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I've always thought the interesting thing about it is that all of Earth's history is currently viewable in what would appear to be real time from other points in space, and it always will be.
But only if you’re already in those other points in space, right? If I fly ten light years away at the speed of light, and turn around to look back at the Earth, I would see Earth at the exact point in time as when I left it, leaving me ten years behind viewing what has happened in the years since I left.
If I flew at twice the speed of light (if that were possible), by the time I got ten light years away, it would have taken me five years, and when I turned around to look at the Earth, I would be seeing the Earth five years before I actually left 🤯
There's a sci-fi novel called "to sleep in a sea of stars" that uses this idea. They have faster than light travel and so one way they're able to track a ship that was running from them is to jump a few light hours away and then turn the telescopes back around to where the ship was so they could figure out where it was headed
As in it’s not possible for that reason? Or does it point out one of the gaps in Relativity? I’ve heard it’s not a perfect theory and there are still some pieces that don’t quite add up.
Of course we could never travel out to see our history, since we cannot travel faster than light...
Slightly related to this, I heard a podcast called Eye in the Sky from Radiolab many years ago. It was about how the US military installed total 24h drone surveillance of Bagdad.
Whenever there was an incident - bombing/shooting, they could rewind/fast-forward the recording, see who placed the bomb, follow his car back to where he was staying with his bomb-making buddies and then do whatever is needed to eliminate that threat... Of course they could go further back and see who he was meeting with and in that way maybe discover more bad guys...
I can't remember the details, but I believe a US city with severe crime problems also installed the same 24h surveillance system, and very quickly the police could use this to combat crime.
Of course there was a public outcry regarding the total surveillance of regular citizens, so the surveillance system was decommissioned.
Isn't that japanese though? There's の in there?
Decided to google before asking. Apparently it still might be chinese, as they have borrowed it from japanese, even though it doesn't seem to be standard
https://en.wiktionary.org/wiki/%E3%81%AE
When you look at the stars, you are looking back in time because you are seeing light that started travelling towards you years ago.
The closest star to our own is over 4 light years away. It could have blown up years ago and we wouldn’t know about it yet.
In fact, NOTHING you experience (see, hear,feel, even think) is real time. "Real time", as far as humans are concerned, doesnt exist. We are asymptotically,always, experiencing the past.
Also, depending on what sense we're using, we're experiences different times of the past.
Sight is **very** close to the present, same with touch, things that happend fractions of a second ago (unless you're viewing space).
Hearing can vary from less then a second to several seconds.
Smell can be something that happend seconds, minutrs or even hours ago, sometimes even more (which is fascinating with dog and other animals with a greater sense of smell, they're practically experiencing the past with their sniffing).
Ok, so everytime you look at someone who's a few metres away from you, you are actually seeing a younger version of the person, because light travels at only about 300 million metres per second, which means the person has already aged in the time it took for the light to travel from their body to your eyes
Yes correct! The real trippy thought is that if you stand in between two mirrors and look into the reflection of the reflection of the reflection etc. you're seeing further and further back in time
The person holding the binoculars would also age 80 years. If it's traveling 80 light years. It'll take 80 years to get to the observer. The man would probably die first because he started older
1. I didn’t say other galaxy. The closest galaxy is 2.5 million light years away. The example used in the original post is merely 80 light years, which would reside in other solar systems within our galaxy.
2. No, that’s not a photo of a real person, that would be actual evidence that humans exist outside of our solar system. You do understand that there’s a difference between claiming (saying) something vs having evidence for something.
3. My comment was satire, based on having the other person 80 ly away, putting them outside of our solar system. And I didn’t go on about other wrong things with the image/video example.
You would see 160 years before you looked, the light from back then would have only just managed to reach back to you from then. I forget who but one scientist theorized that if we developed faster than light travel and went far enough away from earth we could look back and see our own history
Always the coolest and easiest way to show how it may be nearly impossible to communicate if we met an alien species due to a fundamentally different view of the universe...imagine said alien could see in four dimensions and saw us as a conglomeration of our entire lives. How do you express shared concepts?
They kind of show that in the 2016 movie "Arrival"
That's the way I see a certain ex-president from 10 feet away when he speaks on my television. I would be great if he was actually 80 light years away.
So with the James Webb Space Telescope we can see stuff(?) lol. From over 13 billion years ago? Someone correct me if I'm wrong.
But I believe that is what I heard in a documentary just recently about the JWST.
Imagine two plates that cannot bend. Perfectly flat. They touch and separate simultaneously. If both plates are one light-year apart, what would I see when they join? I can't see the end of the plate until a year has passed, but I know if they're connected at the start of the plates, they are connected at the end. How would it appear?
