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.

    • 460p2

      feeling cute today... might start ww3 later... no biggie

    • 460p2

      hmmm... a tungsten bullet in a railgun might work but the atmosphere is going to f up my trayectory...

    • 460p2

      Hmm... how much powder does it take to shoot a bullet into space and how do I calculate the trajectory of the bullet in correlation to a satellite...

    • Dragon Dorado
      Dragon Dorado

      Please do one on baby formula

  • Christian Daniels
    Christian Daniels

    please make a video on psychedelics

  • Michael Ginch
    Michael Ginch

    What if a stranglet was to strike a true Vacuum?

  • Pohatu Nuva
    Pohatu Nuva

    What if this is actually what Spiral Power was?

  • Andrew Ghoul
    Andrew Ghoul

    You should make a video explaining article 13 (now 15 and 17) Pls give this video a like so they can see it

  • Sergio Corona Palazuelos
    Sergio Corona Palazuelos

    7:15 I think at this point the vid can serve for a good YTP

  • 센

    고마워요. 덕분에 머리가 더 복잡해졌어요.......

  • Atif Rehman
    Atif Rehman

    You know I would not mind a few ads on ur videos... keep the quality same and boost ur revenue..👍

  • Murad TV
    Murad TV

    Vietnamese ??

  • Vytenis R
    Vytenis R

    Can you make a video about dimensions?

  • Florian Gallus
    Florian Gallus

    That feel when only the voice of kurzgesagt can give you some kind of solace

  • Zoly Eke
    Zoly Eke

    Hello Kurzgesagt! What do you think about the placebo effect? Are you planning on doing a video on this?

  • Ross Carman
    Ross Carman

    Oh shit, so this is basically just grey matter, right? (Only this could be real)

  • SubscribeToPewdiepie

    Black holes could be made out of strange matter...

  • Antton Adarraga
    Antton Adarraga

    If strangelets could've been around since the begining there must be a way for them to decay back to regular matter otherwise a big chunk of the universe would already be strange matter.

  • Mckenzie Welsh
    Mckenzie Welsh

    We could be already infected

  • Taylor PNG
    Taylor PNG

    Please do video about clouds

  • vectropolis -
    vectropolis -

    kurzgesagt: it may be the densest and strongest matter in the universe me: ever heard of extra sticky scotch tape double sided?

  • vectropolis -
    vectropolis -

    Dr. Strange uses this everyday

  • Captain Plague
    Captain Plague

    So which plant is this in the new plants vs zombies?

  • [] Red Eye []
    [] Red Eye []

    whats funny than this? Kurzgesagt : how to destory earth with a paper pin

  • Anurag Beck
    Anurag Beck

    So many wats the universe can kill us and here we are still alive.

  • NST

    I come from Vietnam but This video doesn't have Vietnamese subtitle :(( I can't understand at all. Can you make subtitle for it ❤

    • NST

      +vectropolis - I know, but I can't understand the content of this video :(( I am not good enough to translate it into Vietnamese

    • vectropolis -
      vectropolis -

      you speak english......

  • SantasSpy

    The scariest video on VN-my “Yeah is the world could be consumed by a tiny particle hitting it at any moment and there’s no way to see it coming” “Yeah but there’s not many of these particles are there?” “Oh no theres heaps”

  • Jaqen H'ghar
    Jaqen H'ghar

    Where do I read about strange matter??? The pdfs in the link aren't working for me...

  • Scrubius Maximus
    Scrubius Maximus

    is it just me or rick be using that stuff for portals

  • Sath Town
    Sath Town

    5:52 Trump bird?

  • Galactic 8
    Galactic 8

    Creepy but amazing

  • Lief Theorine
    Lief Theorine

    I love that intro, Kurzgesagt team! Kreu? I should be a patron soon, and thanks for doing the work of Lightbringer

  • agamemnom

    the animation style and the narrator always reminds me of the hitchhikers guide to the galaxy when they are accessing the actual hitchhikers guide to the galaxy in the film ;)

  • Ishnoor Babra
    Ishnoor Babra

    Doesn’t strange quark decay too then???

  • Clint Benson
    Clint Benson

    How is this not a thing in SciFi?!!! Is this what the red matter from that Star Trek movie is?

