Are Alien "Lurkers" Watching You?

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The search for alien intelligence is usually a framed as a search for life around other stars. But some have suggested that we should look within the Solar System instead - seeking so-called "Lurkers", alien probes sent here to monitor us. Today we explore this interesting idea, the motivations behind it and where we might actually try surveying.
Written & presented by Prof David Kipping
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::References::
► Bohn et al. 2020, Two Directly Imaged, Wide-orbit Giant Planets around the Young, Solar Analog TYC 8998-760-1, ApJL 898, 16: arxiv.org/abs/2007.10991
► Benistry et al. 2021, A Circumplanetary Disk Around PDS70 c, ApJL 916, 2: arxiv.org/abs/2108.07123
Pale Blue Dot NASA JPL/Caltech www.nasa.gov/feature/jpl/pale...
► Benford 2019, Looking for Lurkers: Co-orbiters as SETI Observables, AJ 150, 5: ui.adsabs.harvard.edu/abs/201...
► Hippke 2020, Interstellar Communication Network. I. Overview and Assumptions, AJ 159, 10: arxiv.org/abs/1912.02616
::Music::
Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License (creativecommons.org/licenses/..., or with permission from the artist
► Brad Hill - Fragile [open.spotify.com/album/1QDRub...]
► Chris Zabriskie - Cylinder Four
► Atlas - Waking Up
► Falls - Life in Binary
► Falls - Ripley
► Joachim Heinrich - Cassiopeia
► Brad Hill - A Slowly Lifting Fog [open.spotify.com/album/0i7df7...]
► Chris Zabriskie - Cylinder Five
► Chris Zabriskie - Cylinder Seven
► Joachim Heinrich - Stratosphere
► Indive - Trace Correction
::Video clip credits:: (See bit.ly/3lnqk8j for links)
► Licensed clips via Envato
► PHL @ UPR Arecibo, ESO
► ESA/Hubble, M. Kornmesser
► ESA/NASA/JPL/University of Arizona
► National Space Society/NASA
► ESO/L. Calçada, ALMA (ESO/NAOJ/NRAO)/Benisty et al.
► NASA’s Goddard Space Flight Center
► P. Horálek/ESO
► ESO
► ESO / L. Calçada eventhorizontelescope.org/
► Eameses
► NASA/Goddard Space Flight Center, NOAA, Lockheed Martin
► NASA
► ESO, M. Kornmesser, L.Calcada
► NASA/ESA/M.Kornmesser
► NASA's Goddard Space Flight Center
► NASA Jet Propulsion Laboratory
► California Academy of Sciences
► NASA’s Goddard Space Flight Center
► NASA/Jet Propulsion Laboratory-Caltech
► NASA/Goddard Space Flight Center
► NASA/JPL/SwRI
► ESA/Hubble, NASA, ESO, M. Kornmesser
::Film/TV clips used::
► The Straight Story (1999) Buena Vista Pictures Distribution
► The Truman Show (1998) Paramount Pictures
► Gravity (2013) Warner Bros. Pictures
► Contact (1997) Warner Bros. Pictures
► First Man (2018) Universal Pictures
► Rogue One: A Star Wars Story (2016) Walt Disney Studios Motion Pictures
► Interstellar (2014) Paramount Pictures
► Star Trek: Voyager (Paramount Television)
Thumbnail by pc8650 wallhere.com/en/wallpaper/136...
::Chapters::
00:00 Vistas of Other Worlds
07:52 Imaging via Visitation
11:00 Lurkers
13:15 Sponsorship
14:18 Intercepting LEO Lurkers
16:57 Lunar Lurkers
18:00 Distant Lurkers
21:08 Radio Lurkers
22:46 Flyby
25:49 Concluding Remarks
#Lurkers #Technosignatures #CoolWorlds

[@CoolWorldsLab]

Thank-you for watching and thanks to our sponsors, PIA - head to www.privateinternetaccess.com/CoolWorlds to get complete digital privacy for $2.08/mo. (for 3 years) + two months free. Let me know your thoughts on this one! Do you think the "Lurkers" idea is something astronomers should pursue? Or is our best bet to look outside the Solar System? 🤔

[@jsalsman]

@@hiqhduke where can I learn more about the intergalactic phosphorus shortage? Isn't is produced in ordinary stars and distributed with rocky elements when they supernova?

[@xxchuangtzu6186]

@@hiqhduke And I think Isaac Arthur had an episode on this as a possible solution for the Fermi Paradox.

[@jsalsman]

@@hiqhduke Hossenfelder still prefers particle dark matter hypotheses even after LIGO/VIRGO, doesn't she?

[@jsalsman]

@@hiqhduke I found a 2018 article which reports on two supernovas, one with plenty of phosphorus and the other without, and on that basis people infer a universal phosphorus shortage?

[@JohnnyWednesday]

Given meta-materials, cameras, holographic panels and combinations thereof - offer the plausibility of creating a means of hiding an object across a wide band of the electro-magnetic spectrum? then an advanced civilization would have surely mastered such technology - ergo distance from an observer is irrelevant when it comes to hiding from that observer. Ergo there are probably invisible probes just hovering around in the atmosphere, watching football games, measuring the heights of trees etc

[@DCWilliam24]

Wouldn’t it be great if alien watchers introduced themselves one day and showed us high def video of historic events like the napoleonic wars, early human civilizations, dinosaurs, etc.

