a fool.

okay, if another big banghappens and will end in heath death and it continiues infinitely, be the same and everything will exist as it is today? or every bang will be different?

Huge difference between infinity and eternity.

I suspect that every bang is different. I further suspect that humans are rare.

I think perhaps questions that have no answer but require us to creatively postulate and ponder wonderous absurdity within a scientific - physics - maths framework... That's the stuff that's gonna blade runner all over our future!

It's actually quite possible that, due to quantum fluctuations, any conceivable universe will spontaneously come into existence. It's just unlikely.

Honestly I don't have a sure answer to that question. But I can guess.

Based soley on my own very limited knowledge, theoretically if the big bang happened over and over again infinite times, in a completely random fashion every time, you could eventually result in one where every particle ended up in the exact same place and in the exact same state, which could lead to the same nitrogen bonds forming, etc. and the events of this universe would perfectly repeat themselves.

We don't know. No one here knows. These are concepts we can't comprehend. A lot of what is happening here is VERY well educated science fiction.

Anyone who gives any other explanation beyond we don't know is really just taking a wildly educated guess.

We can't answer this question.

What about the digits of pi? They do not repeat yet they are infinite.

Well, this one dude called Stephen Hawking did some maths and had some things to say about this:

https://www.sciencealert.com/stephen-hawking-s-final-theory-about-our-universe-will-melt-your-brain

https://www.livescience.com/62073-stephen-hawking-multiverse-theory.html

Doesn't actually prove or disprove it, but he did try to answer the question

All circles are eternal. All circles are infinitely divisible. Not every circle overlaps. Time can be infinitely linear or infinitely circular.

Never thought of it that way, interesting point.

It makes sense just don't get what's your point.

Don't be so sensitive, my comment wasn't snarky at all.

[removed]

True.I think questions like these are meant for excitement. I think that trying to comprehend them is better than neglecting them as though they aren't even there.

Its fine to talk hypothetical but anyone who says they know should be disregarded

[removed]

Very smart physicists and mathematicians posit that even if the universe is very big and not even ‘infinite’, there may be multiple copies just like us out there right now.

I do think the Eternal Return is more probable than not. There can only be something rather than nothing. And ‘something’ repeats. Forever.

To counter those saying ‘Infinity need not overlap’. True. But universes are closed sets that operate via natural laws. They may vary universe-to-universe, but this fact means universes aren’t simply ‘random values’.

Yes, I’m certain it repeats. In fact, I’m hopeful to live this life over again. Or, perhaps on repeat, but with small variations.

I don’t think you quite really understood what I’ve stated , so my response to your question would just go over your head ….

[deleted]

If it is infinitely spatially extended, it either repeats simply, or it "never repeats"- but you can always find a repetition for any finite region. Since our awareness is finite, this means yes - it "repeats".

But we don't know if it is infinitely spatially extensive. We can only see a tiny part of it, as far as we can surmise. It "looks like it keeps going", outside the 50 billion light year sphere we're looking at right now.

Your answer got me thinking. You say "things will get so incredibly far apart that the space between each object will make it impossible for them to interact". Is there a theory that we are actually in one of those objects? Like, our universe as we know it was smaller and part of something else, that at some point drifted so far away that we just cannot interact with the rest of it. So something similar to multiverse theory just that it's not parallel or anything much different than one drifted away part.

But yours is not a response to his question

i bet you still in high school but once your frontal lobe fully develops after 25 then you’ll know how to understand that not every question has a right or wrong answer….if you can see the other comments left on this post then you can see everyone has different views on the question asked by OP

Hello u/EmbarrassedFriend693, your submission "If the universe goes for forever, will every event repeat itself? Or is it been happening?" has been removed from r/space because:

• Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

I perfectly know that the question cannot have a definite answer and we can only theorise, but your post didn't even try to answer to it and then you started passively-aggressively attacking anyone who pointed that out just like someone whose frontal lobe hasn't fully developed yet

You stated “Passively-aggressively attacking “ if you ever been to NYC then you would have a hard time socializing in this society because that’s basically our personality 😂 people have to stop being so soft about what random strangers say on the internet. But my apologies if I offended you . And also you stated i “didn’t even try to answer to it” well if you take a look at the other comments then nobody really answered with a direct answer. But hey bro this is space which involves people thinking like this since it’s just endless possibilities!! We are a grain of salt in the universe !

