Is Earth Being Watched?

Ғылым және технология

In the last few decades, our astronomical techniques have developed to the point that we can now detect planets orbiting other stars. Planets which transit their star make up most of our catalogs, because they are so easy to find and can reveal so much more information about the planets. For example, in the near future we might even be able to detect life remotely on these worlds. This makes us wonder - could someone out there already be using this method on us? Here, we explore which stars are best placed to detect us using the transit method, what they might learn about us and the possibility of reciprocal transit configurations, enabling a possible means of direct communication across the stars.
Written and Presented by Prof. David Kipping. All planet images/videos shown are artistic impressions and not real photographs, except for the pixelated image of TRAPPIST-1 (see below)
This video is based on research conducted at the Cool Worlds Lab at Columbia University, New York. You can now support our research program directly here: www.coolworldslab.com/support
References:
► Rauscher, B. J. et al., 2016, "Detectors and cooling technology for direct spectroscopic biosignature characterization", JATIS, 2, 041212: www.spiedigitallibrary.org/jo...
► Burke, C. J., Mullally, F., Huber, D., 2018, "K2 Exoplanet Ecliptic Survey - KEES": keplerscience.arc.nasa.gov/da...
► Kipping, D. & Teachey, A., 2016, "A Cloaking Device for Transiting Planets", MNRAS, 459, 1233
Video materials and graphics used:
► ESO animations credit to ESO and Herbert Zodet: www.eso.org/public/videos/eso...
► TRAPPIST-1 pixels animation by NASA Ames/G. Barentsen: www.nasa.gov/image-feature/am...
► Transit animation credit to NASA: • Animation: Distant Exo...
► Kepler-1625b-i animation by NASA, ESA and L. Hustak: hubblesite.org/contents/news-...
► Milky Way animation by Stefan Payne-Wardenaar: vimeo.com/330625918
► Earth-Sun orbit animation by Brad Freese: • Earth Orbit
► Breakthrough Starshot animation by the Breakthrough Foundation: • Breakthrough Starshot ...
► Laser transit animation by National Geographic: www.nationalgeographic.com/ne...
► TESS animation courtesty of NASA/MIT: • NASA’s New Planet Hunt...
► Solar activity timelapse credit the NASA/SDO: sdo.gsfc.nasa.gov/gallery/main
Outro music used, in chronological order:
► "Fusion" by Indive, "Halo Drive" EP, licensed under a Creative Commons Attribution license (creativecommons.org/licenses/...)
And also...
► Columbia University Department of Astronomy: www.astro.columbia.edu
► Cool Worlds Lab website: coolworlds.astro.columbia.edu
Latest Cool Worlds Videos ► bit.ly/NewCoolWorlds
Cool Worlds Research ► bit.ly/CoolWorldsResearch
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Guest Videos ► bit.ly/CoolWorldsGuests
Q&A Videos ► bit.ly/CoolWorldsQA
Tabby's Star ► bit.ly/TabbysStar
Science of TV/Film ► bit.ly/ScienceMovies
SUBSCRIBE to the channel bit.ly/CoolWorldsSubscribe
THANKS FOR WATCHING!!
#AreWeBeingWatched #InterstellarCommunication #CoolWorlds

Пікірлер: 1 700

  • @someaccount659
    @someaccount6594 жыл бұрын

    I’m glad KZread (as bad as it is) has become a hub for actually good content now that tv has just descended into hell

  • @khaccanhle1930

    @khaccanhle1930

    4 жыл бұрын

    Don't worry, YT big wigs are working as hard as possible to crush independent content and turn it into a bland network of corporate tripe that you left in traditional TV. No good thing is left untouched.

  • @faihu

    @faihu

    4 жыл бұрын

    Enjoy while it last , The end is nigh.

  • @Metaldetectiontubeworldwide

    @Metaldetectiontubeworldwide

    4 жыл бұрын

    Yeah right but coppa and art. 11 & 13 is spoiling up the party bro 😥😭

  • @zacharycrater2588

    @zacharycrater2588

    4 жыл бұрын

    Sadly they're trying to get rid of channels like this and many many many more. And now if your views dont fit theirs, that's grounds for a lifetime ban. Yep.

  • @prac2

    @prac2

    4 жыл бұрын

    depends where you look

  • @greenflashes6507
    @greenflashes65074 жыл бұрын

    “They don’t know we know they know we know” - Phoebe Buffay

  • @addzz1208

    @addzz1208

    4 жыл бұрын

    Green Flashes my brain hurts.

  • @ozdergekko

    @ozdergekko

    4 жыл бұрын

    Phiiiieeeebeeeee! ♪ smelly cat, smelly cat...♪♫

  • @normancontrol3928

    @normancontrol3928

    4 жыл бұрын

    you know we know they know you know

  • @robinchwan

    @robinchwan

    4 жыл бұрын

    i know they don't know the things we don't know

  • @praamsaga1727

    @praamsaga1727

    4 жыл бұрын

    But now they know!

  • @zacharynapier4038
    @zacharynapier40384 жыл бұрын

    This truly is the greatest channel on youtube. EVER. David is the most informative person you’ll find in media with regards to space, he invented the concept of the halo drive and wrote 14 pages to share it with us. LEGENDARY. Thank you to everyone @Cool Worlds for bringing us such amazing content!

  • @davidwarren2771

    @davidwarren2771

    3 жыл бұрын

    And I'm glad he doesnt fill it with SJW liberal bullshit

  • @joshbreaksk8IN

    @joshbreaksk8IN

    3 жыл бұрын

    There's so many good channels I just found this one but PBS space time is amazing as well along with just ordinary KZreadrs like Joe Scott while not a scientist himself he does videos for everyday people

  • @all0utmetal735

    @all0utmetal735

    2 жыл бұрын

    100 percent agree

  • @kenm1167

    @kenm1167

    2 жыл бұрын

    @@davidwarren2771 physics, and by extension astrophysics etc, is maths based and therefore safe from political manipulation. Even in the USSR, whilst other sciences failed and were repressed by Lysenkoism etc, physics and maths still flourished. It gives me hope. At least, for now...

  • @nicolasuribestanko

    @nicolasuribestanko

    2 жыл бұрын

    @@kenm1167 With regard to Lysenko, geneticists now acknowledge that he was at least partially right... it's now called epigenetic imprinting.