[@jonathansheridan9780]

Would pay large sums of alien money for an 8K VR video of the advance of the imperial guard at Waterloo

[@mrexists5400]

@@jonathansheridan9780 i'd pay a ton to see a super volcanic eruption, or the flood volcanism that caused the permian mass extinction, and the chicxulub impact

[@soulofjimi]

@william sands I think if we found the alien watchers, we’d then see that they weren’t built how history teaches they were built! It just doesn’t add up!

[@siroswaldfortitude5346]

The birth and life of Jesus would suit me just fine

[@siroswaldfortitude5346]

@@soulofjimi yep quite possibly...

[@edwardrivera4730]

I love that Arthur C. Clarke described the concept of his alien monoliths on our moon and around Jupiter as some kind of cosmic burglar alarm system to alert their builders as to when humankind had become clever enough to escape Earth and discover them.

[@TheSilmarillian]

And the Rama appeared to have a closer look , thing with Rama was that every thing that was inside was in threes for redundancy , another two to follow would not be surprising . May I suggest City and the Stars another of Clarkes classics and 2 me one of the most profound. Know comment is 9 months late but then again the Universe is somewhat of a large place.

[@TheDragonCat99]

Imagine we actually found one of those probes. To the aliens it’s probably the same reaction we have when animals look straight into our hidden cameras, except more intense since we’d probably start dismantling it.

[@wildnhairyone1632]

OMG thats exactly what the Alien Watcher said happened when he met Elon!! Said he stared at him didn't smile or anything and one eye twitched as he rolled a brain chip between his fingers! Alien Watcher said " I ran like hell!"

[@user-nu2pj2ch7t]

Ever heard of the black knight satellite? Worth a google search!

[@visassess8607]

@@wildnhairyone1632 Those damn 5g brain chips will get you

[@SilentKnight43]

@@user-nu2pj2ch7t Urban myth with no credible evidence to support its existence.

[@wildnhairyone1632]

@@visassess8607 looking anytime for it but think I'm faster than he is

[@Claire-77]

As a lurker I'd like to say thanks for a very enjoyable video

[@stargod3064]

“The Lurkers” That would make a great title for an alien movie 👽

[@fiveonthebeat4654]

Definitely lol can’t wait till the world opens up about the extraterrestrials they’re in communication with on the regular

[@keys72]

StarCraft movie

[@kevincarlson4562]

Hah,there was an old English punk band called the Lurkers too.

[@iamBlackGambit]

What would the rating be? 🤔

[@connorwatson7066]

The floaters

[@puravida809]

The funny thing is that we can spend a lot of resources on guessing yet "they" might be here now but not fit into our conventional logical parameters and be completely undetectable or even unthinkable by our sensory frame.

[@lorenzovillegas2457]

psychedelic's may be a key for perception

[@notstampgoat]

Imagine if they were 4d somehow, i'd be basically impossible unless they for some reason went into the 3d realm, the thing we would see would be so distorted and just literally phase out of existence idk if it would even be useful info

[@sparkymist]

Far enough in the future, tech would look like magic to us.

[@sgt.averyjohnson8395]

@@lorenzovillegas2457 okay Joe Rogan 😂

[@lorenzovillegas2457]

@@sgt.averyjohnson8395 Rogan didn’t start talking that shit until I mansplained him after taking a heroic dose of peptobismal. Now joe is awake, and the rest is history

[@Kadath_Gaming]

Now I'm thinking about a type 3 civilization building a telescope array using the lensing effect of a black hole to observe the entire universe.

[@LesPiecesDuPuzzle]

From the interferometric solution stand, it might be even insufficient in size, if I've understood well, have I?

[@cobanus2862]

No such thing as type 3 and never was or will be. Technology has hit its limits.

[@DendrocnideMoroides]

@@cobanus2862 what are its limits? and why do you think that those are the limits?

[@Cyclops_Unibrow]

​@@cobanus2862 What makes you think technology has hit its limits?

[@ralph3333]

​@@cobanus2862 Aren't u late 4 ur clothing optional drum circle session? Btw, if that's what u do with ur cob, don't invite me to dinner.

[@rlundquest]

"Instead, we might discover, it is the journey itself that defines us who we are" I thought this was a great sentiment. I have always dreamed of other worlds and hope one day, before I die, that I will be able to observe one outside of a dream.

[@tarak3439]

This was the smoothest VPN ad integration I've ever seen haha

[@ztrussell]

Even the alien lurkers signed up for it!

[@leaky3955]

@@ztrussell They're using it to make it look like they're monitoring us from the EU.

[@THX..1138]

Yeah I nearly broke out in applause.

[@jack1701e]

Yeah! I was wondering if it was going into a VPN ad before it became one, silky smooth.

[@mistaajones]

Answer to the title: Yes. Zuckerberg is always watching.

