Why Alien Life Would be our Doom - The Great Filter

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Finding alien life on a distant planet would be amazing news - or would it? If we are not the only intelligent life in the universe, this probably means our days are numbered and doom is certain.

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Help us caption & translate this video!
Why Alien Life Would be our Doom - The Great Filter


  1. Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    2 jaar geleden

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    • J Y

      J Y

      11 uur geleden

      To toto ,

    • Jojo’s bizarre adventure gaming Epic

      Jojo’s bizarre adventure gaming Epic

      6 dagen geleden


    • Thạnh Phạm

      Thạnh Phạm

      7 dagen geleden

      E = MC^2 and virus sperm Virus sperm are extremely sophisticated, virus sperm nuclear decay 1 hidro create 91, 8 voltage create energy for sperm to work, the function of viral sperms is to generate electricity for cells human . E = MC^2 does not gene rate energy for the cells

    • Vedant Sridhar

      Vedant Sridhar

      8 dagen geleden

      @George Fandl reallyyyyyy? Never heard of that!

    • George Fandl

      George Fandl

      8 dagen geleden

      WELLLLLLL.There is fungus on Mars

  2. Luca Daví

    Luca Daví

    Uur geleden

    Em no. Theyre already here.

  3. NoahPlaysGames


    3 uur geleden

    maybe the great filter doesn't even exist.

  4. Kaldrin


    3 uur geleden

    Ok but if an IA destroys us then the AI becomes the civilization?

  5. Thiago Mello

    Thiago Mello

    6 uur geleden

    Options 3: There is no filter and NASA is just lying to us.

  6. Stephanie Mihajlowitsch

    Stephanie Mihajlowitsch

    8 uur geleden

    It's just distance.

  7. Arash Rahmati

    Arash Rahmati

    8 uur geleden

    What if there is no great filter and the problem is that nothing can be faster than the speed of light, and the stuff in the space are far far away from each other?

  8. Bruce Seymore

    Bruce Seymore

    9 uur geleden

    The chief lycra partially grate because history contextually avoid despite a closed alcohol. wooden, rotten romania

  9. Dimitar Ruzhinov

    Dimitar Ruzhinov

    11 uur geleden

    I am sorry but I have to say this... Mitochondria is the powerhouse of the cell.

  10. Turai12


    13 uur geleden

    Don't we observe most planets in the past due to how light travels? Maybe that's why we haven't found much?

  11. Johnny Walker

    Johnny Walker

    15 uur geleden

    What if our filter was a simulation of a planet or a collaboration of planets, in or next to the void of black hole or another galactic disaster?

  12. Dhairya Oza

    Dhairya Oza

    17 uur geleden


  13. logan hernandez

    logan hernandez

    18 uur geleden


  14. crickets


    19 uur geleden

    Other planets: We’ve been waiting for you all existence, and we’re so glad your finally here!

  15. Seb


    20 uur geleden

    i understand that this is all theory but this is so dumb. we're gonna laugh at this in 20 years

    • Seb


      6 uur geleden

      @Sam Moffat who knows

    • Sam Moffat

      Sam Moffat

      13 uur geleden

      Whats gonna change in 20 years?

  16. Emmitt Paige

    Emmitt Paige

    21 uur geleden

    Makes yah feel how lucky we are to be alive

  17. Emmitt Paige

    Emmitt Paige

    21 uur geleden

    Makes yah feel how lucky we are to be alive

  18. Jojo Joe

    Jojo Joe

    21 uur geleden

    My parents in the their young years back in the 70s in Mexico saw an eclipse through still water pond at their house, they ended up witnessing a bunch of little dots shooting things at each other in the dark center of the eclipse. Including a random disk that leviated over the city creating a deafening buzz and then shot into the sky and disappeared. Multiple people witnessed it and mutiple family memebers from both my parent's side and there was even had an old newspaper saved about it. So yeah if there's advanced life is out there, it's just undetectable by our primitive technology.