  • @robertmills3830
    @robertmills38304 жыл бұрын

    I am the biggest nerd when it comes to science and universe, and after I got obsessed with vsause a few months ago, I was disappointed to find that he rarely uploads videos now, I'm so glad I found your channel, such great content, you're awesome man 👍👍🤟

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Love Vsauce!!!

  • @metalzonemt-2

    @metalzonemt-2

    3 жыл бұрын

    @@CoolWorldsLab ...or do you?

  • @TROLLDETECTIVE2

    @TROLLDETECTIVE2

    3 жыл бұрын

    @@metalzonemt-2 I've been looking for you all my death 👻

  • @metalzonemt-2

    @metalzonemt-2

    3 жыл бұрын

    @@TROLLDETECTIVE2 Well here I am, floating all over youtube.

  • @darkkitty22

    @darkkitty22

    3 жыл бұрын

    U cute asf

  • @malfaro3l
    @malfaro3l4 жыл бұрын

    I just found this channel today and have been drowning in the sea of amazing content. I’m only sorry I didn’t find it before. Great stuff.

  • @trialsbike2135

    @trialsbike2135

    4 жыл бұрын

    im just doing that now, deserves millions of subs

  • @cribkeys.comchrisb3988

    @cribkeys.comchrisb3988

    2 жыл бұрын

    Good info

  • @EventHorizonShow
    @EventHorizonShow4 жыл бұрын

    Congratulations Dr. Kipping and Cool Worlds team for 100k well earned subscribers!

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Thanks so much!!

  • @theknave4415
    @theknave44154 жыл бұрын

    KZread recommends finally got one right. ;) Subscribed.

  • @alfredotacus8233

    @alfredotacus8233

    3 жыл бұрын

    Same !

  • @K-Riz314

    @K-Riz314

    3 жыл бұрын

    Ditto!

  • @muzkat101
    @muzkat1014 жыл бұрын

    As an armchair astronomer; for nearly 45 years now, I didn't just start out as one because of an interest in planets and stars, and because both Nebula and galaxies were pretty, but more so fascinating to my belief that, we are not alone in the Universe... I have to argue that, deep down inside most astronomers, this too must be their guiding reason for being astronomers. You don't have to be a tin-foil hat wearing Alien hunter or UFO enthusiast to believe that our very own planet may have been visited by our distant cousins, but be open to the fact that we are not the Top-rung of the ladder or totem-pole... not by a long shot. As humans, we have to learn to become more humble in our thinking of intelligence and of our place in the Universe; a place where, intelligent life on other worlds may not be as close-by as we hoped, but perhaps much more populous and but further away than we care to imagine... the absence of observable intelligent life is not the excuse that it does not exist; it merely means, we're not looking at what may make for a good home for intelligent life, despite technology, or our ability to peer deep & far enough out, or in the right place -- it is out there, and it may take a bit more time before we discover it. It will then be, in the discovery, how we will then want to perceive our own life, values, and place in the universe. The fact that not all planets 'Transit' across the face of a distant star from our plane of view, and those that do pass within our plane or transit of view is just a very small percentage of possible habitable planet, but from the stars that have been observed to have transitory planets, it is a good start to realize that our universe is much more filled with potential life-giving worlds than most academic astronomers had envisioned decades past; it is now time for them to face the facts, we are not alone. For now, we can only look as deep or far as, and resolve images, as much as our present technology will allow us to; but astronomy has come a long, long way since Ptolemy, Tycho Brahe, Copernicus, Galileo, and Newton, and it is time for professional astronomers to give up the notion that we're alone, but accept the fact that we are at the midst of finding life beyond our own world... this; not Astrophysics nor Astrobiology, not even Cosmology, but what Astronomy is truly about... the search for intelligent life in around neighboring stars and across the Universe.

  • @revenevan11

    @revenevan11

    4 жыл бұрын

    Beautiful comment, good thoughts and I agree. We'll find them eventually, hopefully sooner than later but there's an element of luck to it as well. Either way the pure desire for knowledge makes these exciting times to live in despite tough current events, as we are quickly accelerating our rate of discovery and understanding especially in regards to exoplanets (and ultimately SETI in general) every day it seems.

  • @sergiodario58able

    @sergiodario58able

    3 жыл бұрын

    Excellent comment and very refreshingly, devoid of any grammatical or spelling mistake, in contrast that is with the majority of English speaking people whose writing blunders are very common. Now a thought of my own. It has been noted by some people in the written comments, that a two way interstellar conversation may take decades or centuries to reach each other. A very valid point. But could it not be that a superior civilazation to ours, could put the beam of light which is carrying informations ment to reach us, through a worm hole therofore reaching us at a fraction of the time? My reasoning is that even for them perhaps, putting a intergalactic space ship through a warm hole would be an impossible task.. But a beam of light? Maybe just maybe!!!

  • @bgtubber

    @bgtubber

    3 жыл бұрын

    Beautifully said! 👍

  • @jonkallas7326

    @jonkallas7326

    Жыл бұрын

    "we are not alone..." This statement is false. We have not found any proof of life outside that of our own planet. I don't mean to sound harsh. You're comment is cool and I respect you POV, but definitively saying "we are not alone" at this point of our discoveries is not scientific. Peace.

  • @muzkat101

    @muzkat101

    Жыл бұрын

    @@jonkallas7326 Thanks for the comment; appreciated and respected. When I say "we are not alone", of course that is not being scientific nor is it supported by a lack of tangible or empirical facts or data. This is of course my opinion and belief. What I base my opinion on is of research that has been done on earth with regard to life in general; of the various extreme and extraordinary low temperature, pressure, and environmental conditions scientists have already found life on earth, and my understanding of the Drake Equation. And of my early teen childhood interests in astronomy and the universe. And while the Mars Meteorite, ALH84001 is still under revue and scrutiny of having micro organisms imbedded within the rock, it is without a doubt the most compelling evidence of planetary evidence we have yet of the potential of exoplanetary life beyond our own solar system. Given the fact since my teenage childhood, I had already made the assertion that planet do in fact orbit around distant stars, then later confirmed, and scientific evidence of planets with potentially habitable conditions on them, it is no longer a stretch of the imagination to extrapolate the belief that life is perhaps far more ubiquitous in nature that not. This is to say, I have the firm belief that life as we know it is not unique to earth but in fact quite regular in regions favoring habitable-environmental conditions that favor life. While it may be a stretch to say there is intelligent life, this has yet to be proven. But to say that life; whether micro-organisms to something similar to pre-history life exists, I have to say it is far more likely that life does exists. While we are still far away from verifying or proving this, I again have absolutely no doubt in my mind that life exists, and it exists all across the universe where conditions permit it to thrive. I think it is better to come to grips with this potential reality than to continue to say we are unique; it would be arrogant to keep thinking along this line. And once scientists begin to reach further and further into space, I am certain they will be shocked and surprised by the findings. My only regret in life is to know that I will likely no live long enough for my belief to be validated and confirmed.

