The Fermi Paradox — Where Are All The Aliens? (1/2)

The Fermi Paradox — Where Are All The Aliens? (1/2)


Are we the only living things in the entire universe? The observable universe is about 90 billion light years in diameter. There are at least one hundred billion galaxies, each with one hundred to one thousand billion stars. Recently, we’ve learned that planets are very common too. And, there are probably trillions and trillions of habitable planets in the universe. Which means, there should be lots of opportunity for life to develop and exist. But where is it? Shouldn’t the universe be teaming with spaceships? Let’s take a step back. Even if there are alien civilizations in other galaxies, there’s no way we’ll ever know about them. Basically, everything outside our direct galactic neighborhood, the so called “Local Group”, is pretty much out of our reach forever, because of the expansion of the universe. Even if we had really fast spaceships, it would literally take billions of years to reach these places, traveling through the emptiest areas in the universe. So, let’s focus on the Milky Way. The Milky Way is our home galaxy. It consists of up the four hundred billion stars. That’s a lot of stars, roughly ten thousand for every grain of sand on earth. There are about twenty billion sunlike stars in the Milky Way, and estimates suggest that a fifth of them, have an earth sized planet in it’s habitable zone, the area with conditions that enable life to exist. If only zero point one percent of those planet harbor life, there would be one million planets with life in the milky way. But wait, there’s more. The Milky Way is about thirteen billion years old. In the beginning, it would not have been a good place for life, because things exploded a lot. But after one to two billion years, the first habitable planet was born. Earth is only four billions years old, so there have probably been trillions of chances for life to develop on other planets in the past. If only a single one of them had developed into a space traveling super civilization, we would have noticed by now. What would such a civilization look like? There are three categories. A type one civilization would be able to access the whole energy available on its planet. In case you are wondering, we are currently around zero point seven three on the scale, and we should reach type one sometime in the next couple hundred years. Type two would be a civilization capable of harnessing all of the energy of its home star. This would require some serious science fiction, but it is doable in principle. Concepts like the Dyson Sphere, a giant complex surrounding the sun, would be conceivable. Type three is a civilization that basically controls it’s whole galaxy and its energy An alien race this advanced would probably be godlike to us. But why should we be able to see such an alien civilization in the first place? If we were to build generation spaceships that could sustain a population for around one-thousand years, we could colonize the whole galaxy in two million years. Sounds like a long time, but remember, the milky way is huge. So, if it takes a couple of million years to colonize the entire galaxy, and there are possibly millions, if not billions of planets that sustain life in the milky way, and these other life forms have had considerably more time than we’ve had, then, where are all the aliens? This, is the Fermi Paradox, and nobody has an answer to it. But we do have some ideas. Let’s talk about filters. A filter in this context represents a barrier that is really hard for life to overcome. They come in various degrees of scary. One: There are Great Filters and we’ve passed them. Maybe it is way harder for complex life to develop then we think. The process, allowing life to begin, hasn’t yet been completely figured out, and the conditions required may be really complicated. Maybe in the past, the Universe was way more hostile, and only recently things have cooled down to make complex life possible. This would also mean that we may be unique, or at least one of the first, if not the first civilization in the entire Universe. Two: There are Great Filters and they are ahead of us. This one, would be really really bad. Maybe life on our level exists everywhere in the Universe but it gets destroyed when it reaches a certain point, a point that lies ahead of us. For example, awesome future technology exists, but when activated, it destroys the planet. The last words of every advanced civilization would be: “This new device will solve all of our problems, once I push this button!” If this is true, then we are closer to the end then the beginning of human existence. Or, maybe there is an ancient type three civilization, that monitors the universe, and once a civilization is advanced enough, it gets eliminated, in an instant. Maybe there is something out there, that it would be better not to discover. There is no way for us to know. One final thought: maybe we are alone. Right now, we have no evidence that there’s any life besides us. Nothing. The Universe appears to be empty and dead. No ones sending us messages, no one answering our calls. We may be completely alone, trapped on a tiny moist mud ball in an eternal Universe. Does that thought scare you? If it does, you are having the correct emotional reaction. If we let life on this planet die, perhaps there would be no life left in the Universe. Life would be gone, maybe forever. If this is the case, we just have to venture to the stars and become the first Type Three civilization, To keep the delicate flame of life existing, and to spread it until the universe breathes its final breath, and vanishes into oblivion. The universe is too beautiful not to be experienced by someone. This video was made possible by your support. It takes at least 200 hours to make one of our videos, and thanks to your contributions on Patreon, we are slowly able to do more and more of them. If you want to help us out, and get your own personal bird for example, check out the Patreon page.

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100 Comments

  1. Type 4 civilization is a gaming community that isn’t toxic

    Minecraft = 3.6

    Fortnite =0.00000000000001

    CSGO = -1000

  2. I kinda feel the void ever expanding because if dark mater is the filter. And every pocket probably has a advanced civilization somewhere in it

  3. Bruuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuu kaiju exe has stopped working

  4. Everytime i start questioning lifes questions like how did we get here? Is there other life? Where will i go when i die? How come were so young compared to everything else in the galaxy? Whats the meaning of life? If we were to disappear why were we here to begin with? Why is our life span so short?.. Everytime i ask questions like this i get a shiver and an empty feeling, and then i start to cry. Ugh

  5. I just wonder, is it possible that there could actually be a supreme creator???
    There are many scientists that are firm believers in intelligent design!

