The Most Dangerous Stuff in the Universe - Strange Stars Explained
Kurzgesagt – In a Nutshell
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Inside neutron stars we can find the weirdest and most dangerous substance in the universe: Strange matter. What is strange matter, how dangerous is it and what can it tell us about the origin of the universe?
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Help us caption & translate this video!

  • Kurzgesagt – In a Nutshell
    Kurzgesagt – In a Nutshell

    To support Kurzgesagt and learn more about Brilliant, go to and sign up for free. The first 688 people that go to that link will get 20% off the annual Premium subscription.

    • verycrazyguy1

      Now the only science that you're missing is ascension sciences

    • Xavier animations and blogs
      Xavier animations and blogs

      Alert meme detected

    • Tanmay Tare
      Tanmay Tare

      Can a neutron star become a black hole ?

    • 50złマン

      Kurzgesagt - In a Nutshell Japanese sub pls😭

  • Johnathon Landis
    Johnathon Landis

    I don't know if this true or not, but I always thought that when a star explodes, it would help continue expanding the universe. So I always thought the universe would continue expanding for a long time as long as stars explode. This made me to also believe that it is very possible for the universe to be way larger than what we initially believe considering it would expand from ripples. Much like how when you throw a stone a ripple continues on for a while. So a star exploding would expand the universe multiple times. That was always my thought. I don't know if that is true though. Haha

  • Pranay Sarveiya
    Pranay Sarveiya

    The flood from Halo

  • GalaxyOfReeses KIng
    GalaxyOfReeses KIng

    Death Battle: "Unless you're SUPERMAN!"

  • William and William
    William and William

    Holy Guacamole. Another thing to worry about today.

  • Smaug the Dragon
    Smaug the Dragon

    Ok, I'm honestly not convinced that this would happen. What's stopping the quarks from decaying once they're free?

  • Rouge_ Grenade
    Rouge_ Grenade

    Basically zombie virus but alot more worse and cna infect planets too

  • Hadley Canine
    Hadley Canine

    Was that a launch arcology at 7:06?

  • Jeremy Morris
    Jeremy Morris

    That's okay I didn't really need to sleep tonight

  • Jimmie Eakins
    Jimmie Eakins

    Matter: *just sitting there* Strange Matter: *its free real estate*

  • Antivirus

    Quacks 101

  • Mackenzie Beeney
    Mackenzie Beeney

    ....that is utterly bizarre, and I am not understanding how Strange matter assimilates all other matter.

  • Ancap Zombie
    Ancap Zombie

    Why'd this show up in my youtube music mix?

  • Darcy Moss
    Darcy Moss

    Couple thousand years ago motherfuckers where impressed by fire and whose stick was pointier.

  • Coded x5
    Coded x5

    Almost a 9 million subs

  • Thomas Dickson
    Thomas Dickson

    intergalactic std

  • TrissiSenpai

    Strange Matter converts earth into Strange Matter. Some bird: Learning new stuff on brilliant

  • Indago

    Question- If our brains evolved to understand language and it's concept, then could we evolve to understand or imagine how space growing would look like? Would we be able to create an image in our minds of what came before the big bang?

  • Rome101yoav

    While we are all happy to see Kurz back on track with cool physics explained in layman's terms, we do need to take a moment and appreciate Steve Taylor, the amazing narrator. Mr. Taylor, you are doing us all a great service, thank you!

  • Pro Gamer
    Pro Gamer

    The art style made me bust a nut

  • esteban vega
    esteban vega

    This is true?

  • Aleksej Trajkovski
    Aleksej Trajkovski

    best channel that ever existed and will exist

  • Brandon Sergent
    Brandon Sergent

    This video is absolutely beautiful.

  • HgOST music
    HgOST music

    Scientists: how should we name them? Another scientist: just put strange in the beginning

  • Magnetic Hug
    Magnetic Hug

    Human existence doesnt make any fucking sense by occidental logic, so how tf did we come up with the idea of reasoning and logic? Is it natural, is it not? We are such limited beings bro wtf

  • Ray Jen
    Ray Jen

    Can you explain what would happen with the other 3 varieties of quarks? Or would the same reactions occur?

  • b0nes

    How can Earth freeze to death if Earth is converted to Strange Matter?

  • bixylim

    If strange matter could convert any other matter into itself, wouldn't it convert completely the neutron star that contains it first? And we should have found many strange stars already, considering strangelets could convert many other stars as well.

