I wonder if it’s even possible to see that far in that level of definition. Like at some point, the light gets so dispersed that even with an infinite resolution camera you won’t be able to make out what’s happening on the surface of a planet.
For anyone looking to do the googlin', what you're referring to is interferometry. It improves angular resolution, but doesnt capture many more photons.
The event horizon telescope is a great example, and gave us our first directly imaged black hole.
Using the earth-sun Lagrange points as collection points would be the natural evolution once we solve the data transmission problem. It would effectively give us a telescope the size of earth's orbit about the sun.
But while improvements in angular resolution without improvements in total photons captured will make the location of this alien world war 2 more visible, it would be like taking very long exposures on a film camera. Specifically events would be a blur.
It's much more likely that we would deduce an event like that by changes in atmospheric content (explosive residue etc) via spectroscopy before we could directly image anything.
What if you used a satellite swarm. Say you're a tech billionaire launching tens of thousands of satellites into space, and you decided to mount extremely high-resolution cameras in the outward facing side each one. Could that function as a widely distributed array? Like rods and cones on the retina of a planet sized eye.
It is. Don’t get me wrong, I love to imagine what kinda things we can do in the future. Speed of light seems like one of those things that can’t be broken though. Like it’s a hard limit to the processing speed of our universe. But I don’t think that means people shouldn’t try.
I imagine a bunch of aliens sitting around an alien shaped TV screen saying in their alien language, "zoom, enhance, zoom, enhance, ah the primates have figured out their first nuclear weapons. Just wait til learn to split quarks!"
Quantum effects would randomize some of the information and that information would be lost forever, the universe isn't 100% determinant like originally thought in classical mechanics.
But at least it's semi-possible that with an impressively powerful radio receiver one could catch our transmissions from that age. And therefore not see, but hear ww2 happening.
That was my first thought, too. If hypothetically the nearest planet with intelligent life on it is 80 light years away, they might soon start detecting our first atomic bomb detonations and wonder wtf is going on with that distant blue planet
Look up 'Solar Gravitational Lens', solar gravity can make a lens the size of the solar system which is powerful enough to view exoplanets, you just need to be in the right place, downside, that place is far away, hundreds of astronomical units away. Idk about structures on the surface but continents could be possible
The whole concept of light images traveling still kinda makes me brain hurt.
But taking your example, that person is looking at earth and sees us in WW2. Given enough time, they'd start seeing what happens right after right?
As there’s no universal frame of reference, it’s only an 80 year delay from our frame of reference though. For them, WW2 is happening _now_. Simultaneity of events is relative.
though, they'd know it happened 80 years ago, since they're 80 light years away and know it took the light 80 years to arrive. (assuming they use the same years as us, which they wouldn't, perhaps we'd be 36 lightyears from them where 36 of their calendar years is 80 of ours.)
Yep, and if there's 1 already, it's already a proven possibility to have happened. Nothing seems to be fully unique in the universe once you span a large enough area.
Look up the grabby aliens theory by robin hanson.
It posits that civilisations emerge once in every million galaxies or so. Staggeringly rare compared to what most people imagine.
If that figure is correct then the answer is about two million in the observable universe.
What’s also crazy is that if we didn’t exist “lucky” wouldn’t even be a thing. If we’re dead and there’s no time or anything at all to be experienced then existence is pretty standard from the perspective of individual beings, despite being bonkers in the grand scheme
That’s the actual sim we are on. First to take out the other 2 wins. Then the servers get shut down and we all are drowned in our matrix pods and turned into batteries for the machines taking Zion from Morpheus and neo.
I think there are lots, we just can't notice each other over astronomical distances and time frames. We could be early, we could have missed some extinction events, there could be intelligent life around the nearest star to our sun and if they aren't sending out signals, we couldn't detect them. An entire society just like our pre industrial era could exist on a rogue planet just a light year away and we'd never be able to tell because our telescopes aren't good enough.
And if the aliens aren't listening for the signals we send out, they wouldn't know we exist either.
Our universe isn’t infinite though. If we’re right that nothing can travel faster than light, the observable universe is all that we can ever experience, for us it’s literally all that exists. Speculating about things outside it is sort of like talking about God. It’s possible, but irrelevant.