  • @The5thKind
    @The5thKind4 жыл бұрын

    Love your work Cool Worlds. Awesome channel always so relaxing and thought provoking :)

  • @arunraju6875

    @arunraju6875

    3 жыл бұрын

    Hi 5th kind even you guys are awesome ❤️

  • @The5thKind

    @The5thKind

    3 жыл бұрын

    @@arunraju6875 Thanks Arun :)

  • @cliffordnhlanhla5056

    @cliffordnhlanhla5056

    3 жыл бұрын

    The sons of God are there but they are afraid of humanity since they impose destruction even among themselves, destroying the only habitat that give life's to us ....they visit us . The world should be warned to stop testing and destroying the sea's for God says People of this world have became so power hungry for things that's was never their from the first.... stop testing nuclear bombs on the sea's..... Message ..

  • @avedic

    @avedic

    2 жыл бұрын

    I just discovered this channel.....and I adore it already. Watched a couple videos so far. For one, you have such a great VOICE for this. And on top of that you clearly have the knowledge. But I also love how...idk, soothing it all is? It's weirdly comforting to be reminded of the immensity of reality. At least by you. SUB-SCRIBED! :)

  • @johannes.pilkahn

    @johannes.pilkahn

    2 жыл бұрын

    Couldn’t agree more. Love the content, never fails to disappoint. Also, I find “relaxing and thought provoking” a very fitting description indeed. Having said that, why @CoolWorlds, can even you not manage to make titles as descriptive rather than going for click-bait like everyone else? “Is earth being watched?”, really? What’s wrong with “Could the transit method be useful for interstellar communication?”?

  • @JC-Alan
    @JC-Alan3 жыл бұрын

    I have to say that as someone who loves science and its potential future applications, finding this channel is a blessing. As a writer, I've drawn so much inspiration from these videos. You deserve way more subs Prof. Kipping.

  • @HonestJunkie
    @HonestJunkie4 жыл бұрын

    This Channel and your style are by far my favourite sites on not only youtube but the net in general. I just love the way you couple scientific fact, scientific theory, philosophical considerations, existential ponderings/consideration along with enormous curiosity & still present an openminded unbiased discussion. There are many amazing Astronomers Cosmologists, Physicists etc that I respect and enjoy reading, watching & listening to, NDT, Hawking, Kipp Thorn, Brian Cox to name a few ........... but none engage me, capture my imagination & fuel my curiosity like you and this Channel do ... *THANK YOU*

  • @brunosmith6925
    @brunosmith69254 жыл бұрын

    We are watching them in the past, and the further away we are from each other, the more distant is that past. A star 40 light-years away will have sent its light (that we see today) back in 1979. So... if we find a planet that has the potential to host (intelligent) life, and that planet is 100 light-years distant, any laser message sent to them would have a 200 year round-trip journey before we got any response. So... inviting them over for tea - one would have to advise them that (assuming they could travel to us at lightspeed) when they arrived, they would be enjoying a cuppa with our great-great-great-great-great-great-great grandchildren...

  • @bluescrubsn1913

    @bluescrubsn1913

    4 жыл бұрын

    Exactly. Any conversation using light beam or in this case laser light would take 100 years on a one way trip. Waiting for a reply would take 200 years. So, we can send out messages now and our great grand children may receive a reply. Food for thought.

  • @machasm

    @machasm

    4 жыл бұрын

    I came on to here to comment about this problem too. Interstellar communication between any worlds, even if only a single light year away, would be extremely painful due to this immense lag. Gamers complain of lag measured in milliseconds. I guess we won't be playing Fortnite with our galactic neighbours any time soon. Lol. Great channel mind you.

  • @vasiliyshumin2212

    @vasiliyshumin2212

    4 жыл бұрын

    The funny part is that any observer watches on Earth of the version of years ago depending on how far are they from the Earth. So, in case of Andromeda galaxy, its around 2.5M years ago, when the mankind was in its very-very early years)

  • @frederickjohnpicarello1909

    @frederickjohnpicarello1909

    4 жыл бұрын

    That's ok'..that is what microwaves are for! lol..So we can reheat the tea after a ..very long wait!'

  • @matonmongo

    @matonmongo

    4 жыл бұрын

    Yep, interesting vid, though likewise surprised that issue didn't come up. And it really seems to be the ultimate problem with civilizations ever contacting each other... either they eventually figure out a tech solution to exceeding the speed of light, or there simply isn't one. In which case every civilization, no matter how advanced, is perpetually isolated to their respective 'islands' by the immense distances and time required for anything to cross 'em. Or else there is a solution, but it's so beyond our science now, that a whole interstellar 'community' could be going on all around us... yet like tv signals in medieval times, we wouldn't have a clue.

  • @TheExoplanetsChannel
    @TheExoplanetsChannel4 жыл бұрын

    Congratulations in advance for reaching *100.000 subscribers!!*

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Thanks so much, genuinely never expected we’d grow to this size

  • @shadowling77777

    @shadowling77777

    4 жыл бұрын

    Cool Worlds If you want answers to some of these questions Read the Thiaoouba Prophecy bioresonant.com/dl/dl.htm?name=tp-typeset.pdf

  • @rutheeacosta
    @rutheeacosta4 жыл бұрын

    Cool Worlds I'm in serious luv with your voice lol I can literally listen to you speak 24/7 its so calming. Your channel was suggested to me and I'm glad it did. Your videos are very informative, wonderful content.

  • @foodanddrink333

    @foodanddrink333

    3 жыл бұрын

    Ruthee has a crush.

  • @clutch5sp989

    @clutch5sp989

    3 жыл бұрын

    Yes, but the twerks & jerks for every word gets annoying AF. A Beto of sorts.

  • @grtzam4184
    @grtzam41842 жыл бұрын

    Finally, an educational for Astrology which is not fragmented so you can follow through to the current theories and conclusions. What a great job you are all doing. Thank you so very much.

