Alien Xenomorph Biology Explained! (Because Science w/ Kyle Hill)

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  • Published on May 18, 2017
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    The Alien franchise has shown us many forms of aliens from facehuggers to xenomorphs, but how does it all work? Kyle bursts through with an explanation in this week's Because Science!
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Comments • 3 224

  • Galaxy News
    Galaxy News 7 hours ago

    Kyle, I was wondering what movie YOU think is worse Alien3 or Alien: Resurrection

  • trenton taylor
    trenton taylor 6 days ago

    8:16 theres no facehugger there XD

  • nast (anastasija)
    nast (anastasija) 6 days ago

    I never get dreams and a bulky nightmare but mostly not as bad as kids be XD BTW IM 13 AND I'm not scared XD

  • I need a good Youtube name

    A human doesn't transform into a xeno, they transform into a drone which turns into a warrior to praetorian and then queen. if there already was a queen, the praetorian might transform into a carrier or ravager. The "dog" alien or runner transforms into a Chrysalis, smasher, or crusher, I don't remember exactly this strain's life cycle.

  • G Grime
    G Grime 10 days ago

    Xenomorphs don't mate there like ants in a way but some xenos eventually molt into queen xenos and the queen puts itself on a wall grows a egg sack and starts laying tons and tons of eggs and they hatch face huggers that mostly leave the nest to find a host by there self unless there are hosts already trapped in hive walls with only there face sticking out making them helpless

  • archon099
    archon099 10 days ago

    Wasn't the alien from Alien 3 formed from a face-hugger using a dog as the host? That's why it was so different from the humanoid ones. But yes, that movie was indeed bad, lol.

  • Aer
    Aer 10 days ago

    Almost like Prometheus shouldn't have ever existed

  • Ollis Solrain
    Ollis Solrain 13 days ago

    Waylin wanted strong Replicants lol

  • Jeff Pattison
    Jeff Pattison 13 days ago

    Good explaination. It shows how the original concept really went off the rails. I think Bannon and Shusett imagined it as a natural species, but it is too specifically adapted to prey on humans and attack the structures of modern civilization to be that. Scott thought it was a bioweapon, but horizontal gene transfer messes that up. It’s great for artistic expression, but a weapon that adapts its way around designed safeties or loses its potency by picking up weak genes is not particularly useful for ensuring the clearing of planets of sentient life. That black goo, aka monster sauce, is not a much better concept, because it too is an uncontrollable doomsday weapon.
    I tend to look at the engineers as gardners, manipulating the biospheres of habitable planets to produce the resources that they need. To them, we are just weeds that need to be pulled when we threaten their vegitables.

  • pink smog
    pink smog 13 days ago

    THANK YOU! I got so mad when they took their helmets off in Prometheus!

  • ziljin
    ziljin 18 days ago +1

    I love how he says ZE GOO!

  • Gabriel Nicolas
    Gabriel Nicolas 20 days ago

    8:15 its basically evolution

  • ci rob
    ci rob 20 days ago

    Nice theory of evolution

  • SupremeDuckling_YT on roblox

    What does zuh goo do to a xeno morph

  • Ronnie Dorsey
    Ronnie Dorsey 23 days ago

    Watching this on TV lol, didn't know you would be on cable

  • TheManCone Yo
    TheManCone Yo Month ago

    Great video one very well could theorise just on the movies alone that an alien could simply sting someone turning them into an egg sac that would give birth to several drones and eventually a queen to help establish a hive and the warrior class smooth domed ones would be birth from face huggers to help protect the queen or establish a new hive and in rare cases a drone would turn into a pretorian gaining the stinging reproduction ability you could even squeeze the raven into the cycle saying it is the result of one queen being present with one drone it would not evole into a pretorian but need to establish a paremiter and be able to ward off possible threats a single drone couldn't handle outside of a swarm.

  • Bryan De la Hoz
    Bryan De la Hoz Month ago

    It's a little disturbing that no one commented that 1.733 is the square root of 3, not the cubic root.

