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.

    • cyka neu
      cyka neu


    • Jenny Scott
      Jenny Scott

      Thank you 😊 for your support and your name and the best for your as well as your own personality

    • Pandasss

      What happens if it toishes a human? Will it turn us to superheroes 😂 ?

    • Anthony Umana-Paniagua
      Anthony Umana-Paniagua

      I past the 6th grade 😀

    • conmadben

      Thx guys. I needed my monthly does of existencial crysis...

  • Metin Bogaz
    Metin Bogaz

    Why does it look like the thing in Ricks portal gun? Coincidence? I think not!

  • Dvrtagnan crossland
    Dvrtagnan crossland

    I love this muhfuckas voice no homo

  • Ty Ice Blaze
    Ty Ice Blaze

    Kurzgesagt: This substance is capable of death within natural resources. Me: I'm never going outside again.. Strange boi: wHaT wHy nO0 i nEeD maH f0d

  • Scarecrow Studios
    Scarecrow Studios

    6:20 Rick, I Think Your portal Gun Is Malfunctioning

  • Doppler

    basically rick and morty, think about the truth behind some thoughts that involve some thinks and research on your own

  • Satya Panigrahi
    Satya Panigrahi

    Frightening, mesmerizing and absolutely beautiful.😍

  • Putri putriii
    Putri putriii


  • Putri putriii
    Putri putriii


  • Roasted Toast
    Roasted Toast

    4:06 thanos:as everything should be...

  • Chief Hamhawk
    Chief Hamhawk

    “All the empty space is now filled with particles that really don’t want to be close to each other.” You just summarized every school dance ever

  • Sage Blyth
    Sage Blyth

    2:19 That's the cutest thing I've seen today

  • SirDoi

    Did Dr. Strange make this matter to bend rules?

  • Shounak Kale
    Shounak Kale

    Very nice video

  • Charmaine Russell
    Charmaine Russell

    I would like to forget about strangelets....

  • MrMoticuko

    Stranger Things confirmed

  • Kelsang Gyudzhin
    Kelsang Gyudzhin

    2:31 Oh god their little faces I love them I just can't even XD

  • Kutluhan Bilgeşah Bayzan
    Kutluhan Bilgeşah Bayzan

    What if humans use strangelets for weapon world and galaxy is be die.

  • Iustinian Motac
    Iustinian Motac

    Thank you for existing.

  • Taufik Nur Rahmanda
    Taufik Nur Rahmanda

    I have a different though about this. I think the core of neutron star is a very small singularity and maybe that's a dark matter; no light can illuminate it and it's not harmful, it bends space and time but can't interact with physical thing because of its size. This is just my hypothesis though.

  • TheFamousArthur

    Where are CHARM, BOTTOM, and TOP quarks?

  • Albert25012501

    So....that would be a really bad idea to forge THAT hammer for Thor.....

  • Cassia Chloe
    Cassia Chloe

    this animator must smoke a lot of dmt its beautiful

  • Bianca Pilichi
    Bianca Pilichi

    Kurzgesagt's videos always give me a slight, ancestral anxiety

  • mtilford

    So...Strange matter might work like Vonnegut's "Ice-9?" Between this and the potentially lurking vacuum decay catastrophe, I don't even know why I put on pants anymore.

  • 윤우성


  • Dan Cooper
    Dan Cooper

    I'm not going to worry about it.

  • Eurus

    doctor strange: hOLD MY BEER

  • P G
    P G

    So that is a tiberium.

  • keith dunham
    keith dunham

    really an ad about tat stupid ark in kentucky ??


    Strange matter: *Exist* Dr strange: Strange up boi!

  • Nathan Stene
    Nathan Stene

    Hey, I study physics in Brussels and I'm reading a few scientific articles on the subject. In particular, it's been 35 years we know strangelets are not dangerous whatsoever. Here it is, supported by all background and calculations you might want to check : "If quark matter with strangeness is bound, then energetically it can grow indefinitely by absorbing nucleons. On might at first think that quark matter would be dangerous in contact with ordinary matter, but this is not the case. [...] To balance the chemical potential difference, there will be an almost equal electrostatic potential of +50MeV at the surface of (and throughout) a nugget of quark matter, this potential will be more than adequate to repel positively charged nuclei at ordinary temperatures or at reasonably low velocities. Quark matter is in this respect no more dangerous than oxygen." Edward Witten, "Cosmic separation of phases", Physical Review D,1984 Also, I have checked your source for your "end of the world" theory - your source EXPLICITELY says the scenario is unlikely because it would mean having negatively charged strangelets. Once again I'm a bit disappointed by the way you guys transmit scientific information.