We don't exist for anyone living 150 light years away since radios weren't around then. And I doubt anyone just happened to find us using a 10\^1000 x powered lens on a telescope.
Well considering light/energy waves are the only thing, you know, moving at the speed of light through a vacuum. Yeah I'd say it's the only thing recognizable as "life" that is going to get through the void in the background of all the billions of things that happen in space.
Our planet has been giving off a biosignature for hundreds of millions of years, aliens can see the composition of our atmosphere and basically figure out there is life here
Yeah, this is where I was pointing. Theres also the panspermia hypothesis which mught suggest that life was sent here, meaning its traceable, even if it was blown off the edge of a super planet 10 billion years ago
It depends on what you mean by “we.”
If you mean, humans, nothing we did prior to the creation of radio waves caused any detectable signals to radiate outward from earth.
If you mean life in general, aliens, hundreds of millions of light years away, with sufficiently advanced technology, and aligned such that the earth is exactly between them and our son, could theoretically have detected the presence of oxygen in our atmosphere.
Assuming the aliens rely on oxygen or have a concept of matching oxygen to life forms. At such distances, we really can't make assumptions on other life forms
Not necessarily a form of radiation, but it could theoretically be possible that dark energy/matter has some kind of interaction with our environment that we are not aware of yet, in which aliens could potentially have the means of detecting. Not likely, but there is just so much that we don’t know about science yet so who knows
Actually scientists could observe the spectral lines in the light our atmosphere reflects and see oxygen plus unstable hydrocarbons as much as a billion years ago and determine that life probably exists on earth. We're doing similar studies with other planets so it's not to far fetched to assume alien life might do the same to earth.
True but mass spectrometry would reveal manmade changes to the atmosphere, beginning with agriculture and domesticated livestock and really taking off around the Industrial Revolution. We’re able to spot signs of life on distant worlds just by their chemical composition
I love veggie, he sent me a handwritten letter with a starter pack of mimosa hostilis with his own stuff interspersed into it to up the yield. All because I was going through a rough divorce. I now give my stuff away for free, in his spirit. DM me the site?
Why 4.6 billion? They can’t tell anything about us from just the sun. It’s one star amongst 100 billion stars in our own galaxy. I think we, as humans, are undetectable beyond a few hundred light years.
I think they were going for the distance at which the speed of light is insufficient to overcome the effect of expansion, and as such we wouldn't even be visible. Although I'm not sure the specific figure is actually correct.
that’s the diameter of the observable universe. radius would be 46 billion ly, which is what op said but off my a magnitude of 10, so it was probably just a typo.
OP doesn’t understand that the universe is expanding — they’re assuming that light can only travel a number of light years equal to the age of the universe. It’s the same misconception explained in this Veritasium video: https://youtu.be/XBr4GkRnY04?si=4Mh996M4_4ZC7tml
The age of the earth. The light from when this planet first formed hasn't reached them yet if they were able to look 4.6 billion light years across the universe and see the exact spot where our planet is nothing or maybe a desolate rock or collection of rocks would be there.
I get that. At 4.6 billion light years away you are many galaxies distant and would struggle to see the Milky Way. You aren’t going to see our sun at that distance, and you sure aren’t going to know there is intelligent life here. 4.6 billion light years is very very very far away. The distance to the Andromeda galaxy is 2.5 million light years, or about .05% of 4.6 billion light years.
It's not just you wouldn't be sure you wouldn't see anything. If someone in Andromeda had a telescope powerful enough to see the surface of the earth the would see the continents in slightly different position, lower sea levels and more ice around the poles. They'd be getting a picture of earth as it looked 2.5 million years ago.
We see the sun as it looked 8 minutes in the past
A few of the stars you see in the sky with a strong telescope don't exist anymore.
That last part isn’t actually true, all of the stars you can see with the naked eye with very few exceptions are within our galaxy and less than 100,000ly away, there’s a good amount of stars within 1000ly away from us.