Alright, there's a bit to unpack here and I apologize if I explain something that doesn't need to be explained.

The digits of pie all repeat, and in fact, as near as we can tell, do so infinitely.
There are an infinite number of 9's in pie. There are an infinite number of 5's.

What they don't have is a pattern. And that's fine. No one said there had to be pattern. But any sequence of numbers, 123, 6845436, 666, whatever, will not only show up eventually, but if pie is truly infinite, will repeat an infinite number of times. Just not in a pattern.

And no one said it had to be a pattern, in fact, it would be weird if it was. Pie is not a pattern, but somewhere in there, or rather an infinite number of "somewhere's" in there, can be found every sequence of digits, of any length. I can rattle off a ten-thousand place number, it's in there, somewhere. Probably.

I'm not a mathematician, and pie might not follow the true rules of randomness that would otherwise govern something like this, so maybe there aren't a thousand 9's in a row in pie because of the rules of the equation from which it's derived, but there are definitely an infinite number of 9's.

You are saying earth (the variables that brought about earth, etc.) are a piece of the infinite universe, and so can be found in multiple places. I'm arguing that what set the earth in motion was not in fact a separate piece, but is the entire thing. If the moon had slightly more or less mass, the tides would have been different, if Jupiter was not exactly where it is, the meteors that created the moon would have impacted differently, if our neighboring stars had a different make up, the heavy elements necessary for life would not have been prevalent in this part of the galaxy, if our neighboring galaxy was drifting away instead of gravitationally locked with ours the spin of our galaxy would be altered and we may have been in the wrong part of space to gather the elements necessary... Earth is not one of an infinite number of unrelated 5s in an endless string of random digits, earth is a 5 in the 6728th position and any alteration anywhere along the string of digits alters every adjacent digit and propagates through the entire string. So in order to find a second earth, you would need an exact copy of the entire universe, you would need pi to repeat.

Ok, well, I think you're wrong about a lot of that.

A recreation of just the solar system would do. What Andromeda is doing, or any other galaxies, or hell, most of the milky way, is kind of irrelevant to the Earth. Nothing happening in one of the other spiral arms is making a difference here.

And it has nothing to do with pi. That's... I don't know where you're getting that. Pi is for the geometry of circles.

It's dead simple. The odds of recreating the entire solar system is 1 / an unimaginably huge number. Whatever that unimaginably huge number is, it still fits into infinity an infinite number of times. In an infinite universe, therefor, you get an infinite number of identical solar systems, be they earth's or literally any (every) other solar system.

This isn't my idea or conclusion, either; this is a generally accepted consequence of infinity. In a truly infinite universe, every event, no matter how improbable, HAS TO happen an infinite number of times. They can be separated by great distances of space and time, but they do happen, they never stop happening, they're infinite too.

Getting lost in the symbolism or the examples is, forgive me, kind of pointless. They're only value is in helping illustrate, and any flaws in those metaphors is kind of irrelevant to flaws in the actual nature of infinity. Pi is just that, relative to this conversation, an example, a way to explain how infinity works, it's not at all relevant otherwise.

Yes, our disagreement is that "an exact replica of earth" is possible without the exact universe we have.

I do not dispute that in an infinite universe anything that can happen has happened.

I just don't think that an exact replica is one of the things that can happen.

Let me put it this way, when does exact earth stop being exact? Light from 14 billion years ago is reaching the earth just now to inform our astronomers about the early universe, if that history is not a part of your 'copy' of earth, then your earth's astronomer is different than the ones here, your earth is different. So our observable universe is necessary to copy earth. But to copy our observable universe, everything that universe can observe is necessary, and so on.

