Don't forget to check out Parts 2 & 3: Part 2 on The Exoplanets Channel: ua-cam.com/video/04AIXj78nJ0/v-deo.html Part 3 with Parallax Nick: ua-cam.com/video/iim--dKNUIk/v-deo.html
@@isaacarthurSFIA We keep hearing articles about limb regeneration, stem cell therapies and the like but either little in products and technology or hit roadblocks on fibrosis. Recently it's being investigated if one could core out damaged tissue piece by piece (micro-coring) below the threshold of scar formation to remove scars/damaged tissue. Just wanted to see/hear your take on the topic of regeneration.
@@isaacarthurSFIA *QUESTION:* ''Is it reasonable to expect any extraterrestrial life considering that there are more bacteria on Earth in any given moment than there are stars, planets & moons in the entire Universe, yet in the BILLIONS of years of microbial life on Earth, all animal life from the Silurian to today stems from *1 individual single celled organism* that lived 1B years ago and is the ancestor of all living & extinct animals that have ever existed Including humans???''
@@hiqhduke Well LUCA had other microbes evolving with it. Remember that microbes can steal dna from each other. Making their evolutionary tree like a mess of vines.
@@zs9652 that doesn't explain why abiogenesis occurred only once. Even Isaac Arthur & his collaborator don't want to answer my question. What does that imply???
"Hey guys, we recently encountered a great big fleet of Tyranids and things went really well. Lets exchange address details, we could even meat you for dinner!"
I’m so happy to see Nick getting to work in, he’s such a great creator and definitely will appeal to a lot of this audience. If you guys haven’t watched him yet, he’s a truly profound thinker and has a really decent, personable attitude to all his episodes. He does a lot on the history of astronomy and cosmology, and brings the stories to life with the skill of a master storyteller
i find the idea really funny that one of the answers to the fermi paradox is the equivilent to a bunch of space trolls telling you to microwave a tinfoil ball
This channel is the most amazing thing my brain has ever struggled to come up with words to express. Not only the content but the passion behind it and ability to make complicated ideas accessible and understandable. I just can't believe how ridiculously and thoroughly enjoyable an experience this is, a real hidden gem. Beyond A+ ☺️
or "we have picked up and decoded one of your transmissions talking about this... raid shadow legends... accoridng to the transmitter it appears to be an amazing piece of culture... we wish to experience this for ourselves" and then we quickly have to make an actually good game hoping not to disappoint them
Still probably not possible though right? With as optimistic as Isaac is, when even he doubts that FTL tech will ever be possible, it's not looking good.
@@AVerySillySausage yeah, right now it isnt, to do anything like that we need some kind of breakthrough in physics or invention, stuff like that is the only way.my guess is if we do figure it out it'll end up being not that complicated and was probably right in front of us the whole time
If they had FTL travel, it would be so useful that probably most of the aliens' transport and communication uses FTL. This makes interstellar travel much easier, making it more likely that fleets of alien ships would arrive just because of the scale of such civilizations implied.
Here's the thing though, we approach certain issues from a human pov. But that isn't at all necessarily the pov of extraterrestrials. When you talk about a cost of sending a big armada, maybe they don't have that concept, maybe they used to but abandoned it, perhaps everybody is on a UBI. Finally I will say that money is often the root of problems and surely advanced civilizations know that too so therefore logically they would have thought of other ways to operate their societies.
I just realized that you are uploading your videos Whit subtitles in Spanish. Thank you for that. I follow the channel for a long time now. And by far is the best and Sci fy and futuristic.
If I had a dollar for every time I've been disappointed by an Isaac Arthur video, I'd be broke. Great video, Isaac! Keep up the great content, you're by far one of the best channels on UA-cam.
Thank you Isaac Arthur! Informative and entertaining as usual. I wish I understood it better so I could say something constructive, informative and unexpected about the subject and content of this video, "Talkative Aliens" and about your other amazing videos. I'm embarrassed to say that I am still learning my grammar, like proper use of commas and quotes
ParallaxNick is one of the most underrated content creators in this genre of cosmological journalism. I'm so glad you got a chance to collaborate. I hope more people take notice of his work.
This was a great collaboration. I like all 3 channels. Alberto is underrated. One of the few youtubers also publishing whitepapers, advancing the bleeding edge.
I don't know if there already is such a thing or if it would last long, but maybe have a competition of intelligent signals. Each team would create different signal patterns, each representing some concept. Those signals would then be shared with all the other teams (possibly with random fake ones mixed in so they can't be sure which are actual intentional signals). Then all the other teams would attempt to identify which signals were valid and also what they represent. Points could be awarded by how many signals are interpreted correctly (cooperative), how many aren't identified but have a rational basis (competitive), or maybe both. The outcomes could help us send easier to identify messages and to consider more variety of things to look for. As for a method not mentioned on the video: Perhaps using a variation of Stargate's Heliopolis.. the atomic elements "Rosetta Stone". Transmit groups of repeated pulses of the atomic weight of each element (starting at hydrogen), with the relative delay between pulses representing the relative weights. Then go a step further and use those same timed pulses to define various chemical which are meaningful (like the building blocks of our organic life).
Hey Isaac in a recent episode you asked how many of us have been here since the begining and how many of us have watched all your episodes. I only joined at the dead aliens episode but I have watched all your videos. Some of them many times but all (not the livestreams) atleast twice and I love them. The colonising pluto is my favourite. I watched them all in the span of a week when I first subscribed and then also watched them all in cronological order at a rate of roughly 1 per day over the last couple of months.