  • @alexv259
    @alexv2593 жыл бұрын

    I’m so glad to find your channel after a long time! 🙏 Your laser idea is FANTASTIC with GREAT potential.

  • @ronnyespencer6386
    @ronnyespencer63864 жыл бұрын

    Looks like I may have been your 100k subscriber, congrats on a beautifully done channel, your voice and knowlage has been my go to for relaxing and learning at the same time. Thank you for all your hard work

  • @Victor-tl4dk
    @Victor-tl4dk4 жыл бұрын

    There needs to be more of this!

  • @BrendAn_RSA
    @BrendAn_RSA3 жыл бұрын

    Absolutely love this channel! Information, production, delivery and overall quality is out of this world ;)

  • @kj9219
    @kj92194 жыл бұрын

    I sincerely hope we're watched, 'cause we ain't doin' too well on our own...

  • @JBOM-qp8nq

    @JBOM-qp8nq

    3 жыл бұрын

    I think we are doing alright.. all things considered. It’s only over when the last good man falls. ✌🏼

  • @evertjann6445

    @evertjann6445

    3 жыл бұрын

    Show me evidence of a species similar to us that didn't make it because "they weren't doing so well" but from another planet, not Earth. You can't, because there is no other life like us, but here on Earth. in other words there is NO benchmark to grade our performance by.

  • @JBOM-qp8nq

    @JBOM-qp8nq

    3 жыл бұрын

    @@evertjann6445 I’m not pretending to have the answers.. but something tells me speaking in such certainty is a fools errand.

  • @jaysmith9591

    @jaysmith9591

    3 жыл бұрын

    I would argue we are doing pretty good actually. We are past the nuclear scare of the cold war, we survived world war 2 and 1, we survived countles plagues over the centuries. We are at a time of peace, this is the most peaceful the planet has ever been (humans) we have the least amount of mass hungar (not perfect but better then any other time in history) we are actually doing pretty good.

  • @cliffkonkle3467

    @cliffkonkle3467

    3 жыл бұрын

    @@jaysmith9591 What are you smoking? LOL

  • @Krummelz
    @Krummelz4 жыл бұрын

    Can you imagine the ping....

  • @NightRunner417

    @NightRunner417

    3 жыл бұрын

    Pretty much only gonna work for chess. Like... generational chess. Like our chess master makes a move, then _their_ chess master makes a move, then our chess master's great-granddaughter makes a move, and so forth. Our luck, they just so happen to live for like 1,200 years on average, so to them it's like no big.

  • @miroconzelmann5027

    @miroconzelmann5027

    3 жыл бұрын

    i really dislike that he doesnt mention that even for "small" distances like lets say 100 lightyears, this implies a ping of 200years minimum. The communication can barely called communication. yea its a long shot ... a very long shot.

  • @gerardmiller7364

    @gerardmiller7364

    3 жыл бұрын

    Mostly earth is on its own. We're all selfish people, whom are giving free will , as the angels are actually physical beings from another world. They are many diverse physical aliens. This is written in Ezekiel chapter one. Ezekiel describes a round craft that flew back and forth like lightning. Not like a bat or a bird. The UFO, is big and has a cristal dome over the top. People are given the opportunity to make the best of it.

  • @alanwilkinson9487

    @alanwilkinson9487

    3 жыл бұрын

    By the time you send the message, its so far away the people you sent it too have been dead for thousands of years.the planet may not even exist anymore.it takes that long for light to reach us.the thought is just mind blowing ..... .

  • @NightRunner417

    @NightRunner417

    3 жыл бұрын

    @@alanwilkinson9487 it's the ultimate case of "long distance relationships don't work". If you never try, you'll always wonder. If you do try, you'll always wonder.

  • @Andrew__1990
    @Andrew__19903 жыл бұрын

    Just imagine knowing we are not alone and being able to communicate, it blows my mind just thinking about it.

  • @gregortidholm
    @gregortidholm4 жыл бұрын

    Amazing, thank you for sharing this fascinating insight

  • @AG-pm3tc
    @AG-pm3tc4 жыл бұрын

    I am shocked that this type of quality content exists here, but i am glad it does. Thank you and your team!

  • @cosmicmirror1320
    @cosmicmirror13204 жыл бұрын

    I could listen to you all my existence. Take a guy who teaches over one who wants to give me something. I love all your videos thank you

  • @travisgrant5608
    @travisgrant56084 жыл бұрын

    Yes. The moon watches us 24 - 7.

  • @ViCT0RiA6

    @ViCT0RiA6

    4 жыл бұрын

    Explain

  • @samoansuave_45

    @samoansuave_45

    4 жыл бұрын

    ViCT0RiA6 In the Bible it says the Angels are watching and recording our every deed whether good or bad. I believe the Moon is inhabited by Angels used as sort of an Antenna, observing and recording everything we’re doing. We are in a probationary state living on the surface of the planet because of what our first parents did, Adam and Eve.

  • @ViCT0RiA6

    @ViCT0RiA6

    4 жыл бұрын

    @@samoansuave_45 interesting information I want to know more

  • @samoansuave_45

    @samoansuave_45

    4 жыл бұрын

    ViCT0RiA6 So I believe the earth is hollow and that, that is where the Garden of Eden is (Hawaii being the GOE on the surface 😆) but it is also where the government of God resides. Within the earth is another Sun which is covered by clouds of smoke which emanate a certain warmth and electrical charge allowing all life forms there to grow larger and live longer. Some say the center of this Sun is the throne of God. The biggest mystery of Bible is where are the 10 tribes of Israel that went North and never heard from again? I believe they were lead North into the Naval of the earth and they live with other inhabitants in magnificent cities built out pure gold and all other precious metals. The creatures, animals, plants, fruits etc are a lot more purée and larger than average. The electrical charge elongates your spine allowing humans there to enjoy better breathing and much much better sleep. Back to the 10 tribes though, yeah I believe They assist Gods angels with monitoring and protecting the earth and those of us living on the surface of it in one way or another. But it does say in the last days the ice will melt and the 10 tribes of Israel will come out and save America as it hangs by a thread. But I believe every planet is hollow. It’s like looking a house from the outside in.

  • @793Force

    @793Force

    4 жыл бұрын

    @@samoansuave_45 I want the stuff you smoke mate, that stuff must be good.

  • @raazan1128
    @raazan11284 жыл бұрын

    I love this channel. Keep up the good work.

