The Most Dangerous Stuff in the Universe - Strange Stars Explained

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.
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?
Support us on Patreon so we can make more videos (and get cool stuff in return):
Kurzgesagt Merch:
The music of the video here:
THANKS A LOT TO OUR LOVELY PATRONS FOR SUPPORTING US:hamza, Philippe Hébert, Evan Brydon, Małgorzata Szweda, Patrick Holt, Rashed Talukder, Erlend Rullestad, Goddess_By_Night, Simon Herbert, Nadia, Michael Coates, Rodney Griffin, Mario Rubio, Jason Nelson, Meet Shah, Paul Bartos, TeeJay Kalra, Yaron Blinder, Haku, Joe Cervantes, Silvina S., nobunee, Luna, MATTHEW SUPPLE, Brandon Hawkins, Peter Waller, Evan Mishkin, Nassim Jahnke, Kolin Din, Josh Sweeney, Thomas, Miguel Gonzalez,Brandon Williams, Vasileios, Denver Harward, ahmad albaghli, Gary Ares, Deepak Unni, Edward Chang, René Schulz, Dongyun Shin, Brian Peterson, sharl, JayBiesh, Gaël Romero-Poesen, Callum Haywood, Sean Muir, Ting Sun, Christopher Barback, Amir Ashtari, Domokos Sándor, Xavier Barton, gaurdianaq, Jelizaveta Chern, botbot94, Thomas Burns, GOTY8, Chris, EO, renzoz, SnowCascade, Stefan Ackermann, Peter Seel, Giovanni Balduzzi, Jens Knutson, Sucha Smanchat, Tarvo Reinpalu, Ryan Halsey, Justin Gries, Luke Ratzlaff, Matthew Fontana, Mert Ozalasar, Luna, Sami Kolari, Andrew Diamond, Joe Verstraete, Eskel, Fernmyth, Robert Winkler, Andre Schreder, Gabriela Kownacka, Ben Marsh, Francois Weber, andi smithers, Thomas Thibault, Yann, Mattia Thibault, Zxios, Daniel Henry, Frank, Nicolas Baert, Chandler Westfall, Giovanni Lopez, Andres Sepulveda, Kevin Young, Christof Stanits, Daniel, Yining Chen, Andreas Barth, Matthias Humt, Daniel Ramirez, Chatchavan Wacharamanotham, Mateusz K, Paul Maree, Pouja Nikray, Joe Snaza, Garrett F, Thawsitt, Danielle George, TK Tang, Bren_Flnt, Sara Clayton, Max Wong, Ju-Fang Hsu, Ali Shaikh, Felipe Oliveira, Sygmei, Travis Foudray, Kyle Ratliff, Nymaas, Kaelan Aubin-Déry, Kyrian, Alex Malinovich, Tom Smakman, ahmad muzakki, Gary So, Paul Matteo, Matt Lloyd, Simon Biller, Bausti, Jess Sevilla, France Lipuzic, Tucker Nielson, Nicholas Rabuck, John DiMartino, Justin McBride, Jonathan Cole, Prade, Sahiti Seemakurti, Chuck Badger, Ryan Halbig, Justinroiland, Pedro Ribeiro, Monica Frøystad, Martin Breiner, Ken Nagai, Maxim Therrien, Fabio Nukui, Daniel Gustafsson, Ruud, Charles Simmons, Harkoni, Kevin Konings, CaptainSunshine, Jeremy Patton, Никита Чижов, Mike Cox, Ken Klavonic, Dan Desilets, edward wang, Davor Kirbiš, Genji Lim, twosack, Lugia Seagull, Tien Nguyen, Aseef Ismail, Justin Comins, Ilias Koulalis, Jonathan Perrelli, Kelvin Koh, Cellhawk, Mike Rapin, Spencer Tseng, Nicholas Jervis, Zach Pope, Michael Yotive, Jan-Maarten Tromp, Luke Dickinson, Tyler VanZuilen, Alexander Yu, Li Ding, Cakemeister, Hudson Akridge, Kaloyan Simeonov, Rareș Mirică, Michal Klik, Puddlewhite, Adriaan Jansen, Ouros, Maddox Mayo, Blank, Willy, Brian Kale, Gordan Šegon, Daniel Steinberg, Patrick Tardif, John Oneal, River James, Lukas Kurz, John Logoyda, Kenn, Jonathan Massuchetti, Brian Hu, Philip Alexander, Artemil, Lucas Schleicher, Teyloll Z, Patrick Neary, Tim Andreev, Lily Lau, Chris Shefler, Peter Lindeberg, Peter Davis, Triet Lieu
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.