  • GigaMan795

    So why can't we just follow the splatter of nutron star collisions so see if there is any statistical increase in nutron stars there?

  • Flamer334677 Man
    Flamer334677 Man

    Hey can you do a video on article 13

  • George HDS
    George HDS

    The more i know about our universe, the more dangerous it looks like.. Awesome!

  • Susano

    Can we have a schrödinger's cat episode ?

  • Apricots

    Strange matter, dark matter, dark energy, black holes... When will we understand them all?

  • Ellie Spry
    Ellie Spry

    Before watching the video, I thought that it being called Strange Matter had to do with quarks (Strange and Charm quarks, to be precise) Im only 2 minutes in, so I'm just gonna.. uhh.. keep watching.

  • slashitup101

    feeling kinda strange might infect the earth later idk

  • gato_feliz animation
    gato_feliz animation

    4:29 did they just die?

  • Juan Navarro
    Juan Navarro

    When you said that it takes you 1200 hours to make a video. I did the math and if you work without sleeping it would take you 50 days. But with sleep it would take you 100 days if you work 12 hours a day. So I think you lied. No offense.

  • Alex Hyer
    Alex Hyer

    Strange quarks sound like the subatomic equivalent of prions.

  • The Frisk and Sans club !
    The Frisk and Sans club !

    cool another science lesson

  • Ben TZK///Ben The Zombie Killer
    Ben TZK///Ben The Zombie Killer

    4:06 Perfectly stable, as all things should be

  • Tom Levinger
    Tom Levinger

    If strange matter can destroy stars why can't it destroy netron star ?

  • AimlessPassions

    “We live on a placid island of ignorance in the midst of black seas of infinity, and it was not meant that we should voyage far.” H. P. Lovecraft, The Call of Cthulhu

  • Cheeseburger Monkey
    Cheeseburger Monkey


  • Cheeseburger Monkey
    Cheeseburger Monkey

    is it really green?

  • HECKproductions

    if there are so many strangelets why are there not many many suns and planets and asteroids that have been converted to strange matter?

  • Bobracher Zeckro
    Bobracher Zeckro

    I love this channel. 🦆

  • E'Osiris

    Shut the hell up with your People: My dick: imma fuck y’all It’s stupid....

  • Adamko Ivaník
    Adamko Ivaník

    I would like to detonate a 100,000 bombs in the neutron star Also /You can kill the universe in seconds ...

  • androkles04

    One does not simply watch a kurzgesagt video just once. It requires at least two full passes: one to take in the wealth of new knowledge, and one to take in the absolutely adorable animations. Personally, I recommend spending two passes for each of the two.

  • YoloKing

    Even tho it’s not true it’s hilarious

  • Prebuilt Snow Plays
    Prebuilt Snow Plays

    These videos just make me scared

  • SidKillz

    this whole video went into its own contradictory when you said about big bang... its still a theory... otherwise we wouldnt need to find out the origin of universe.... all of this is just contradictory stuff... :/


    Have you ever done a video on white holes?

  • SidKillz

    this type of animation is what we need

  • Mehrzad Abdi
    Mehrzad Abdi

    great video.

  • HX3 EN/FR
    HX3 EN/FR


  • Ronan Shepherd
    Ronan Shepherd

    I strange matter insists inside a neutron star shouldn't it convert the rest of the star into strange matter?

  • TheTron08

    Haven't had an existential crises in a bit? Boy does Kurzgesagt have a fix for that!

  • TheDiamondKing

    5:26 Who feels bad for the earth? Just me? Ok

  • Plavi Gruja
    Plavi Gruja

    guess im a bottom quirk

  • Mitch

    I guess if that happens, we'd feel like strangers in a strange land. Well, no, we'd be dead. But, still.

  • 信仰NotShepard

    Thanos: kills half of universe Strange Matter: HOLD ME BEER

  • Kala Devi
    Kala Devi

    Dobut is that starnge matter Does it have information

  • Jamie Johnson
    Jamie Johnson

    StRaNgE bEaN

  • Ceyhan Güral
    Ceyhan Güral

    Also known as.... Chemistry

  • Jalbeelee

    Everyone: Strange matter: rick and Morty is real

  • Bugs Bunny
    Bugs Bunny

    Oh yeah lets go get us some of that strange matter and weaponize it!!! Then we can FEAR Monger all our enemies. Until they get themselves some then we can M.A.D. any aliens out there. Scientists are psychotic these days.