Thanks! And yeah, Colonizing Pluto was particularly fun to make, got to play with some concepts for colonization we normally have to skip for the others as more 'basics', its a tie for favorite in that series for me with "Colonizing the Sun"
@@isaacarthurSFIA Im listening to your videos like audiobook before evening nap. It often generate dreams about sci-fi and alien civilisations that makes my dream plots much richier and I remember big chunk of them!
As someone also named Nick, I had a momentary panic attack at 10:53. For a brief second, I thought I was on the spot and had to continue the discussion. 😂
Isaac, fun talk. One thing that always bothered me about radio signal communication is the power limitation. We know that power actually falls off with the square of distance. When communicating with our satellites we are able to compress a signal using a matched filter. However, no such option is available with first contact. It would be interesting to see a comparison of the power needed to detect a signal from the nearest star with that of current tech. I would think it would be made even more difficult given that we’re transmitting (or searching for) signals from next to a star so the listener would invariably have an extra high noise floor.
What about scalar wave transmissions that Tesla talked about. He claimed they were FTL waves. In fact Tesla said they could travel at infinite speed. Just asking LOL.
I always feel so confortable when you invite the viewers to grab a snack or a drink because the video is long. I dont think most of your videos are long, and usually I just work as you speak so I dont see time flying by, but it is very polite the way you take into consideration that some people might feel that the videos are indeed long. Love your videos!
10:40 For me another nail in the coffin of the omnidirectional approach to signalling outside of your star system is that a omnidirectional signal that uses a known, well-understood and widely used technology will disrupt inter-system communications on a wide scale because it's so much stronger than normal communication needs to be; or it would have unintended consquences, like irradiating everyone that comes too close to the signal source and disrupt outbound, passive listening stations.
as far as interference goes, if you limit it to a certain frequency isnt that a non issue? Isnt that why we leave the hydrogen line open? Or do you mean to say that at these power levels frequency doesnt matter? Also, that is a good point. At close range... at these power levels its basically a microwave death ray right?
Hi Isaac! I have a proposal about a future episode: Popular misunderstandings of science. Im thinking of stuff like „why does ftl communication break causality?“ or „why can waste heat not be recycled indefinitely ?“. Those kinds of qestions ALWAYS come up in the fermi paradox and alien series. It might be best if you give them a more detailed review.
Instead of a camera with its shutter open, can we vary the open/closed ratio to find the frequency pattern? Some in resonance would be brighter than others. What if more than one transmitter is pointed in our direction?
Hello Isaac. I was wondering if you could talk about large scale element synthesis based on our current understanding of physics. Since we are talking about hypothetical civilizations with astronomical amounts of energy they could use, I would imagine they would need difficult to find elements (that cannot be easily located via asteroid mining such as non naturally occurring elements) for various purposes. I think this would be an interesting topic to talk about and as a chemist, I would love if you could cover it at some point!
Interesting idea, but I think that manufacturing various isotopes allredy is comercialy viable, maybe that would be the starting point for a new industry.
Isn't a billion billion equal to a quintillion? 9:26 That's assuming they use some kind of currency, which I don't believe goes without saying. If you'd like to read/hear more about this, look into The Venus Project. When you spoke of warnings like "don't try technology x, because it will get you killed" I vaguely remembered an episode of Star Trek in which a race misused something from Starfleet which ended up killing or harming them.
How about an episode on the data about Earth/humankind that was sent out on the Voyager in 1977 and what/how you would transmit about Earth/humankind in the 21st century if we were to send out an 'Isaac' in 2027... :)
I would assume that they do not use radio as with all the background noise it would be very much like trying to have an in depth conversation by the speaker stack at a rave
Sending three signals close together in time, like the Rosetta Stone of the same thing but not so different one from another to show expansion but still able to see a pattern and not random noise? Would that get some attention?
One day we'll receive a communique from a distant star, and excited scientists will rush to translate it, only to deflate once they realize it just says *"SEND NUDES"*
I know this is nerdy: In 'Star Trek', it's all about subspace. Warp theory says achieving FTL means creating a bubble of subspace around your ship that removes mass, allowing your ship to move faster than light. It's a bit more complicated, but that's all we need for this. The preferred method of communication also uses subspace carrier waves. Basically, if you can manipulate subspace at all, you'll be able to access communication AND travel. They're directly related. Yeah, I know.
The Wow! signal was a strong narrowband radio signal received on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the direction of the constellation Sagittarius and bore the expected hallmarks of extraterrestrial origin.
Im just guessing, and I think Art Bell also mentioned this once, that sending out images can essentially pack a thousand words in one image. Maybe 2 color initialy. Listen for a "carriage return" signal for the next line of pixels. This would also give the horizontal pixel count. What can be shown. Rough images of them and their world. Their counting system number base, such as 10 or something. Drawings of things.
@@eds1942 We can convert their radio signals to an image we can see and then try to understand it. Maybe they would do the same to ours, but there isnt much of a rush sending out messages to any particular location.
Why cant we just use that spooky action at a distance stuff to instantly communicate? Flip one particle and its twin flips. Then use Morse Code. Bam. Instant messaging across the universe. Well, after the twin particle is delivered to the area you want. But we humans can use this to communicate with ourselves as we travel space.
On aliens sending digits of pi or prime numbers in binary - is there any reason that they would have the same binary system of numbers (assuming base 10) that we would? And therefore would we really be able to decode it?
It’s why we cannot talk about Fermi paradox because no one would receive our broadcasts nor we could detect local alien communication. Unless there was an intercepted long range alien communication we wouldn’t even be aware of any
I have a very basic question: radio signal strength decreases rapidly over distance. At what distance from earth would our commercial radio transmissions no longer be detectable by a civilization with our level of receiver technology? Are our signals strong enough to be detected thousands or hundreds of thousands of light years away?
