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!


  • Kurzgesagt – In a Nutshell

    Kurzgesagt – In a Nutshell

    Il y a 12 jours

    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


    Il y a 2 jours

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

  • 460p2


    Il y a 2 jours

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

  • 460p2


    Il y a 2 jours

    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

    Il y a 2 jours

    Please do one on baby formula

  • Christian Daniels

    Christian Daniels

    Il y a 6 heures

    please make a video on psychedelics

  • Michael Ginch

    Michael Ginch

    Il y a 7 heures

    What if a stranglet was to strike a true Vacuum?

  • Pohatu Nuva

    Pohatu Nuva

    Il y a 7 heures

    What if this is actually what Spiral Power was?

  • Andrew Ghoul

    Andrew Ghoul

    Il y a 9 heures

    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

    Il y a 9 heures

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

  • 센

    Il y a 10 heures

    고마워요. 덕분에 머리가 더 복잡해졌어요.......

  • Atif Rehman

    Atif Rehman

    Il y a 10 heures

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

  • Murad TV

    Murad TV

    Il y a 12 heures

    Vietnamese ??

  • Vytenis R

    Vytenis R

    Il y a 12 heures

    Can you make a video about dimensions?

  • Florian Gallus

    Florian Gallus

    Il y a 12 heures

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

  • Zoly Eke

    Zoly Eke

    Il y a 12 heures

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

  • Ross Carman

    Ross Carman

    Il y a 13 heures

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

  • SubscribeToPewdiepie


    Il y a 14 heures

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

  • Antton Adarraga

    Antton Adarraga

    Il y a 15 heures

    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

    Il y a 17 heures

    We could be already infected

  • Taylor PNG

    Taylor PNG

    Il y a 17 heures

    Please do video about clouds

  • vectropolis -

    vectropolis -

    Il y a 18 heures

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

  • vectropolis -

    vectropolis -

    Il y a 18 heures

    Dr. Strange uses this everyday

  • Captain Plague

    Captain Plague

    Il y a 18 heures

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

  • [] Red Eye []

    [] Red Eye []

    Il y a 18 heures

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

  • Anurag Beck

    Anurag Beck

    Il y a 19 heures

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

  • NST


    Il y a 19 heures

    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


    Il y a 9 heures

    +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 -

    Il y a 18 heures

    you speak english......

  • SantasSpy


    Il y a 19 heures

    The scariest video on FRdownload “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

    Il y a 21 heure

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

  • Scrubius Maximus

    Scrubius Maximus

    Il y a 21 heure

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

  • Sath Town

    Sath Town

    Il y a 21 heure

    5:52 Trump bird?

  • Galactic 8

    Galactic 8

    Il y a 22 heures

    Creepy but amazing

  • Lief Theorine

    Lief Theorine

    Il y a 22 heures

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

  • agamemnom


    Il y a 23 heures

    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

    Il y a jour

    Doesn’t strange quark decay too then???

  • Clint Benson

    Clint Benson

    Il y a jour

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

  • Nas Zre

    Nas Zre

    Il y a jour

    Stramge matter will be found in parrol universe

  • panos fotakidis

    panos fotakidis

    Il y a jour

    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


    Il y a jour

    just build a wall. We'll be fine.

  • Fray__Bond


    Il y a jour

    Kurzgesagt: says literally anything My mind: blown

  • IncomingGhost


    Il y a jour

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

  • Frilled Dilo

    Frilled Dilo

    Il y a jour

    welp, I'm traumatized

  • Harvey Anderson

    Harvey Anderson

    Il y a jour

    Could we change the sun to new one

  • Ultra noob doge NOOB

    Ultra noob doge NOOB

    Il y a jour


  • Sachin Godishela

    Sachin Godishela

    Il y a jour

    2019 ?

  • Jamie Mayes

    Jamie Mayes

    Il y a jour

    My brain hurts

  • 10alijo


    Il y a jour

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

  • Ehtisham mushtaq

    Ehtisham mushtaq

    Il y a jour

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

  • Celanis


    Il y a jour

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

  • Aryan Das

    Aryan Das

    Il y a jour

    Amazing and cool concept

  • DeaDDoG//


    Il y a jour

    Plz do about the most likely thing to kill all humans

  • Untungtandy Gaming

    Untungtandy Gaming

    Il y a jour

    Where sub indo

  • Eron ABCJ

    Eron ABCJ

    Il y a jour

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

  • The26


    Il y a jour

    Can strange matter decay into regular matter?