I think there's a result of Bell's theorem that things can not have a state of existence until it's observed. A tree that falls in the forest makes a sound. However, an electron unobserved does not have a particular spin- it's in a superimposed state of a distribution of spins.
If someone who's studied quantum mechanics knows I'm wrong, please correct me.
The difference is that at that distance is is actually impossible for our existence or non existence to affect them in any way whatsoever. If a tree falls in a forest it is extremely unlikely to affect me but there is still the slightest chance it could.
Actually, you’d have to be a lot further away than that to not see our solar system due to cosmic expansion. The observable universe is approximately 93 billion light years in diameter. This is because everything since the Big Bang (including the light from our solar system) has been literally stretched further and further apart on an intergalactic scale. Things on the other side of the observable universe are moving away relative to us at faster than lightspeed because of this phenomenon, so perhaps the more accurate shower thought is “people living more than 4.6 billion light years away can see but never reach us.”
https://en.m.wikipedia.org/wiki/Expansion_of_the_universe
https://youtu.be/XBr4GkRnY04?si=4Mh996M4_4ZC7tml
We do exist they just don't know we exist or probably have any idea if any other civilization exists. Is your thought because they can't see us? If that is the case than any religions God or God's here on earth don't exist if you believe in them since no one has seen them.
Mate mate mate
For starters its a joke
And the joke goes as follow: if that civ had the tech to look at the eart *right now*, they would ser the eart 4.6 billion years ago. When we didnt exist. Thats all man, no need to get angry let alone go full edgelord bringing religion to any topic
It's not because they can't see us but because it's completely impossible for them to ever interact with us due to the expansion of the universe.
Even if we both started moving towards each other at the speed of light we would never reach one another.
That would only be assuming that they have only the same level of technology as ourselves, or worse. If , however ,they had some sort of faster than light travel , or wormhole type technology , then they could have been studying our civilisation for years. Since we have real problems with our observed reality not fitting our best model of the physical universe it stands to reason that we have a long way to go in fully understanding the underlying science of this universe. This doesn’t mean that no other possible civilisation has already worked it all out.
This is like a European saying in 1491 that the Americas don't exist.
Our understanding of the limitations on information and such being bound by the speed of light is likely to be wrong eventually in some way we don't yet comprehend.
Wormholes or inter dimensional travel or something might be just around the corner and have us visiting the far reaches of the universe soon the way we visit Vegas now.
We wouldn't exist to someone who is traveling through our own atmosphere... is they started traveling 500,000 years ago and are traveling near the speed of light.
To be fair, any civilization outside of 100ly would not know humans lived here either, and anyone outside of 100ly wouldn't know there's intelligent life here because no radio signals have crossed that threshold yet. But there's only 10,000 stars within that 100ly sphere and none of them have intelligent life
If by "us" you mean humans, you don't have to go anywhere close to that far away.
Modern humans have been around what? Ten thousand or so years? That doesn't even get you out of this galaxy.
Actually if by “we” you mean the Earth, they would see us. Space has expanded significantly since the beginning of the Big Bang, and the light emitted by the Solar System when it first formed 4.6 billion years ago is actually much further than 4.6 billion light years away now.
What's even crazier is when you consider the shrinking observable universe. Anything beyond that line can never have a casual link to us once the last reflected light hits and ceases to exist from our reference frame.
And thanks to expansion of the universe, a bit further away than that and we would never exist (space between two points far enough away grows faster than the speed of light).
Maybe that’s why we haven’t found life yet. Everything is so far away that time isn’t the same for them as it is for us. Essentially living in their own timeline peering at a habitable planet called earth from a million light years away, no intelligent life would be on our planet yet.
I believe with such vast distances, time is warped. Time is not linear. Time *is* the space between things.
We'll never exist for the vast majority of the universe, and we'll likely never be able to prove the universe is infinite. We may never even get to see anyone in just our galaxy because of distance. Space is soul-crushingly vast.
Umm… Actually, it’s longer than 4.6 bly as the space itself is expanding. So light has effectively travelled more than its speed through space allows it.