[@patrickfle9172]

Except... 😁

[@STriderFIN77]

Yes,

[@tonyhawk123]

It would be satisfying to see aliens kidnap Zuckerberg to probe him. Just so long as they don't return him.

[@annedrieck7316]

Zuckerberg is a forgotten relic leftovers from cretaceous period.

[@mistaajones]

@@tonyhawk123 Better watch your back or else he will abduct and then probes you

[@johnmcglynn4102]

Thank you for a very reasoned and thoughtful examination of this subject. Excellent video !

[@frankf1095]

Once again, an absolutely amazing production Thank you for enriching my life.

[@dinodude6992]

Alien: how did you find us? Human: uh... we're quite as shocked as you are... we just thought this was an asteroid.... and decided to go mine it

[@rodneyginokc]

Avatar much

[@jackjohnson7163]

@@rodneyginokc avatar was based on our disgusting human ways, so yeah that’s totally possible 🥴🤣🤡

[@andrewwells3715]

Maybe, an alien race somewhere is receiving live feed of us from thousands of years ago. They're learning more about us, about our past, than we know ourselves.

[@charlesphillips430]

Don't be surprised

[@loopmantra8314]

If by "live feed" you mean chemical signature of our atmosphere at that time, then yes. Highly unlikely mind you, couple thousand years is too soon, and there are only milion or so stars in that thousand light years radius around us, though that might seem as much, chances of any complex, multicellular organisms, especially advanced civilization living on any of those worlds are pretty slim unfortunately

[@tonyhawk123]

The bit i find more intriguing about long term alien surveillance of us is the prospect of them beaming the data back to us. Imagine seeing the full timeline of humans moving out of Africa.

[@zsaxeshed5743]

They look here from 65 million light years away,see dinosaurs,f that place haha

[@DMT768]

Maby we are the aliens, maby our future self’s found a way to time travel 🧭 and it’s been us watching the whole time

[@kevinashley478]

13:20 HOLY SHIT! LMAO. That was the smoothest transition to an ad I have ever seen.

[@beezneez2056]

Fantastic presentation! I can’t believe it took me this long to find you. Subscribed

[@andyyang3029]

Amazing as always. I'm working on my phD in a different field, and this channel keeps my childhood fascinations alive and reminds me to think in a scientific manner. Some of my favorite memories are looking at our moon through a backyard telescope with my dad when I was 7. He pointed the telescope at the street light and told me it was Jupiter 😂 great times.

[@philschuler9674]

Those are great memories, now a part of your life.

[@andyyang3029]

@@philschuler9674 Yes they are great, I was fortunate to have a family that raised me with a curiosity about the world :)

[@bmoneybby]

i went to college for something I didn't care about. Big mistake

[@jlynchy156]

And why did you have to say “ I’m working on my phD in a different field”??? Doesn’t make you look good by saying that makes you look like an argue clown trying to brag on something no one even cares about…

[@lincabe321]

@@jlynchy156 calm down man

[@hylacinerea970]

the amount of money i’d pay to see an alien meme deciphered from their lack of vpn usage is laughable

[@seanstenson2835]

That transition from vid to sponsor was seamless. Well done.

[@katieo5534]

Just came across this channel. I love the format, I love the presentation, I love the content! Already 3 deep in, and looking forward to more! Thank you to the Cool Worlds team! :)

[@gorilla1871]

I found this channel yesterday and have been binge watching all the videos

[@clintonjbanks]

I took 2 tabs of LSD back in 2017. I sat on my lawn chair in my backyard and watched the sunset and it was beautiful. I was 4 hours in and peaking hard. The sky was collidescoping into different shapes and colors. As the night sky set in the shapes faded and I started to notice a hexagonal energy grid appear slightly in the lower atmosphere. The more I watched the more vivid it became. Then out of nowhere I started to see UFOs flying in and out of view. It was the craziest moment of my life. There were so many of them and it was almost like I was looking at a structured outer space highway. They were organized, some stopped and flew down into our atmosphere than zipped off at an insane speed. It spooked me out. It was like they were admiring the view of our planet. I even saw a couple fly down and connect to the hexagon grid In the sky. It was like they were taping into the energy grid to charge their ships!!!! Man that was the most insane trip I ever had and changed my perspective on aliens and UFOs. I truly think they are advanced enough to cloak themselves and visit without us noticing unless they want us too. I also feel like psychedelics allows you to perceive them in different wavelengths!

[@RowdyBoy82]

We need to kick it, bro.

[@bruhdabones]

I really wanna try doing that under the stars sometime

[@nnoffuture]

Lol na bro it’s all in your head

[@clintonjbanks]

@@nnoffuture sure it is. Just like YOUR entire existence………it’s all in your head.

[@sandeofficial7217]

@@nnoffuture It is quite possible too see in different wavelenghts in LSD’s u do know that your senses, eyes, ears, brains etc are 60%more active ”in use” at the trip mate ? Ofc there is no evidence that it is the case on the trip, but u just can not denie it’s possibility without the evidence.