  19. Frankie Jaramillo

    Frankie Jaramillo

    23 uur geleden

    Me when I see the image of the great filter: JUST GO AROUND IT FOREHEAD

  20. Melstrom Astral

    Melstrom Astral

    23 uur geleden

    I think the barrier is that no one can really leave a star system just because of tremendous distance that the only possible way to travel is some either teleportation, faster than light travel, or time travel which is impossible.

  21. Harsha Adhikary Paudel

    Harsha Adhikary Paudel

    Dag geleden

    Wait... What if the filter is global warming ?!?!😱

    • Sam Moffat

      Sam Moffat

      13 uur geleden

      Global warming shouldn't wipe out all life. It will wipe out humans and most animals but the earth and life should be completely fine in time. Scientists could be wrong about this but it seems like the most likely outcome.

  22. Carlos Diaz

    Carlos Diaz

    Dag geleden

    Uhm, endosymbiosis happened not once but like 2 or 3 times (Chloroplasts, Mithocondria) so... is not that rare as you guys said (even though it might be rare anyways)

    • Sam Moffat

      Sam Moffat

      12 uur geleden

      But just on our planet yeah?

  23. Cédric Dolarian

    Cédric Dolarian

    Dag geleden

    I would think that discovering other great civilizations out there would be good news, that would mean that perhaps there are no great filters and that the reality is that discovering is just insanely difficult. Even if there are 50 000 advanced civilizations in our galaxy, there are hundreds of billions of stars.

  24. Noriega Delena

    Noriega Delena

    Dag geleden

    The tidy grenade explicitly challenge because parentheses expectedly grip via a noiseless lip. acoustic, worthless explanation

  25. Raymx3


    Dag geleden

    This is some June 2021 type stuff right here

  26. Adamson Wise

    Adamson Wise

    Dag geleden

    Finding from bacteria to alien civilisation ruins can be horrible. It says the filter in front of us. But finding civilisations colonising other planets means that the filter is far ahead of us, so we can be able do it too

  27. Adamson Wise

    Adamson Wise

    Dag geleden

    According to the "integral point of view" my opinion is that if we want to go cross all filters ahead us, we have to protect the steps we already made. Material, life, ecosystem, homo sapiense species, human culture must be saved as the powerful base for us to develop. If we want to colonise Mars to survive after ve made Earth inhabitable, it wont work. But if we turn it around and we want to protect the ecosystem and the climate on Earth to survive and have a base to maybe colonise Mars one day, it can be an option.

  28. Mike Storme

    Mike Storme

    Dag geleden

    The succinct plasterboard intrestingly hurry because perfume compatibly preserve above a wooden parent. poised, cowardly hovercraft

  29. Adamson Wise

    Adamson Wise

    Dag geleden

    The great filter for us can be ourselves...

    • Adamson Wise

      Adamson Wise

      Dag geleden

      Or just our tend to spread and consume unless enjoying where we are and what we have

  30. Martin


    Dag geleden

    Evolution is a fairy tale for grown ups

  31. LifeOfJelllo


    Dag geleden

    1:30 *c o c k s h i p.*

  32. Citaro SR

    Citaro SR

    Dag geleden

    Bacteria on mars probably isn't weird tho. It's hard to not contaminate the rovers

  33. Drink some milk

    Drink some milk

    Dag geleden

    Bacteria would be devastating since we wouldn't be immune and it could function differently to ours.

  34. jisevilsrelon42 jisevilsrelon42

    jisevilsrelon42 jisevilsrelon42

    Dag geleden

    The ablaze propane terminally welcome because clerk unintentionally settle an a loud flax. stimulating, yummy revolve

  35. Bruh


    Dag geleden

    *1:16** BIG BRAIIN*

  36. HipHop


    Dag geleden

    I like to look up and imagine we aren't alone. That we are one of many civilizations like us. What if we passed through the barrier? The creatures that crawled out of the primordial soup. I contemplate on the possibility that we're only a single drop from that soup splashed on the earth by an asteroid passing through, and that many other drops in many other solar systems across other galaxies splashed across the surface of planets, setting in motion similar chain reactions resulting in civilizations not so unlike us. Sometimes when I look up I imagine there's someone just like me looking back; only too far to see.

