Welding in Space

  • Опубликовано:  9 месяцев назад
  • In space, metals can weld together without heat or melting.
    Check out Audible: bit.ly/AudibleVe
    Support Veritasium on Patreon: bit.ly/VePatreon

    Written by Joh Howes and Derek Muller

    Yes, it's pronounced Gemini (ee not eye) because that's the way everyone pronounced this mission.

    Thanks to Patreon supporters:
    Bryan Baker, Donal Botkin, Tony Fadell, Saeed Alghamdi

    Gemini IV transcripts: www.jsc.nasa.gov/history/mission_trans/gemini4.htm

    Gemini IV recordings:
    archive.org/details/Gemini4 (relevant clip is 1297 at about 2:00)

    ESA cold welding recommendations:

    Cold welding gold nanowire:

    Music by Kevin MacLeod "Intrepid" www.incompetech.com
  • ОбразованиеОбразование
  • Длительность: 6:53
  • veritasium  cold welding  welding  space  gemini iv  gemini  gemini 4  galileo  spacecraft  international space station  iss  weld  metal  structure  ions  alloys  esa  fuse  metals  sea of electrons  lattice  crystal  

Комментарии: 1 529

  • Dan Sneyd
    Dan Sneyd 3 дня назад

    Do they ever hot weld in space? No need for any shielding gases. Probably still a bit risky. Melting holes in your space suit wouldn't be fun

  • JoseitoEdlVodao
    JoseitoEdlVodao 6 дней назад

    And I thought oxide was the bane of all metal.

  • MultiGazman
    MultiGazman 15 дней назад

    Stupid video!

  • jane mark
    jane mark 17 дней назад

    사기꾼 겁나 사기 잘 치네... 금속을 땅콩바에 비하냐... 게다가 냉간용접 있지도 않았다며... 대중을 참으로 잘도 기만하네... 본적도 없는걸 본것 처럼 이야기하네...

  • RaptoJP
    RaptoJP 17 дней назад

    For some reason, at 4:44 I felt like you were giving us 3 tips on how to build spaceships with proper materials.

  • MonsterCar(YT)
    MonsterCar(YT) 23 дня назад

    Man this channel is really cool it's good for kids like me

  • Kerry C
    Kerry C 23 дня назад

    Tail? Tale! Good video

  • Braadkuiken
    Braadkuiken 26 дней назад

    I mean, it makes complete sense that this happens, if you look at it at atom level

  • shape shifter
    shape shifter 26 дней назад

    This must be comedy, this first guy is clearly not in space. In fact I believe space travel is a lie.

  • ocelot48gaming
    ocelot48gaming 29 дней назад

    I wonder if it is so hard technically to create a line of production in automotive to weld parts together with this method?..

  • GDSlimed
    GDSlimed Месяц назад

    welp now i want chocolate covered peanut bar

  • Jin H
    Jin H Месяц назад

    this is a B.S. channel.
    I hope people dont buy this lie

  • Bruce Werlhof
    Bruce Werlhof Месяц назад

    English captions are bad for this video please fix

  • Uwera Tryb
    Uwera Tryb Месяц назад

    who else saw wedding in space

  • Yuriy K
    Yuriy K Месяц назад

    very interesting! but you gotta work on your visualization man (no eating while talking)

  • A.S. the world Doesn't turn
    A.S. the world Doesn't turn 2 месяца назад

    Man has never been to the moon !!

  • Fransella Blasco
    Fransella Blasco 2 месяца назад

    Why is he not my professor in my college? He always finds an interesting way to explain anything and everything to you ! If he gave my mi organic chemestry, my advance calculus and physics courses I would have been a very happy student 😂 much love ✌️

  • JH Wong
    JH Wong 2 месяца назад

    Great video, thanks! Explained to me why we can't just stick two pieces of metal together without external forces since they are only hold in place by the "sea of electrons"

  • Gaydolf Hitler
    Gaydolf Hitler 2 месяца назад

    so to weld in space you need windex and a scrubber?

  • Mwongera Mwarania
    Mwongera Mwarania 2 месяца назад

    Welding is not afterall for greasy dirty and poorly educated Red necks 🤣

  • re frigerator
    re frigerator 2 месяца назад

    so hes saying you cant fuse caramel with toffee nut?