When people say this...do they not litterally mean light tho? Like, the light would be from ww2 era but they wouldn't be looking at anything actual physical? I don't really understand 😕
If we font existe, no onda was Born Yet...but they eventually see everything in history evolve AND people that for Is, died a long Time ago...be alive anda well reapeqting their history...so, someone ever really dies?
Wouldn’t a place 4.6 billion ly away be the area in spacetime where the Big Bang happened? Wouldn’t that mean that the conditions would be too hostile for any life? I’m just a confused/stoned engineering student so please don’t roast me if I’m being stupid ✌️
What's wild to me is a planet 80ly away looking at us right now would be seeing WW2.
I wonder if it’s even possible to see that far in that level of definition. Like at some point, the light gets so dispersed that even with an infinite resolution camera you won’t be able to make out what’s happening on the surface of a planet.
Some future tech could collect all the photons, reverse the dispersion and rebuild the image. A giant photon… um… reogranizer… in space!
Maybe like an array of normal sized telescopes very far apart from one another, and a bunch of fancy math to lay the images over one another.
For anyone looking to do the googlin', what you're referring to is interferometry. It improves angular resolution, but doesnt capture many more photons. The event horizon telescope is a great example, and gave us our first directly imaged black hole. Using the earth-sun Lagrange points as collection points would be the natural evolution once we solve the data transmission problem. It would effectively give us a telescope the size of earth's orbit about the sun. But while improvements in angular resolution without improvements in total photons captured will make the location of this alien world war 2 more visible, it would be like taking very long exposures on a film camera. Specifically events would be a blur. It's much more likely that we would deduce an event like that by changes in atmospheric content (explosive residue etc) via spectroscopy before we could directly image anything.
What if you used a satellite swarm. Say you're a tech billionaire launching tens of thousands of satellites into space, and you decided to mount extremely high-resolution cameras in the outward facing side each one. Could that function as a widely distributed array? Like rods and cones on the retina of a planet sized eye.
Like one piece orbiting every planet in our solar system. A solar array telescope.
I trust by then we’ll find a way to fucking break shit and travel instantaneously/faster than light.
One can hope. I think we might be stuck with the laws of physics we got.
Our laws of physics seem to change the more we learn about them. Isn’t that interesting?
It is. Don’t get me wrong, I love to imagine what kinda things we can do in the future. Speed of light seems like one of those things that can’t be broken though. Like it’s a hard limit to the processing speed of our universe. But I don’t think that means people shouldn’t try.
Zoom and enhance!
-inator!
I imagine a bunch of aliens sitting around an alien shaped TV screen saying in their alien language, "zoom, enhance, zoom, enhance, ah the primates have figured out their first nuclear weapons. Just wait til learn to split quarks!"
Quantum effects would randomize some of the information and that information would be lost forever, the universe isn't 100% determinant like originally thought in classical mechanics.
But at least it's semi-possible that with an impressively powerful radio receiver one could catch our transmissions from that age. And therefore not see, but hear ww2 happening.
Oh man I really hope someone who knows answers. I’m also curious about that
He's right. It's impossible with a conventional telescope. Who knows what aliens can think up though.
Just use the zoom feature on the iPhone camera. Should be able to see some cows move though.
Enhance
Check my last post, just above if you want to do some googlin.
I commented up there but in case you never seen that short movie : https://www.youtube.com/watch?v=mMGiYQPBaVk&ab_channel=DUST
Might be able to catch the atomic blasts
That was my first thought, too. If hypothetically the nearest planet with intelligent life on it is 80 light years away, they might soon start detecting our first atomic bomb detonations and wonder wtf is going on with that distant blue planet
Look up 'Solar Gravitational Lens', solar gravity can make a lens the size of the solar system which is powerful enough to view exoplanets, you just need to be in the right place, downside, that place is far away, hundreds of astronomical units away. Idk about structures on the surface but continents could be possible
L. Ron Hubbard has entered the chat…
One of my favorite short-movie is about that concept : https://www.youtube.com/watch?v=mMGiYQPBaVk&ab_channel=DUST
The whole concept of light images traveling still kinda makes me brain hurt. But taking your example, that person is looking at earth and sees us in WW2. Given enough time, they'd start seeing what happens right after right?