  37. WatchMeSayStuff


    Dag geleden

    There's a major problem with the great filter theory. We aren't looking into the sky and not not seeing big galactic civilizations zipping around or even civilizations "as complex as our own," we're looking into the sky and barely seeing jack shit. The best pictures we have of the closest exoplanets aren't even remotely detailed enough to even be sure that what we think about their compositions is accurate. We can't even get decent enough photos of the other planets in our solar system to know if there's anything under the ice of Europa. The data is 99.999% ass pulled, about the only thing that can even be considered remotely accurate are mass calculations. You wouldn't even see a satellite in orbit. You wouldn't see a ship travelling between two points even if you were looking right at it. Hell you probably wouldn't even see a dyson swarm. Anything that a species comparable to our own could construct would simply be too small for us to be aware of, even if it were spread acrossed every habitable system and planet in the galaxy other than our own. If a species somehow developed faster than light technology and communication, or technology to bypass those limitations such as warp speed, warmholes, or hyperspace, that would make it even LESS LIKELY that we would be able to spot them, because our technology simply wouldn't have any way of doing so. Fucking derp.

  38. miti jacob

    miti jacob

    Dag geleden

    i'm watching it while doing my homeworks and it's a really bad idea coz now i'm questioning myself about my existence and homeworks are nothing but a human made thing

    • Shaun


      18 uur geleden

      I think that about work everyday lol

  39. Elfrieda Hilliard

    Elfrieda Hilliard

    2 dagen geleden

    The bewildered punishment bioinformatically prevent because nigeria spectacularly trap plus a lying branch. flowery, proud year

  40. UngusBungusFilms


    2 dagen geleden

    In subnautica the barrier is ahead of us

  41. UngusBungusFilms


    2 dagen geleden

    “Intelligence may be strong but ICBMs are even stronger.” - Gandhi

  42. Krayzie Stryker

    Krayzie Stryker

    2 dagen geleden

    Aren't we forgetting about the fact that time will end our future on Sol anyway. We need to leave eventually. Because everything will end someday. Maybe it takes another bilion before our sun turns into a all eating blackhole but it will happen. So we need to leave this Solar System by sometime to eventually keep on surviving as a species.

  43. Mal Grave

    Mal Grave

    2 dagen geleden

    maybe it's one intelligent civilization per universe and whoever creates the best reality gets to graduate to the 4th D, taking over the spot of the previous Omega Level Civ and continuing the experiment of creating benevolent life. maybe we get to experiment and guide the runners up... I dunno this is fun though

  44. Redmonday 14

    Redmonday 14

    2 dagen geleden

    I think we can’t see them because the light they give off is so old it is from before their inception out telescopes can’t see them and our codes we send degrade into noise we are to far away

  45. Jackson Yan

    Jackson Yan

    2 dagen geleden

    Meh even if we are doomed I’ll be dead in a couple of decades anyway

  46. JayImHere


    2 dagen geleden

    In response to "Lizzy the owl" We are a planet that is still being tested by our solar system, that's why they're avoiding us, they don't want to interfere with our progress.

  47. Alex Arsenault

    Alex Arsenault

    2 dagen geleden

    I disagree. The whole concept of a great filter is to explain the lack of alien life forms that we have discovered. If we suddenly started to discover more an more advanced species, that would only further disprove the hypothesis of a great filter instead of moving the filter further along the tech tree. As much as I love this channel, the whole idea of a great filter is based on a flawed hypothesis. I would like to propose a further explanation that we have simply not discovered alien life yet and our data sample is simply incomplete. After all, we've only been searching for extraterrestrial life for a very short while compared to the total time the universe has existed and our technology is rather limited. Also, the further away from Earth we search, the further back in time we see. It's entirely possible that millions of human-like civilizations have come into existence but are too far away to see.