[@Aeoleous]

I consume a LOT of science content but this is some of the BEST! The script writing is elegant and simple. The logical outlay is perfectly formulated. The delivery entices a sense of calm wonder and reflection. This guy would be my nominee for a motivational speaker if your audience was too smart for dopes like Tony Robbins!

[@lescobrandon6369]

So then i watched Pinocchio and the Easter bunny come flying over the wall with Megatron and Thanos hot on their trail and let me tell you they looked pissed off!! Luckily, Peter Griffin and the chicken were having another epic battle and somehow our heroes escaped unharmed. Crazy right?! Oh yeah, and there were also secret aliens and stuff but don't tell anyone.

[@lescobrandon6369]

Anyone else remember when Dumbledore Calrissian did the Keebler run in 9.2 parseps?! I do, his passengers included Harry Baggins and Bilbo Potter and the ship was called the Enterprise. The personal vehicle options included the scooty puff senior for those who needed a little more room and also the scooty puff Junior for those in a sporty mood!! Merry Christmas everyone!!

[@5kMagic]

‘Consuming’ content is an interesting idea

[@rickpearson7943]

This is not science. This is speculative science fiction.

[@chameleon47]

This is NOT "science content". This is "science fiction".

[@P13N5]

Best video on YT yo go to sleep to. Dude your voice and diction is just so perfect for falling asleep to. Thank you!

[@giovanni4086]

Tears at the end.. really. Thank you.. please never stop

[@MarkMichalowski]

That must be one of the smoothest, most seamless slides into the video's sponsor :)

[@glitteringsunshine4306]

I believe the marketing technique is called "product placement".

[@PatThePerson]

The aliens are watching you… just like you can be watching your army take over everything in RAID SHADOW LEGENDS!

[@Titanic_Tuna]

Whether you're alien or human... Manscaped has got you covered...

[@MarkMichalowski]

@@Titanic_Tuna LOL! Although the asexual tarantula-prawns from Proxima Centauri may stare at the ball deodorant in complete bafflement.

[@jackjohnson7163]

And when your looking at the moon, Rosetta Stone can help you learn any other language you wish to learn

[@Conmac1888]

This man is a proper official scientist and he's giving us all this content and education for free. Outstanding.

[@scroopynooperz9051]

Following in the footsteps of the great Carl Sagan, who got the ball rolling with his lifelong focus on public education.

[@TheJCJexe]

Nothing is free, you still pay for your internet to see this video.

[@Conmac1888]

@@xjohnny1000 Pay for this right hook ya specky clown

[@ro77en5oul]

Love the content Wish you the best of luck for the future including editor's 💯🔥🖖👽🏴󠁧󠁢󠁥󠁮󠁧󠁿

[@dr.skulhamr3220]

Fascinating and thought provoking my friend. Thank you.

[@3dfxvoodoocards6]

When we look at the stars we are like gold fishes looking outside of the aquarium

[@ericklyne5621]

You mean "when "YOU" look at the stars, you''re like a goldfish.

[@3dfxvoodoocards6]

@@ericklyne5621 nice that you perfectly understand whats going on in the univers. Congratulations !

[@laurasfar18]

We are only at the very beginning of exploring the universe. So yeah, goldfish is what we are at the moment.

[@ericklyne5621]

@@3dfxvoodoocards6 First you try and speak for others about looking at the stars ...and now you incorrectly assume what I know or don't know about the universe? Do you always make blind assumptions about everything?

[@davecasey4341]

Good morning, Goldie.

[@meetthecassiani]

Dave has the best music and the best ASMR voice as I drift off into a relaxing place. Thanks David.

[@Genious_Trades]

I think it’s important to begin taking into consideration that any alien technology that may be out there, may not operate the same way our tech does. It is plausible to assume that alien tech could be much more powerful even at a size of 10 cm. Just a thought.

[@b3at2]

!

[@alandouglas2789]

Maths is universal…

[@alandouglas2789]

You watch to many marvel movies that hand wave bullshit and call it “alien/nano/quantum tech”

[@alasdairgriffiths2450]

What an interesting video, great presenter and stuffed with actual information. My brain hurts!

[@JonnoPlays]

You know disclosure is coming soon when the alien videos include paid promotion...

[@niksmoret2744]

They using amazon too🤤😆

[@SIRKONGLA]

Knowing that you know nothing is true wisdom.. cant see any wise ppl in this chat

[@SIRKONGLA]

@S. M. I belive exactly the same thing as you bro🤙 but I belive , we still dont know for sure.

[@geoffrogers7590]

@S. M. A healthy dose of scepticism is a good thing. Going, this thing is unexplained so it must be aliens, is not that. It's exactly the same line of thinking the religions are built on. What's the difference between you and a Christian? You can't "god of the gaps" stuff then tell everyone else they should question stuff more. It's one or the other. Either people should question stuff more. Or they should believe the completely unprovable stuff you do. There is zero evidence that proves and of those things were aliens, or that any of those stories are even literally true. More likely they are a series of allegories and exaggerations that happened over time as those stories were passed down over the centuries.

[@fidelogos7098]

What if aliens have a KZbin channel? 🤣

[@martinwhipkey9343]

I love your logical and concise approach to these types of topics. Your videos are very well put together and pleasingly educational. Thank you!