  • XL Gamer
    XL Gamer

    Wait he if a strange matter enter to our atmosphere so it will transform our atmosphere to strangemoshper so it is meaning........... SmOkE wEeD eVeRyDaY (don't use weed for you and people who loves you) (Sorry for bad my bad english there is can be mistakes)

  • Da Drumma
    Da Drumma

    Maybe strange matter is the ultimate form of existence and we're fools to resist assimilation.

  • LegendaryDoge

    How to make this video 2 second long Strange Matter is Strange

  • Adasha Stewart
    Adasha Stewart

    Being that black holes are possibly natural universal time machines I don't know if throwing strange matter into one is a good idea if we had the means to do so. You're literally shooting in the dark

  • World Shell
    World Shell

    Who knows this strange stuff can be used as unlimited power source that could disobey thermodynamic laws

  • Depopa

    thanks for the anxiety

  • Fancy Hotdog
    Fancy Hotdog

    Kurzgesagt: Perfectly dense, perfectly stable, indestructible. My brain: *Perfectly balanced, as all things should be*

  • Regine Young
    Regine Young


  • Aristides e a Galáxia
    Aristides e a Galáxia


  • Oliveer Mitteer
    Oliveer Mitteer

    Warum ist da ein Fidget Spinner im Thumbnail ? English: Why is there a Fidget Spinner in the Thumbnail ?

  • MLG Master
    MLG Master

    If you think we’re gonna freeze to death without a brilliant bright sun come to Manchester we don’t see the sun we see gray gray gray

  • MLG Master
    MLG Master

    D E N S E

  • ganymede242

    Quark should rhyme with quart, not fart. From Murray Gell-Mann "The Quark and the Jaguar": "In 1963, when I assigned the name "quark" to the fundamental constituents of the nucleon, I had the sound first, without the spelling, which could have been "kwork". Then, in one of my occasional perusals of Finnegans Wake, by James Joyce, I came across the word "quark" in the phrase "Three quarks for Muster Mark". Since "quark" (meaning, for one thing, the cry of the gull) was clearly intended to rhyme with "Mark", as well as "bark" and other such words, I had to find an excuse to pronounce it as "kwork". But the book represents the dream of a publican named Humphrey Chimpden Earwicker. Words in the text are typically drawn from several sources at once, like the "portmanteau" words in "Through the Looking-Glass". From time to time, phrases occur in the book that are partially determined by calls for drinks at the bar. I argued, therefore, that perhaps one of the multiple sources of the cry "Three quarks for Muster Mark" might be "Three quarts for Mister Mark", in which case the pronunciation "kwork" would not be totally unjustified. In any case, the number three fitted perfectly the way quarks occur in nature."

  • Carolina Montealegre
    Carolina Montealegre

    Someone thought about MOONCAKE from Final Space?

  • Crisselle Heart
    Crisselle Heart

    supernova to neutron star to quark matter to quark star to strange quark to strange matter to strangelets

  • Rohan Shetty
    Rohan Shetty

    Nope, I I still don't get it

  • 53 ' er
    53 ' er

    I thought matter means something different like "it doesnt matter" or is it used as well for Material

  • 53 ' er
    53 ' er

    Is this "strange thing" thing proven or do they just asume that

  • Alexandros Huang
    Alexandros Huang

    Wait a second wouldn’t the strange matter infect the neutron star

  • vegetariansteak

    so basically subatomic zombies

  • Gamma Del Ray
    Gamma Del Ray

    Being infectiously converted into some strange nuclear matter by a small droplet of neutron star core sounds kind of romantic in my eyes.

  • SmilingDude 4325
    SmilingDude 4325

    Bends the rules of the universe = SCP.

  • Pig Ster
    Pig Ster

    So strange quark is vibranium

  • LooneyScouter

    Is this just based on guessing? XD Can't imagine humans to understand something so complex and unknown.

  • Nick Siegner
    Nick Siegner

    I love how the whole commentsection is just memes about strange matter

  • Zack Wright
    Zack Wright

    So its like a sickness that could spread through out the Multiverse and destroy everything it touches....great

  • SevenPheonix329

    *wibbily* matter

  • Steve Chu
    Steve Chu

    Strange matter is made from Doctor strange

  • hike rieger
    hike rieger

    Time to play with strange matter *Drops someone: you doomed us all

  • Burhan Sabaz
    Burhan Sabaz


  • KaylaByCandlelight

    Can you do a video on an EMP

  • Jace Baptista-Allan
    Jace Baptista-Allan

    Is he suggesting that we use the densest thing in the universe as a source of power? Like: Scientist: picks up a drop of strange matter between tweezers Strangelet: travels straight to the center of earth, closing up the hole behind it

  • Alex Ng
    Alex Ng

    Denses material in the universe ( from weakest to strongest) Our Sun Neutron star Black hole Nokia3310

  • Ghost Reportin'
    Ghost Reportin'