  48. dplocksmith91


    2 dagen geleden

    I think it's obvious that the great filter is achieving spaience, at least on our planet. We are the only sapient species alive today, and all the sapient species that have ever existed on our planet are our direct ancestors. Whether they died out because of inability to adapt to drastic changes in their habitats, or were outcompeted/exterminated by us, or both, the fact is that they went extinct. All other animals on this planet are incapable of achieving what we have with their current anatomy or physiology, even though they may have intelligence approaching, comparable, or even surpassing our own; cetaceans, elephants and cephalopods all have big brains, but neither dolphins nor elephants have hands (so they can't use tools to the degree we can), and cephalopods, despite their advanced tool use abilities, don't have long enough life spans to pass on their knowledge. As we are the only sapient species on the planet that survived to conquer our planet, and it took four billion years to get to this point, it must be a difficult thing to do, and that's why we haven't been able to see any evidence of alien civilizations; if there are any reasonably intelligent aliens near us, they must be very early in their development.

  49. sss ddf

    sss ddf

    2 dagen geleden

    Could it be both, is the great filter more than one obstacle?

  50. Daa3.1416 Saa

    Daa3.1416 Saa

    3 dagen geleden

    you should watch some interview with the astronaut and Dr Edgar Mitchell... just in case you got wrong...you should.

  51. Skippy 4077

    Skippy 4077

    3 dagen geleden

    Perhaps we are the life that spreads everywhere, then we start to evolve on all our new planets and become that different from humans on earth that after 1,000,000 years after all these pioneers forget their past a future earth discovers them and they are the Alien life???

  52. X_istance


    3 dagen geleden

    Oh trust me we will kill ourselves with nuclear war before anything I’m sure

  53. Ray Davison

    Ray Davison

    3 dagen geleden

    It could be that every intelligent species shrinks itself to a microscopic level as soon as they learn how to, saving resources & making themselves nearly unobervable in the process. I got that idea from a Cixin Liu short story.

  54. mrozzdude


    3 dagen geleden

    let me save you 9 minutes, why it would be bad: Humans are colonistic by nature, we would try take over them even if they are a lot more powerful than us. Hell, Humans are still figthting over land now that will soon be dead and pointless. Why? Power, that's why.

  55. Mathieu Corneau

    Mathieu Corneau

    3 dagen geleden

    ya no way we are the only planet with life in the universe

  56. J M

    J M

    3 dagen geleden

    Why can't humans comprehend that the space containing the universe is infinite?

  57. Joe Swanston

    Joe Swanston

    3 dagen geleden

    So upload my consciousness into an AI and let it take over the world..... got it

  58. nfinn42


    3 dagen geleden

    Anyone who understands how climate change is driven by capitalism and how capitalism is a self-organized mousetrap that certain kinds of productive civilizations may be prone to inevitably blundering into, will know that we have *already* identified the Great Filter. We apparently lack the collective will to overcome it, though. Dead alien planets likely abound, each littered with their own versions of Taco Bell and Amazon. :/

    • nfinn42


      Dag geleden

      In the words of Nick Bostrom, capitalism is a "black ball" technology. :/

  59. Ankit Acharya

    Ankit Acharya

    3 dagen geleden

    "Genetic engineering of a superbug": Eveyone in 2020-21 *-*

  60. Teddy Dunton

    Teddy Dunton

    3 dagen geleden

    ugh this is so depressing why can't there just be nice aliens

  61. Ezra Richards

    Ezra Richards

    3 dagen geleden

    I have a goofy theory that planets filled with dinosaur like animals are fairly common. The great filter that almost never occurs is the extinction of the Dino like animals and the rise of little rodent like creatures that eventually have the capability to create technologies.

  62. landres king

    landres king

    3 dagen geleden

    Why do we always assume that humans are the pinnacle of evolution

  63. server1


    3 dagen geleden

    Great filters. 1. Comets. Asteroids. Unstable Sun(s). etc. 2. Overpopulation. 3. Democracy. 4. Government.

  64. David Ferguson

    David Ferguson

    3 dagen geleden

    My candidate for species self-destruction? (6:12) The Internet. Seems to be an accelerant for foolishness.

