How are we searching for Extra Terrestrial messages ?
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- Опубліковано 26 січ 2023
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We been searching for intelligent life outside out planet for over 100 years and yet we still haven't found anything that provides solid proof that is out there. So in this video we look at how we are seaching to find E.T.
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Written, Researched and Presented by Paul Shillito
Images and footage : BerkeleySETI, NASA, ESO, ESA, VLA, Ohio State University,
andys-arcade, Astro-Physics Community
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An idea for a future episode: what would happen if a verified signal was received?
Panic or hide...
Practically it would most likely not happen anything at all. The signal would probably come from such a distance that we can't send a reply that arrives to them within our lifetime.
However, it could affect things such as religion that assumes humans are something special.
In practical terms nothing would change because the signal would be from so far away that, without inventing warp drive, we could never reach it. and it could easily be older than the dinosaurs.
@@user-ni7ct5vr8u religion can go duck itself! 😡
Why BILLIONS of people believe in fairytales is beyond me 🤦🏻♂️ The world would be a much nicer, happier and safety place to live in. It also wouldn't of held back 100's of years of science and innovation.
I couldn't even IMAGINE how advance the world would be if someone didn't invent religion 😪
The person who identifies the signal panics and crashes his car down mountain whilst delivering the message...
I rarely subscribe to new channels I find, but this is one of the unusal ones. I have never come upon someone explaining complex matters in such a down to earth way. Clear, understandable. Keep it up!
Curious Droid is one of my favourite YT channels out there.
"I rarely subscribe to new channels"
Try to be more open-minded. There's lots of good ones amid all the chatter.
Have you tried Scott Manley?
This one's a keeper. Worth your time.
@@qqqsfdf1232 crap shirts
As far as I'm aware, 1420 MHz was chosen because it would be a sensible thing to be looking for (there's a lot of hydrogen in space), but there's also not much in the way of noise on that wavelength which makes it easier to detect. Those signals still aren't going to make it very far before they lose enough energy to just look like noise. We don't have the transmission power to reach very far in general (comically speaking).
Probably a good thing. "He who wields the biggest fist rules" strikes me as a far more universal thing than the "Oooh, we're such an advanced civilization now we'll never use force for arbitrage again" rosy-glass bullshit.
@@AttilaAsztalos 😑
Voyager is sending back data using a 14 foot antenna with just 23 watts of power.
1420? Well, I found some intelligent life there! There was some unintelligent too...
@@lordgarion514 A directional signal aimed at Earth and a tiny fraction of the distance to the nearest star.
Really enjoying the humorous remarks. Awesome video as always
Making fun of bad investments then saying we should invest more in looking for aliens is funny, but not in the way that was intended I believe.
It wasn't really funny, it just gave me second-hand embarrassment that he inserted a dumb personal opinion into one of these videos. Telling other people how they should be spending their money is infantile.
@@Robbie-mw5uu buying twitter because nobody likes you and setting a world record for most money lost instead of using your money for good is worthy of ridicule.
@@Robbie-mw5uu Similar to ad hominem attacks because someone expresses their opinion and you didn't like it, I presume.
@@TheDoctor1225 It wasn't an ad hominem attack, as it wasn't an attack. It's called a criticism, and since it wasn't hostile, is wasn't an attack. It's OK to make a criticism in the real world by the way. Go back to your safe space now.
aliens probably found tiktok and decided not to answer our calls.
Then they should be really close. First, tiktok videos are detectable in less than 10 light years.
There will come a time when tiktok will be considered for elder people... I fear that time...
They can't be that close
😂😂😂
😂🤣😂🍻
One problem with all of this is that if a species advanced their technology so they no longer use radio then we’d never detect them. That is a distinct possibility.
What else would they use? What other methods are there to send remote signals over vast distances of spacetime? Gravity-based signals? Nutrino based signals? What else could be used? Is there something fundamental we completely missed? I struggle to believe this is the case.
No, the primary reason we would never detect anything is because it's encrypted. It would likely look like noise. Only real definitive signature would be a narrow channel modulated signal. Not much in the universe creates a signal like this other than I think FRBs. Which we have no concrete proof of what exactly causes them other than some evidence that nuetron stars are involved. If this was detected, you can be reasonably sure it was intentionally sent by someone. Even the FRBs are suspect, but I wouldn't rule them out as being natural phenomena.