  • @shyam159
    @shyam1594 жыл бұрын

    You deserve Millions of Subscribers , for the content you share ! Highly Inspired by your Work! keep Posting Frequently !! 🤗

  • @yeliz0678
    @yeliz06784 жыл бұрын

    As an astronomer, I love these kind of contents. Thank you so much.

  • @robertschlesinger1342
    @robertschlesinger13424 жыл бұрын

    Excellent overview of the transit method of detecting exoplanets and the mathematics of mutually aligned exoplanets . Very interesting and worthwhile video. One problem with using this as a communication means is the time factor; perhaps decades for each round of dialogue. Many thanks for the links to the papers and other videos.

  • @JPColter
    @JPColter2 жыл бұрын

    I can't think of a better channel nor a better person to teach us about our cosmos .

  • @williams.vincent4235
    @williams.vincent42352 жыл бұрын

    Not only do I love your content David, I love your style too.

  • @ByWayOfDeception
    @ByWayOfDeception4 жыл бұрын

    "Master Astronomer" = coolest title ever

  • @Nososvossoyyo
    @Nososvossoyyo4 жыл бұрын

    8:36 Península de Valdés, Chubut, Patagonia Argentina 😀🇦🇷

  • @FalloutConspiracy
    @FalloutConspiracy4 жыл бұрын

    This channel is amazing. I love these videos!

  • @nathanbrauerdocdead9947
    @nathanbrauerdocdead99473 жыл бұрын

    Really love this channel. Makes me think in ways I hadn't thought of.

  • @zapfanzapfan
    @zapfanzapfan4 жыл бұрын

    8 planets in the solar system? Alan Stern is coming for you! :-) Very thought provoking indeed. Timing is important in trying to communicate. Another idea is to use for example GRBs. When you detect a GRB in one direction you send signals in the opposite direction so that when all the astronomers on a far away planet are looking at the GRB they also pick up signals from us.

  • @bojankotur4613
    @bojankotur46134 жыл бұрын

    Interesting video! How many of those 500 systems are close enough for us to be able to communicate with them without having to wait decades for a possible answer?

  • @cropunisher5879

    @cropunisher5879

    3 жыл бұрын

    Not a single one

  • @RomasNoreika
    @RomasNoreika3 жыл бұрын

    Thank you for your time and your content :)

  • @rickquest6385
    @rickquest63854 жыл бұрын

    Your presentations are well thought out and clearly spoken. Nice work.

  • @iampracticingpiano
    @iampracticingpiano4 жыл бұрын

    If we sent a "laser signal" to Wolf 47b, it would take more than 600 years for them to see it, correct? Any response they sent would take another 600 years to reach us. 1,200 years just to say hello.

  • @57ozcar

    @57ozcar

    4 жыл бұрын

    But, if they are significantly more advanced than us (a possibility) then they might pop over with a six pack of their favorite beverage.

  • @Squid969

    @Squid969

    4 жыл бұрын

    i was thinking about the same

  • @carnsoaks1

    @carnsoaks1

    4 жыл бұрын

    you just send a stream of conscious babble each year, so once they start sending back, you get an sms every year about summin they think is interesting, like Diva's

  • @pansepot1490

    @pansepot1490

    4 жыл бұрын

    iampracticingpiano, yeah but adding that simple common sense calculation to the video would have spoiled its otherworldly mystique. 😁

  • @donutwindy

    @donutwindy

    4 жыл бұрын

    Then the Wolfens would be trying to figure out what natural phenomenon produced that strange coherent light thing. (Technology they one had, but so long ago they forgot how it worked and don't recognize it). Meanwhile they've been sending us folded space messages for years, but we don't have any way to detect it.

  • @Ides385
    @Ides3854 жыл бұрын

    Interesting topic. The sad part is we could be talking about a conversation that takes a very long to communicate. If we started today it may be 100 years before it was received and another 100 before we detected a response. Maybe we get lucky and get one that is only 10 or 20 ly away and we can have a response within a lifetime. Not that it isn't worth doing. Just that it may be something that isn't realized until several generations from now.

  • @accountbounce
    @accountbounce Жыл бұрын

    This is what KZread was made of for. Great work cool world's. Thank you so much!

  • @joemak100
    @joemak1004 жыл бұрын

    Clear and articulately presented...Subscribed

  • @anarchyantz1564
    @anarchyantz15644 жыл бұрын

    Of course we are being watched. Earthlings are in the prime time comedy slot and each year the ratings get higher. Its like the Simpsons (well pre season 8) only funnier. I seriously expect the first televised alien landing to be from the Milky Way Comedy Awards for best sitcom.

  • @anarchyantz1564

    @anarchyantz1564

    4 жыл бұрын

    @@snarkylive Yeah wont be long for us now, probably within my lifetime way things are going. I lived through the height of it in the UK in the 80's, at school being shown Threads and even getting leaflets from the government to tell us about what to do when nuclear war starts (Live about 30 miles from central London so will be over quick at least) to now find we are closer to midnight on the doomsday clock now than back then, so sadly unless we drastically change our ways and try to cooperate rather than compete we will soon become just a footnote to maybe be dug up by alien archaeologists thousands of years in the future wondering what did us in and how can they avoid it.

  • @xx_amongus_xx6987

    @xx_amongus_xx6987

    4 жыл бұрын

    @@infinitemonkey917 There is climate change but humans dont really contribute much to it

  • @xx_amongus_xx6987

    @xx_amongus_xx6987

    4 жыл бұрын

    @@anarchyantz1564 There's still hope. This has been the least violent time in the entire history of humanity, and we have rockets. Once we can establish colonies on the moon and on mars, we'll have "backups" to continue humanity if anything were to happen

  • @xx_amongus_xx6987

    @xx_amongus_xx6987

    4 жыл бұрын

    @@infinitemonkey917I said there is such a thing as global warming or climate change, but it cannot be because of humans. You'd be a fool to thing a bunch of factories will cause the entire planet to heat up. The Earth is changing its poles because of the way it rotates in correlation of its eccentricity

  • @xx_amongus_xx6987

    @xx_amongus_xx6987

    4 жыл бұрын

    @@infinitemonkey917 I would like to see verifiable proof of this, because usually all I can find on the internet is some scientists that have an agenda to push. Of course we can affect the planet, but not at a scale where it really matters. Of course our emissions would go up since the start of the industrial revolution but at a level where it is fatal? No. The thing is, the Earth is never stable. Its temperature is always changing, its position is always changing, and its core is active. If the Earth moves a few centimeters a certain way it shouldn't, th entire planet can change in temperature by a few degrees. Its just how the Earth was born, it may seem like it, but planets shift over time because there is never a perfect orbit. Because of this, the planet can heat up or freeze on its own, and that is proven easily. If the planet is heating up or freezing on its own, there is literally nothing we can do about it. I dont usually trust the same scientists who claimed the world was going to end in 2012, or the scientists that say we have 12 months to live, because that is nothing more than a scam. Even if you are right though, even if we are killing the planet on such fatal levels, what will be done about it? There is nothing you can do. If anything, China is producing the most, so what are you going to do? Tell China to stop expanding?