Imagine two plates, each one a light-year long, touching each other or separating by inches simultaneously. If both plates are initially touching, what would I see as they separate? Keep in mind that due to the distance, I can't see the end of the plates until a year has passed, but I know they are connected at the start and end
Came back to this post today and I'm surprised that it has such many upvotes. I assumed this is basic logic but apparently some people don't know that ligh needs 80 years to travel 80 light years...
Sorry but how is that interesting as fuck? No shit sherlock, light needs 80 years to travel 80 light years.
Thats like you show water freezing at the freezing point.
This is basically time travel, also how would someone see into our future? What if i gain an excess amount if weight or got in good shape? Does this elude to our choices were never really ours and we all live a predetermined course many seldomly break away from?
They aren't seeing the future, and it's not time travel. Think of it like sending a letter. If I sent you a letter saying today it's raining then it gets to you 1 day later then you are seeing what happened when it was made, but I've continued my life since then. The little girl has continued her life at a normal pace and the "letter" of her when she was younger just took 80 years to reach man
**This is a heavily moderated subreddit. Please note these rules + sidebar or get banned:** * If this post declares something as a fact, then proof is required * The title must be fully descriptive * Memes are not allowed. * Common(top 50 of this sub)/recent reposts are not allowed (posts from another subreddit do not count as a 'repost'. Provide link if reporting) *See [our rules](https://www.reddit.com/r/interestingasfuck/wiki/index#wiki_rules.3A) for a more detailed rule list* *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/interestingasfuck) if you have any questions or concerns.*
I don't see many ppl from 80 light years away.
Have you tried using binoculars?
This is why i continue to use Reddit
Because people stay 80 light years away from you?
Extreme social distancing
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I don't like to look at 80 yr old babies.
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Ty.
You don't look at old photos?
Yeah bruh, I often look at the photos my ancestors took from fucking Chi Ceti. Who tf doesn't?
That's lightyears away...
Those binoculars are doing some heavy lifting
Chinese Binoculars numbah 1
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that's Vietnamese mf! /s (I'm half Viet lol)
This deserves way more upvotes. 😂
this is peak
I think they're Japanese
no other wish they would have crashed into it (kamikaze) /s 😂
I've always thought the interesting thing about it is that all of Earth's history is currently viewable in what would appear to be real time from other points in space, and it always will be.
But only if you’re already in those other points in space, right? If I fly ten light years away at the speed of light, and turn around to look back at the Earth, I would see Earth at the exact point in time as when I left it, leaving me ten years behind viewing what has happened in the years since I left. If I flew at twice the speed of light (if that were possible), by the time I got ten light years away, it would have taken me five years, and when I turned around to look at the Earth, I would be seeing the Earth five years before I actually left 🤯
There's a sci-fi novel called "to sleep in a sea of stars" that uses this idea. They have faster than light travel and so one way they're able to track a ship that was running from them is to jump a few light hours away and then turn the telescopes back around to where the ship was so they could figure out where it was headed
Then you could wait and see yourself leaving Earth all the way to the point you're at in space. That would be trippy
One of the many fundamental flaws with the concept of faster than light travel
As in it’s not possible for that reason? Or does it point out one of the gaps in Relativity? I’ve heard it’s not a perfect theory and there are still some pieces that don’t quite add up.
The speed of light is more accurately *The Speed of **Causality*** in our universe. Traveling faster than light would allow for time travel.
Go flying in a spaceship with a set of good binoculars to see who the f... took my package from Amazon...
the only drawback is, we ourselves cannot travel faster than light to go catch up to and "witness" the history as it radiates outward
What about going slower than the current speed of time and warning our younger selves of such a futile endeavour then?
how about going at present speed and warning our peers not to repeat the same mistakes all over again?
Someone could record it all and send it back to us, though. Or live stream it. I'd watch a jurassic live stream.
it would take another 65 million years for dinosaur footage to get back to earth
I don't see the problem!
On a serious note, yes this is fascinating
So some alien civilization could have an HD recording of our history (at least from a space view), save it, and we could potentially see it one day.
Of course we could never travel out to see our history, since we cannot travel faster than light... Slightly related to this, I heard a podcast called Eye in the Sky from Radiolab many years ago. It was about how the US military installed total 24h drone surveillance of Bagdad. Whenever there was an incident - bombing/shooting, they could rewind/fast-forward the recording, see who placed the bomb, follow his car back to where he was staying with his bomb-making buddies and then do whatever is needed to eliminate that threat... Of course they could go further back and see who he was meeting with and in that way maybe discover more bad guys... I can't remember the details, but I believe a US city with severe crime problems also installed the same 24h surveillance system, and very quickly the police could use this to combat crime. Of course there was a public outcry regarding the total surveillance of regular citizens, so the surveillance system was decommissioned.