  • re frigerator
    re frigerator 2 месяца назад

    thats how you get ants

  • Tony Cavazos
    Tony Cavazos 2 месяца назад

    now i want a payday candy bar

  • Anarama
    Anarama 2 месяца назад

    oh no the robots cant have sex now. theyl get cold welded together in space

  • Bill Gates
    Bill Gates 2 месяца назад

    Put a coating on metal that make the surface really rigged so they can't combine because there is a coating to prevent that from happening

  • Gary Mike
    Gary Mike 2 месяца назад

    I remember learning this in Welding class. Its supprising that most welders don't know this.

  • Anik Kundu
    Anik Kundu 2 месяца назад

    I feel hungry

  • joespeed1952
    joespeed1952 2 месяца назад

    Geminy? How about Gem-In-Eye? Like seriously from all the people whose zodiac sign is Gemini, that kinda upsets me.

  • Chris Baer
    Chris Baer 2 месяца назад

    Gage blocks

  • taylor tenley
    taylor tenley 2 месяца назад

    Linex it

  • eboomer84
    eboomer84 2 месяца назад

    This is something all mechanical engineers encounter, in a vacuum or not - we call it "galling" (adhesive wear). Aluminum and stainless steel really tend to do it.

  • bluefmi
    bluefmi 2 месяца назад

    "thermal shock as the satelite passed from HOT to cold areas" pressure can fuse items together. no need for vacuum (and high pressure produces heat). but i agree, clean surfaces will help the fusing

    "jammed momentarily" does "momentarily" sound like "small adherence" or like "fusing" to you?

    you shoud actually read carefully what you present. heat was clearly presented in the paper.

  • Anon Gloria
    Anon Gloria 2 месяца назад

    Is it me or is this guy the hottest scientist there is?

  • dows555 khan
    dows555 khan 2 месяца назад

    i read the title weddug in space. lol

  • Jonathan & Ashley Vasquez
    Jonathan & Ashley Vasquez 2 месяца назад

    this is false... you know nothing about metallurgy

  • Harshit Tewari
    Harshit Tewari 2 месяца назад +1


  • Carver
    Carver 2 месяца назад

    You say you dislike ads, but then you make yourself the ad at the end of the video. Also Audible gives everyone a 30 day free trial, so this isn't a deal at all. Boooo.

  • Dane Madsen
    Dane Madsen 2 месяца назад +1

    Sponsored by payday

  • Ernest Workman
    Ernest Workman 2 месяца назад

    Arrghhh! I got arc eye from watching it!

  • Touwtje
    Touwtje 2 месяца назад

    Interesting.. but you did not tell us how they actually weld in space? Does it work to just use a 'normal' welder or?

  • Seán O'Nilbud
    Seán O'Nilbud 3 месяца назад

    It's Gemini not Jiminy, if a bunch of illiterate muricans can't speak properly it's rude to make fun of them by repeating their hillbilly barbarian error.

  • Jørund Eldøy
    Jørund Eldøy 3 месяца назад

    So next time we want to weld a metal chair together but we don't have a welding tool, we just use millions of dollars to send it up to space?

  • Accrsd
    Accrsd 3 месяца назад

    see now this just makes cold welding should be used to construct spacecraft in space...

  • junoguten
    junoguten 3 месяца назад

    Will cold welding really connect that strongly though? I mean I don't imagine most flat things us humans manufacture are really that flat on an atomic scale?

  • Ausintune
    Ausintune 3 месяца назад

    i want that candy bar

  • BlueHawks
    BlueHawks 3 месяца назад

    Finally som1 Elise who appreciates payday bars

  • jholotan best
    jholotan best 3 месяца назад

    how does the gold welding in the atmosphere

  • nonya damnbus#1
    nonya damnbus#1 3 месяца назад

    Dammit now I want a payday bar.