  • @Strothy2
    @Strothy24 жыл бұрын

    I'm early here to say thank YOU! For this excellent content and quality, I foresee big things for this channel :D I found your channel last night, and today I was a bit tired at work tbh, I just couldn't stop watching :D

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Awesome thanks for your sub and time!

  • @nealsterling8151
    @nealsterling81514 жыл бұрын

    I feel privileged to live in a time where i can witness these great advances in science and discovery! Thank you, not just for this Video, but for creating such great and inspiring content for everyone to watch.

  • @xxchainsxx7390
    @xxchainsxx73902 жыл бұрын

    Love ur work bro i learn alot so i thank u, keep it up with the goof content

  • @donkique956
    @donkique9564 жыл бұрын

    They know about us. It’s just a matter of time before full disclosure.

  • @jessikapiche6097

    @jessikapiche6097

    2 жыл бұрын

    its scary there is so many stupid people who can still believe we are alone in the universe. its even scarier to believe after all ufo sightings and even US Navy release videos, that some people still believe we were never visited. I wish i could one day, shake their hands. I am not saying it would not be scary, but i do hope this is gonna happen one day...

  • @donkique956

    @donkique956

    2 жыл бұрын

    @@jessikapiche6097 me too.

  • @jessikapiche6097

    @jessikapiche6097

    2 жыл бұрын

    @@ill_be_frank sorry i don't speak scottish gaelic. ;)

  • @GeeveGeorge
    @GeeveGeorge4 жыл бұрын

    Amazing content, your research papers are really unique , thanks for sharing it with us in a really interesting way. Definitely on my top astrophysics channels amongst PBS Spacetime, SciShow space and others! :)

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Thanks! I think it’s important to spend some of our time working on more adventurous ideas and I certainly enjoy it intellectually, thanks for tuning in.

  • @GeeveGeorge

    @GeeveGeorge

    4 жыл бұрын

    ​@@CoolWorldsLab That's great! A visual explaination of research papers like your videos does leave a lasting impact in terms of how well the concept is understood and stored in our minds.

  • @ArcherAC3

    @ArcherAC3

    4 жыл бұрын

    Do you have the link for this paper in specific? The description seems to be missing the link.

  • @GeeveGeorge

    @GeeveGeorge

    4 жыл бұрын

    @@ArcherAC3 This is a paper on transit planet light curve analysis for eccentric orbits as mentioned in a point in the video. David has written other amazing papers related transit systems. Make sure to just Google 'em. academic.oup.com/mnras/article/389/3/1383/1020146 . List of few others : scholar.google.co.in/citations?user=UXY08zEAAAAJ&hl=en

  • @SynomDroni
    @SynomDroni3 жыл бұрын

    One of your best videos, in my opinion.

  • @AZ-vy4gl
    @AZ-vy4gl3 жыл бұрын

    Awesome video like always, thank you

  • @qalbi-s_Ahnfy2095
    @qalbi-s_Ahnfy20954 жыл бұрын

    Lovely channel, excellent content. Keep this up, mate.

  • @andracoz
    @andracoz4 жыл бұрын

    I can imagine that any more advanced beings out there would still consider us as fighting over caves and berry bushes unable to set aside our differences and selfish greed.

  • @nelsonsack2694

    @nelsonsack2694

    3 жыл бұрын

    We've discovered Evolution and Einstein's theories of relativity. We're hardly cavemen. Give us at least a little credit here.

  • @cliffkonkle3467

    @cliffkonkle3467

    3 жыл бұрын

    @@nelsonsack2694 OOOOHHHHH we still are cavemen

  • @gamingcreatesworlddd2425

    @gamingcreatesworlddd2425

    2 жыл бұрын

    @@cliffkonkle3467 humans are most intelligent and technologically advanced species on earth we are not caveman since 12000years ago

  • @timothyskattum950
    @timothyskattum9504 жыл бұрын

    Brilliantly expressed! Not easily can one convey the truth as they see it, and in doing so open everyone’s eyes around them.

  • @eugeneleroux1842
    @eugeneleroux18422 жыл бұрын

    Thank you for a presentation of this quality. It once again underwrites the incredible value of You Tube to inform and educate.

  • @ZX81v2
    @ZX81v24 жыл бұрын

    "No one would have believed, in the last years of the twentieth century, that human affairs were being watched from the timeless worlds of space. No one could have dreamed that we were being scrutinised as someone with a microscope studies creatures that swarm and multiply in a drop of water. Few men even considered the possibility of life on other planets. And yet, across the gulf of space, minds immeasurably superior to ours regarded this earth with envious eyes, and slowly, and surely, they drew their plans against us..."

  • @blackpearl6972

    @blackpearl6972

    4 жыл бұрын

    Nope, it's just your imagination.

  • @whitedawn2122

    @whitedawn2122

    4 жыл бұрын

    Well, we can take this planet with us... *cough cough nuclear weapons stockpiles cough*

  • @ZX81v2

    @ZX81v2

    4 жыл бұрын

    ^^ This is the opening to "War of the Worlds" btw :)

  • @chuckymcnubbin1518

    @chuckymcnubbin1518

    4 жыл бұрын

    "No one would have believed, in the last years of the 19th century...." also, it's from the Jeff Wayne album "War of the Worlds" and not from the book. The book is very different.

  • @stuartd9741

    @stuartd9741

    4 жыл бұрын

    Dud dud derrrrrrr. Dud dud derrrrrrr.

  • @marksinclair2592
    @marksinclair25924 жыл бұрын

    Incredible to imagine that an advanced civilization is watching us ..