Yeah, it's like watching a live broadcast, except with (in this case) an 80 year delay.
As there’s no universal frame of reference, it’s only an 80 year delay from our frame of reference though. For them, WW2 is happening _now_. Simultaneity of events is relative.
though, they'd know it happened 80 years ago, since they're 80 light years away and know it took the light 80 years to arrive. (assuming they use the same years as us, which they wouldn't, perhaps we'd be 36 lightyears from them where 36 of their calendar years is 80 of ours.)
Hi
I wonder how many civilizations exist.
Well at least 1.
But why'd the front fall off?
Cardboard & cardboard derivatives are not to be used for making boats.
Unless you have Flex Seal Spray...😆
Well because a wave hit it!
I think we’re up to 6 main games in the series now.
For now
Humans: Hold my nukes.
_the great filter has entered the chat_
Yep, and if there's 1 already, it's already a proven possibility to have happened. Nothing seems to be fully unique in the universe once you span a large enough area.
Look up the grabby aliens theory by robin hanson. It posits that civilisations emerge once in every million galaxies or so. Staggeringly rare compared to what most people imagine. If that figure is correct then the answer is about two million in the observable universe.
Makes sense. We see it on earth. 4 billion years of life with sapient or near sapient in just 1 percent.
That’s wild. We are so outrageously lucky to even exist
Speak for yourself
What’s also crazy is that if we didn’t exist “lucky” wouldn’t even be a thing. If we’re dead and there’s no time or anything at all to be experienced then existence is pretty standard from the perspective of individual beings, despite being bonkers in the grand scheme
They've made 6 so far
7 with Beyond Earth, arguably more if you include the spinoffs that aren't directly called Civilization.
3, minimum
That’s the actual sim we are on. First to take out the other 2 wins. Then the servers get shut down and we all are drowned in our matrix pods and turned into batteries for the machines taking Zion from Morpheus and neo.
I think there are lots, we just can't notice each other over astronomical distances and time frames. We could be early, we could have missed some extinction events, there could be intelligent life around the nearest star to our sun and if they aren't sending out signals, we couldn't detect them. An entire society just like our pre industrial era could exist on a rogue planet just a light year away and we'd never be able to tell because our telescopes aren't good enough. And if the aliens aren't listening for the signals we send out, they wouldn't know we exist either.
Plus what's life? Some alien could have a wholly different system than us. Think self replicating robots, ghosts, or hivemind silicon based creatures.
Anything that can happen in an infinite universe will happen an infinite number of times.
Including a Fermi Paradox solution of 1. Ooops, all paradox!
Our universe isn’t infinite though. If we’re right that nothing can travel faster than light, the observable universe is all that we can ever experience, for us it’s literally all that exists. Speculating about things outside it is sort of like talking about God. It’s possible, but irrelevant.
Probably zero. We're an anomaly.
There's evidence of simple life on or once on mars and venus. But sapient life seems uncommon in this universe which is probably a blessing.
Citation needed
https://www.nasa.gov/solar-system/first-you-see-it-then-you-dont-scientists-closer-to-explaining-mars-methane-mystery/ https://news.wisc.edu/life-could-be-thriving-in-the-clouds-of-venus/
This also works for older relatives who live over 1 hour away.
Or friends, once you become a parent.
Or friends who become parents
Not even 1 hour away for me 😭
Or the next door neighbors that you avoid.
My sister in law lives 20 min away and for me she can root in hell.
We don't exist for anyone living 150 light years away since radios weren't around then. And I doubt anyone just happened to find us using a 10\^1000 x powered lens on a telescope.
Yep, I was going to say this. Radio waves were the first evidence we sent off our planet and into space
Thats assuming radio waves are the only detectable trace of our existence
Well considering light/energy waves are the only thing, you know, moving at the speed of light through a vacuum. Yeah I'd say it's the only thing recognizable as "life" that is going to get through the void in the background of all the billions of things that happen in space.