“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” - Arthur C Clarke I still hope for the latter!
@Riki 9653 They'd need to be very smart to make it galactic. Humans have barely managed to slowly uptech, stagnating for millennia at a time, any dumber than us and I don't like their chances.
There is a hole in that quote. If we are alone, no one to be a threat or compete against us. If we are not alone, then another race is a serious threat, especially if they are more advanced. I'd say not alone is more terrifying.
Hello, I'm a total novice when it comes to talking about space and aliens. I just wanted someone to help me answer a question I just had about this alien communication topic. I'm sorry it is going to be a bit long as I'd like to explain my thought processes. I did some google searches... 1) The Milky Way is 150-200,000 light years across, which means it takes light 150,000 (earth) years minimum to travel from one end to the other. 2) Radio waves travel at light speed, which means it'll just takes as long to go across the Milky Way. 3) Our own radio wave bubble is only 200 light year across. (From the time we emitted our first broadcast) My logic is that if there is no alien civilisation within our galactic neighbourhood and that an alien civilisation is on the other side of the galaxy, does that mean we won't hear their signals for another 148,000 years(-some light years for us not being at the edge of the galaxy), assuming that they broadcast their radio on the same day as us? If so, under this premise, for us to be able to hear any alien communications, a communication will have to be sent at a time greater than the distance from their planet to Earth. Now, given we have not intercepted any signals from any alien civilisation under known methods, we can make an assumption, from the time we have started listening to now (a meagre 50-ish years in SETI), that we have either 1) missed the window in which said alien was broadcasting (I guess we won't hear the signal twice once it went past us), or 2) an emerging civilisation might have already broadcast their signal, but it hasn't reached us yet. (I mean our own broadcast bubble is only 200 light year across) My question is as thus, Under assumption 1), said aliens might have either died off, or moved onto a different form of communication in which we are not able to detect. Putting aside that they might have died off, would it be possible that we might have just missed the window in which we could hear their transmissions before they developed a technology which we can't detect? If they were truly ancient, then that window to listen would have passed us a long long time ago. Unless I was mistaken in my assumption that we won't receive the same radio wave twice, would I be correct to call us arrogant in thinking that we could point our primitive equipment to the skies right now and expect to hear bustling galactic communications? Under assumption 2), could there be a chance that there are aliens out there who has only just started broadcasting, or even started broadcasting 100,000 years ago, but they are 100,001 light years away? I know that the possibility in this scenario is endless. However, given how supposedly even rarer intelligent life is according to recent studies, isn't it possible that a planet somewhere far away have also finally successfully rolled the intelligent life dice, but we could not hear them due to the distances involved? In addition, I would like to ask how black holes (especially one in the middle of our galaxy) and other know anomalies affect our known methods of communications? I learned that not even light can escape a black hole, does that mean that there is technically a communication void in the middle of our galaxy in which we cannot receive signals from the exact opposite side of our galactic centre? I'd like to apologise for the long post and I'd like to give my appreciation in advance to those who have read this and point out any mistakes in my reasoning and would kindly answer my questions.
Hei Man Chan , these are good questions. I would think that an artificial radio signal from the other side of the galaxy would have to be rather powerful for us to detect it; I would think it more likely that a closer signal, say 2,000 light years away, would be more possible for us to detect, but there is just no way to know at this time if we have missed some, of just have not gotten them yet, or how powerful, or if there are any at all. I’m guessing that simple, microbial life may not be uncommon at all in the Milky Way, while advanced civilizations are far more rare. It would be a bit spooky to me if we find out that one is out there that is millions of years further down the road in terms of technology than we are.
@@realcourte If the OP is saying they're new to this stuff, I wouldn't misguide them with that assertion. Quantum entanglement shows no way of being an effective form of communication. It's an excellent sci-fi device that I really like. But under known physics, it doesn't work. Which is unfortunate, because it sounds like such a great method.
We are not hearing from E.T. because we are low tech and of no interest. It would be like us trying to talk to an ape troop. The reason is simple: An advanced civilization has no incentive to talk to primitives - in fact, to do so might do the primitives more harm than good. So they have economic and ethical disincentives. No one is going to aim a beam our way until after we have sent a "hello" message their way. Such a signal would indicate that we might be worth talking to. Fist of all, it indicates we have an interest and are listening for a reply. Secondly, *if* we can send a competent "hello" signal, with content above the level of an ape throwing poo, they have some demonstration of our competency and capability.
Except we do have an interest in looking at primates and studying them. And studying us would actually be useful for all kinds of things, aside from simple curiosity it could be worth looking at us to understand biology and possible paths as well as cultural questions and even economic ideas.
@@Darkstar1484 - Most societies consider themselves to be far more significant than they really are. If our society is worth studying, it is because of our dreadful mistakes and ridiculous insanity.
@@richardgreen7225 There is a lot of stupidity sure, but you're acting like we're pants-on-head stupid. Chunks may be, at least some of the time but study of another culture is useful. Learn how they developed, look at what their myths are. Even minor historical cultures are important to study because it can help us learn more about ourselves as well as seeing what models were attempted and how local resources and the like might affect cultural development. For aliens there can also be a biological component, as we are the result of evolution our instincts and the like that pulled us forward may be similar or very different from other species.
@@Darkstar1484 - I expect that E.T. archeologists and future human archeologists will discover that we simply failed to learn from our mistakes. In other words, we are not "intelligent" at the level of world governance. We are just a bunch of apes who happen to use tools but not brains.
I think that radio or laser signals are not useful because it takes a long time to travel to other stars. If time is important you would try FTL if available. If time is not important and FTL is not available you best send probes to other stars. That way these probes can send back all kind of informations and you have no problems understanding them.