  • Nas Zre
    Nas Zre

    Stramge matter will be found in parrol universe

  • panos fotakidis
    panos fotakidis

    I would love to see you create a video about Full Dive Alternative could that be useful to science, education, entertainment, and many things in general. Can our technology currently support such an idea, or not? PLEASE MAKE ONE. I would be fascinated to see.

  • brawni83

    just build a wall. We'll be fine.

  • Fray__Bond

    Kurzgesagt: says literally anything My mind: blown

  • IncomingGhost

    This music made the subject topic even more ominous, really spooky

  • Frilled Dilo
    Frilled Dilo

    welp, I'm traumatized

  • Harvey Anderson
    Harvey Anderson

    Could we change the sun to new one

  • Ultra noob doge NOOB
    Ultra noob doge NOOB


  • Sachin Godishela
    Sachin Godishela

    2019 ?

  • Jamie Mayes
    Jamie Mayes

    My brain hurts

  • 10alijo

    Please do videos about education and classroom Language....

  • Ehtisham mushtaq
    Ehtisham mushtaq

    That was almost twice the syllabus of a whole college semester.

  • Celanis

    Ah, more existential dread. Thanks for having me covered. Exurb1a hadn't posted in a while..

  • Aryan Das
    Aryan Das

    Amazing and cool concept

  • DeaDDoG//

    Plz do about the most likely thing to kill all humans

  • Untungtandy Gaming
    Untungtandy Gaming

    Where sub indo

  • Eron ABCJ
    Eron ABCJ

    Giant gamma rays, strangelets... it seems the universe is very passionate about destroying itself and us

  • The26

    Can strange matter decay into regular matter?

  • Doğan Kürşat Aktaş
    Doğan Kürşat Aktaş

    In every single video of theirs, Kurzgesagt contributes to SCP.


    so wait if it turns everything it touches into strange matter (supposedly) then the crust or the mantle of the neutron star change into strange matter too?

  • Iam awaterbottle
    Iam awaterbottle

    My lecturer showed the video on tech taking over labour, was very cool that I saw it on the big lecture screen instead of on my phone usually

  • Rutvik Chaudhari
    Rutvik Chaudhari

    Plz remove subtitles 😑😑

  • Super Loops
    Super Loops

    except because all the stuff about strangelets being super common and flying about the universe making other stars go strange doesnt seem to be happening does it. bcus we've never seen even one strange star.

  • X Force
    X Force

    Put on headset for better experience

  • Chickknight Greenleaf
    Chickknight Greenleaf

    the universe very own Nanobot Apocalypse

  • R2OTR Team
    R2OTR Team

    why do I hear hidden quacks

  • Peppe Ddu
    Peppe Ddu

    So, if the Large Hadron Collider creates a strangelet by accident we're all screwed.

  • abhishek menon
    abhishek menon

    Please tell me how you prepare the script.

  • charmaine poynter
    charmaine poynter

    favourite youtube channel:)

  • Daneil Labro
    Daneil Labro

    Omg i just discover a new deadly thing in the univerese: T-Series

  • Milly

    Beautiful animation, every video is designed so incredibly well. We appreciate all the time and effort put into these videos, it pays off. Also the narrator could definitely be the new David Attenborough. Keep up the brilliant work

  • Arya Mahardika
    Arya Mahardika

    Hi kurzgesagt! I really love all of your video! Really interesting! But i hard understand it because of my bad listening and reading in english, can you make it better by adding Indonesia caption/subtitle? I will be love it so much to watch it everytime:)

  • Abishek Soundararajan
    Abishek Soundararajan

    Please Make a video on Earth 2.0 - Kepler 452b.

  • Grapes Gorilla
    Grapes Gorilla

    What's the 100th video going to be on, I wonder!

  • Nathaniel Lewis
    Nathaniel Lewis

    Ice-9 anyone?

  • Agung Guritno
    Agung Guritno

    No Indonesia subtitle : (

  • Reason2 Craft
    Reason2 Craft

    I love the art style and the birds, make the videos more entertaining and more enjoyable

  • WastedPotential

    Can you do heisenbergs uncertainty principle?

  • Oliver Harvey
    Oliver Harvey

    Hello u guys are my favourite content creators!, and I am really interested in science!, specifically the immune system!, Just asking, but may you please do more Videos about viruses and the immune system! Thank you for reading my comment (I’m just asking u don’t have to 😁) You guys fill information into my head!!!!! Every time I watch your videos!!!