  • @samoansuave_45

    @samoansuave_45

    4 жыл бұрын

    MJW he said War of worlds haha I think they meant fascinating as in they might be kind and peaceful is the way I took it!

  • @glenngamst61
    @glenngamst613 жыл бұрын

    Nice clear explanation of transit phenomena. Good job!

  • @P5ychoFox
    @P5ychoFox3 жыл бұрын

    This is a beautifully simple idea.

  • @user-qo6rg5ze3i
    @user-qo6rg5ze3i4 жыл бұрын

    One question: Isn't what we see actually the past? What is the level of communication then? That's an oxymoron!

  • @randomdude8877

    @randomdude8877

    4 жыл бұрын

    Even tho it would take 100s of years for a Hi! That would prove inteligent life on another planet. Having conversations within the milky way will be very difficult. Even more difficult would be traveling to their location. In some cases many thousands of years will be required to do anything, i really wonder how the human race will tackle those problems in the future if they want to expand beyond our own solar system.

  • @0909GC

    @0909GC

    4 жыл бұрын

    Usuk Therefore time travelling excist I guess, lol

  • @trahlem
    @trahlem4 жыл бұрын

    Such a cool and inspiring idea. Thank you!

  • @qtig9490
    @qtig94904 жыл бұрын

    So glad to see someone who is actually a physicist who has "run the numbers" on these various subjects, instead of the many other youtubers who have no professional training in what they are jabbering and speculating about.

  • @billszentagotay8819
    @billszentagotay88194 жыл бұрын

    Well done. Hats off!!!

  • @mitchg7809
    @mitchg78094 жыл бұрын

    Thank you KZread. My normal recommendations results in me watching some weirdo eating expired food or some such shit. But tonight it’s a really handsome Brit talking science!

  • @Beevreeter
    @Beevreeter4 жыл бұрын

    Great video but interesting as this concept is, I think it's highly dubious too - firstly a signature of life in no way guarantees intelligent, technologically advanced life capable of the kind of modulation of their transit signal that you are talking about - secondly, any such modulation, even if by some extremely unlikely chance it did happen between two worlds, would take hundreds of years between each reception and response - Given the extent of our technological advances in just the last one hundred years, do you really think we'll be fooling around with such primitive signalling many hundreds of years from now? I sincerely doubt it. It would be like us communicating with smoke signals to the guys in the next valley. We don't do that anymore ☺

  • @Taffeyboy
    @Taffeyboy4 жыл бұрын

    Excellent presentation...well done!

  • @MarioBuildreps
    @MarioBuildreps4 жыл бұрын

    You guys are brilliant.

  • @jamesfowler6306
    @jamesfowler63064 жыл бұрын

    Damn he's good! Great video, superbly presented

  • @sstrick500
    @sstrick5004 жыл бұрын

    They were watching us 400 milllion years ago. They have since destroyed themselves. We're late to the party.

  • @VarolOkan

    @VarolOkan

    3 жыл бұрын

    Or we are early, who really knows Point is, a two way communication would take hundreds if not thousands of years :(

  • @avedic
    @avedic2 жыл бұрын

    I just discovered this channel.....and I adore it already. Watched a couple videos so far. For one, you have such a great VOICE for this. And on top of that you clearly have the knowledge. But I also love how...idk, soothing it all is? It's weirdly comforting to be reminded of the immensity of reality. At least by you. SUB-SCRIBED! :)

  • @chrism3845
    @chrism38453 жыл бұрын

    So very interesting! Thank you.

  • @joydeepgogoi1227
    @joydeepgogoi12274 жыл бұрын

    Hey.... Big fan of yours..... Keep up the good work... Will always follow u to infinity and beyond

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    Thanks Joydeep!!

  • @iyaddarwish5205
    @iyaddarwish52054 жыл бұрын

    Hello from ANTARCTICA EVERYONE

  • @CoolWorldsLab

    @CoolWorldsLab

    4 жыл бұрын

    What you doin out there?!

  • @iyaddarwish5205

    @iyaddarwish5205

    4 жыл бұрын

    Am a Military scientist

  • @STriderFIN77

    @STriderFIN77

    4 жыл бұрын

    godspeed to your mission sir o7

  • @pompeymonkey3271

    @pompeymonkey3271

    4 жыл бұрын

    Hello from the UK! :)

  • @moriahgamesdev

    @moriahgamesdev

    4 жыл бұрын

    @@iyaddarwish5205 I've seen this movie. Don't thaw it out unless it's that sexy Ancient from Stargate.

  • @andrewdaniels2131
    @andrewdaniels21314 жыл бұрын

    Really appreciate your YT Videos, thank you for the information 😎👍

  • @robertcleminson3100
    @robertcleminson3100 Жыл бұрын

    I really enjoy these brilliant videos and is very well presented thank you very much

  • @storm123eagle
    @storm123eagle4 жыл бұрын

    Would love to see you on Joe Rogan's podcast. I could listen to you for hours David. Happy holidays!

  • @HFilip11
    @HFilip114 жыл бұрын

    Seems like you have a very unique way of looking at astronomy which I haven't seen before. Other science channels (not all) mostly recycle and regurgitate their material from others. Thank you, I look up to your style of doing youtube.

  • @vernonkroark

    @vernonkroark

    4 жыл бұрын

    He and his team are the ones actually doing the science. I agree this is a great way to get the information.

  • @HFilip11

    @HFilip11

    4 жыл бұрын

    @@vernonkroark I understand that and should've worded myself differently. It's about the position he is in as an active member of the science community and as a good, calm presenter.

  • @vernonkroark

    @vernonkroark

    4 жыл бұрын

    @@HFilip11 I probably should have worded my reply differently. I was just agreeing with you. This channel is great

  • @robdenton1568
    @robdenton15682 жыл бұрын

    I just watched this episode today for the first time. I think we finally have someone on the right path to find a true alien signature and led us into the future. This episode actually gave me goosebumps with his final sentence. Just amazing!!

  • @sririshi5134
    @sririshi51343 жыл бұрын

    this for some reason made me extremely happy and I looked up in the sky with new eyes in a long time. it doesn't matter if we get a cosmic hello in our life time or not what matters is that we are hopeful. thank you so much for this though provoking and inspiring video.

  • @ThexBorg
    @ThexBorg4 жыл бұрын

    Yes we are being watched. If we can see other stars, and soon to see planets... then a more advanced civilisation will be able to see more than we can.