There's a million theories to explain the Fermi paradox. Here's my idea to add to the bunch; 1. Civilizations develop advanced AI to analyse potential dangers, threats, etc. among other things. 2. Advanced AI concludes that the risk of being attacked by a hostile civilization at some point is too high if you want to expand or/and exist over millions or billions of years. 3. Civilization decides the only way to ensure long-term safety is to create a portal to a parallel universe and one specifically that is young and uninhabited. 4. They arrive in their own universe safe from any possible threats and live in peace, leaving behind our universe without spending much time (other than a century or two) trying to reach out.
I love SETI and it's efforts. However -- I feel an equal amount of effort should be spent looking for alien intelligences inside our solar system and especially here on Earth. If FTL space travel proves to be impossible like you suspect then all the more reason for advanced civilizations to REMAIN in the area once they arrive from another star system. If so, then where might we look for them? Under the oceans, underneath the ice on Earth's poles, or underground in large mountain ranges, etc? Hiding in a slightly out of phase reality, another dimension, the future time period, or even on a parallel world that mirrors our own? If real, reported UFOs come from somewhere and probably NOT from a distant star system. A sufficiently advanced civilization would probably not find it very difficult to avoid being easily discovered. They would simply use their "magical" smoke & mirror technology.
As an adult, nobody but Isaac tells me to grab a drink and a snack. I find it oddly freeing. “Why yes, what a good idea, Isaac. I’ll grab some water and a bag of pumpkin seeds.”
Neutrino communication. Nearly as fast as light, and zips right through dust clouds, planets, stars, etc. There's been an experiment or two here on Earth, the idea being that it would be great for communicating with submarines. Of course, it also means you wouldn't need communication satellites: just point your transmitter at Beijing or Honolulu or the far side of the Moon or wherever. SETI is not looking for this AFAIK, and we as a civilization are limited in our capacity to do so.
Dear IA, your aliens series is my second most favourite series after Earth 2.0 (rare as it is) and tied with Post-Scarcity. Thanks for bringing out another episode of, dare I say, the most through and only non-pessimistic/non-messianic look at the topic I've found so far, at least outside the odd college class, and even that honestly barely holds a candle to it.
Don't forget to check out Parts 2 & 3:
Part 2 on The Exoplanets Channel: ua-cam.com/video/04AIXj78nJ0/v-deo.html
Part 3 with Parallax Nick: ua-cam.com/video/iim--dKNUIk/v-deo.html
Can you make a hard sci-fi video series about body regeneration or Scarless healing in the future?
@@davien001 The Future of MEdicine maybe?
Isaac Arthur I second that!!!
Part 2 isn't available in my country (Denmark)
@@isaacarthurSFIA We keep hearing articles about limb regeneration, stem cell therapies and the like but either little in products and technology or hit roadblocks on fibrosis. Recently it's being investigated if one could core out damaged tissue piece by piece (micro-coring) below the threshold of scar formation to remove scars/damaged tissue. Just wanted to see/hear your take on the topic of regeneration.
SETI should send the interspecies greeting with "90% of the aliens can't solve this earthling code" as a title.
Excellent video! It was a pleasure to collaborate with you :)
I hope we make contact with an extraterrestrial civilization in our live's time.
Already subbed. Best of luck with the channel :)
Thanks Alberto, it was a lot of fun!
You guys make youtube so much richer & more interesting! Thanks fellas
I just subbed to you also. Going to check your content out now!
This was awesome....Do some more.
Thank you Isaac, for giving me this oppotunity to work with you. Meeting you was as pleasant an experience as I thought it would be.
Thanks Nick! It was fun working with you and Alberto on this topic!
@@isaacarthurSFIA *QUESTION:* ''Is it reasonable to expect any extraterrestrial life considering that there are more bacteria on Earth in any given moment than there are stars, planets & moons in the entire Universe, yet in the BILLIONS of years of microbial life on Earth, all animal life from the Silurian to today stems from *1 individual single celled organism* that lived 1B years ago and is the ancestor of all living & extinct animals that have ever existed Including humans???''
@@hiqhduke Well LUCA had other microbes evolving with it. Remember that microbes can steal dna from each other. Making their evolutionary tree like a mess of vines.
@@zs9652 that doesn't explain why abiogenesis occurred only once. Even Isaac Arthur & his collaborator don't want to answer my question. What does that imply???
@@hiqhduke you wouldn't expect it to happen a bunch of times since existing life would out compete anything that is developing later
"Hey guys, we recently encountered a great big fleet of Tyranids and things went really well. Lets exchange address details, we could even meat you for dinner!"
If they are going to "meat" us for dinner instead of meet us for dinner I would suggest we not respond. :P
@@adarian Precisely my point.
Eh what could go-
*OM NOM NOM*
Greta sure likes to talk a lot... for a giant telepathic spider...
Every time I hear the phrase "talkative aliens", I keep thinking of Quark from Star Trek: Deep Space Nine; and Neelix from Star Trek: Voyager. :P
What if we aren't finding signals because the aliens are more introverts like Odo and Tuvak
Oh god, contact with the ferengi....
I came across your channel and I'm absolutely hooked on it now. Thanks for the great content Isaac
We finally got an alien message!!!
Well, what does it say!?
It says:
BE QUIET.
My sides-
Top man
I’m so happy to see Nick getting to work in, he’s such a great creator and definitely will appeal to a lot of this audience. If you guys haven’t watched him yet, he’s a truly profound thinker and has a really decent, personable attitude to all his episodes. He does a lot on the history of astronomy and cosmology, and brings the stories to life with the skill of a master storyteller
Even listening to him lament the crapping out of his computer is captivating. Probably the most under-exposed creator in this genre
Tom Lewis I 100% agree. He puts in so much work no matter his circumstances, you can’t help but appreciate it
i find the idea really funny that one of the answers to the fermi paradox is the equivilent to a bunch of space trolls telling you to microwave a tinfoil ball
OMG THOSE GRAPHICS !!
