The Most Dangerous Stuff in the Universe - Strange Stars Explained

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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!


  1. Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    6 giorni fa

    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


      2 giorni fa

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

    • Xavier animations and blogs

      Xavier animations and blogs

      2 giorni fa

      Alert meme detected

    • Tanmay Tare

      Tanmay Tare

      2 giorni fa

      Can a neutron star become a black hole ?

    • 50złマン


      2 giorni fa

      Kurzgesagt - In a Nutshell Japanese sub pls😭

  2. Pro Gamer

    Pro Gamer

    12 minuti fa

    The art style made me bust a nut

  3. esteban vega

    esteban vega

    13 minuti fa

    This is true?

  4. Aleksej Trajkovski

    Aleksej Trajkovski

    15 minuti fa

    best channel that ever existed and will exist

  5. Brandon Sergent

    Brandon Sergent

    38 minuti fa

    This video is absolutely beautiful.

  6. HgOST music

    HgOST music

    56 minuti fa

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

  7. Magnetic Hug

    Magnetic Hug

    Ora fa

    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

  8. Ray Jen

    Ray Jen

    Ora fa

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

  9. b0nes


    2 ore fa

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

  10. bixylim


    2 ore fa

    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.

  11. GigaMan795


    2 ore fa

    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?

  12. Flamer334677 Man

    Flamer334677 Man

    2 ore fa

    Hey can you do a video on article 13

  13. George HDS

    George HDS

    2 ore fa

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

  14. Susano


    2 ore fa

    Can we have a schrödinger's cat episode ?

  15. Apricots


    3 ore fa

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

  16. Ellie Spry

    Ellie Spry

    3 ore fa

    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.

  17. slashitup101


    3 ore fa

    feeling kinda strange might infect the earth later idk

  18. gato_feliz animation

    gato_feliz animation

    3 ore fa

    4:29 did they just die?

  19. Juan Navarro

    Juan Navarro

    3 ore fa

    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.

  20. Alex Hyer

    Alex Hyer

    3 ore fa

    Strange quarks sound like the subatomic equivalent of prions.

  21. The Frisk and Sans club !

    The Frisk and Sans club !

    3 ore fa

    cool another science lesson

  22. Ben TZK///Ben The Zombie Killer

    Ben TZK///Ben The Zombie Killer

    3 ore fa

    4:06 Perfectly stable, as all things should be

  23. Tom Levinger

    Tom Levinger

    4 ore fa

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

  24. AimlessPassions


    4 ore fa

    “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

  25. Cheeseburger Monkey

    Cheeseburger Monkey

    4 ore fa


  26. Cheeseburger Monkey

    Cheeseburger Monkey

    4 ore fa

    is it really green?

  27. HECKproductions


    4 ore fa

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

  28. Bobracher Zeckro

    Bobracher Zeckro

    4 ore fa

    I love this channel. 🦆

  29. E'Osiris


    4 ore fa

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

  30. Adamko Ivaník

    Adamko Ivaník

    4 ore fa

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

  31. androkles04


    4 ore fa

    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.

  32. YoloKing


    5 ore fa

    Even tho it’s not true it’s hilarious

  33. Prebuilt Snow Plays

    Prebuilt Snow Plays

    5 ore fa

    These videos just make me scared

  34. SidKillz


    5 ore fa

    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... :/



    5 ore fa

    Have you ever done a video on white holes?

  36. SidKillz


    5 ore fa

    this type of animation is what we need

  37. Mehrzad Abdi

    Mehrzad Abdi

    6 ore fa

    great video.

  38. HX3 EN/FR

    HX3 EN/FR

    6 ore fa


  39. Ronan Shepherd

    Ronan Shepherd

    6 ore fa

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

  40. TheTron08


    6 ore fa

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

  41. TheDiamondKing


    6 ore fa

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

  42. Plavi Gruja

    Plavi Gruja

    7 ore fa

    guess im a bottom quirk

  43. Mitch


    7 ore fa

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

  44. 信仰NotShepard


    7 ore fa

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

  45. Kala Devi

    Kala Devi

    7 ore fa

    Dobut is that starnge matter Does it have information

  46. Jamie Johnson

    Jamie Johnson

    7 ore fa

    StRaNgE bEaN

  47. Ceyhan Güral

    Ceyhan Güral

    8 ore fa

    Also known as.... Chemistry

  48. Jalbeelee


    8 ore fa

    Everyone: Strange matter: rick and Morty is real

  49. Bugs Bunny

    Bugs Bunny

    8 ore fa

    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.

  50. RagingTiger


    9 ore fa

    This is scary

  51. Sebas G

    Sebas G

    9 ore fa


  52. Codebreaker45


    9 ore fa

    Does strange matter contain charm quarks?