  • / CringeLord /
    / CringeLord /

    I like how this channel uses birbs

  • Leo He
    Leo He

    Might just be me but isn't this argument just a bit flawed. Suppose strange matter does exist as noted and that theres a lot of it. If we assume that everything that contacts strange matter wants to change to enter the stabler and stronger form of the strange matter, and there was a lot of strange matter in the beginning of the universe, why isn't everything already strange matter. Why have we no knowledge of it until now. I want to note that in the beginning, Kurzgesagt noted that there is a chance that strange mattter converts everything it contacts yet for the entire second half, this off chance suddenly turned definitive, as if it were a fact rather then a theory

  • Arthas The Lich King
    Arthas The Lich King

    Plot twist:we are all already made of strange matter and we just don't know it

  • Arthas The Lich King
    Arthas The Lich King

    Plot twist:we are all already made of strange matter and we just don't know it

  • Rubem Parisi
    Rubem Parisi

    Im the subscriber number 8.955.515

  • Drew Johnson
    Drew Johnson

    It should probably be noted that this videos topic is hypothetical in every sense of the word. There has been no observational confirmation of stable stranglets, and current observations seem to favor the idea that neutron stars (or at least their surfaces) are comprised of regular, nuclear matter. Cool video, and a good treatment of a speculative and interesting theory, but you should probably make it more clear that this is more of an astrophysical curiosity than anything else right now.

  • Flame Haze Mithril
    Flame Haze Mithril

    Hmm, I just got an idea for a new missile warhead. Thanks Kurgezagt 😂

  • ibrahim Tariq
    ibrahim Tariq


  • ibrahim Tariq
    ibrahim Tariq

    amazing videos I subbed and liked THANKS ALOT!!!

  • FLX Sam
    FLX Sam

    Wow humans are definitely not ready to face that sort of problem

  • Squishy Spud
    Squishy Spud

    Kurz gesagt, wir stecken in der Klemme

  • Obito Uchiha
    Obito Uchiha

    I am more afraid watching Kurzgesagt videos compared to watching horror movies.

  • Blade of Godolo
    Blade of Godolo

    question, what the hell would happen if two black holes meet my first comment on any social media and this is it, its been bugging me for quite some time now. i know there are websites dedicated to this type of stuff but u guys make it simpler and to be honest fun to watch even if there a bit dark still i would like it if anyone could help understand.tnx a lot,peace!!✌️

  • StijntjeHap

    The more I watch kurzgesagt, the more i know about how much I do not know, and the more i start feeling like the world can end any second lol

  • Arthur morgen
    Arthur morgen

    Nah rdr2 is 1000000000000 more times dangerous

  • LeQuiller

    Zombie infection????

  • Monique Ward
    Monique Ward

    I don't know if it's just me but I listen to Kurzgesagt videos and mostly not watch it. I find the music here to be louder if not the same as the volume of the content audio. A little distracting. Other than that it's a good video. Thanks!

  • Pro SKIMON5
    Pro SKIMON5

    1:08 neuciai Edit 1: die

  • Pro SKIMON5
    Pro SKIMON5

    pin me

  • KSR3

    quarks = quacks

  • Mat E
    Mat E

    "In the beginning God"

  • Gordon B
    Gordon B

    Top 3 on IT-my. Teaching you something in an entertaining way, instead of stupid cat videos and people farting....

  • Pro Odermonicon
    Pro Odermonicon

    Strange matter = exotic matter?

  • Peanut butter
    Peanut butter

    ......thanks kurzgesagt now I have a new fear

  • zazaplus200 7
    zazaplus200 7


  • Niko

    Wow! I can die literally any second!

  • Sweet and Sour
    Sweet and Sour

    All I hear is “quack”.

  • cody taylor
    cody taylor

    I wonder what would happen if a strangelet entered a singularity, or if a gamma ray burst shot through a strange star. Does dark matter convert to strange matter over time as well as regular matter would. What if something was shot through a strange star at the speed of light? Would its matter debilitate fast enough to become strange matter. Would strange matter be affected by a black hole as other matter would since it is the most impenetrable thing in the universe ( well ... other than flex tape at least ). This video gives me a lot of questions about strange stars.

  • Super Clutch
    Super Clutch

    we need a movie about this

  • Michael Chen
    Michael Chen

    These videos scare the shit out of me...

  • Austin Love
    Austin Love

    5:02 plot of The Blob?

    • Austin Love
      Austin Love

      535 ryu18-10-

  • Jaspreet Singh
    Jaspreet Singh

  • Chenzhong Wang
    Chenzhong Wang

    4:25 shouldn't the glass turn into strange matter instead of cracking?

    • Sir Angelus
      Sir Angelus

      Chenzhong Wang YESS

  • Kopek Kopkowy
    Kopek Kopkowy

    Is strange matter green?

    • Randomness Productions
      Randomness Productions


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