You guys have taken it to the next level.
That *is* saying something
I agree.
This channel is the most amazing thing my brain has ever struggled to come up with words to express. Not only the content but the passion behind it and ability to make complicated ideas accessible and understandable. I just can't believe how ridiculously and thoroughly enjoyable an experience this is, a real hidden gem. Beyond A+ ☺️
what if aliens send us a signal and all it says is " download raid shadow legends now!"?
Then we install adblock.
We should search for "how to build a relativistic kill vehicle"
The interstellar trade wars have begun
or "we have picked up and decoded one of your transmissions talking about this... raid shadow legends... accoridng to the transmitter it appears to be an amazing piece of culture... we wish to experience this for ourselves"
and then we quickly have to make an actually good game hoping not to disappoint them
Send Raycon headphones back.
Instead of sending a spaceship in a warp bubble (like the Alcubierre Drive), send a message, it would have way less mass to manipulate.
That's a pretty great idea ngl
HPG Stations from Battletech.
Still probably not possible though right? With as optimistic as Isaac is, when even he doubts that FTL tech will ever be possible, it's not looking good.
@@AVerySillySausage yeah, right now it isnt, to do anything like that we need some kind of breakthrough in physics or invention, stuff like that is the only way.my guess is if we do figure it out it'll end up being not that complicated and was probably right in front of us the whole time
If they had FTL travel, it would be so useful that probably most of the aliens' transport and communication uses FTL. This makes interstellar travel much easier, making it more likely that fleets of alien ships would arrive just because of the scale of such civilizations implied.
Here's the thing though, we approach certain issues from a human pov. But that isn't at all necessarily the pov of extraterrestrials. When you talk about a cost of sending a big armada, maybe they don't have that concept, maybe they used to but abandoned it, perhaps everybody is on a UBI. Finally I will say that money is often the root of problems and surely advanced civilizations know that too so therefore logically they would have thought of other ways to operate their societies.
I just realized that you are uploading your videos Whit subtitles in Spanish.
Thank you for that.
I follow the channel for a long time now. And by far is the best and Sci fy and futuristic.
Isaac, you have one of the best channels anywhere! I always enjoy your videos and I just feel like saying thank you.
It’s always a good day when Isaac Arthur uploads
I can't say anything but agree
Truth!
I concur
Agreed
It is called Arthursday
Good collaborative episode! Looking forward to parts 2 and 3
Last time another species was talkative towards us, we wiped them out. Rip Nehendertal.
Imagine tapping into a intergalactic Internet, it would blow our minds.
Three of the best science channels on UA-cam! This truly makes me happy...
If I had a dollar for every time I've been disappointed by an Isaac Arthur video, I'd be broke. Great video, Isaac! Keep up the great content, you're by far one of the best channels on UA-cam.
So you get one every time someone enjoys his video?
...Where can i sign up?
Thank you Isaac Arthur! Informative and entertaining as usual. I wish I understood it better so I could say something constructive, informative and unexpected about the subject and content of this video, "Talkative Aliens" and about your other amazing videos. I'm embarrassed to say that I am still learning my grammar, like proper use of commas and quotes
Nothing for you to be embarrassed about, most native English speakers don't know them very well either. You did pretty well there.
@@UpperDarbyDetailing Yeah cheers. I've learnt a bit more ;p
ParallaxNick is one of the most underrated content creators in this genre of cosmological journalism. I'm so glad you got a chance to collaborate. I hope more people take notice of his work.
This was a great collaboration. I like all 3 channels. Alberto is underrated. One of the few youtubers also publishing whitepapers, advancing the bleeding edge.
I don't know if there already is such a thing or if it would last long, but maybe have a competition of intelligent signals. Each team would create different signal patterns, each representing some concept. Those signals would then be shared with all the other teams (possibly with random fake ones mixed in so they can't be sure which are actual intentional signals). Then all the other teams would attempt to identify which signals were valid and also what they represent. Points could be awarded by how many signals are interpreted correctly (cooperative), how many aren't identified but have a rational basis (competitive), or maybe both. The outcomes could help us send easier to identify messages and to consider more variety of things to look for.
As for a method not mentioned on the video: Perhaps using a variation of Stargate's Heliopolis.. the atomic elements "Rosetta Stone". Transmit groups of repeated pulses of the atomic weight of each element (starting at hydrogen), with the relative delay between pulses representing the relative weights. Then go a step further and use those same timed pulses to define various chemical which are meaningful (like the building blocks of our organic life).
This is one of my favourite channels on UA-cam
Will UA-cam flag me if I go through each video and systematically like every single one?
I want more content.
MORE
Nope
Awesome, really nice surprise hearing Nick come in on this video!
You should give a spoiler alert
Hey Isaac in a recent episode you asked how many of us have been here since the begining and how many of us have watched all your episodes. I only joined at the dead aliens episode but I have watched all your videos. Some of them many times but all (not the livestreams) atleast twice and I love them. The colonising pluto is my favourite. I watched them all in the span of a week when I first subscribed and then also watched them all in cronological order at a rate of roughly 1 per day over the last couple of months.
Thanks! And yeah, Colonizing Pluto was particularly fun to make, got to play with some concepts for colonization we normally have to skip for the others as more 'basics', its a tie for favorite in that series for me with "Colonizing the Sun"
@@isaacarthurSFIA Im listening to your videos like audiobook before evening nap. It often generate dreams about sci-fi and alien civilisations that makes my dream plots much richier and I remember big chunk of them!