  • Megopteryx
    Megopteryx Month ago

    Ze goo

  • jose soto
    jose soto Month ago

    lol "Vagina Snake"

  • Jannes Planting
    Jannes Planting Month ago

    To me they all just look like a bunch of messed up Chozo Statues...

  • Dereck Heineman
    Dereck Heineman Month ago

    Why were the comics completely ignored. They almost fully explain the lifecycle of the xenomorph

  • wallawallaboy
    wallawallaboy Month ago

    I wonder if you could fit the dog in by suggesting that maybe the egg also had some of this black goo to alter the egg to accept some of the dog traits

  • Madam Tsarina
    Madam Tsarina Month ago +2

    *Kyle is incorrect - Xenomorphs don't mate - nor do they need to. The films, comics, novels, etc reveal that Facehuggers can alter their embryos to become Queens - and a Drone can actually alter its DNA to become a Queen, when none is present. Human hosts can also be captured and can be turned into eggs. There is no sex within the Xenomorph species. Kyle needs to do his homework.*

    • Ryan Swafford
      Ryan Swafford 5 days ago

      The entire purpose of mating is to get genetic diversity. They get that from the host. Thus, they have no need for mating or even sexes. The "queen" is just laying barely conscious, intermediate delivery organisms.

  • Joseph Nicely
    Joseph Nicely Month ago

    Alien3 comment=awesome.

  • SuperBendy Logan
    SuperBendy Logan Month ago

    XENO DOES NOT INTERACT WITH A XENO THE QUEEN LAYS EGGS

  • Michael Thomas
    Michael Thomas Month ago

    So are you saying the predators(yautja) have been hunting xenos since the early stages of human existence because yautja have hunted xenos for tens of thousands of years

  • Baptiste Robert
    Baptiste Robert Month ago

    Prometheus never happened

  • Damon Anton
    Damon Anton Month ago

    This is the vsauce of movies

  • Matthew Bennett
    Matthew Bennett Month ago

    You're so wrong about everything and I hate your face

  • T-rex Hunter
    T-rex Hunter Month ago

    Actually... xenomorphs dont mate, the xenomorph queen lays eggs every few seconds, its born from a royal fachugger

  • Jingo Unchained
    Jingo Unchained Month ago

    Prometheus was an abomination

  • Seth Begley
    Seth Begley Month ago +1

    Mac weldin'
    Noun


    The act of constructing a McDonald's foundation.

  • Joshua Morman
    Joshua Morman Month ago

    I like how you approached it but I think xenomorphs don’t need a male and female to reproduce, the females queen can lay eggs on their own simply by consuming enough food, the purpose male xenomorphs serve is to protect the queen since only females can lay eggs and males become praetorians but not queens while females become queens after becoming praetorians or its even possible that they are all neither male or female

  • Mark Anderson
    Mark Anderson Month ago

    So Xenomorph goo is Mutant Aids.

  • Poalo Tann
    Poalo Tann Month ago

    are you inside a glass box?

  • Biljana Stekovic
    Biljana Stekovic Month ago

    ze goo ZE GOO ZE GOO!!!!!!!!!!!!!!!!! STOP SAYING IT!

  • SHOOTING STARS
    SHOOTING STARS Month ago

    flame throwers are your best friend

  • Haylene De Clercq
    Haylene De Clercq Month ago

    Z E G O O !