  • Harsh Gupta
    Harsh Gupta 3 месяца назад

    i don't understand who dislikes videos like this

  • blackcatooow
    blackcatooow 4 месяца назад

    Get a camera with optical image stabilization. Your camera makes me dizzy

  • alfalfa fonzo
    alfalfa fonzo 4 месяца назад +1

    4:20 who else hears a cockroach making its way to you from under the floor?

  • Based God
    Based God 4 месяца назад

    if the space story had nothing to do with cold welding why even mention it?

  • Golden Grenadier
    Golden Grenadier 4 месяца назад

    I bet soldering is easy in space.

  • Dan Crouch
    Dan Crouch 4 месяца назад

    do you need any shielding gas in space with there being no air.

  • T.P.K.
    T.P.K. 4 месяца назад

    yeah they slather grease on everything to mitigate any chance of stickage. The bigger the glob the better the job.

  • Matthew Topp
    Matthew Topp 4 месяца назад

    I wonder how well a custom truck bumper wold hold up if you cold welded

    WOFGH 4 месяца назад


  • Eagles_Eye
    Eagles_Eye 4 месяца назад

    .. i tought it was about welding in space... dissapointmentttssss

  • Tadesan
    Tadesan 4 месяца назад

    Why are you (and most other channels) asking for financial support? If making these videos is such a burden then stop making them.

  • Nicolas Gleason-Boure
    Nicolas Gleason-Boure 4 месяца назад


  • Cameron Wofford
    Cameron Wofford 4 месяца назад

    1 payday + 1 payday = SUPER PAYDAY

  • 777Dubliner
    777Dubliner 4 месяца назад

    stainless steel loves to cold weld, I was assembling a part when I was new to the machine shop Im at and wasnt told about applying anti freeze, the bolt went in but I had to take them out because I forgot a part to put on and one locked right up, that was my first and this far only experience with it, lesson learned

  • Noah Williams
    Noah Williams 4 месяца назад

    Are cold welds weaker than heated welds?

  • Kainafar
    Kainafar 4 месяца назад

    If something is sufficiently flat, it will "cold weld" in the earths atmosphere. High quality gauge blocks will do this.

  • abc def
    abc def 5 месяцев назад

    cold welding shouldnt take place, all the youtube videos i saw, they were pressure weldings or friction weldings or electrical potential weldings, including this video. they seem to insert the external energy into the system of metals, this is a cheating.

    because when an electron tries to leave the metal, an image charge appears in the metal, and the metal sucks back the electron into the metal. in other words, a work must be done on the system to eject the electron. please check E&M 101.

    Feymann was wrong, or he probably meant the nano meter sized metal where QM dominates. the nano size is not in the region of the classical realms of physics.

  • superslash946
    superslash946 5 месяцев назад

    Man, you truly are an inspiration. Your videos are by far the coolest educative vids out there! Just wanted to tell you I just finished a university paper on cold welding inspired/based on this video! Thanks for the help! xD

  • me larrieu
    me larrieu 5 месяцев назад

    Footage is stop motion smh

  • Brian Kelly
    Brian Kelly 5 месяцев назад

    Chocolate covered Payday bar. Finally science has made practical advances!!!

  • bdub z
    bdub z 5 месяцев назад

    he's never gonna forget gloves again if he touches that filler with the torch lol, especially on ac

  • tjrsasea
    tjrsasea 5 месяцев назад +1

    Hey guys! Support my photobook about Space titled Ethereal that will literally bring you out of this world on Kickstarter www.kickstarter.com/projects/1726456725/ethereal-literally-out-of-this-world The campaign is ending very soon! Thank you! :)

  • Peter - John Jones
    Peter - John Jones 5 месяцев назад

    ive clicked on this vid because the caption actually made me laugh due to my (low) understanding of welding aha

  • Nicholas Rapacciuolo
    Nicholas Rapacciuolo 6 месяцев назад

    Is it just me or do I want that nut bar

  • Matthew Linn
    Matthew Linn 6 месяцев назад

    You talk like cold welding cannot happen on earth in normal atmosphere. It happens a lot that is why we have to use antiseize some of the times.( I know that is not the main purpose of antiseize.)

  • Huemid
    Huemid 6 месяцев назад

    The footage of Gemini looks like stop motion, was it a recreation of what happened or is the video sped up?