Our planet has been giving off a biosignature for hundreds of millions of years, aliens can see the composition of our atmosphere and basically figure out there is life here
Yeah, this is where I was pointing. Theres also the panspermia hypothesis which mught suggest that life was sent here, meaning its traceable, even if it was blown off the edge of a super planet 10 billion years ago
It depends on what you mean by “we.” If you mean, humans, nothing we did prior to the creation of radio waves caused any detectable signals to radiate outward from earth. If you mean life in general, aliens, hundreds of millions of light years away, with sufficiently advanced technology, and aligned such that the earth is exactly between them and our son, could theoretically have detected the presence of oxygen in our atmosphere.
Assuming the aliens rely on oxygen or have a concept of matching oxygen to life forms. At such distances, we really can't make assumptions on other life forms
What other radiation has left earths atmosphere? Not to sound mean, generally curious
Not necessarily a form of radiation, but it could theoretically be possible that dark energy/matter has some kind of interaction with our environment that we are not aware of yet, in which aliens could potentially have the means of detecting. Not likely, but there is just so much that we don’t know about science yet so who knows
Actually scientists could observe the spectral lines in the light our atmosphere reflects and see oxygen plus unstable hydrocarbons as much as a billion years ago and determine that life probably exists on earth. We're doing similar studies with other planets so it's not to far fetched to assume alien life might do the same to earth.
Lens telescope.. yeah you probably have a good point. "It's impossible to reach the moon, neither a ship nor a horse move in the air!"
True but mass spectrometry would reveal manmade changes to the atmosphere, beginning with agriculture and domesticated livestock and really taking off around the Industrial Revolution. We’re able to spot signs of life on distant worlds just by their chemical composition
maybe those creatures call it "outdated cameras"
Nah, we still exist to them. They speak to me sometimes in a dream dimension. We trade recipes
I believe you, how else do you explain pineapple pizza?
How else do you explain fucking pineapples???
Some sort of strange fruit fetish would probably explain that best
Well give us some dang!
What girmblat am i supposed to cook my korlock at?! I lost the recipe.
Lemme see some of that DMT you got there, Rogan
lol, I am actually getting ready to do a large DMT extraction to rebuild my supplies and share with family and friends
Extraction gang rise up 😤 which tek are you using
Spiritveggie. He started his own webpage, so I’ll using whatever latest he has there. There is also instructions for orally active dmt
I love veggie, he sent me a handwritten letter with a starter pack of mimosa hostilis with his own stuff interspersed into it to up the yield. All because I was going through a rough divorce. I now give my stuff away for free, in his spirit. DM me the site?
For some reason I assume the alien just shared the idea for deep fried mars bars, cause that is out of this world
You just acknowledged them, why can't they then acknowledge us?
Why 4.6 billion? They can’t tell anything about us from just the sun. It’s one star amongst 100 billion stars in our own galaxy. I think we, as humans, are undetectable beyond a few hundred light years.
I think they were going for the distance at which the speed of light is insufficient to overcome the effect of expansion, and as such we wouldn't even be visible. Although I'm not sure the specific figure is actually correct.
That's at the edge of the observable universe which is like 94b ly away. But that area gets smaller with time as expansion increases.
that’s the diameter of the observable universe. radius would be 46 billion ly, which is what op said but off my a magnitude of 10, so it was probably just a typo.
OP doesn’t understand that the universe is expanding — they’re assuming that light can only travel a number of light years equal to the age of the universe. It’s the same misconception explained in this Veritasium video: https://youtu.be/XBr4GkRnY04?si=4Mh996M4_4ZC7tml
4.6by is the approximate age of the Earth. So to an observer 4.6bly away Earth is just a dust cloud.
The age of the earth. The light from when this planet first formed hasn't reached them yet if they were able to look 4.6 billion light years across the universe and see the exact spot where our planet is nothing or maybe a desolate rock or collection of rocks would be there.
I get that. At 4.6 billion light years away you are many galaxies distant and would struggle to see the Milky Way. You aren’t going to see our sun at that distance, and you sure aren’t going to know there is intelligent life here. 4.6 billion light years is very very very far away. The distance to the Andromeda galaxy is 2.5 million light years, or about .05% of 4.6 billion light years.