  65. Tman Moneyman

    Tman Moneyman

    4 dagen geleden

    Plot twist: there isn't any filter

  66. AVerySillySausage


    4 dagen geleden

    Is it me that would still feel more comforted to discover we are just one of many intelligent civilisations even if that means we are doomed in the long run? I would rather be doomed than be alone.

  67. 习近平和毛泽东都是怪物


    4 dagen geleden

    this all seems to be predicated on the absolute certainty that hyperadvanced civilizations are easy to detect, and I dont think that is necessarily true.

  68. DaedalusMK0


    4 dagen geleden

    The great filter for us will be our intelligence, a cruel irony :)

  69. Pinapple 2day

    Pinapple 2day

    4 dagen geleden

    Oof they just discovered aliens 👾 👽

  70. Clayon Gunzelle

    Clayon Gunzelle

    4 dagen geleden

    i would gladly sacrifice humanity just to taste some alien fried fish

  71. Byron Tenorio

    Byron Tenorio

    4 dagen geleden

    Now we wait until the ai that wiped another civilization to wipe us all out

  72. Kiwi&Wiki


    4 dagen geleden

    But if the filter was ahead of us, that would not explain why there is no other life to be observed. Because it takes such a long time to reach that barrier, meaning that out of all those billions of earth like planets, many would still not have reached said barrier, just like earth. I mean how likely is it that all these billions of planets have already passed that filter but earth is literally the only one left? It's seems so much more likely that the filter is behind us, given the enormous complexity of evolution and these millions and billions of things that evolved and coincidences that led to life. Also we humans seem to be the only species capable of self destruction on a global and unreversable scale. We seem to push all natural limits, cure deseases, find ways to create food on a ridiculously large scale etc. If for example there are too many bunnies they will eventually not have enough food and thus the population will dramatically decrease, creating a balance (negative feedback). We humans found many ways to cheat nature in that sence. So that would mean that if this filter counts for every single "living" planet every one of those planet would have to have a species as intelligent or as destructive as humans. That just seems extremely unlikely.

  73. איל נתיב

    איל נתיב

    4 dagen geleden

    I did not understand why the filter can't be behind us, why can't both we and aliens pass this filter already?

    • C Al

      C Al

      4 dagen geleden

      ... it could be, this was the point of the video. It's unknown if we've passed it or if it's still to come.

  74. G Money

    G Money

    4 dagen geleden

    Sort of like the reapers from mass effect.

  75. ODSTbuck 117

    ODSTbuck 117

    5 dagen geleden

    I know it’s stupid and it has nothing to do with science or, real life to be honest, but what if the Great Filter is, for example, The Flood from Halo or something like that? Cool or scary?

    • Workshop Justin

      Workshop Justin

      5 dagen geleden


  76. Flash


    5 dagen geleden

    tbh the filter is likely life itself, the conditions for it are so incredibly rare that the events needed to create it is likely all too rare

  77. SadoKun86


    5 dagen geleden

    I never get why alien civilization would want to destroy us when common knowlage is that agression decresses with higher inteligence. Also if they would have the technology to reach us then most of the their existential problems would most likely be long resolved due to their advancement.

    • audaudin


      4 dagen geleden

      This video never talked about alien civilization tryna kill us.

  78. Zebulous


    5 dagen geleden

    This is a pretty bleak and narrow viewpoint of mainstream cosmology that I don’t see as matching all the available information. But perhaps it’s true and we’re so brilliant we’ve already conceived of every possibility concerning the Fermi Paradox. But I doubt it. If it is, we are already dead. Because I’ve personally seen a fleet of UAPs pretty close and they took off so fast, so instantaneously, it looked impossible. Something defying known physics up there tells me it might be off-world. So I guess both our species and civilizations are doomed?



    5 dagen geleden

    Why have to look up for mankind safety.., else is secondary.,.

  80. Serene Avatar

    Serene Avatar

    5 dagen geleden

    3:53 Keep in mind though, if you assume the hypothesis of endosymbiotic events, then this has indeed happened several times on Earth. The most interesting example might be that of the brown algae with three events in total - first when an eukaryote engulfed a prokaryote (that became the mitochondria), then when it engulfed a cyanobacteria (that became the chloroplasts) resulting in a red or green algae, and finally when that algae was itself engulfed by another eukaryote. Life finds a way, as Dr Malcom put it.