  • @megamonalithic3353

    @megamonalithic3353

    4 жыл бұрын

    ThexBorg They’ve probably figured out how to traverse the great distances involved - maybe even undertaken life creating experiments on potential planets with favourable environments... You know, just because they can...

  • @fractalwalrus5409

    @fractalwalrus5409

    4 жыл бұрын

    Who by?

  • @xx_amongus_xx6987

    @xx_amongus_xx6987

    4 жыл бұрын

    @@megamonalithic3353 They could just be in the stone age

  • @megamonalithic3353

    @megamonalithic3353

    4 жыл бұрын

    Cameron J Indeed they could be in a Stone Age,.... Maybe we can help them figure out stuff once we’ve figured out how travel space, first sneaking past the other smarter species out there that watches us 😂😂.

  • @Powence

    @Powence

    4 жыл бұрын

    @@xx_amongus_xx6987 We might be in the stone age in comparison to them

  • @jhill8036
    @jhill80364 жыл бұрын

    Answer is yes. We are being watched, we are a intergalactic comedy show.

  • @blackholeentry3489

    @blackholeentry3489

    4 жыл бұрын

    Starring D. J. Rump

  • @ThunderStruck94660

    @ThunderStruck94660

    3 жыл бұрын

    BLACK HOLE ENTRY yeah Hillary and her magic broom would have been so much better. Merica scumbag, crawl back under your rock!

  • @ThunderStruck94660

    @ThunderStruck94660

    3 жыл бұрын

    No civilization within their planet will evolve to the top species without being vicious little things. The key is to change after you have reached the top. It is hard to go against nature. We will be fine.

  • @jhill8036

    @jhill8036

    3 жыл бұрын

    @@ThunderStruck94660 Ha ha have you watched the news?

  • @ThunderStruck94660

    @ThunderStruck94660

    3 жыл бұрын

    @@jhill8036 Not the news you watch.

  • @ferebeefamily
    @ferebeefamily3 жыл бұрын

    Very thought provoking. Thank you for the video.

  • @emanuellandin7403
    @emanuellandin74034 жыл бұрын

    Amazing content, Grettings from Patagonia Argentina...nice jacket!!!

  • @soulman71901
    @soulman719014 жыл бұрын

    "Everywhere is the center of the universe and nowhere is" -Lawrence M. Krauss - Also, I am sure we are the on alien version of NBC.

  • @kocnn
    @kocnn4 жыл бұрын

    They know we’re here, they won’t be watching for another few thousand years when we grow up. If we make it that far.

  • @adamzaidi1748

    @adamzaidi1748

    4 жыл бұрын

    We will.

  • @aristocraticnietzschean-ma1023
    @aristocraticnietzschean-ma10234 жыл бұрын

    wow what a good video, thanks for this great educational information

  • @riprapter6322
    @riprapter63223 жыл бұрын

    I really like your content and presentations.

  • @johnpeterson7281
    @johnpeterson72814 жыл бұрын

    Are we being watched? Ever hear of the BLACK KNIGHT SATTELITE?

  • @johnpeterson7281

    @johnpeterson7281

    4 жыл бұрын

    @ok all the first time it was observed was by Galileo, the guy who invented the telescope. Look it up, no shortage of info.

  • @AMoistBum

    @AMoistBum

    4 жыл бұрын

    John Peterson no

  • @djmace9029

    @djmace9029

    3 жыл бұрын

    The Black Knight Satellite could just be a piece of space debris, an asteroid in low Earth orbit. However it being an alien probe observing Earth isn’t out of the question yet just like Oumuamua which could have very well been an alien probe passing through the Solar System.

  • @ratmadness4858
    @ratmadness48584 жыл бұрын

    maybe they watch us like we watch a Marx Brothers movie

  • @jaycorby

    @jaycorby

    4 жыл бұрын

    Or the Three Stooges!

  • @frederickjohnpicarello1909

    @frederickjohnpicarello1909

    4 жыл бұрын

    Orr "The Little Rascals"...O'tayyy!👌

  • @entity5279
    @entity52792 жыл бұрын

    i dont know why but being able to understand entire videos like these feels like the biggest flex

  • @edwardb.5214
    @edwardb.52143 жыл бұрын

    Really enjoyed that! Thanks.

  • @IAmTheOnlyMrDaryl
    @IAmTheOnlyMrDaryl4 жыл бұрын

    Brilliant video and we'll done to you an the team!

  • @marckrisnanto8481
    @marckrisnanto84814 жыл бұрын

    It's not enough that we're all being watched by NSA, those darn aliens are watching us too :)

  • @thekingofthisworld2154

    @thekingofthisworld2154

    4 жыл бұрын

    Marc Krisnanto Im reading Permanent Record now. It’s a great book.

  • @shadowling77777

    @shadowling77777

    4 жыл бұрын

    If you want answers to these questions Read the Thiaoouba Prophecy bioresonant.com/dl/dl.htm?name=tp-typeset.pdf

  • @superlamb6395
    @superlamb63954 жыл бұрын

    Great content...... and your voice is so soothing. 😌🌟🌠

  • @ganjanguitar2918
    @ganjanguitar29182 жыл бұрын

    Top three people I love to hear talk about science. Carl Sagan and you are two of them

  • @LexvanDijk
    @LexvanDijk4 жыл бұрын

    We should learn from the aliens and do not make ourselves known.

  • @semajekrad6922

    @semajekrad6922

    4 жыл бұрын

    Too late for that , we have been broadcasting for well over a hundred years

  • @Arkantos117

    @Arkantos117

    4 жыл бұрын

    @Sith Jawa Well it's not really too late, it's not like we've flooded the entirety of space around us, only in certain directions. Risk can still be reduced.

  • @jasonwaters9370

    @jasonwaters9370

    4 жыл бұрын

    Yeah,like shut the fuck up! Ya know

  • @leisuretime9177
    @leisuretime91773 жыл бұрын

    This channel is a diamond in the youtube dumpster

  • @yvesgiraud7663
    @yvesgiraud76634 жыл бұрын

    Hi David. Wonderful content and ideas, once again. Another one of your videos I watched several times. Quick question: Am I wrong to assume such communication would require twice the number of light years between the two planets for a message to be answered? On an unrelated note, I was wondering if you received the book and CD I sent you a few weeks back...? Thanks again for all your awesome and mind-opening videos. Cheers!

  • @willow6217
    @willow62174 жыл бұрын

    Great video, very interesting thanks

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