[@LegendaryMedia365]

New subscriber here. I've been binge watching your video's and I'm hooked. Have you watched the new movie Moon Fall? I have always wondered if that was possible or true. Only because of before that movie on 2 different occasions there has been documented moments that the moon rang out like a bell. Could it be?

[@patrickweston4131]

Once again, Cool Worlds has rendered my mind "blown" 🤯. Kia ora cuzzies 👍

[@madhuragrawal5192]

The calmness in your voice makes the lesson even more inviting🙌 I aspire to be a part of your team one day.

[@nikolaydimitrov7701]

Oooo he liked your comment. You better do your best now - go for it.

[@lorriecarrel9962]

It sure does.

[@tonyhawk123]

He has a voice made for the telly. Shame about the face! Just kidding. Wouldn't be out of place presenting science documentaries on the beeb. We need more Brian Cox's to advance the public understanding of science.

[@madhuragrawal5192]

@@nikolaydimitrov7701 Sure Buddy!

[@mandarhulsurkar7840]

Me too. I would love to work with him. My personal opinion is: he is second best Science communicator after Carl Sagan

[@badendhappy2903]

That's the smoothest transition from the subject to a sponsor I've ever seen. :D

[@DecemberNames]

Thank you for another great video brother

[@scottbromage2210]

I think the "black knight" is one of the "probes" monitoring our planet for thousands of years. Seeing how it emits a translatable frequency as well! Hummm! This is awesome! Thanx for the upload

[@darkmatter6714]

With Dolphins we are starting to decode their language. Experimenters are building a map of their sonar emissions. They are given objects of different shapes which they zap with their sonar. The echo signature is then recorded and then reinterpreted visually using software to create the shapes originally zapped. These sounds are then recreated and zapped back to new dolphins who have never seen these shapes or heard the echo signatures relating to them before, yet when they hear them, they go towards the object. We are understanding now that Dolphins literally speak in 3D. It is hoped that we can build enough of a database of sound and their corresponding shapes, to be able to combine elements of the sound signatures to create any shape. Conversely, it is hoped that we can record their chatter and visualise them to - literally - “see” what they’re saying to each other.

[@phoenixdavida8987]

that's so fascinating!!!

[@lukegrove7377]

One of the things that not many people know about the Star Trek canon is that dolphins were members of Starfleet :-)

[@andura_1]

Sources? This is interesting

[@andura_1]

@@blokin5039 why so rude

[@darkmatter6714]

@@andura_1 A documentary on Curiosity Stream called Operation Doolittle

[@TVaz7777]

It is possible, though. Much older civilizations might have technology incomprehensible for us in our current state of development. Might be something like trying to explain a stoneage person how a cellphone works. Who knows what technology they own?

[@Razmatazuk]

Exactly, we simply have no way of knowing what technology they have and are using. Maybe they are here watching us already, but are invisible to us

[@TVaz7777]

@@Razmatazuk indeed. We tend to imagine older alien civilizations owning the technology we expect to achieve in a near future. But their technology could be indistinguishable from magic already. In a way that things we imagine being impossible, like faster than light travel, might be basic technology for them.

[@annedrieck7316]

@@TVaz7777 xenoblade😊

[@Cardan011]

It would literally take 15 minutes to explain “Stone Age man” what cellphone is. You idiots think that anatomically modern humans from Stone Age were bumbling idiots. Before you know it Stone Age man would be glued to cellphone watching Tik Tok videos of dogs and booty twerking.

[@kazedcat]

I don't believe in infinite technology advancement. We are already near the peak of what is possible in technology. Your cellphone are already using materials only several atoms thick to store information. There is a physical limit to technology and the ceiling above us is not very high. There is not much room for improvement beyond single atom transistor.

[@wuodanstrasse5631]

Sir: Thank you so very much for all of your very intelligent videos.

[@MrSabotage83]

When the notification pops up on my screen about a new CW video, I get excited and want to stop whatever I am up to. Especially when it is almost a half an hour one. This one made me want to watch Start Trek series all over again. Thank you for this cool episode once again. Cannot wait for the next one! Until then stay thoughtful and stay curious and of course live long🖖

[@ButterflyAngle12]

This is amazing. I could just sit here and listen to this all day long.

[@slevinchannel7589]

Mind if i recommend my fellow Science-Fans some Stuff? Science or just Education in General or even just Fun in General?

[@ButterflyAngle12]

@@slevinchannel7589 huh

[@tr7938]

Not me.

[@MontaAnd1]

Haha it's interesting that he says "fleet" at 23:26. Reminds me of that pentagon video where the pilot is saying "there's a whole fleet of them!"

[@Jackcrow955]

Amazing thank you so much, wow that's hard to see thing's. Subbed you.

[@thekingsdale2899]

The only channel I watch when I'm bored. You turned science into live art! Fan for life 👌🏿

[@mattsmith5421]

Maybe you would like David Butler too

[@The_100_Percent_Level_Universe]

I am quite certain, this guy will be invited into one of their ships someday. His brilliance is undebatably deserving and worthy of a seat. See ya there my friend!