Not to mention there is no reason for *them* to keep using radio alongside their more advanced methods. After all it could be possible that the aliens their trying to contact haven’t developed tachyon radios, or other advanced communication.
@@LiveType whoosh o0
@@LiveType thats right fella we got it all figured out nothing more to learn or see here
15:17 you mentioned Arecibo "up and running again" Do you know something that the rest of us don't know? Did the NSF quietly say they are repairing or rebuilding?
That caught my ear too.
He actually said "when it's up and running again". As in, when repaired and back in action (hopefully) in the future.
Yes they announced it a few years ago that they were rebuilding it and it was going to be bigger and better equiped.
It's amazing that even though I have little interest in the subject of SOME (few) of your videos, I have yet to find one that did not hold my attention and sometimes even captivate me. You are such a good researcher and spokesman for your channel! Well done, Paul.
I may be mistaken, but I thought NSF had said, very clearly, that Arecibo was NOT coming back. :(
A fantastic overview Paul, thank you! I agree with your final sentiment about looking for intelligent life on earth first... Sometimes you have to wonder.
Thank you Paul, as always content that is interesting, informative and well presented.
Always gives me a smile when I see one of your videos in my sub box, keep up the good work!
I thought Arecibo was beyond a doubt retired? NSF said no to repairs, didn't they? Edit: yes, in October 2022 NSF categorically ruled it out.
Yeah, sadly, there are no plans to rebuild... it will never be up and running again.
After watching this excellent video, I did go and search to see if NSF had changed their minds, but it looks like Aracibo will still not be rebuilt or replaced, sadly.
Whilst our signals may have reached the nearest 1000 stars, but the signal to noise ratio makes detection really limited for detecting radio leakage.
Only strong directed repeated signals could be realistically detected
Yes, ideally you'd need a high power directed beam of a very narrow band signal, for example just a carrier of morse code or a data pattern using carrier frequency shifting. You need to bundle the power and get the signal to noise ratio as low as possible... and then there's the barrier of light speed. Sending a signal to the Andromeda galaxy would take about 2.5 million light years to arrive, even if you send a strong enough signal from earth to be realistically picked up
Great video. Paul's last comment reminded me of these lyrics from Monty Python's Galaxy Song "And pray that there's intelligent life somewhere up in space
'Cause there's bugger-all down here on Earth"!
As usual and as expected, a very brilliant video documentary from the Curious Droid
The big issue is the one over r squared issue. The more advanced, the more trasmitters. Equally, the better the amplification so the less power that is needed. I suspect they are just too far away.
Or they are dead. Civilisations popping up and disappearing like fireflies (on the cosmological timescale).
Distance is the problem.
The assumptions about Aliens are very human centric. How long would it have taken human Africans to develop the radio independently?
@@engineeringvision9507 About another 50,000 years.
Always have great video subjects Paul, at top quality. Thank you.
15:45 - Best end of video punch line ever! Love it!
Congrats on 1million subscribers. Easily one of the best researched, written, and presented UA-cam channels
Reminds me of an episode of South Park from like 20 years ago where Earth is just a reality tv show watched by various alien beings all over the universe... If intelligent life is out there I doubt they'd wanna talk to us, they'd just tune in to watch the dumpster fire that is modern human society.
Maybe on some other planet they have similar silly political systems where "leaders" are showing their population how things are on Earth then saying "at least we're not as bad as they are". They all avoid us so they can use us as the case example of how not to do things.
Literally the plot of the simpsons hit and run lol
'...and pray that there's intelligent life somewhere up in space, 'cause there's bugger all down here on Earth'
Please do not ever stop making your videos I love them
With care,with awe-and a huge dose of what got the cat to the afterlife !
Curiousity killed the cat, but satisfaction brought him back.
Great episode, thank you so much again for the amazing content you provide.
Another great essay, Paul. II loved your final summation...
I used to contribute to SETI@home back in the day. I had like 4 machines of my own up and running with it, and I use to sneak it on to other computers as well if I could. :D Later I moved on to Folding@home for a good while. But now I do neither. Computers nowadays take too much power, and electricity prices are through the roof lately
Energy to run a computer is no more expensive that energy to run an electric heater. I used to live in an apartment equipped only with electric heaters, so I set up computers running SETI@home instead.