  6. That barrier may be our own minds. With more neurons in the brain than there is stats in the entire Galaxy, makes you wonder…where can we go if all we do is " wash and repeat" history century after century. We need to start a revolution of BEING instead of HAVING, and treat EVERY living thing as if our existence depends on them….because IT DOES! Until that happens…were up against a paradox.

  7. Maybe there is someone of type 10 civilization who has made us as a scientific experiment in another universe and had let us grow to become a level 3 civilization as his school project

  8. We will be a type 1 civilisation in just couple of hundred years..

    No one watching this video in this 21st century can witness that😏

  9. We will be a type 1 civilisation in just couple of hundred years..

    No one watching this video in this 21st century can witness that😏

  10. I think that we are alone in universe is more unlikely to occur because we have some evidences like the crop circle, arecibo message, wow signal and others. But the reason we don't see aliens may be that we are too primitive and small technologically to meet them…….. For example, if an ant called you to its home, then you are more likely to not go since you have your own business to deal with or maybe you'll go depending on your mood and situation, but rarely. The same case applies to aliens and humans. Because they are so advanced, so they don't consider an earth visit more dominating than there work as we are too primitive and also it would be a wastage of time for them. Secondly, we don't seem to harm any extraterrestrial intelligent life, so they won't interfere with us cause if you interfere with another person then obviously they'll do the same. So maybe we don't see aliens for this reason.

  11. But it might not be life in the milkey way but if if is (Much much further away) we wouldent know because the time we see in other universes are millions of years earlier than what it actually is because of the time the light takes to travel to our telescopes

  12. Were literally on Alpha Centuri A just come ge the communications ar mes ng up 101010101010101011010100010101010101010101010101010101010 message failed to travel please try again in 3:06 Years

  13. Video games will be like
    Earth:hp 99999999999 strenght 9999999999
    Fillter1:out of food 100
    Fillter2:strong earthquick99
    Earth new thing discover:+8888
    Filler3:volcano u know wat i mean?? 82739
    Earth:hp 46738 strenght 291839
    100000818828182918w9 years later
    Filler9192918:9182981 alien attack 82918828818 earth overheated
    Earth:hp 9182972817182 strenght 918w91829 sheild: 918982 (produce by tecnology)

  14. Une alternative au filtre de type 3 : les civilisations terrestres doivent passer un examen civilisationnel avant d'être admises à rencontrer les autres civilisations galactiques. Je pense aux aptitudes technologiques, mais aussi et surtout aux capacités à l'empathie et à la compréhension et acceptation de l'autre, sans lesquelles aucune rencontre avec d'autres intelligences extraterrestres ne saurait être mutuellement profitable

  15. but… If there is no life left in the universe, none at all, then why would it matter? all the meaning, all the fear, all the values we hold, they're an illusion. On the grand scale of existence we mean nothing. Nothing means anything.

  16. What if we are the last intelligent spices In the universe and the other life formed dide before we human was became who knows

  17. Were probably just the bad part of town where your parents hate to have football games at because they’re scared they’ll get robbed

  18. I think that Earth is either A. too remote for spacefaring aliens to reach us or want to, or B. too primitive to warrant anything but observation by alien scientists like how Jane Goodall studied chimps. Aliens studying Earth would be able to easily avoid detection by humans through the use of advanced technology.

  19. Also, there's a great Outer Limits episode (Season 3 episode 8 Heart's Desire) that shows an alien visiting Earth that's relevant to the Fermi Paradox.

  20. If you think about it, God in religion can be translated into a type 3 civilization that destroys a race if it gets too developed past a certain point. Does Noah's arc ring a bell? humanity was becoming too advanced so it was reset back to the stone age.

  21. @2:10 you state if only 1 planet had developed into an advanced civilization in our galaxy we would have noticed by now. The hubris…we havnt even managed to track all the objects in our own solar system yet. We cant even account for all the potential extinction threats posed by space rocks and you put forward an idea that we would be able to notice an advanced civilization. 😂🤣🤦‍♂️

  22. Question…..who counted all the stars galaxies etc? Your talking numbers that would take lifetimes to count track and document. How was this even attempted? And wheres the proof? Did they guess ?

  23. the flaw in your arguement is assuming time will always be at a certain pace for us. time in our mind is measured by how fast we can process the matter around us, imagine if we get our diet to a state where we can double or triple our prcoessing speed while simultaneously extend our biological life clock.. i think if we end up bending those laws then leaving the Local group will be managable..?? a billion years could turn to a thousand if stretched and condensed

  24. If 400 000 000 000 (400 billion) stars is roughly 10 000 stars for each grain of sand on earth, it would mean, that there are only 40 000 000 (40million) grains of sand on earth! I think 40million grains of sand would fit into most back yard sand boxes

  25. We are being watched by a type 3-9 civilization and no they won't "destroy" us for no reason, unless we're toxic nuts that want to terrorize other worlds

    Warp speed is possible and yes we could go anywhere and do virtually anything you could think of

  26. Someone said this is depressing..lol Good! Nothing depressing about it at all, all things move on and parish, I'm not sure why people are so afraid that we are alone in the universe, unless of course it displays not only our horrid ego but fragile insecurity as well. It doesn't bother me one bit, face it, we're alone in a beautiful doomed hell, a forever purgatory of nothingness, the absence of everything is the human fate, nothing more, make peace with it, we're nothing but dust in the wind as the old Kansas song goes. 🙂

  27. There are 897 trecentillion planets if you count all of them from every universe, in this Universe there are around 15 tredecillion planets and also, not trillions of trillions sand grains we have on this planet but exactly 44 octovigintillion sand grains😊

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