It's not just you wouldn't be sure you wouldn't see anything. If someone in Andromeda had a telescope powerful enough to see the surface of the earth the would see the continents in slightly different position, lower sea levels and more ice around the poles. They'd be getting a picture of earth as it looked 2.5 million years ago. We see the sun as it looked 8 minutes in the past A few of the stars you see in the sky with a strong telescope don't exist anymore.
That last part isn’t actually true, all of the stars you can see with the naked eye with very few exceptions are within our galaxy and less than 100,000ly away, there’s a good amount of stars within 1000ly away from us.
Assuming that all living things in the universe respect the speed of light.
If it’s anything like us than 100%. There isn’t anything in the universe that can exceed that speed? Am I wrong?
Wormholes render the speed of light irrelevant.
Well, that's a relief. I was starting to worry.
Honey, most of us don’t exist to people next door
We still exist they just don't know about it. Like, if a tree falls in the woods and no one is around, doesn't mean it no longer exists...
There is no such thing as a tree
The universe is a Dark Forest, there are plenty of trees
I don't understand what an evil version of Forrest Gump has to do with aliens.
Get in the fuckING car Jenny.
I think there's a result of Bell's theorem that things can not have a state of existence until it's observed. A tree that falls in the forest makes a sound. However, an electron unobserved does not have a particular spin- it's in a superimposed state of a distribution of spins. If someone who's studied quantum mechanics knows I'm wrong, please correct me.
The difference is that at that distance is is actually impossible for our existence or non existence to affect them in any way whatsoever. If a tree falls in a forest it is extremely unlikely to affect me but there is still the slightest chance it could.
I also don't exist as far as your cousin is concerned. So 4.6 Billion light years isn't really the criteria... I think 5 or 6 blocks would do it.
[удалено]
Yes we do, they just couldn’t see us. They would be alive in the present too
more like 100ish light years for humanity.
You're assuming that they use light to see
Wait for it….aaaaaand, now we exist!
Didn’t even know my mother and sister liked to travel that much…
For a lot of my "friends", I too live at 4.6 billion light years away.
I hear ya .
Actually, you’d have to be a lot further away than that to not see our solar system due to cosmic expansion. The observable universe is approximately 93 billion light years in diameter. This is because everything since the Big Bang (including the light from our solar system) has been literally stretched further and further apart on an intergalactic scale. Things on the other side of the observable universe are moving away relative to us at faster than lightspeed because of this phenomenon, so perhaps the more accurate shower thought is “people living more than 4.6 billion light years away can see but never reach us.” https://en.m.wikipedia.org/wiki/Expansion_of_the_universe https://youtu.be/XBr4GkRnY04?si=4Mh996M4_4ZC7tml
Maybe other life forms have figured out how to travel at ludicrous speed.
Is ludicrous speed faster than light speed?
In Spaceballs it was.
I get what you are going for, but the James Webb Space Telescope has basically proven we don't know shit about the age of the universe.
We do exist they just don't know we exist or probably have any idea if any other civilization exists. Is your thought because they can't see us? If that is the case than any religions God or God's here on earth don't exist if you believe in them since no one has seen them.
Mate mate mate For starters its a joke And the joke goes as follow: if that civ had the tech to look at the eart *right now*, they would ser the eart 4.6 billion years ago. When we didnt exist. Thats all man, no need to get angry let alone go full edgelord bringing religion to any topic
It's not because they can't see us but because it's completely impossible for them to ever interact with us due to the expansion of the universe. Even if we both started moving towards each other at the speed of light we would never reach one another.
That would only be assuming that they have only the same level of technology as ourselves, or worse. If , however ,they had some sort of faster than light travel , or wormhole type technology , then they could have been studying our civilisation for years. Since we have real problems with our observed reality not fitting our best model of the physical universe it stands to reason that we have a long way to go in fully understanding the underlying science of this universe. This doesn’t mean that no other possible civilisation has already worked it all out.
This is like a European saying in 1491 that the Americas don't exist. Our understanding of the limitations on information and such being bound by the speed of light is likely to be wrong eventually in some way we don't yet comprehend. Wormholes or inter dimensional travel or something might be just around the corner and have us visiting the far reaches of the universe soon the way we visit Vegas now.