    3 mesi fa
  • Junior Gabe
    Junior Gabe

    The quarks look like miis. From the wii.

    8 giorni fa

    Strange Matter is purely Science fiction it Doesn't Exist Neither do black Wholes your whole production is Cartoons because it's all Science Fiction

    10 giorni fa
  • Mattew Stone
    Mattew Stone

    I Like your video

    17 giorni fa

    Does black holes die out?

    18 giorni fa
  • Felix Reuß
    Felix Reuß

    Yo i thought of a way how humankind could survive the cold-death of the universe. I know its just a theory but please follow me on this. So we know if humans survive long enough we can become an atleast type 2 society. If we get this far we could decompose dead stars and gas planets drive them both together and create a star artificially. I must admit i know very little about it but it could be possible. I mean we could create a dyson sphere or smthng around it and transport it via an hyperspace engine to a gas planet decompose both and see the star form it self. With decompose i mean blowing them up but with much less boom ya know? Maybe a laser of sorts or other things. Its crazy i know but it sounds great in theory. Waht do you think? Let me know ^^

    Mese fa
  • erzuh

    this made me scared that one day im just going to become a strangelet

    41 minuto fa
  • Booper Dooper Vlogs
    Booper Dooper Vlogs

    More of these videos will be found in Area 51

    Ora fa
  • DougtheDonkeyTV

    Meh, it’s all gonna be eaten by black holes anyways lol

    Ora fa
  • Uboa

    This kinda reminded me about Phazon from Metroid Prime, although it's different from a Strange Quark the fact that it essentially corrupts everything it touches is cool and scary.

    Ora fa
  • This is Patrick
    This is Patrick

    In a nutshell: space hella weird

    2 ore fa
  • surearrow

    >> Scientist are learning that these videos are awesome..."or maybe not".

    6 ore fa
  • Mr Lordblader
    Mr Lordblader

    Fun fact: fun facts are not fun :)

    16 ore fa
  • Agu Rich
    Agu Rich

    Kurzgezagt: stragen qurkz convrt to rglar qurkz Kurzgezagt: it createz stragen matter

    21 ora fa
  • Agu Rich
    Agu Rich

    Kurzgesagt: it cud destroy da wrld Kurzgesagt: itz stabel datz y cud destroy da wrld

    21 ora fa
  • 32gigs

    >really don't want to be together Can relate

    23 ore fa
  • ven ra
    ven ra

    Hmm... this is 'strange'.

    Giorno fa
  • Richard Polster
    Richard Polster

    What the duck

    Giorno fa
  • PRGG

    Everyone gangsta untill strangelet touches them

    Giorno fa
  • Edin Meco
    Edin Meco

    Fascinating. The Universe truly is a strange and we may never understand it. Strange Matter could literally be heading to earth at a fast speed but the Strange Matter could be trillions upon trillions of kilometres away.

    Giorno fa
  • A Google User
    A Google User

    We all already know how the universe began, but it's a little religious so I'm not going to say

    Giorno fa
  • Appoddigare

    Universe is such a creepy place full of creepy stuff

    Giorno fa
  • Leela Patil
    Leela Patil

    just put another qark ather than up and down ones maybe

    2 giorni fa
  • Damir Vakhitov
    Damir Vakhitov

    I don't think this is the entire story. While it is true that strange matter can be contagious, the strangelets can also be ionized or something what makes them not harmful.

    2 giorni fa
  • AntSwift1

    sounds like a black hole, because they would also eat up light making them black

    3 giorni fa
  • heshers

    strange matter is how the original xbox intro was made

    3 giorni fa
  • Samuel Li
    Samuel Li

    When we have enough technology (like advanced particle accelerators) we can use strangelets as weapons! Most efficient celestial body destroying method ever.