[@niksmoret2744]

So..tht makes you 2nd seater🤔😉😆

[@niksmoret2744]

@@The_100_Percent_Level_Universe yea..you just confirmed my statement mate😉😆

[@annedrieck7316]

I wanna hitchhike too into their spaceship

[@formernavyspook]

I guestimate 600-700 million seats...the minimum number of people needed to seed a spacefaring civilization.

[@formernavyspook]

@@The_100_Percent_Level_Universe As an initial group to take the message worldwide... 🤞

[@aaronjohn533]

I feel asleep listening to this. Great content + a relaxing voice.

[@susandarber9942]

Concerning the o muamua probe scenario: this rotational movement could be interesting to observe all objects of our solar system. Why would they know we're here? And even if they do, would they know on which planet we are? We consider they know we're here and where, but what if, they simply are observing nearby solar system as a scientific purpose rather than lurking on us. On this case a 20 m resolution on planet earth might be enough for them to identifying what our solar system planets look like..

[@LemonLadyRecords]

I appreciate your dissection of the optical requirements in this scenario. I have to say I certainly wondered when I saw the title of this video! Great info and perspective, as usual.

[@johnfkennedy8281]

One of the few channels I support so I bought a shirt. Something about your work makes me feel depressed yet hopeful. And that's the beauty of your art. You make me feel. Thank you

[@gappuma7883]

Believe in the soul and life after physical death

[@11nephilim]

I actually find this pretty encouraging. Sure, we aren't ever going to be able to remotely image individual alien organisms, but being able to image large collections of organisms (the alien equivalent of forests or even massive algal blooms) seems like it will be possible eventually.

[@L3tharge]

What about an atmospheric alien device, which orbits within our atmosphere? Maybe they use a different propulsion system that works very efficient - recent event have shown us that even the US Airforce didn't know about everything in our airsprace. But for telescopes outside our atmosphere I don't see a way either. Awesome Video :)

[@revmatchtv]

Thanks for giving us another superb video expanding our personal understanding and horizons. I’ve been fascinated by these questions since I was a child, and your explanations and delivery are top notch!

[@StarWarsJay]

Who’s to say a given alien species has eyes and uses light as information and if they did, they may have ways to watch us that we can’t even imagine with advanced technology that to us, is indistinguishable from magic as Clarke said.

[@laz001]

This is a good argument. @cool worlds - what are your thoughts about aliens being able to observe in other formats? Just as we are now just beginning gravitational observation, maybe aliens have advanced it, mastered observation of other types of energy or fields? Neutrinos, dark matter, other force carriers that we don’t even know about that convey much more information than ‘electromagnetic’ energy.

[@nom6758]

@@laz001 you dont know how the @ function works, do you?

[@laz001]

@@nom6758 lol, not a clue

[@michaelskywalker3089]

You bring up an essential point not covered adequately in this video.

[@StarWarsJay]

@@michaelskywalker3089 cheers Michael. I’ve just always thought that judging an alien species using our own biological standards could be a tad “pre-Copernican” if that makes sense.

[@TheRealFauna]

I liked and subscribed, ok? I like the mystery here!

[@PDoughboy22]

Damn. This was the most clever VPN ad I've ever seen.

[@eddiec4536]

So interesting and well explained of the difficulties in seeing the surface of other planets. I enjoy my imagination of what is out there and that is good enough for me.

[@petrusdecourtrai]

honestly, this is probably the very first time I found advertising tolerable. That does NOT mean you people should double the ads next time :p Thank you for delivering quality content. Watching this was a delight.

[@temerodiavolo470]

what a smooth ad segue!

[@johnmichaelireland]

Fascinating, Makes my head go on a tangent, Observe from a different perspective.

[@CRSutherland]

I get so hyped when I see a new Cool Worlds post! Thank you Kipping and crew! Hope you all have a wonderful weekend! Stay curious

[@bariizlam638]

Dr. Kipping, you are a genius, an excellent story--teller and focus on physics regarding amazing topics! Love your channel and thank you so much for sharing your immense knowledge with us! All the best in your future work!

[@lescobrandon6369]

So then i watched Pinocchio and the Easter bunny come flying over the wall with Megatron and Thanos hot on their trail and let me tell you they looked pissed off!! Luckily, Peter Griffin and the chicken were having another epic battle and somehow our heroes escaped unharmed. Crazy right?! Oh yeah, and there were also secret aliens and stuff but don't tell anyone.

[@lescobrandon6369]

Anyone else remember when Dumbledore Calrissian did the Keebler run in 9.2 parseps?! I do, his passengers included Harry Baggins and Bilbo Potter and the ship was called the Enterprise. The personal vehicle options included the scooty puff senior for those who needed a little more room and also the scooty puff Junior for those in a sporty mood!! Merry Christmas everyone!!

[@bariizlam638]

@@lescobrandon6369 bot shit!

[@Durcy]

@@lescobrandon6369 man what

[@lescobrandon6369]

@@Durcy exactly lol 😆

[@adbuuk]

I always pondered... Thanks.