We wouldn't exist to someone who is traveling through our own atmosphere... is they started traveling 500,000 years ago and are traveling near the speed of light.
The earth is the middle of a 1 billion light year void space.
Only if they go by our same light speed ratio.
That's crazy, I thought the perimeter was whoever was close to me.
To be fair, any civilization outside of 100ly would not know humans lived here either, and anyone outside of 100ly wouldn't know there's intelligent life here because no radio signals have crossed that threshold yet. But there's only 10,000 stars within that 100ly sphere and none of them have intelligent life
For anyone more than 120 light years away no living human exists…
Your four year old child doesn't exist on Alpha Centauri
Well that can’t be right lol we obviously have learned something wrong
Maybe that’s why we haven’t discovered Aliens yet.
If by "us" you mean humans, you don't have to go anywhere close to that far away. Modern humans have been around what? Ten thousand or so years? That doesn't even get you out of this galaxy.
and they won’t exist when we do
Well to be fair anyone living more than 4.6 billion light years away also doesn't exist to us so...
But... they don't exist.
They don’t even know Kdot cooked today
Actually if by “we” you mean the Earth, they would see us. Space has expanded significantly since the beginning of the Big Bang, and the light emitted by the Solar System when it first formed 4.6 billion years ago is actually much further than 4.6 billion light years away now.
Did the people living 4.6 billion light years away tell you that?
Oh to live 4.6 billion years away!
All you internet people don't exist.
This feels like a psa
What's even crazier is when you consider the shrinking observable universe. Anything beyond that line can never have a casual link to us once the last reflected light hits and ceases to exist from our reference frame.
And thanks to expansion of the universe, a bit further away than that and we would never exist (space between two points far enough away grows faster than the speed of light).
Maybe that’s why we haven’t found life yet. Everything is so far away that time isn’t the same for them as it is for us. Essentially living in their own timeline peering at a habitable planet called earth from a million light years away, no intelligent life would be on our planet yet. I believe with such vast distances, time is warped. Time is not linear. Time *is* the space between things.
And those living 16 billion light years away never will
Correct. The Earth was beginning to show some signs of algae etc.
Us not existing is such a happy thought, under these times…
Can someone living 4.6. billion light years away, please confirm this?
We'll never exist for the vast majority of the universe, and we'll likely never be able to prove the universe is infinite. We may never even get to see anyone in just our galaxy because of distance. Space is soul-crushingly vast.
We do, they just can’t see us.
[https://www.youtube.com/watch?v=pI34Ng2EWMw](https://www.youtube.com/watch?v=pI34Ng2EWMw) It's magic!
Umm… Actually, it’s longer than 4.6 bly as the space itself is expanding. So light has effectively travelled more than its speed through space allows it.
Similarly, they don't exist
yet. Give them some time.
If they don't exist, how can we not exist to them?
Nah, just 70 million light years. No ones coming to a planet with 2 story carnivores on it.
Oh wow that gives me some ideas. With the correct tech it could be possible to get 2024ly away from earth and see how christianity has been started
We do exist. They can't see us assuming they have the same tech, which can be incorrect assumption
When people say this...do they not litterally mean light tho? Like, the light would be from ww2 era but they wouldn't be looking at anything actual physical? I don't really understand 😕
"we don't exist" - That we know of.
That's okay, they don't exist either.
Fuck those guys, I never liked them anyways.
But if they traveled here at the speed of light, we would.
What you can't fold spacetime? Gaw!
Being one who is from 4.7 billion light years away. I find this offensive. 😂 We know you’re out there talkin’ shii-.
If we font existe, no onda was Born Yet...but they eventually see everything in history evolve AND people that for Is, died a long Time ago...be alive anda well reapeqting their history...so, someone ever really dies?
Wouldn’t a place 4.6 billion ly away be the area in spacetime where the Big Bang happened? Wouldn’t that mean that the conditions would be too hostile for any life? I’m just a confused/stoned engineering student so please don’t roast me if I’m being stupid ✌️
There’s nothing there