    3 giorni fa
  • 陳達運

    Quack:too much pressure, I wanna be alone

    4 giorni fa
  • Abdul Rahman
    Abdul Rahman

    Well, now we know what Vibranium is made up of....

    4 giorni fa
  • vengful howl 2358
    vengful howl 2358

    Nobody: Strange matter: perfectly all things should be.

    4 giorni fa
  • Lothric Dogs
    Lothric Dogs

    But when is the flood coming?

    4 giorni fa
  • Steve Wharram
    Steve Wharram


    4 giorni fa
  • Aidan Adkins
    Aidan Adkins

    2:33 The infinity stones.

    5 giorni fa
  • Kiz Armstrong
    Kiz Armstrong

    I ❤️❤️❤️❤️❤️ your videos so much and I ❤️ science 🧪

    5 giorni fa
  • Kevin Müller
    Kevin Müller

    Kurzgesagt: talks about _strange_ things Everybody in comments: *MEMES*

    5 giorni fa
  • Logan Browne
    Logan Browne

    Question, is it actually green

    5 giorni fa
  • Supertrain12

    Literally *_EVERYTHING_***: *exists* Strangets: It's free real estate.

    5 giorni fa
  • See U Later
    See U Later

    So basically Strange matter is a cancer sick at microscopic level 😈

    5 giorni fa
  • Oz Channel
    Oz Channel

    So we were gearing a black hole hitting us and consuming us, but we had zero idea a flying stranglet drop can turn us into another matter that also kills us, clap clap.

    6 giorni fa
  • Songbird

    2:07 called quacks He didn’t said that but he could have

    6 giorni fa
  • Chinchilla Warrior
    Chinchilla Warrior

    I really like how you animated birds instead of humans. they're so cute!!

    6 giorni fa
  • Emmanuel Anthony
    Emmanuel Anthony

    Nice! I subscribed this is so good

    6 giorni fa
  • Leandro Bonfim
    Leandro Bonfim

    imagine super advanced alien civilizations using strangelets to purge entire solar systems, that is mind blowing.

    6 giorni fa
  • Shayne O'Neill
    Shayne O'Neill

    Its the false vaccum thing that keeps me up at night. Strangelets are a spooky concept, but probably not a thing, or it would have wrecked us by now. But the vaccum energy of the universe is fundamental, and with a bit of math you can plot out ways of breaking it, as implausibly difficult as it would be. And thats not "weird shit eats a star", thats "nothingness eats a universe"

    6 giorni fa
  • Zakaria Zishan
    Zakaria Zishan

    Comment section *talking about science* : We don't do that here.

    6 giorni fa
  • Army Kookie
    Army Kookie

    4:12 soo bedrock?

    6 giorni fa
  • Jackson Boulton
    Jackson Boulton

    Mabey strange matter is uranium

    6 giorni fa
  • XxnoobslayerxX Oof
    XxnoobslayerxX Oof

    Universe: exists Stranglets: I’m about to end this whole mans career

    6 giorni fa
  • TotalRookie_LV

    So, it's sort of prions of a stellar size - not alive, but infectious.

    7 giorni fa
  • Hollyleaf Gaming
    Hollyleaf Gaming

    Normal ducks: Quack quack Kurzgesagt: Quark quark

    7 giorni fa
  • PatrickASMR Mukbang
    PatrickASMR Mukbang

    Am I the only one who finds this serious?

    7 giorni fa
  • Lee Shaw
    Lee Shaw

    stranger things is starting to make sense now

    7 giorni fa
  • dinozaur pickupline
    dinozaur pickupline

    Hello to a stranglet passing by

    7 giorni fa
  • Сабай Сабаич
    Сабай Сабаич

    If the strange matter so stable why it would disappear after the big bang?

    7 giorni fa
  • Choxolet yo
    Choxolet yo

    *throws srange matter into black hole Captain: why is the black hole turning green and why do I hear boss music?

    7 giorni fa