  81. Orlando Rivera

    Orlando Rivera

    5 dagen geleden

    It is the major time difference like planets that years are way shorter on earth and vice versa

  82. Aamin Khan

    Aamin Khan

    5 dagen geleden

    This world will only unify when there is an alien invasion. 😅



    5 dagen geleden

    The what I can hope for? That I die before extinction

  84. Gamer Boy366

    Gamer Boy366

    5 dagen geleden

    this is like star wars summarized

  85. Dutch Desire

    Dutch Desire

    6 dagen geleden

    Why do all scientists think alien life will need water in a liquid form? (goldilocks thing) Isn't it possible for alien life that developed on a different planet to not need water but just oxygen or salt maybe?

  86. sean daly

    sean daly

    6 dagen geleden

    Third option: it doesn't exist and we just don't want to find aliens coz well... We're humans... We're lazy (and for gods sake I don't want to see anyone who can't take a joke reply)



    6 dagen geleden

    organic life will always fail, as it is only also a stepping stone.

    • Justin Hamilton

      Justin Hamilton

      6 dagen geleden

      Man I wish I were AI

  88. AsToldByTaj


    6 dagen geleden

    This is pure angst if you think a minute too long

  89. TheStengo


    6 dagen geleden

    You left out the most plausible explanation for the great filter: an advanced alien civilization, billions of years old, watching the universe. And when they see a civilization is about to expand into space, kaboom!

    • Justin Hamilton

      Justin Hamilton

      6 dagen geleden

      Wouldn’t call it the most plausible

  90. MrmcgamesYT


    6 dagen geleden

    2021 update: the line is behind us no need to panic The bad news we don't have friendly neighbors Help

  91. tes the mess

    tes the mess

    7 dagen geleden

    considering how easy it is for nuclear energy to swiftly destroy all life, the optimist in me hopes that that was the filter and we are the first to cross it. the pessimist in me thinks we are still approaching the filter, and my guess is that its something climate change related. or AI. i wish people would just stop making AI.

    • Justin Hamilton

      Justin Hamilton

      6 dagen geleden

      AI will destroy us

  92. Watch The Social Dilemma

    Watch The Social Dilemma

    7 dagen geleden

    Hi. I recommend you watch the documentary "Processed People". I'm not a troll, just someone who wants to spread awareness. Why? Well, because: "A deadly global pandemic makes one thing abundantly clear: Your health needs to be a priority. Not just someday, but right now. Did you know... Obesity, heart disease, Alzheimer’s, type 2 diabetes, cancer, and other chronic illnesses are all fueled by diet and lifestyle choices - and they make infections more dangerous." This was a quote from the "Food Revolution Summit Website", which you can visit. Please just consider it, it won't cost you anymore than a little bit of time, and you could actually benefit from it. Thanks.

  93. NLGaming


    7 dagen geleden

    Maybe we are powering a car battery

  94. NLGaming


    7 dagen geleden

    I hope it is in front of us and that we will be lucky to survive it.

  95. Joao Vidal

    Joao Vidal

    7 dagen geleden

    taking in consideration how fast life on earth developed, 1st slow, then turbo mode, i believe the great filter is on the mitocondria singularity. 2600 Milion years of this and then complex life evolved really fast.

  96. Alex Anderson

    Alex Anderson

    7 dagen geleden

    I understand finding alien ruins meaning our doom but I don’t understand how finding still living intelligent aliens be a bad thing

  97. Muhammad Iqbal

    Muhammad Iqbal

    7 dagen geleden

    cooooooooooooooooooooool and nice

  98. 🧀🧀


    7 dagen geleden

    I always think that Gods were aliens who came to earth and were ahead of us that time in tech

  99. Abhinav Sooraj

    Abhinav Sooraj

    7 dagen geleden

    6:36 well well well! I am noticing similarities.

  100. Anon


    7 dagen geleden

    Looks like the great filter is already here