  • R.r. Theninja
    R.r. Theninja

    It seems unlikely that the principles discussed here would come to bear, seeing as the universe tends towards disorder and expansion.

  • Caden Monterosso
    Caden Monterosso

    Who would win Thanos Shaggy at %100 power Duolingo bird Strange matter

    • [] Red Eye []
      [] Red Eye []

      broooo you forgot Big chungus

    • Kevin Von Zarovitch
      Kevin Von Zarovitch

      Shaggy; his power is maximum.

  • Sonica The hedgehog
    Sonica The hedgehog

    Except, as you said, THEORETICALLY speaking, Strange matter could convert everything else into more strange matter, BUT, no one knows.

  • Ravi Rajyaguru
    Ravi Rajyaguru

    Who would win? A purple mad titan with infinity stones OR One strange boi

    • WzW351 Gaming
      WzW351 Gaming

      One greenie boi

  • Preston Crespo
    Preston Crespo

    What was your best part kurzgesagt

  • Lori BE
    Lori BE


  • Nat Comeau
    Nat Comeau

    What a great video!! You lost me with the Kessler Syndrome video a while back but this definitely brought me back. What a great way of exploring a new branch of physics and finding something that looks entirely plausible in our universe! Edit: Kessler not Kepler

    • Nat Comeau
      Nat Comeau

      +Roberta ROBERTO You're right, thanks!

    • Roberta ROBERTO
      Roberta ROBERTO

      Nat Comeau kessler maybe?

  • Ahmad Yehia
    Ahmad Yehia

    Neutron stars are the densest things that are not *U R M O M*


    So if a strangelet hit a star what you would get is a perfectly stable perfectly stable dense indestructible star that gives of very dim light. So in other words and infinite (but weak) energy source.

  • Lil Zally
    Lil Zally

    That sounds fun.

  • Gaurav Sharma
    Gaurav Sharma

    Worst channel name ever. Impossible to search for it everytime.

  • Carlos Sanchez
    Carlos Sanchez

    Sounds like science fiction

  • Kyle Letourneau
    Kyle Letourneau

    I have so many questions, why would strange quarks only exist inside of neutron stars if they convert everything they touch? Wouldn't they convert the outside too? why aren't we observing stars wink out all the time if this is a real threat and they've existed since the birth of the universe? why hasn't it happened to us yet? how could we possibly know of all of these qualities of strange matter if its never been observed? how can we tell it even exists?

  • Raging Inferno
    Raging Inferno

    I know a Doctor who could help with Strange matter Dr. Strange

    • NippleMan

      Oh fuck this was good

  • Anjali Farkase
    Anjali Farkase

    Black dwarfs.

  • Son Bach
    Son Bach

    No Vietsub???

  • Flaze07

    I c ducks

  • Liszt Franz
    Liszt Franz


  • John Tobin
    John Tobin

    wouldnt they just eat until they get the mass of a black hole...

  • syah fadzli
    syah fadzli

    how could human understand something that may or may not happens in billion years?

  • _KarmA_

    How can a human being become immortal? New vid

  • Wan Asyraf
    Wan Asyraf

    Exotic matter sounds like tiberium in command and conquer tiberium war. It engulf living and non-living things to form tiberium based organism

  • Just some random guy
    Just some random guy

    I got an idea. You can probably talk about how Apophis will destroy the earth if it ever hits the earth.

  • Maxi Comics
    Maxi Comics

    Keeping its’s size or so massive turn into a black hole!?.

  • Maxi Comics
    Maxi Comics

    Wait nuetron stars are ways denser than our sun so wouldn’t it have more mass?!.

  • Wildvine05

    2:40 All other quarks(including strange quarks) seem to decay away quickly. 4:05 Strange matter(which is made of strange quarks) is perfectly stable. Lol look at this perfect logic.

    • SWasp

      So true

  • Ihsan Jaya
    Ihsan Jaya

    Please Add Indonesian Subtitles i can't understand if i don't read in Indonesian...

  • 박진우

    Too ezy to udstand

  • vebriyan pasha
    vebriyan pasha

    My day was fine until I watch this video.

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