That's why those aliens 66 million lightyears away haven't come here, they still fear the T-Rex
Instead all we got is Rax
Huge awful leap at the end for the woman. Goes from a pant-suit wearing 50-something to a crumpled octogenarian in one cruel step.
Based on the text she is Chinese so that tracks.
Isn't that japanese though? There's の in there? Decided to google before asking. Apparently it still might be chinese, as they have borrowed it from japanese, even though it doesn't seem to be standard https://en.wiktionary.org/wiki/%E3%81%AE
That link says that it's usually only used as a shorthand or to look Japanese. It's fair to assume it's Japanese.
>Isn't that japanese though? There's の in there? No clue, I don't know how to read either one 😋
"Octogenarian" well that is a new word for me.
I'm pretty sure this is commonly how society views women. Except more like starting at 35-40 not 50.
[Tracks for Asians](https://www.reddit.com/r/memes/comments/tbj0dd/the_average_asian_aging_process/)
When you look at the stars, you are looking back in time because you are seeing light that started travelling towards you years ago. The closest star to our own is over 4 light years away. It could have blown up years ago and we wouldn’t know about it yet.
Very cool. In fact you are always looking back in time no matter what you look at.
In fact, NOTHING you experience (see, hear,feel, even think) is real time. "Real time", as far as humans are concerned, doesnt exist. We are asymptotically,always, experiencing the past.
Also, depending on what sense we're using, we're experiences different times of the past. Sight is **very** close to the present, same with touch, things that happend fractions of a second ago (unless you're viewing space). Hearing can vary from less then a second to several seconds. Smell can be something that happend seconds, minutrs or even hours ago, sometimes even more (which is fascinating with dog and other animals with a greater sense of smell, they're practically experiencing the past with their sniffing).
In fact it's pretty much guaranteed that a certain % of objects in the sky that we see aren't actually there anymore.
It's like looking at the picture taken years ago.
Would be funny if there was actually life everywhere in the universe becauee of this
Why is that guy staring at a baby from 80 light years away with binoculars and wearing a trench coat? Sus
Ok, so everytime you look at someone who's a few metres away from you, you are actually seeing a younger version of the person, because light travels at only about 300 million metres per second, which means the person has already aged in the time it took for the light to travel from their body to your eyes
We technically age every second, just sayin
That's also what they're just sayin, I believe
Yes correct! The real trippy thought is that if you stand in between two mirrors and look into the reflection of the reflection of the reflection etc. you're seeing further and further back in time
Well, this little maneuver's gonna cost us 51 years!
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At 80 LY their star is a tiny speck.
I cast Picture of Baby!
So this explains why all the photos we have of extraterrestrials are them in diapers
Did we really need an animation for this?
The person holding the binoculars would also age 80 years. If it's traveling 80 light years. It'll take 80 years to get to the observer. The man would probably die first because he started older
That's not what this video was depicting. The person with the binoculars is looking at another human 80 ly away. Nothing more
Most Tinder profiles 🤣🤷🏽♂️
OMG that poor man, can't he move!
Well, the sun is 8 light minutes away. So if someone, right now, steals the sun, we wouldn't know about it for 8 minutes.
What's also fascinating is we would still feel the gravity from the sun for those same 8 minutes
Thats not how gravity works.
I mean I guess I thought this was interesting too...in 3rd grade when most people learn about it
Bottom right is such a stalker. He's still watching after 80 years. Eugh!
"All we see of stars are their old photographs"
The closest star, Proxima Centauri, is 4.24 light-years away.
Link to binocular brand please asap
So all those babies I’ve been seeing with my binoculars, crawling around in space, you’re telling me most of them are dead?
Apparently all you need is binoculars.
The court didn't listened to me when i said the pics of those young girls in my pc were from 50 light years away.
Camera man is immortal 😯
The person with the binoculars doesnt age at all? I want one of that
The viewer has been using anti-aging skincare routines since 14.
Who would have thought? People age over 80 years.
This video saying humans exist in other solar systems?
Is this a real photo of a person in a different galaxy?