As you know, the project’s over and it never found SETI... but it was fun to try.
@@gdutfulkbhh7537 Well I don't have electric heating :) But yeah if I did I would be folding or mining crypto
Another awesome video. Thank you so much Paul
Great video again Paul!
Fantastic as always!
21 years and about 7-8 different PCs I used to crunch seti packets. Too bad it is not available anymore :(
I remember those days..............memories....
Sadly, I crunched SETI@home and the mersenne prime search not Bit Coin in the early days...
Excellent video.. Thankyou as always Paul. 😎👍
Thank you, Paul, for a great summary of the current state of SETI.
I live near the Jodrell Bank radio telescope in Cheshire. that has a great history and story. I'd love if you could do a video on that please.
There is life out there but the universe is too big for meeting up.
By walking for sure.
We think, based on our current knowledge of physics and technology.
Absolutely astonishing mate love this show always watching good on ya mate 👍
"or the Arecibo telescope when it's up and running again"
Wait, is Arecibo being rebuilt? Last news I heard was that it wouldn't be, and a quick google search confirms as of October 2022, did this change again?
Yes it's being rebuilt and it's going to be huge and better equiped.
@@cyankirkpatrick5194 source?
@@pr0hobo a channel here on UA-cam two years ago.
Top quality, as always.
One question: have you ever considered being on Nebula streaming services?
Your content is right up there and I could see you being there too.
Please no
@@burntnougat5341 ?? May I ask, why? Why do you think that it would be a bad idea?
@@StaK_1980 streaming service fatigue. There are simply too many and needing to subscibe to yet another one just to watch a certain channel is very off putting
Arecibo Radio Telescope up and running again? That's a good one. All the money we blow every year and know one wants to rebuild her. What a shame.
15:43 Lol, best burn ever🤣👍
Excellent video bro
Thanks again Droid.
I was so excited to see a new @Curious Droid video, i gave a "Like" to the Squarespace Ad 🤣🤣🤣🤣🤣🤣
when i saw the thumbnail comfortably numb instantly started in my head
The main problem which you touched on is time. Although you said "Also that any intelligent beings are active at the same time as us" there is the problem of the time it will take for any signal that we can understand reaching us. Alpha Centauri is 4.367 light years away from us which means it takes that length of time for any signal in the electro-optical range travelling at the speed of light to reach us and for anything further away it will take a correspondingly long time for any signal to reach us. If there is an advanced civilisation even only a hundred light years away from us and we were to receive a signal we could understand from them now, they will have advanced another hundred years technologically since they sent that signal and will have advanced a further hundred years by the time we have sent a reply even if we did so right away. This problem only gets worse as distance increases which could mean that any civilisation that sends a signal to us may have died out by the time we either receive their signal or by the time they would have received our reply. The posibility also is that we could have died out by the time that any civilsation sends us a signal if they are a significant distance away from us and decide to reply to our transmissions when they receive them as sending and receiving signals is twice the distance in light years which very quickly doubles the length of time for any interaction between advanced civilisations.
As a nomadic baby in Abyssinia/Ethiopia occupied western somalia I had seen an extraterrestrial beings in the country side. I was standing near my auntie two men in what I can describe now Mazda MX-5 appeared like 40 feet from us they look at me, smiled and signalled I go over to them and instead I stepped towards my aunt and clinched her skirt/blouse they flew in vertical circle in the air in extreme rate of speed and disappeared into the sky. I can NEVER forget that experience. Now sometimes I wonder what would happen if I had went over to them, sometimes I wonder if they were intending to reunite with my deceased mother and were trying to avert troubled life and neglect to come. This was before I knew what any form of transportation was or any type of television was or had access to them let alone UFOs or extraterrestrial topics or discussions.
Aliens in those days used Mazdas due to their excellent fuel economy and good handling. They now use Teslas, which have better acceleration and lower operating costs.
@@incognitotorpedo42 we are on different frequency!
Love this content!
I just finished the first book of the Three Body Problem. Spooky spooky
One issue not covered would be the effect on a star's output due to a Dyson sphere / swarm.