[@FreedomTalkMedia]

"Lurkers" sounds like a great title for a movie about the earth being probed by aliens

[@npalmi88]

This is something (viewing aliens via telescopes) I’ve wondered for a long time, great video 👍

[@pritishpatil7659]

13:00 transition to sponser was so smooth I really thought you are still talking about alien privacy

[@The_Primary_Axiom]

God damn that was one of the best segues into a sponsored ad I’ve ever seen. Lol

[@pattef]

I have a question: Given the challenges you described in telescope size vs resolution, how feasible would it be to artificially increase mirror size by using individual mirrors (for examples sake, one of the hexagon mirrors on the JWST) but on the end of tethers/telescoping rods all around a single axis but at incrementally longer lengths, around that same axis where the photoreceptor of the telescope would be. Kind of like one of those planetary models but instead of a sun, you have the receptor and instead of planets, you have the mirrors at those variable lengths. Would that ultimately create a higher resolution if given a longer observation time to accumulate more light from the observed point in space? I ask this with the idea that one could make a telescope with an adjustable lens size on a single device while including some of the same techniques used to capture the image of the black hole but on a much smaller scale obviously.

[@user-ot7jd9dt7t]

Yes.

[@shannonnicollechannel5884]

This voice...helps me drift off to sleep when the world has been to chaotic 🙏

[@isthislive464]

Oooh love the Straight Story clip at the beginning

[@MegaJessejames91]

I think that if they have found a way to get close enough to us to take a "picture" they would have already moved beyond using lenses. I'm imagining they would have something like a reverse laser, something that is able to gather photons extremely precisely, Something else, do they even have eyes that see light in the same spectrum that we do? Do they even perceive and process light in the same way? Any alien technology that would be able to monitor or interact with us would be so far beyond our understanding because the civilization that created it would be FAR beyond where we are technologically.. like, thousands, millions or even billions of years ahead of us.. AND the beings that created it could've followed a much different evolutionary path that we don't even recognize them as lifeforms.

[@AdiusOmega]

Are they even on the same plane of existence as we are, what all do we know about what defines intelligence or thought? There is still so much to learn about the universe and we are still debating things like how matter works and operates.

[@remiscott7759]

They communicate with psychedelics.

[@AdiusOmega]

@@remiscott7759 That's pure speculation. An interesting thought and idea that I think deserves extensive research but unfortunately things of that nature are not well understood yet.

[@prototropo]

“The journey itself defines who we are . . .” Yes.

[@Laurasiana]

I once asked Seth Shostak about the possibility of detecting an object of alien origin on the moon. He said that sure, we have a vast trove of photos. But there’s a lack of money to pay a dedicated staff to look through them. Just having the photos doesn’t mean having an answer. Sounds like a potential citizen science project to me.

[@peterkelley6344]

I can see that going awry really fast.

[@z-beeblebrox]

@@peterkelley6344 It'll be the face on mars all over again

[@nickmontanaro9638]

You wouldn't have to pay a staff. Thousands would volunteer for free amd simply work from home in their spare time.

[@andrearaimondi882]

The operative part here is "to the best of our knowledge". The defining issue here is that a truly advanced civilisation would run circles around our knowledge. Cheers

[@annapetrosian4786]

Stunning

[@RK-lp5pc]

These are interesting toughs. The problem with this kind of speculation is that we are all guilty of the same bias. When we try to imagine what a supposed alien civilization might or might not do, we tend to restrain ourselves to our current understanding of the laws of physics. Yet, the fathers of general relativity and quantum physics have taught us that our comprehension of these laws (and more broadly of the nature of reality) at any given time is partial. There most certainly is way more to physics and to the nature of the Universe than we know, or even than we can imagine. Let's say that there is at least one alien civilization in the Universe being aware of our existence. They might be thousands of years ahead of us, if not more. I don't think there is any way at all we could speculate what they are capable of and what they know about the laws of the nature that we totally ignore. It's nice to let our minds wander and try to rationalize, but when it comes to hypothetical alien civilizations, we should stay very humble about what we know and what we don't know. There is way more of the latter than of the former.

[@frutonana]

Totally correct. This video put humanity in the place of an alien civilization that sends a satellite to a foreign planet with the expectation of being unseen.

[@Danmark35]

Yes, exactly!!

[@vernym4164]

lmao redditor

[@SinopsisLovesYou]

and dont forget that just as aliens could be millions of years ahead of us they could also just as easily be millions of years behind us. Its not unlikely that we are the first life form to have advanced this far. Maybe all thats out there right now are simplistic microorganisms.

[@essb5019]

No

[@ponyote]

The one problem I have with this - completely as a devil's advocate - is the anthropic bias inherent to our visible wavelengths of light. We see such a small fraction of the electromagnetic spectrum that it's truly amazing, but we assume that other creatures in far-off places have evolved optics in the same way. But, well, we only have this tiny sample size. Which is really why we're all watching these videos. Keep up the awesome work, David. Thank you!