  • Doğan Kürşat Aktaş

    Doğan Kürşat Aktaş

    Il y a jour

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



    Il y a jour

    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

    Il y a jour

    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

    Il y a jour

    Plz remove subtitles 😑😑

  • Super Loops

    Super Loops

    Il y a jour

    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

    Il y a jour

    Put on headset for better experience

  • Chickknight Greenleaf

    Chickknight Greenleaf

    Il y a jour

    the universe very own Nanobot Apocalypse

  • R2OTR Team

    R2OTR Team

    Il y a jour

    why do I hear hidden quacks

  • Peppe Ddu

    Peppe Ddu

    Il y a jour

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

  • abhishek menon

    abhishek menon

    Il y a jour

    Please tell me how you prepare the script.

  • charmaine poynter

    charmaine poynter

    Il y a jour

    favourite youtube channel:)

  • Daneil Labro

    Daneil Labro

    Il y a jour

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

  • Milly


    Il y a jour

    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

    Il y a jour

    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

    Il y a jour

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

  • Grapes Gorilla

    Grapes Gorilla

    Il y a jour

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

  • Nathaniel Lewis

    Nathaniel Lewis

    Il y a jour

    Ice-9 anyone?

  • Agung Guritno

    Agung Guritno

    Il y a jour

    No Indonesia subtitle : (

  • Reason2 Craft

    Reason2 Craft

    Il y a jour

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

  • WastedPotential


    Il y a jour

    Can you do heisenbergs uncertainty principle?

  • Oliver Harvey

    Oliver Harvey

    Il y a jour

    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

    Il y a jour

    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

    Il y a jour

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

  • [] Red Eye []

    [] Red Eye []

    Il y a 18 heures

    broooo you forgot Big chungus

  • Kevin Von Zarovitch

    Kevin Von Zarovitch

    Il y a jour

    Shaggy; his power is maximum.

  • Sonica The hedgehog

    Sonica The hedgehog

    Il y a jour

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

  • Ravi Rajyaguru

    Ravi Rajyaguru

    Il y a 2 jours

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

  • WzW351 Gaming

    WzW351 Gaming

    Il y a 20 heures

    One greenie boi

  • Preston Crespo

    Preston Crespo

    Il y a 2 jours

    What was your best part kurzgesagt

  • Lori BE

    Lori BE

    Il y a 2 jours


  • Nat Comeau

    Nat Comeau

    Il y a 2 jours

    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

    Il y a 2 jours

    +Roberta ROBERTO You're right, thanks!

  • Roberta ROBERTO

    Roberta ROBERTO

    Il y a 2 jours

    Nat Comeau kessler maybe?

  • Ahmad Yehia

    Ahmad Yehia

    Il y a 2 jours

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



    Il y a 2 jours

    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

    Il y a 2 jours

    That sounds fun.

  • Gaurav Sharma

    Gaurav Sharma

    Il y a 2 jours

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

  • Carlos Sanchez

    Carlos Sanchez

    Il y a 2 jours

    Sounds like science fiction

  • Kyle Letourneau

    Kyle Letourneau

    Il y a 2 jours

    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

    Il y a 2 jours

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

  • NippleMan


    Il y a 16 heures

    Oh fuck this was good

  • Anjali Farkase

    Anjali Farkase

    Il y a 2 jours

    Black dwarfs.

  • Son Bach

    Son Bach

    Il y a 2 jours

    No Vietsub???

  • Flaze07


    Il y a 2 jours

    I c ducks

  • Liszt Franz

    Liszt Franz

    Il y a 2 jours


  • John Tobin

    John Tobin

    Il y a 2 jours

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

  • syah fadzli

    syah fadzli

    Il y a 2 jours

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

  • _KarmA_


    Il y a 2 jours

    How can a human being become immortal? New vid

  • Wan Asyraf

    Wan Asyraf

    Il y a 2 jours

    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

    Il y a 2 jours

    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

    Il y a 2 jours

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

  • Maxi Comics

    Maxi Comics

    Il y a 2 jours

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

  • Wildvine05


    Il y a 2 jours

    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


    Il y a jour

    So true

  • Ihsan Jaya

    Ihsan Jaya

    Il y a 2 jours

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

  • 박진우


    Il y a 2 jours

    Too ezy to udstand

  • vebriyan pasha

    vebriyan pasha

    Il y a 2 jours

    My day was fine until I watch this video.