  • TheRafa123
    TheRafa123 Month ago

    The life of a xeno:From a egg (neomoprh i think) that hatches wen a host is near the face huger inside the egg and get on his god dam face and gives me xeno baby ;D the face huger gives him a supli of oxygen after some time the xeno chest buster that in like a day grows in a adult drone after some time that adult goes into a warrior and pretorian that cac go into a Queen that grows a sack of eggs the she lais down the drowns make the nest that the Queen stays in normal xeno or warriors dont have to mate they dont mate a drone evolvs step by step in a Queen but there are super face hugers that have queeb babys embryos ;D and a drone to protect the new born Queen no mateing involvd no mateing beetween xenos (excuse ma ba engleash)

  • RockDragon
    RockDragon Month ago

    ZE GOO

  • Jules Savvy-Bennett

    Do you write backwards or do you write normally and flip the video

  • the laws of physics boi

    Zee goo! (Dun dun dunnnn)

  • Alex Fraser
    Alex Fraser Month ago

    I kind of want a tarantula hawk wasp as a pet now. Spiders wouldn't go anywhere near me.

  • NeoDragonCount
    NeoDragonCount 2 months ago

    Prometheus ruined the Alien franchise for me. It was much better when Xenomorphs were simply a deadly extraterrestrial fauna that the foolish humans thought they could control.

  • Callum Morris
    Callum Morris 2 months ago

    *ZE GOOH*

  • Sowilo Sky
    Sowilo Sky 2 months ago

    drills with its but makes me giggle every time

  • Eddie Arnold
    Eddie Arnold 2 months ago

    What about the squid thing from Prometheus that the woman gives birth to

  • LukeSparow
    LukeSparow 2 months ago

    Goddamnit Promethius was so dumb.

  • bigemcginn robbert james

    Another good theory I have heard is how the goo will process the DNA of whatever it has come in contact with and change it into a perfect predator to whatever that thing is

  • Dragon Gamer 2000
    Dragon Gamer 2000 2 months ago +1

    So the movies is about a black goo.... Ok

  • Duck Sandwich
    Duck Sandwich 2 months ago

    ZE-GOO

  • composerdoh
    composerdoh 2 months ago

    Great video, Science Thor. I wish you'd touched more on the implausibility of elements, or more interesting bio-chemical issues, though. Like how acid "blood" could effectively transfer nutrients within an organism, or how a kitten/small cat sized parasitic creature could feed/gestate inside John Hurt for so long without being detected by the super-advanced humans, or seemingly even his own immune system!
    I would question the plausibility of alien creatures feeding on humans, as the parasites you reference do so due to millions of years of evolving side-by-side. These wasp larvae cannot digest trees or blades of grass, or even crabs, or sharks and they actually SHARE DNA with all those things! So I can't see how realistic it is for aliens to eat humans or vice-versa, when we would presumably have FAR less genetically in common with them. But you kind-of addressed this with the "black goo" thing.

  • Sarcalogos Tortolero
    Sarcalogos Tortolero 2 months ago

    So he DID put his pp in the vagina snake

  • MR. GOONCH
    MR. GOONCH 2 months ago +1

    The hawk wasps is just a small chazador!

  • AidnbGaming
    AidnbGaming 2 months ago

    Who else heard zu goo the whole time?

  • Rathanor
    Rathanor 2 months ago

    dude you forgot to explain the general morphophysiology of a xenomorph. you only tackled it's reproductive physiology. what about it's anatomy? organ physiology?

  • Shadx27
    Shadx27 2 months ago

    Well, xenomorphs due break one rule very hard, but you have to suspend your disbelief for movies. The rule they break? Rule of conservation. (Hatcher to full size alien without eating?) They gain mass from nothing. They create chemicals (mainly acids and such) without the ingredients for it. Etc. However, still scary good times.

  • Iblis Azazil
    Iblis Azazil 2 months ago

    Who gives a shit about all this new "Alien" stuff? It surely is as elaborated and thought through as the Episode-movies of another abused Sci-Fi-Franchise...
    Too decadent. Sometimes art shows itself when something is as simple and straightforward as possible. Alien 1-3 and Star Wars 1-3 were exactly that.
    Hollywood really sucks these days. And it seems to get worse and worse, with every year...