  • RagingTiger

    This is scary

  • Sebas G
    Sebas G


  • Codebreaker45

    Does strange matter contain charm quarks?

  • Shizzy Wizzy
    Shizzy Wizzy

    Or what if Strange Matter has properties of exotic matter, hooray for the warp drive!

  • nagarathna gopal
    nagarathna gopal

    Is it strange matter or zombie matter

  • Srivatsav Kannan
    Srivatsav Kannan

    i love kurzgesagt

  • TheIrisCZ

    Zombies. Space zombie particles... I don't understand anything anymore.

  • Brian HL
    Brian HL

    okay, i watched this due to a healthy scientific curiosity, and now i know that curiosity is a stranglet that will kill the cat that found it and everything else on this planet. that's great; because i didn't already have enough things to be worried and paranoid about already.

  • Eric Menezes
    Eric Menezes

    considering all the things in the universe that could kill us, how the hell are we alive ....

  • Florian Tamm
    Florian Tamm


  • a

    *Thanos has left the chat*

  • Shawn Scientifica
    Shawn Scientifica

    Stuff like this make me wish I had stuck with theoretical physics and not gone into engineering. This is Super Hero/Villain universe level stuff happening!

  • Yasir Irshad
    Yasir Irshad

    But strange quarks decay fast right??

  • Unravelling Motherhood
    Unravelling Motherhood

    What a lovely guessing game. Lol

  • PATRICK puntastic
    PATRICK puntastic

    Cosmic cancer

  • Hero’s Screen
    Hero’s Screen

    Why your voice sound like you try-hard narrator from blue-planet

  • しまむらののワ


  • Mob Craft 7274
    Mob Craft 7274

    Subscribe to ultimate timothy

  • Twinrehz

    Damn, universe, u scary!

  • KVN

    Space video have been popin lately. Whats going on....

  • 19takata

    sounds like Evangelion

  • Lukaszix TV
    Lukaszix TV

    I rember video about wormholes You did say that if we want to create a wormholes we need exotic matter, maybe strange matter is that thing, if strange matter is created because of won fight with gravity it may keep wormholes open.

  • sebbysebbseb


  • Mahmoud Diaa
    Mahmoud Diaa

    We want an Arabia substitute please

  • EsamoKoram

    Seems the science is really confused right now and having all the answers for something that not certainly exists and not having them for stuff that actually exists.

  • Giygas_95

    Strange matter... it's come to bargain.

  • Can

    what the freak man I clicked on a song with the my mix +50 thing so why is this in with the songs ????

  • Samir Lemrini
    Samir Lemrini

    Legends say the Incredible Hulk is made of strange matter.

  • sniper 32
    sniper 32

    Still waiting for a video "What is a Force"

  • omer demirer
    omer demirer

    Hey kurzgesagt please make a video about 4 th dimention there is not a perfect video on this topic and I think no one did understand it so please make a video about 4th dimention...

  • MrOvergryph

    5:53 division by zero detected. You say strangelets can cause the sun to become a strange star and earth would freeze to death. Before I can agree that this is possible, I'll have to ask you quite calmly to explain what happens to the energy released from the original 2 stars colliding? You claimed in this video it would spew out in all directions. If that is true, then the strangelets would inevitably bump into other particles of those two stars and convert the entire explosion into, dare I say it, a strange explosion. My argument is, if this stuff is contagious to matter, we'd see its mass before it entered our solar system. Its mass would be huge, having consumed the majority of the original 2 stars which collided, along with space debris for millions of light years before it every came close to physically touching our sun. so, possible/notpossible? you tell me! i suspect strangelets are transformed under the conditions of the neutron star ONLY, which, after exploding, would no longer be applying its rules, and so these strangelets, as well as every other part of the cores of those stars, will transform again, likely no longer being strangelets. if the state of matter that is a strangelet is as ideal as you propose in this video, the entire universe would never have changed its matter to any other form yet we have countless forms of matter and so that suggests different geographical? areas inside the universe might have different "ideal" forms of matter. and so strangelet existing outside neutron star would then, what? evaporate due to hawking radiation? mutate/transform into a not-strangelet? whatever it used to be, perhaps? space dust or something? probably space dust. saying the only way to get rid of it would be to throw it into a black hole could not possibly be accurate because like i already said it's not already everywhere in the universe as this video suggests.

  • Red Pink and twice
    Red Pink and twice

    There were probably strange force at some point which get attracted by strange force

  • NHT 41
    NHT 41

    So..Tiberium ?

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