Welding in Space

  • Опубликовано:  11 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: 1 562

  • purgruv
    purgruv 21 час назад

    In space no one can hear you weld.

  • Jayk0b
    Jayk0b 23 часа назад

    When someone welding behind you, STILL WEAR THIS MASK.... jesus.... just its behind you doesnt mean it cant damage your retina.

  • rabbitphobia
    rabbitphobia 2 дня назад

    You think someone would have told him he is pronouncing "Gemini" wrong well you would think he would have known but anyway...

  • Dave wallace
    Dave wallace 5 дней назад

    Obviously you can't weld in space, there's no earth ;)

  • retnikt
    retnikt 8 дней назад

    I read this as "Wedding in Space"

  • Mark Smith
    Mark Smith 9 дней назад

    You do not have melt metals to weld them it is just the easiest way to join large complicated pieces of metals- pressure does it too also brazing works- low temperature. Your ignorance of weld engineering is a lot.

  • Jagjit Roudh
    Jagjit Roudh 10 дней назад

    I likes your name I do.

  • Pr
    Pr 11 дней назад

    What was exactly "cold welded". Hinge? If so then what was play/tolerance of moving parts in room temperature? As far as I know in space You get much below zero, -100 degrees Celsius. In such temperature things change dimension, so hinges might stick.

  • Luke Satcher
    Luke Satcher 12 дней назад

    made this video as an excuse to eat a payday?

  • DKO o
    DKO o 13 дней назад

    You should cover up them arms bra..

  • nabbster94
    nabbster94 15 дней назад

    wth, how will this do inside space suits?

  • Chernobyl
    Chernobyl 16 дней назад


  • ardvark84
    ardvark84 16 дней назад

    As a welder I can say that cold welding is for pussies;) You've got to heat things up to do it properly.

  • C2.CaitoMXD
    C2.CaitoMXD 16 дней назад

    it's like a magnetic cold space welding.

  • Vidit Katlana
    Vidit Katlana 17 дней назад

    So metal kinda behave like liquids ?

  • AppyDroid Development
    AppyDroid Development 18 дней назад

    The Earth is Flat. Space missions were fake...

  • Some Rabbit
    Some Rabbit 21 день назад

    Van der Waal's force. Google it.

  • Count Spatula
    Count Spatula 26 дней назад

    I honestly wouldn't be surprised if this guy actually got to go to space to weld something

  • David Schmidt
    David Schmidt 29 дней назад

    damn, those candy bars made me hungry, and I usually don't even eat candy...

  • Ashish Mishra
    Ashish Mishra Месяц назад

    I thought he is going to space

  • SovietHotPocket
    SovietHotPocket Месяц назад

    actually they didnt have to bring ed white back in they accidently lost contact with ground control which is why they said we've been trying to get a hold of you for a while

  • Ronit Muduli
    Ronit Muduli Месяц назад

    Candy bars for describing space phenomenon ?
    You, sir have earned all the respect I could ever give.

  • Kevin Lind
    Kevin Lind Месяц назад

    Veritasium, making a video about coldfusion.
    I wonder when Coldfusion will make a video about veritasium...
    Heh. heh. heh...

  • Steve Rose
    Steve Rose Месяц назад

    Impossible ..........there's no earth in space :P

  • funkmachines
    funkmachines Месяц назад

    I literally can't stand caramel and got sick because of that bar. My sad life.

  • Dan Sneyd
    Dan Sneyd 2 месяца 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

    • Chris Sachjen
      Chris Sachjen 7 дней назад

      They wouldn't have that kind of electrical current to waste.

  • JoseitoEdlVodao
    JoseitoEdlVodao 2 месяца назад

    And I thought oxide was the bane of all metal.

  • MultiGazman
    MultiGazman 2 месяца назад

    Stupid video!