  • matthew styles
    matthew styles 2 months ago +1

    Denim shirt really? Ok jay lenno

  • Ghengis Khan
    Ghengis Khan 2 months ago

    how do they not melt with acidic blood with a ph level of -31

  • Wesley Kitchen
    Wesley Kitchen 2 months ago

    Xenomorphs can't reproduce. The queen xenomorphs keeps making eggs I a certain spot

  • aazhie
    aazhie 2 months ago

    Makes me wonder if the hammerpedes were a dead end reproductively for the goo, or if there were tiny adorable queen 'pedes

  • Clairvoyant81
    Clairvoyant81 2 months ago

    Don't really get why the dog xeno doesn't fit in there... seems to be the exact same thing, although they could have gone further with changing the design compared to the human xenos from the first two, but other than that, that dog xenomorph works perfectly fine within the "lore".
    Off to watch your follow-up video.

  • chaz
    chaz 2 months ago

    Good luck explaining this even Ridley has no idea what aliens is anymore

  • Jason Konst
    Jason Konst 2 months ago

    Xeno means unknown and not strange

  • Федя Крюков
    Федя Крюков 2 months ago

    Wait a sec. At the beginning there was darkness... I mean, according to Promethius movie there was somekind of real xenomorph (shown on a wall picture in the Promethius) who once 'empregnanted' an engineer with a 'new life' by the facehagging process thus becoming somekind of a messiah for the engineers as they completely lost the ability to give life (e.g. reproduce) by that time. But using the xenomorph's genetic material the engineers could somehow 'seed' the worlds with their genes through the painful self-sacrifice rite shown in the movie in an attempt to recreate the 'paradise' (e.g. 'engineerhood' without mating problems) through the brute force of a natural gene-recombination by starting evolution process anew time and the time again and destroying all failed experiments. And the black goo, exactly as you told, is just a weaponised by-product of engineer's initial experiments with xenomorphic genetic material. It's all in the first draft of the script for Promethius. So xenomorphs are somekind of ancient race with a bit complex reproduction process who existed thousands of years before humans and interacted with engineers using embryo-implantation long before David who just seemed to try to make purestrand xenomorph out of the genetic hymerae the black goo created using old-fashioned selection process because he's nuts.

  • RAMPRAGE!
    RAMPRAGE! 2 months ago

    can you readress this video now that covenant has been out, since now there is more relative information

  • CC MG
    CC MG 3 months ago

    "Vagina snake"

  • The Wrench
    The Wrench 3 months ago

    xenomorphs don’t mate the queen lays all the eggs

  • ChimpGuy
    ChimpGuy 3 months ago

    You're so cute when you say zhagoo... xD

  • alphadad1966
    alphadad1966 3 months ago

    What about the Predator Xenomorp, that busts out of the chest of the Predator that hunted the Aliens in temple in Antarctica (in Alien vs Predator)? That had the 4 mandibles (2 bifurcated?) like a Predator. That would imply that the lineage of prior hosts don't really matter, and that it's more like "Alien DNA" + Host is what drives the resulting lifeform

  • Brutally Honest Skeptic

    A facehugger is an idiotic thing biologically speaking, makes not a lot of sense.
    Even in the Cotesia Glomerata example, it is the Cotesia itself planting an egg inside another animal to get shelter and food for the larvae.
    Here they nonsensically plant another step, and spawn a living being with the function to plant the larvae.
    it poses an unnecessary element of risk in being unsuccessful in reproducing.
    but fuck it,: it's Sci-Fi XD

  • Finn P
    Finn P 3 months ago

    But they were their own race, they had their own ship that had clearly been wrecked on that planet for a long time. So when did they have interaction with humans to make so many eggs that were in the original xeno ship. I know WY knew about the life form but no one seemed to even believe in aliens so the fact that they had such an advanced ship and so many eggs doesn’t make sense if humans are needed to create them.

  • casey leedham
    casey leedham 3 months ago

    DAMN NATURE, YOU SCARY!!!

  • the last knight
    the last knight 3 months ago

    After they wasps bursts out the caterpillar the caterpillar lives then defends them while there in there cacoons

  • Kai the great pig taimer

    I love his hair

  • Weldon Spivey
    Weldon Spivey 3 months ago

    That's my name. Yaaaay.