You say Andromeda is irrelevant, but our history is filled with usages of Andromeda to inform ourselves what our galaxy may look like, the pull from our galaxy on Andromeda informs us of the mass of our galaxy, Andromeda contains several important stars we use as standard candles... So yes, I think life happened, humans probably happened, a moon, a 8/9 planet solar system happened, but not an exact replica.

I feel like you fundamentally misunderstand my point, which I should remind you isn't even my point but instead a generally accepted property of infinity. It's literally "an infinite number of monkeys on an infinite number of typewriters", this is the exact sort of thing that saying is about.

Nothing you've said is downright impossible, so straight up mathematically, as in "we can prove this with math" and not "this is a difference of equally credible opinions", that makes it eventual. Do the stars and shapes in the sky need to match? That's less probable, only, not impossible, so it STILL happens an infinite number of times. There are an infinite number of exactly-like-earth copies staring at an infinite number of identical-to-ours-skies because that's ONLY fantastically unlikely, not impossible, and given an infinite number of opportunities to happen, it will, according to the math, according to presently considered "proven" properties of infinity, happen an infinite number of times.

I am trying to be super clear here, we do not disagree, you are simply wrong. You can believe or not believe whatever you want, go nuts, but according to math, the people who study math, and the fundamental rules of probability (which is just math), this is how a genuinely infinite universe would work. None of this is opinion. These are the facts about infinity.

I'm not trying to be rude or dismissive or condescending here, but you're not arguing with me, you're arguing with the institution of "math", this is not what I say, this is what we find when we actually sit down to calculate how infinity works. I'm sorry, genuinely, but you're just wrong here.

I enjoy the debate, and fully admit I may be wrong. An infinite number of monkeys will create Shakespeare, but cannot produce a list of all typewritten lists that do not contain themselves as it is simply a paradox, not an improbability.

This is why I compare to pi. You can find an infinite number of 1s, infinite number of 14159s an infinite number of a million digits of pi, but it does not repeat. So if you say an exact earth is 15 digits long then yes you will find an infinite number of those digits (and every other combination of 15 digits). But you will not find anywhere that pi starts at 14159 runs any distance and then repeats 14159 and on exactly. How does this relate to the copy of earth? Earth has influenced and been influenced by everything within 14 billion light years, so 14 digits of pi let's say, you can certainly find an infinite number of those, but at the edge of that 14 billion years those influenced objects have been influencing things for 14 billion years as well. (I'll grant that we're probably getting into less than plank lengths so I'll admit I'm wrong here, but hear me out anyway) the continuous expansion of the sphere of influence encompasses the entire infinite universe in this way. So in order to create an exact copy, with the same history, same future, same influence you need a copy of the whole universe, the entire length of pi... And pi does not repeat, though it is infinite.

Anything less than an entire universe copy will eventually diverge from our earth (perhaps after the heat death of the universe and be really really really hard to notice but would be different none the less)

If you are talking about a multiverse, infinite big bangs, then clearly yes this happening once is proof it is possible, and would happen infinite more times.

If the size of your copy is infinite you need a new infinite universe to put it in.

The other point I'd like to raise is that not everything is random, so something like the same earth but I'm left handed may not be a possibility. The genetics of my parents may not be capable of creating left handed children, and the mutations that would create left handedness probably require several other changes to the world, plus the experiences I would have being left handed my entire life would shape me into a different person with different thoughts.

So the exact way the earth was assembled is a cause and effect relationship, without one you don't get the other. If you don't care what history the atoms of earth had before assembly then you can find infinite earths, but I argue that is not an exact copy.

Thank you for your thoughtful and respectful responses.

As far as I know this is pretty much correct. This is why the universe is often reserved to as the "observable universe." Everything outside of that is so far away that not even the light can reach us and allow us to observe it.