@@isaacarthurSFIA #528 I cheery pick. This one was a full watch.
Question would gravity waves work as a form of long range extreamly fast communication.
As someone also named Nick, I had a momentary panic attack at 10:53. For a brief second, I thought I was on the spot and had to continue the discussion. 😂
Zoo hypothesis - "Don't tap on the glass."
Haaahaahaha
Speaking of talkative aliens my basement alien jimmy has been talking my ear off about wanting to go home and needing food he is so high maintenance
Damn ET always chatting away
Mine was so annoying, I sold it on intergalactic black market.
Can you ask jimmy if I can go with him?
Translation of first verified alien message;
"We've been trying to get in touch with you about your vehicle's extended warrantee".
Whoo hoo! I've been anxiously awaiting this! Thanks to all involved!
This alien civilization series might just be my favorite... and you are working with ParallaxNick! He will finally get the credit he has deserved ❤️👌👏
Great video and love how they are a library of knowledge.
Amazing as always.
Keep up the great work :D
Everyone make sure you go over and watch the other parts if you’ve not seen the exoplanets channel or Nick’s videos, both channels are a delight!
Nice work gentlemen. I will be looking forward to future videos and collaborations.
Isaac, fun talk. One thing that always bothered me about radio signal communication is the power limitation. We know that power actually falls off with the square of distance. When communicating with our satellites we are able to compress a signal using a matched filter. However, no such option is available with first contact. It would be interesting to see a comparison of the power needed to detect a signal from the nearest star with that of current tech. I would think it would be made even more difficult given that we’re transmitting (or searching for) signals from next to a star so the listener would invariably have an extra high noise floor.
This is the only channel I hit the like button before even watching it!
Yay !!! The only reason I have UA-cam on my phone. Isaac Arthur, you rock! Thank you for all you hard work!!!!
This is an awesome collab!
Love your channel & vids. Also enjoyed the Stellaris soundtrack in the background! That's one of my favorite tunes from the game.
What about scalar wave transmissions that Tesla talked about. He claimed they were FTL waves. In fact Tesla said they could travel at infinite speed. Just asking LOL.
I always feel so confortable when you invite the viewers to grab a snack or a drink because the video is long. I dont think most of your videos are long, and usually I just work as you speak so I dont see time flying by, but it is very polite the way you take into consideration that some people might feel that the videos are indeed long. Love your videos!
I g7g
Isaac is the OG talkative alien.
10:40 For me another nail in the coffin of the omnidirectional approach to signalling outside of your star system is that a omnidirectional signal that uses a known, well-understood and widely used technology will disrupt inter-system communications on a wide scale because it's so much stronger than normal communication needs to be; or it would have unintended consquences, like irradiating everyone that comes too close to the signal source and disrupt outbound, passive listening stations.
as far as interference goes, if you limit it to a certain frequency isnt that a non issue? Isnt that why we leave the hydrogen line open? Or do you mean to say that at these power levels frequency doesnt matter?
Also, that is a good point. At close range... at these power levels its basically a microwave death ray right?
I love when you have guest speakers. Make the "bass drop" next time one comes on, that would be awesome! :)
Not a bad idea.
I love the idea that the look at me pattern for some aliens is just music
my sunday has been made, thanks Isaac!
We are the talkative aliens - broadcasting wily-nily into space without any consideration for our own safety...
Isaac Arthur + Marble League = Chill Sunday Relaxation
Hi Isaac! I have a proposal about a future episode:
Popular misunderstandings of science.
Im thinking of stuff like „why does ftl communication break causality?“ or „why can waste heat not be recycled indefinitely ?“.
Those kinds of qestions ALWAYS come up in the fermi paradox and alien series. It might be best if you give them a more detailed review.
Instead of a camera with its shutter open, can we vary the open/closed ratio to find the frequency pattern? Some in resonance would be brighter than others. What if more than one transmitter is pointed in our direction?
Hello Isaac. I was wondering if you could talk about large scale element synthesis based on our current understanding of physics. Since we are talking about hypothetical civilizations with astronomical amounts of energy they could use, I would imagine they would need difficult to find elements (that cannot be easily located via asteroid mining such as non naturally occurring elements) for various purposes. I think this would be an interesting topic to talk about and as a chemist, I would love if you could cover it at some point!
Interesting idea, but I think that manufacturing various isotopes allredy is comercialy viable, maybe that would be the starting point for a new industry.
Isn't a billion billion equal to a quintillion?
9:26 That's assuming they use some kind of currency, which I don't believe goes without saying. If you'd like to read/hear more about this, look into The Venus Project.
When you spoke of warnings like "don't try technology x, because it will get you killed" I vaguely remembered an episode of Star Trek in which a race misused something from Starfleet which ended up killing or harming them.
How about an episode on the data about Earth/humankind that was sent out on the Voyager in 1977 and what/how you would transmit about Earth/humankind in the 21st century if we were to send out an 'Isaac' in 2027... :)
I would assume that they do not use radio as with all the background noise it would be very much like trying to have an in depth conversation by the speaker stack at a rave
Lol you uploaded while I was finishing watching your other video
Sending three signals close together in time, like the Rosetta Stone of the same thing but not so different one from another to show expansion but still able to see a pattern and not random noise? Would that get some attention?
One day we'll receive a communique from a distant star, and excited scientists will rush to translate it, only to deflate once they realize it just says *"SEND NUDES"*
What about sending a message embedded in a gravitational wave, or maybe sending one by way of the casmir effect? Or by quantum entanglement?