  • jane mark
    jane mark 2 месяца назад

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

  • RaptoJP
    RaptoJP 2 месяца назад

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

  • The Gaming Robot
    The Gaming Robot 2 месяца назад

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

  • Kerry C
    Kerry C 2 месяца назад

    Tail? Tale! Good video

  • Braadkuiken
    Braadkuiken 2 месяца назад

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

  • shape shifter
    shape shifter 2 месяца назад

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

  • ocelot48gaming
    ocelot48gaming 2 месяца 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 3 месяца назад

    welp now i want chocolate covered peanut bar

  • Jin H
    Jin H 3 месяца назад

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

  • Bruce Werlhof
    Bruce Werlhof 3 месяца назад

    English captions are bad for this video please fix

  • Uwera Tryb
    Uwera Tryb 3 месяца назад

    who else saw wedding in space

  • Yuriy K
    Yuriy K 3 месяца назад

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

  • AS. I see The World
    AS. I see The World 3 месяца назад

    Man has never been to the moon !!

  • Fransella Blasco
    Fransella Blasco 4 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 4 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 4 месяца назад

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

  • Mwongera Mwarania
    Mwongera Mwarania 4 месяца назад

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

  • re frigerator
    re frigerator 4 месяца назад

    so hes saying you cant fuse caramel with toffee nut?

  • re frigerator
    re frigerator 4 месяца назад

    thats how you get ants

  • Tony Cavazos
    Tony Cavazos 4 месяца назад

    now i want a payday candy bar

  • Anarama
    Anarama 4 месяца назад

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

  • Bill Gates
    Bill Gates 4 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 4 месяца назад

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

  • Anik Kundu
    Anik Kundu 4 месяца назад

    I feel hungry

  • joespeed1952
    joespeed1952 4 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 4 месяца назад

    Gage blocks

  • taylor tenley
    taylor tenley 4 месяца назад

    Linex it

  • eboomer84
    eboomer84 4 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 4 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 4 месяца назад

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

  • dows555 khan
    dows555 khan 4 месяца назад

    i read the title weddug in space. lol

  • Jonathan & Ashley Vasquez
    Jonathan & Ashley Vasquez 4 месяца назад

    this is false... you know nothing about metallurgy

  • Harshit Tewari
    Harshit Tewari 4 месяца назад +1


  • Carver
    Carver 4 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 4 месяца назад +1

    Sponsored by payday

  • Ernest Workman
    Ernest Workman 4 месяца назад

    Arrghhh! I got arc eye from watching it!

  • Touwtje
    Touwtje 4 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 5 месяцев 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 5 месяцев 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 5 месяцев назад

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

  • junoguten
    junoguten 5 месяцев 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 5 месяцев назад

    i want that candy bar

  • BlueHawks
    BlueHawks 5 месяцев назад

    Finally som1 Elise who appreciates payday bars

  • jholotan best
    jholotan best 5 месяцев назад

    how does the gold welding in the atmosphere

  • nonya damnbus#1
    nonya damnbus#1 5 месяцев назад

    Dammit now I want a payday bar.

  • Harsh Gupta
    Harsh Gupta 5 месяцев назад

    i don't understand who dislikes videos like this

  • blackcatooow
    blackcatooow 6 месяцев назад

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

  • alfalfa fonzo
    alfalfa fonzo 6 месяцев назад +1

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

  • Based God
    Based God 6 месяцев назад

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

  • Golden Grenadier
    Golden Grenadier 6 месяцев назад

    I bet soldering is easy in space.

  • Dan Crouch
    Dan Crouch 6 месяцев назад

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

  • T.P.K.
    T.P.K. 6 месяцев 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 6 месяцев назад

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

    WOFGH 6 месяцев назад


  • Eagles_Eye
    Eagles_Eye 6 месяцев назад

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

  • Tadesan
    Tadesan 6 месяцев 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 6 месяцев назад


  • Cameron Wofford
    Cameron Wofford 6 месяцев назад

    1 payday + 1 payday = SUPER PAYDAY

  • 777Dubliner
    777Dubliner 6 месяцев 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 6 месяцев назад

    Are cold welds weaker than heated welds?

  • Kainafar
    Kainafar 6 месяцев 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 7 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 7 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

  • Mel Rue
    Mel Rue 7 месяцев назад

    Footage is stop motion smh

  • Brian Kelly
    Brian Kelly 7 месяцев назад

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

  • bdub z
    bdub z 7 месяцев назад

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

  • tjrsasea
    tjrsasea 7 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 7 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 8 месяцев назад

    Is it just me or do I want that nut bar

  • Matthew Linn
    Matthew Linn 8 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 8 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 8 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.