Yes, I have been searching for intelligent life here on earth for a while now, with limited success….
Ohh, you’re so advanced
@@alecbaldwinsnotpropgun but I am
excellent comprehensive research
Excellent video 👍
I love you dude/droid. Love your vids
"Is anybody out there?". Yes, Me.
I live in your walls
So no intelegent life then?
Just kidding
@@vpheonix none at all my head empty
@@laurel5432 I will burn this house down
15:17 They announced last October that they won't be rebuilding Arecibo...
Best channel on youtube
Great overview here
Great content as usual 👍🏻🇺🇲
Nice! I hope they hear us and come save us! We are in dire need
Once they realised that we can't even differentiate between a man and a woman, they'd probably turn around again.
@@MattyEngland maybe we'll get lucky and they'll haul off a few of the rainbow/alphabet weirdos to keep as pets
@@_Frank_the_Tank 🤣🤣🤣🤣🤣 My favourite comment of the day.
Dark Forrest cured me of that hope
Broadcasting signals are at best a megawatt or so (and usually omnidirectional) while military radars are gigawatt level and highly focused (extremely high EIRP). So the "loudest" signal we have ever sent (and are still throwing into space) is from military radars such as Pave Paws, BMEWS, etc. Given there are often physical reasons for choosing specific radar frequencies (water vapor absorption, etc.) I believe it would be more productive to look for ET's radar emissions rather than some human-centric "water hole" frequency the use of which may never have crossed an alien's mind. (In fact, we don't use that frequency at all because we *listen* on that frequency. What if the aliens are doing the same thing?)
This channel definitely shows signs of terrestrial intelligence! 😊
Curious droid never disappoints me
Paul you should do a video about the SR-71! You have great videos on other iconic planes of history, but somehow you don't have a video about THE single coolest aircraft ever built or flown.
Thank you for the awesome video Paul! Are there actually plans to rebuild Arecibo? Last I heard it was too damaged.
I have to correct you at 4:05. HG Wells very much said that he based War of the Worlds on the colonisation of Tasmania by Europeans.
There might be intelligent life out there but it’s very difficult to transmit info or survive long enough to be truly interstellar.
The reason nobody is willing to put significant money into SETI is that our understanding of what advanced aliens might be like has advanced since the 70's. We now realize that anyone even a couple hundred years more advanced than Earth would have large telescopes in space capable of detecting the presence of oxygen on earth from thousands of light years away. We also understand that with anything even vaguely close to self replicating machines it would be relatively easy to capture a harness a fraction of the local star's output and send probes or manned spacecraft to any other systems where life has been detected. That same capability would also allow any alien species to spread across the entire galaxy in only a few million years, a tiny fraction of the age of the universe. If intelligent alien life was common, at least some species would have managed not to kill themselves off or would have created immortal AI successors long ago, and finding at least some of those aliens would be as simple as checking my UA-cam subscriptions. The fact that I am not subscribed to any aliens on UA-cam gives me an extremely high confidence level that any money spent of SETI will be wasted.
Hope you are doing good now bro. Thanks for the video 👍
Another nice shirt!
Very nice. Let’s see Paul Allen’s telescope array.
Good one
Hello.....is there anybody IN there...just nod if you can hear me...is there anyone home?
Nope, Bidens head is completely empty of all matter
It was a sad day when SETI@Home shut down.
I used to use that! Using BOINC. Tbh, people are less likely to volunteer for that stuff these days when electricity is so expensive and people would rather use that computer power to mine cryptocurrency than donate to science.
Thanks Ian. 🙂👍
3:14 If this had been translated as Cannelloni, science fiction would have taken a very different track.
Mars would be the home of the Flying Spaghetti Monster, praised be his noodly appendages!
It's hard enough to find intelligent life in my street!
This is perhaps the first video on this topic on YT that has even touched on the difficulty presented by the need for the mystery alien source to have created a suitable signal in a *time* frame that lets the signal reach us while BOTH civilizations are simultaneously at a near enough level of sophistication to even grasp what the event means AND be able to do anything useful about it. All other analyses touch on the vast volume of space and the quantities of possible frequencies and/or means of signalling. As the cosmos expands more and more possible places (and therefore their energy signals) move permanently out of contact range by near light speed though a few may be zooming alarmingly nearer.