  53. Shizzy Wizzy

    Shizzy Wizzy

    9 ore fa

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

  54. nagarathna gopal

    nagarathna gopal

    9 ore fa

    Is it strange matter or zombie matter

  55. Srivatsav Kannan

    Srivatsav Kannan

    9 ore fa

    i love kurzgesagt

  56. TheIrisCZ


    10 ore fa

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

  57. Brian HL

    Brian HL

    10 ore fa

    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.

  58. Eric Menezes

    Eric Menezes

    10 ore fa

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

  59. Florian Tamm

    Florian Tamm

    10 ore fa


  60. a


    10 ore fa

    *Thanos has left the chat*

  61. Shawn Scientifica

    Shawn Scientifica

    10 ore fa

    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!

  62. Yasir Irshad

    Yasir Irshad

    10 ore fa

    But strange quarks decay fast right??

  63. Unravelling Motherhood

    Unravelling Motherhood

    10 ore fa

    What a lovely guessing game. Lol

  64. PATRICK puntastic

    PATRICK puntastic

    10 ore fa

    Cosmic cancer

  65. Hero’s Screen

    Hero’s Screen

    11 ore fa

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

  66. しまむらののワ


    11 ore fa


  67. Mob Craft 7274

    Mob Craft 7274

    11 ore fa

    Subscribe to ultimate timothy

  68. Twinrehz


    11 ore fa

    Damn, universe, u scary!

  69. KVN


    11 ore fa

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

  70. 19takata


    11 ore fa

    sounds like Evangelion

  71. Lukaszix TV

    Lukaszix TV

    12 ore fa

    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.

  72. sebbysebbseb


    12 ore fa


  73. Mahmoud Diaa

    Mahmoud Diaa

    12 ore fa

    We want an Arabia substitute please

  74. EsamoKoram


    12 ore fa

    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.

  75. Giygas_95


    12 ore fa

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

  76. Can


    13 ore fa

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

  77. Samir Lemrini

    Samir Lemrini

    13 ore fa

    Legends say the Incredible Hulk is made of strange matter.

  78. sniper 32

    sniper 32

    14 ore fa

    Still waiting for a video "What is a Force"

  79. omer demirer

    omer demirer

    14 ore fa

    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...

  80. MrOvergryph


    14 ore fa

    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.

  81. Red Pink and twice

    Red Pink and twice

    14 ore fa

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

  82. NHT 41

    NHT 41

    14 ore fa

    So..Tiberium ?

  83. Shovit Buragohain

    Shovit Buragohain

    14 ore fa

    Come on I was having a perfectly normal day and now I'm scared to death.

  84. shfma 5

    shfma 5

    14 ore fa

    I need Arabic cc

  85. Manasseh Gallemit

    Manasseh Gallemit

    15 ore fa

    Can you make a video about “what if The world is corruption free”, and what happen each country economy and peoples lovelihood. Can poverty decline?

  86. Avinav Mendu

    Avinav Mendu

    15 ore fa

    7:14 .... THE BEST SOUND I EVER HEARD!!!!!!!

  87. The Subscriber!

    The Subscriber!

    15 ore fa

    Introduction: blew me away Rest of the video: amazed Rest of the night: thoughts about the video > INSPIRATIONAL

  88. Tuấn Lại đăng

    Tuấn Lại đăng

    15 ore fa

    Đây là họ đã lấy của em da ngoài 5 gày trước đây ạ cảm ơn mọi người đã dúp Lại đăng tuấn

  89. シナチクSINATIKU


    16 ore fa


  90. KAY BEAM


    16 ore fa


  91. DerDerImmerLaaagt


    16 ore fa

    So... strange black holes maybe exist too?

  92. Eugeny Diduk

    Eugeny Diduk

    16 ore fa

    Sounds like this quark matter can be used to convert regular matter in the most energy efficient solution of storage and medium between fossil and engine. Cool.

  93. Eugeny Diduk

    Eugeny Diduk

    17 ore fa

    How to survive in ultra tight space - guidebook for nuclea.

  94. XAndroid1


    17 ore fa

    It’s an infinity stone

  95. bar snack

    bar snack

    17 ore fa


  96. mihayy5


    17 ore fa

    Who choose the name of the channel? Anyways awesome content like always.

  97. Pixelixture


    18 ore fa

    Thanks for scaring the crap out of me!

  98. 3ICE


    18 ore fa

    what is up with the subtitles this video? they are hard to see blue I tried reset, nothing changed

    • 3ICE


      18 ore fa

      found it! disable video override to get back your preferred subtitle styles. Damn it Kurzgesagt, stop messing with accessibility features. Fancy = not useful Still love you.

  99. Jack Lopresti

    Jack Lopresti

    18 ore fa

    All stars are electricity connected which can only be saw with different wavelengths

  100. Ryan Clark

    Ryan Clark

    19 ore fa


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