[@UtubeAW]

Kipping will lose his damned mind when he hears about Santilli’s finds w/a concave lens telescope!!! 😂

[@paulrosa6173]

Omuamua sounded very like Arthur C. Clark's Rama. I read that about 20 years earlier than when that asteroid appeared. I think Clark liked Kubrick's gorgeous imagery in 2001 a Space Odyssey so much he tried to write a nook designed mostly for the visual effects. There wasn't a lot of drama in Rama.

[@glennsmith64]

Neat !! When I was a teenager I would pretend to be a" Lurker" around my neighborhood. Peeking in windows at night and taking the odd item from clothes lines. They said I was a weirdo but who's laughing now ? I'm even gonna get my attorney to demand they change the language of my charges to " Lurking" , sounds cooler than " stalking" and way more accurate. Gotta run , it's getting dark.🛡🤠⚔😚

[@oldschoolblue7806]

Wow that is amazing!

[@jedi4049]

You put thought into these videos.

[@jabatheshort660]

That was the smoothest ad transition I’ve ever seen. Magnificent

[@ianhopcraft9894]

Thanks for this latest video. Great stuff. These subjects seem far fetched but always trigger new ideas and questions. What a time to be alive! Will you do something on the JWST after it is launched?

[@evilparkin]

6:20 "the animals... produce such a POULTRY number of photons" Nice ;)

[@lowmax4431]

That was by far the sneakiest transition into a sponsored segment I have ever seen.

[@defective6811]

I'd imagine that the mission of a Lurker would change with time. Presuming they caught our bio and tech signatures around the industrial revolution and were able to get a probe here in time, they could observe us in high detail for quite some decades and watch as we build our space exploration to the point where they might be detected. Then they might move far enough away to prevent that while still being able to monitor our electromagnetic signatures and watch us grow into a space faring species - since they'd already be here. Being unable to "read" those transmissions does not mean you cannot glean information from them.

[@jimmielittle877]

Unless another test site took up their attention and we were relegated to a backup site of study?

[@Chris.Davies]

Weird fantasy you have there.

[@dustingaethje1332]

Or...they are waiting...waiting for us to reach a level of advancement that may challenge them if left unattended for a couple of decades / centuries, at which point, they would act immediately to prevent such a situation

[@defective6811]

@@Chris.Davies ?

[@chameleon47]

Or maybe, humans really are not that advanced or interesting enough, so that nobody would ever bother.

[@peterb9038]

Thanks you for the video, Professor. Your statement about Omomura got me thinking, that a space probe would most likely be set to tumble to do a full sky survey, any sensor system could be gimbled and paired, which leads to a thought. Maybe a method for detecting visiting probes would be to analyse the rates of rotation of any interesting objects and see if it fits a pattern that would meet the needs of a full sky survey? That sounds like an easy win as getting that data on asteroids is pretty useful in itself anyway.

[@PsymonBeesley]

I’ve only just found your channel and the videos are great.. I think I’ve just found my latest rabbit hole to get lost down! However I do notice that the assumption is any lurker would need to capture the same visible light spectrum that we humans do.. how would the profile of the probe needed change if, say, the aliens could see more into the ultra violet or infra red or maybe even use sound waves rather than light to interpret their surroundings?

[@CoolWorldsLab]

Well the Earth is extremely faint in UV so that would be worse. Infrared has longer wavelength so worse spatial resolution, so also worse.

[@owenspears8662]

Smooth advertising transition snuck in there.

[@rufus525]

the tidally locked surface of the moon facing us would be a great spot for say 3 camouflaged mini telescopes working with interferometry and spaced over almost the whole diameter of the moon

[@comradeweismann6947]

Thank you for another wonderful video professor! And thanks to everyone at cool worlds lab as well !

[@aarongerwig911]

They are and have been watching, much more than that. I was gifted or something like that in 2017 for about 10 days. During that time I was allowed to see and feel our world as it really is. I know this sounds crazy, but it unlocked my mind. During that time I functioned normally, but my mind was in a fog, I finally asked out loud (by myself) for clarity and woke up in the morning mentally sharp, but the "feeling" was gone. And I dearly missed it. I can only describe it as (corny as it sounds) unconditional love.

[@hirosavage]

Mental illness be like

[@rosediamond39]

Satori 🙏🏻

[@dawsynasay4841]

That’s called LSD. Lay off the drugs kiddo

[@facuufernandezz5070]

can you explain more? how did you feel? what did you feel? how did you achieve that?

[@karlissulcs3822]

Don't do drugs, kids.

[@chancelowery7266]

I see a way around it with far more advanced civilization. Enjoyed the video, which is really informative.

[@cmdrcorvuscoraxnevermore3354]

Thank you Dave for such an insightful video addressing the possibilities of seeing and being seen. The future will be amazing.

[@tonygilliland]

Dr Kipping. I really enjoy your videos and have alot of admiration and respect for everything you post. You discuss or present everything with factual data to back it up. If your uncertain, you give your best educated guess based on data available and most of all you let viewers know. You don't blurt out nonsense that you believe in and make viewers believe it to be real when it's not. I can go on and on but I'm just want to say thanks for being a cool dude with a level head that's down to earth and most of all for being real. Gotta go.