  • MyParkour121
    MyParkour121 6 месяцев назад

    "You have to heat them past their melting point" - ever heard of forge welding ? the temperatures are close to melting but still more than 100°C (Sorry I don't know the Fahrenheit scale) lower than melting.
    please correct me if I'm wrong, it may be that with the plastic deformation of the steel the temperature at the welding surface rises above the melting point, but that I doubt. So as far as I know you can indeed weld steel without melting it.

  • cryo phile
    cryo phile 6 месяцев назад


  • Protein Strands
    Protein Strands 6 месяцев назад

    this is incredible

  • daft nord
    daft nord 6 месяцев назад

    i just slightly cold welded two hard drive platters together. highly polished things can do it in earth atomsphere

  • Teodor Foca
    Teodor Foca 6 месяцев назад


  • Ivan Quaglia
    Ivan Quaglia 6 месяцев назад


    GRD PROJEKT 6 месяцев назад

    0:06 Science is about to hap.. hang on, different channel

  • King of Cannabis
    King of Cannabis 6 месяцев назад

    I wonder if Juno's jammed up fuel valve may have cold welded.

  • 10DBott
    10DBott 6 месяцев назад

    cold welding seems to be the same as forge welding just without the heat and flux to keep the oxygen off

  • Devesh Dadhich
    Devesh Dadhich 7 месяцев назад

    "Manufacture Nanotechnology" Really? Did you mean manufacturing nanomaterials?

  • Anubhav Yadav
    Anubhav Yadav 7 месяцев назад

    best example of candy bar dude

  • Rylan Delap
    Rylan Delap 7 месяцев назад

    why wouldn't the same materials that aren't metal still cold weld when rubbed together in space?

  • Scott Hannan
    Scott Hannan 7 месяцев назад

    This really gave our astronauts a chance to test their metal/mettle.

  • Justin Murtagh
    Justin Murtagh 7 месяцев назад

    Wow, Americans pronounce "Gemini" like that? Sounds so weird to me :).

  • The Sqoou
    The Sqoou 7 месяцев назад

    Is cold welding synonymous with cold fusion ¿

  • firecrow 797
    firecrow 797 7 месяцев назад

    payday is my favorite candy bar

  • Slizarus
    Slizarus 7 месяцев назад

    I wonder if Kerbals know to coat their metals.

  • Memawandpatrick
    Memawandpatrick 7 месяцев назад

    Tfal then?

  • Kenneth Fung
    Kenneth Fung 7 месяцев назад

    do the crystal structure of metal needed to be the same?

  • ThePilotPenguin
    ThePilotPenguin 7 месяцев назад +1

    Remember to put on your welding mask at 0:09

  • Ian Robinson
    Ian Robinson 8 месяцев назад

    man i love your channel. Thanks for this.

  • FE comando
    FE comando 8 месяцев назад

    Sooooo NASA fanboy! You have been asked to reinforce the fakery of scientism agenda! Here is how selling out will cost you a LOT in a very near future. A future where people like you are going to be disregarded and discredited so harshly I will even feel bad. If it is intentional like Vsauce, we will know, if it is because of your lack of education and ability to understand the realm we live in then you still have a small window and come around explaining why this video along with other ones are pure propaganda and does not have any tangible content.
    Time will tell

    • Tordah!
      Tordah! 4 месяца назад

      You're stupid, go back to you flat earth comedy channels and leave the grown ups alone.

  • kairon156
    kairon156 8 месяцев назад

    I never heard of cold welding before. I know on earth Tungsten usually doesn't like sticking to other metals so I wonder if that would be a good one to use on space craft.

    How big can we use cold welding? can 2 metal ingots be cold welded together? can we weld space crafts or stations using cold welding?

  • Matt Macken
    Matt Macken 8 месяцев назад

    I understand why objects of different materials or alloys won't 'cold weld', but why won't materials other than metal fuse together is space? If you have two identical pieces of plastic, what about plastic, keeps them from sticking together? Plastic is just one example, you can insert other items in it's place, but the question remains.

  • Eleazar Barrios
    Eleazar Barrios 8 месяцев назад

    Gave us those cold welding tips like were going to be using them