Over the course of deep cosmic time it seems incredibly unlikely that a species we could detect would be active at the exact same time as us. Billions of civilizations may well have existed, just at the wrong time/distance.
Thanks for the excellent video Paul....
Shoe🇺🇸
For a second i read that as "extra testicle"
An unmentioned issue is signal attenuation. Sure, we've been sending radio signals out for more than 100 years now, but due to signal attenuation those signals are not detectable at that 100+ ly distance. Our own signals are pretty much undetectable at distances greater than around 6 ly, as as we improve the efficiency of our electronics that distance is *lessened* not increased as we don't need to broadcast using as much power as we did in the past.
Long ago I took a course from Frank Drake and one of the things he proposed was that as a civilization advances it becomes more and more quiet, therefore harder to detect. As simple example of this idea is moving from broadcast TV to cable TV; the former you can detect remotely if you're within the signal attenuation bubble, the latter you cannot.
The problem with this is that any alien finding our signals would ignore them because they are also searching for intelligent life.
SAVE MY ACHING SIDES!
@@DavidCowie2022 You know how I know that the people who claim they were abducted are lying? Because aliens lock their doors while speeding thru our neighborhood. You didn't see Oumuamua slowing down to ask for directions or teach us a new ringtone, did you?
2:59 BANANAMAN!
Alien 1: "So, should we contact the hairless apes?"
Alien 2: "No, they are still putting pineapple on pizza"
Great comment / swipe. Nice.
Nice video as usual. One small correction: the first person who was mentioning the big bang was a Belgian catholic priest, Georges Lemaitre.
thanks for video
While Seti looks for narrowband signals, Shannon proved ultrawideband signals travel with the lowest energy-per-bit (In other words, with the most efficiency). Seti's wasted decades looking in the wrong place.
you and anton are on the same wavelength. love seeing this topic! people tend to write off looking for life because of the statistics when the actual evidence says it's empty out there. that's the fermi paradox. where is everyone?
maybe the great filter is how we go about answering that question. I say we start acting like we're the first life that has any chance of surviving off planet and make it a certainty. go from there.
I saw a great lecture called "why we might be alone" its really worth a watch
Victorian: Oi, wos tha'? Got pictures on it?
Me: Yes.
Victorian (winking): Got some saucy ones, does it?
Me: More than you can literally imagine.
Might be a little petty of me but I particularly enjoyed the subtle dig at Musk and Zuck.
The Arecibo won't be rebuilt, it won't be up and running again...
Inhabitants of other worlds found UA-cam, and decided to listen to tunes, laugh at the antics of cute kittens, and watch videos on Star Trek, Harry Potter, the Lord of the Rings, Star Wars, and similar.
A couple species have been studying closely our military technology . . . .
LMAOOOOO
The last line as well as the funding comments hahahahahaha
Please do a video on underground nuclear testing!!!
Hah. That exit statement was a hilarious bitch slap.
6:02 while it's true that the antenna is a product of wavelength, also is true that signal loss over distance decreases with inverse square law.
It's very beneficial to have as big reflector(dish) as possible to maximize sensitivity (gain of the antenna). Therefore the advantage of using small antennas is wrong here.
-last year PhD student of Physics (playing with microwaves)
1 - We have only been listening for general radio signals from other civilizations for less than 100y out of 13,800,000,000y.
2 - SETI primarily hopes to pick up powerful radio signals from Kardeshev-III civilizations because we could hear them with our equipment at long ranges. I wonder if any such civilization would even use radio.
3 - I think interstellar communications are most likely going to be by laser.
4 - Can anything we use to listen for alien radio signals pick up lasers of radio frequency?
5 - If aliens are using lasers above radio frequency, I'm thinking none of humanity's equipment being used to listen will pick up any of it.
6 - There is always the possibility that aliens with a few million years of development could communicate at long range using methods that are unknown to us.
7 - Keep an ear out, but given our microscopic slice of listening time, and the possibilities other communication formats, don't make conclusions about whether there is anyone active out there.
@11:35 how does the Doppler process work to determine the origin of signals, whether they are terrestrial or extraterrestrial in origin?
We need to be searching for alien cat videos. :p