I know this is nerdy:
In 'Star Trek', it's all about subspace. Warp theory says achieving FTL means creating a bubble of subspace around your ship that removes mass, allowing your ship to move faster than light. It's a bit more complicated, but that's all we need for this.
The preferred method of communication also uses subspace carrier waves. Basically, if you can manipulate subspace at all, you'll be able to access communication AND travel. They're directly related.
Yeah, I know.
The Wow! signal was a strong narrowband radio signal received on August 15, 1977, by Ohio State University's Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the direction of the constellation Sagittarius and bore the expected hallmarks of extraterrestrial origin.
Im just guessing, and I think Art Bell also mentioned this once, that sending out images can essentially pack a thousand words in one image. Maybe 2 color initialy. Listen for a "carriage return" signal for the next line of pixels. This would also give the horizontal pixel count. What can be shown. Rough images of them and their world. Their counting system number base, such as 10 or something. Drawings of things.
Dang it.
1). We can’t read that format.
2). This was meant to read by a species that can see in that spectrum.
@@eds1942 We can convert their radio signals to an image we can see and then try to understand it. Maybe they would do the same to ours, but there isnt much of a rush sending out messages to any particular location.
friend7 We’ve sent messages a few times and I think we did one not too long back. But, that’s all I can remember about it right now.
13:13 You saying we can recive space equvalent of nigerian prince scam?
Why cant we just use that spooky action at a distance stuff to instantly communicate? Flip one particle and its twin flips. Then use Morse Code. Bam. Instant messaging across the universe.
Well, after the twin particle is delivered to the area you want. But we humans can use this to communicate with ourselves as we travel space.
On aliens sending digits of pi or prime numbers in binary - is there any reason that they would have the same binary system of numbers (assuming base 10) that we would? And therefore would we really be able to decode it?
I always just assumed that they'd use messengers. Like a mail man but inter planetary or inter galactic.
It’s why we cannot talk about Fermi paradox because no one would receive our broadcasts nor we could detect local alien communication. Unless there was an intercepted long range alien communication we wouldn’t even be aware of any
How did I not know that this channel existed?
I have a very basic question: radio signal strength decreases rapidly over distance. At what distance from earth would our commercial radio transmissions no longer be detectable by a civilization with our level of receiver technology? Are our signals strong enough to be detected thousands or hundreds of thousands of light years away?
Thanks for the episode~
You guys know that the book "to serve man" is a cookbook right?
Why would they want to talk to a load of warring ape like beings ....Us?? So the earth apes have made a transmitter LOL.
“Two possibilities exist: either we are alone in the Universe or we are not. Both are equally terrifying.” - Arthur C Clarke
I still hope for the latter!
@Riki 9653 They'd need to be very smart to make it galactic. Humans have barely managed to slowly uptech, stagnating for millennia at a time, any dumber than us and I don't like their chances.
There is a hole in that quote. If we are alone, no one to be a threat or compete against us. If we are not alone, then another race is a serious threat, especially if they are more advanced. I'd say not alone is more terrifying.
Hello, I'm a total novice when it comes to talking about space and aliens. I just wanted someone to help me answer a question I just had about this alien communication topic. I'm sorry it is going to be a bit long as I'd like to explain my thought processes.
I did some google searches...
1) The Milky Way is 150-200,000 light years across, which means it takes light 150,000 (earth) years minimum to travel from one end to the other.
2) Radio waves travel at light speed, which means it'll just takes as long to go across the Milky Way.
3) Our own radio wave bubble is only 200 light year across. (From the time we emitted our first broadcast)
My logic is that if there is no alien civilisation within our galactic neighbourhood and that an alien civilisation is on the other side of the galaxy, does that mean we won't hear their signals for another 148,000 years(-some light years for us not being at the edge of the galaxy), assuming that they broadcast their radio on the same day as us? If so, under this premise, for us to be able to hear any alien communications, a communication will have to be sent at a time greater than the distance from their planet to Earth.
Now, given we have not intercepted any signals from any alien civilisation under known methods, we can make an assumption, from the time we have started listening to now (a meagre 50-ish years in SETI), that we have either 1) missed the window in which said alien was broadcasting (I guess we won't hear the signal twice once it went past us), or 2) an emerging civilisation might have already broadcast their signal, but it hasn't reached us yet. (I mean our own broadcast bubble is only 200 light year across)
My question is as thus,
Under assumption 1), said aliens might have either died off, or moved onto a different form of communication in which we are not able to detect. Putting aside that they might have died off, would it be possible that we might have just missed the window in which we could hear their transmissions before they developed a technology which we can't detect? If they were truly ancient, then that window to listen would have passed us a long long time ago. Unless I was mistaken in my assumption that we won't receive the same radio wave twice, would I be correct to call us arrogant in thinking that we could point our primitive equipment to the skies right now and expect to hear bustling galactic communications?
Under assumption 2), could there be a chance that there are aliens out there who has only just started broadcasting, or even started broadcasting 100,000 years ago, but they are 100,001 light years away? I know that the possibility in this scenario is endless. However, given how supposedly even rarer intelligent life is according to recent studies, isn't it possible that a planet somewhere far away have also finally successfully rolled the intelligent life dice, but we could not hear them due to the distances involved?
In addition, I would like to ask how black holes (especially one in the middle of our galaxy) and other know anomalies affect our known methods of communications? I learned that not even light can escape a black hole, does that mean that there is technically a communication void in the middle of our galaxy in which we cannot receive signals from the exact opposite side of our galactic centre?
I'd like to apologise for the long post and I'd like to give my appreciation in advance to those who have read this and point out any mistakes in my reasoning and would kindly answer my questions.