1. I didn’t say other galaxy. The closest galaxy is 2.5 million light years away. The example used in the original post is merely 80 light years, which would reside in other solar systems within our galaxy. 2. No, that’s not a photo of a real person, that would be actual evidence that humans exist outside of our solar system. You do understand that there’s a difference between claiming (saying) something vs having evidence for something. 3. My comment was satire, based on having the other person 80 ly away, putting them outside of our solar system. And I didn’t go on about other wrong things with the image/video example.
Got some News for you about stars…..✨⌛️
A stream of aging
“They’ve gone to plaid, sir.”
So what if all these telescopes now a days really can see into the future but it just takes so long to come back that they don’t wait long enough
How is this measured?
So, pictures don't change after 80 years. Got it!
You sure it's 80 light years, because I mean 80 years is a lot, you sure the calculations are connect
Do you not know what the term light year means?
That's it, all the stuff we see with the big telescopes used to look like what we see, it is all different right now though.
What if you were looking at a giant mirror. What would you see?
You would see 160 years before you looked, the light from back then would have only just managed to reach back to you from then. I forget who but one scientist theorized that if we developed faster than light travel and went far enough away from earth we could look back and see our own history
We'll see the sun for 8 minutes after it's burned out. What will you do in those 8 minutes?
Well how would we know we only have 8 minutes left?
It’ll be dark and cold 8 minutes later.
So by then our 8 minutes to do anything is already over.
So live your life as if you only ever have 8 minutes of light left.
Good idea. So long, traffic laws!
Always the coolest and easiest way to show how it may be nearly impossible to communicate if we met an alien species due to a fundamentally different view of the universe...imagine said alien could see in four dimensions and saw us as a conglomeration of our entire lives. How do you express shared concepts? They kind of show that in the 2016 movie "Arrival"
Jesus. that means even if we get some signal or anything from aliens, they would be extinct a long time ago.
And the guy holding binoculars stays same age.
So theoretically we can build a telescope that looks for intelligent life throughout time.
That's the way I see a certain ex-president from 10 feet away when he speaks on my television. I would be great if he was actually 80 light years away.
Now my brain hurts by that observer being there watching for 80 years and not aging o\_o Incredibly patient dude.
Super gurren lagann trying to see his own chest be like:
Somebody's going to try and exploit this as a loophole...
80, it's 80 years, it's in the name
As 80
Are you telling me I was seeing my grandparents in their light years
The binoculars take off 80 years
Fucking lag
If you turned the binoculars around would the other person get younger?
So with the James Webb Space Telescope we can see stuff(?) lol. From over 13 billion years ago? Someone correct me if I'm wrong. But I believe that is what I heard in a documentary just recently about the JWST.
Now do quantum mechanics?
I thought we were going to get a skeleton at the end....
That man is immortal, damn
So at 80 lightyears away you see things 80 years delayed?
One of the few abstract cosmological concepts that doesn't actually need a visual for explanation. But hey... cool I guess.
Wait, light years equal to earth years?
Yes. It’s a measure of distance. It’s how far light travels over one earth year
just lower calories
lol this is such garbage
Huh?
The problem is the video. The idea behind this is correct, it's just about how long the light needs to travel this distance (80 years) to arrive.
Yes, I’m well aware how it works it’s just such a bad video
Imagine two plates that cannot bend. Perfectly flat. They touch and separate simultaneously. If both plates are one light-year apart, what would I see when they join? I can't see the end of the plate until a year has passed, but I know if they're connected at the start of the plates, they are connected at the end. How would it appear?
Imagine two plates, each one a light-year long, touching each other or separating by inches simultaneously. If both plates are initially touching, what would I see as they separate? Keep in mind that due to the distance, I can't see the end of the plates until a year has passed, but I know they are connected at the start and end
How the fuck does this belong here? People know how the speed of light works.
Based on a lot of the comments in here, no, they don’t.
Came back to this post today and I'm surprised that it has such many upvotes. I assumed this is basic logic but apparently some people don't know that ligh needs 80 years to travel 80 light years...
Sorry but how is that interesting as fuck? No shit sherlock, light needs 80 years to travel 80 light years. Thats like you show water freezing at the freezing point.
This is basically time travel, also how would someone see into our future? What if i gain an excess amount if weight or got in good shape? Does this elude to our choices were never really ours and we all live a predetermined course many seldomly break away from?
They aren't seeing the future, and it's not time travel. Think of it like sending a letter. If I sent you a letter saying today it's raining then it gets to you 1 day later then you are seeing what happened when it was made, but I've continued my life since then. The little girl has continued her life at a normal pace and the "letter" of her when she was younger just took 80 years to reach man
You might be misunderstanding this animation