  • Z A K A R A
    Z A K A R A 3 months ago

    YAY MY SAVIOR I HATE SPIDER

  • Ramey Zamora
    Ramey Zamora 3 months ago

    Had to flip the pic, didn't ya? Shame on you.

  • ExceptThis
    ExceptThis 3 months ago

    Why did you do this? Was just about to go to sleep o.O

  • Harry Wompa
    Harry Wompa 3 months ago

    the xeno dog does make sense, if the facehuggers are also doing horizontal gene transfer. Then the dog xeno is a splice of human, cow, and goo, like deacon is a splice of human, goo, engineer, and so is different

  • Troy Tempest
    Troy Tempest 3 months ago

    800 people didn't like this? What's wrong with them!

  • Katrynna Albillar
    Katrynna Albillar 3 months ago

    I would very much like to see an updated version of this video after Alien Covenant came out, which explains how the Alien biology was manipulated to create the Xenomorph.

  • Feels Guy
    Feels Guy 3 months ago

    This guy lives in a glass box.

  • Connor Fanelli
    Connor Fanelli 3 months ago

    Isn't wanting to study them exactly what got all the other scientists killed?

  • Jack Russell Bruce
    Jack Russell Bruce 3 months ago

    Someone please make a compilation of Kyle saying ZE GOO

  • Christopher Hoyt
    Christopher Hoyt 3 months ago

    1.733 cubed equals 5.204699837. How does that make the tagline work...? Or am I doing the wrong math...?

  • Nikhil Kshirsagar
    Nikhil Kshirsagar 4 months ago +1

    did anybody notice the W on the robots fingerprints at 1:05 ?

  • Mike Santillán MX
    Mike Santillán MX 4 months ago +1

    About the Dog Alien in Alien³: humans and dogs share 84 percent of their DNA, and since the facehugger came from an egg layed by a Queen that already had human DNA, it makes sense that the xenomorph was partially humanoid and part dog. Same case with the Special Edition, where the xenomorph came from a bull (cattle share about 80% of their genes with humans).

  • Gary Maxion
    Gary Maxion 4 months ago

    I get it. "Zeh goo" is you trolling us the same as when you said Batmin and Supermin. You say them all correctly in normal conversations, but in videos, you use basic Psychology to keep our attentions. How? Psychologically, humans are creatures of habit, we dislike changes to the point of irritation or infuriation, we pay more attention to said changes, and in the cases of your videos, we humans waiting in anticipation for these changes watch the video and more than likely retain most of what is said. Touché, Kyle.

  • Scorpius
    Scorpius 4 months ago

    Za goo

  • Xeno-Huntress
    Xeno-Huntress 4 months ago

    I'm gonna share this with my Math and biology teacher...


    ZaGoo, love it XD

  • Shark_Lover
    Shark_Lover 4 months ago

    What was that sound ?

  • Hachikki Plays
    Hachikki Plays 4 months ago

    The more bugs shown and kyle explains the weaker i get. Now im scared of moving in bed

  • Srivihar Reddy
    Srivihar Reddy 4 months ago

    Finally understood aliens. Thank you

  • AnthonyPE11
    AnthonyPE11 4 months ago

    Didn’t the engineer gave birth to a weird squid thing which later impregnates the alien guy then into the Deacon

  • Bobby Ash
    Bobby Ash 4 months ago

    What was the original xenomorph ?

  • Bobby Ash
    Bobby Ash 4 months ago

    Xenomorph pathogens could be viruses

  • Bobby Ash
    Bobby Ash 4 months ago

    Essentially xenomorph pathogens are bacteria with a more complicated cell structure, instead of nucleic acids in cytoplasm. Maybe just as simple.

  • Bobby Ash
    Bobby Ash 4 months ago

    There is a canon reference to a wasp-like xenomorph species #aliencovenant (courtesy of david's experimentation)