Hei Man Chan , these are good questions. I would think that an artificial radio signal from the other side of the galaxy would have to be rather powerful for us to detect it; I would think it more likely that a closer signal, say 2,000 light years away, would be more possible for us to detect, but there is just no way to know at this time if we have missed some, of just have not gotten them yet, or how powerful, or if there are any at all.
I’m guessing that simple, microbial life may not be uncommon at all in the Milky Way, while advanced civilizations are far more rare. It would be a bit spooky to me if we find out that one is out there that is millions of years further down the road in terms of technology than we are.
1) yes
2) yes
3) maybe
Quantum entanglement is way more efficient :) Radio communication is for very primitive civilisation...
@@realcourte If the OP is saying they're new to this stuff, I wouldn't misguide them with that assertion. Quantum entanglement shows no way of being an effective form of communication. It's an excellent sci-fi device that I really like. But under known physics, it doesn't work. Which is unfortunate, because it sounds like such a great method.
@@NautilusGuitars Maybe they should do an Earth/Mars experiment AHAH!. Mybe in 100 years :) Actually We're so primitive.
Thank You for the awesome video Isaac. This was really GREAT as usual. Can't wait for the next one.
13:25 = and this weak alien will kill us, didn't even finished the glass
Great series
We are not hearing from E.T. because we are low tech and of no interest. It would be like us trying to talk to an ape troop.
The reason is simple: An advanced civilization has no incentive to talk to primitives - in fact, to do so might do the primitives more harm than good. So they have economic and ethical disincentives.
No one is going to aim a beam our way until after we have sent a "hello" message their way. Such a signal would indicate that we might be worth talking to. Fist of all, it indicates we have an interest and are listening for a reply. Secondly, *if* we can send a competent "hello" signal, with content above the level of an ape throwing poo, they have some demonstration of our competency and capability.
Except we do have an interest in looking at primates and studying them. And studying us would actually be useful for all kinds of things, aside from simple curiosity it could be worth looking at us to understand biology and possible paths as well as cultural questions and even economic ideas.
@@Darkstar1484 - Most societies consider themselves to be far more significant than they really are. If our society is worth studying, it is because of our dreadful mistakes and ridiculous insanity.
@@richardgreen7225 There is a lot of stupidity sure, but you're acting like we're pants-on-head stupid. Chunks may be, at least some of the time but study of another culture is useful. Learn how they developed, look at what their myths are. Even minor historical cultures are important to study because it can help us learn more about ourselves as well as seeing what models were attempted and how local resources and the like might affect cultural development. For aliens there can also be a biological component, as we are the result of evolution our instincts and the like that pulled us forward may be similar or very different from other species.
@@Darkstar1484 - I expect that E.T. archeologists and future human archeologists will discover that we simply failed to learn from our mistakes. In other words, we are not "intelligent" at the level of world governance. We are just a bunch of apes who happen to use tools but not brains.
Another great video
13:16 so Sagan's Contact aliens?
Sunday updates are always a treat.
I think that radio or laser signals are not useful because it takes a long time to travel to other stars. If time is important you would try FTL if available. If time is not important and FTL is not available you best send probes to other stars. That way these probes can send back all kind of informations and you have no problems understanding them.
There's a million theories to explain the Fermi paradox. Here's my idea to add to the bunch;
1. Civilizations develop advanced AI to analyse potential dangers, threats, etc. among other things.
2. Advanced AI concludes that the risk of being attacked by a hostile civilization at some point is too high if you want to expand or/and exist over millions or billions of years.
3. Civilization decides the only way to ensure long-term safety is to create a portal to a parallel universe and one specifically that is young and uninhabited.
4. They arrive in their own universe safe from any possible threats and live in peace, leaving behind our universe without spending much time (other than a century or two) trying to reach out.
He has discussed these in earlier videos.
Absolutely love all your content. NEED MOAR! !!!!
This is such a cool topic
I love SETI and it's efforts.
However -- I feel an equal amount of effort should be spent looking for alien intelligences inside our solar system and especially here on Earth.
If FTL space travel proves to be impossible like you suspect then all the more reason for advanced civilizations to REMAIN in the area once they arrive from another star system. If so, then where might we look for them? Under the oceans, underneath the ice on Earth's poles, or underground in large mountain ranges, etc? Hiding in a slightly out of phase reality, another dimension, the future time period, or even on a parallel world that mirrors our own?
If real, reported UFOs come from somewhere and probably NOT from a distant star system. A sufficiently advanced civilization would probably not find it very difficult to avoid being easily discovered. They would simply use their "magical" smoke & mirror technology.
What!? It's Sunday... What happened to the space-time continuum!?
With the high frequency Range would expect lasers to have vastly higher data rates.
As an adult, nobody but Isaac tells me to grab a drink and a snack. I find it oddly freeing. “Why yes, what a good idea, Isaac. I’ll grab some water and a bag of pumpkin seeds.”
Now I want pumpkin seeds...
Neutrino communication. Nearly as fast as light, and zips right through dust clouds, planets, stars, etc. There's been an experiment or two here on Earth, the idea being that it would be great for communicating with submarines. Of course, it also means you wouldn't need communication satellites: just point your transmitter at Beijing or Honolulu or the far side of the Moon or wherever.
SETI is not looking for this AFAIK, and we as a civilization are limited in our capacity to do so.
15:40 this is somehow my favorite note of this video ^^
Dear IA, your aliens series is my second most favourite series after Earth 2.0 (rare as it is) and tied with Post-Scarcity.
Thanks for bringing out another episode of, dare I say, the most through and only non-pessimistic/non-messianic look at the topic I've found so far, at least outside the odd college class, and even that honestly barely holds a candle to it.
Is that Stellaris music I hear? It is, isn't it?