Welding in Space

  • Опубликовано:  7 месяцев назад
  • In space, metals can weld together without heat or melting.
    Check out Audible: http://bit.ly/AudibleVe
    Support Veritasium on Patreon: http://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: http://www.jsc.nasa.gov/history/mission_trans/gemini4.htm

    Gemini IV recordings:
    https://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" http://www.incompetech.com
  • КатегорииОбразование
  • Длительность: 6:53
  • Тэги для этого Видео:  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: 1 476

  • Dane Madsen
    Dane Madsen 6 часов назад

    Sponsored by payday

  • Ernest Workman
    Ernest Workman 11 часов назад

    Arrghhh! I got arc eye from watching it!

  • Touwtje
    Touwtje 21 час 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 2 дня 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 дня 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 4 дня назад

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

  • junoguten
    junoguten 5 дней 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 11 дней назад

    i want that candy bar

  • BlueHawks
    BlueHawks 21 день назад

    Finally som1 Elise who appreciates payday bars

  • jholotan best
    jholotan best 23 дня назад

    how does the gold welding in the atmosphere

  • nonya damnbus#1
    nonya damnbus#1 27 дней назад

    Dammit now I want a payday bar.

  • Harsh Gupta
    Harsh Gupta 27 дней назад

    i don't understand who dislikes videos like this

  • blackcatooow
    blackcatooow 1 месяц назад

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

  • alfalfa fonzo
    alfalfa fonzo 1 месяц назад

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

  • Based God
    Based God 1 месяц назад

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

  • Golden Grenadier
    Golden Grenadier 1 месяц назад

    I bet soldering is easy in space.

  • Dan Crouch
    Dan Crouch 1 месяц назад

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

  • T.P.K.
    T.P.K. 1 месяц 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 1 месяц назад

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

    WOFGH 1 месяц назад


  • Eagles_Eye
    Eagles_Eye 1 месяц назад

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

  • Tadesan
    Tadesan 1 месяц 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 1 месяц назад


  • Cameron Wofford
    Cameron Wofford 1 месяц назад

    1 payday + 1 payday = SUPER PAYDAY

  • 777Dubliner
    777Dubliner 1 месяц 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 1 месяц назад

    Are cold welds weaker than heated welds?

  • Kainafar
    Kainafar 1 месяц 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 2 месяца 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 2 месяца 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 2 месяца назад

    Footage is stop motion smh

  • Brian Kelly
    Brian Kelly 2 месяца назад

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

  • bdub z
    bdub z 2 месяца назад

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

  • vicky meyer
    vicky meyer 2 месяца назад

    Publication chicken therapy feed flow transform function exhibition ankle.

  • tjrsasea
    tjrsasea 2 месяца назад

    Hey guys! Support my photobook about Space titled Ethereal that will literally bring you out of this world on Kickstarter https://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 3 месяца 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 3 месяца назад

    Is it just me or do I want that nut bar

  • Matthew Linn
    Matthew Linn 3 месяца 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 3 месяца назад

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

  • MyParkour121
    MyParkour121 3 месяца 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 3 месяца назад


  • Protein Strands
    Protein Strands 3 месяца назад

    this is incredible

  • daft nord
    daft nord 3 месяца назад

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

  • Teodor Foca
    Teodor Foca 3 месяца назад


  • Ivan Quaglia
    Ivan Quaglia 3 месяца назад


  • Gradha Putra
    Gradha Putra 3 месяца назад

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

  • King of Cannabis
    King of Cannabis 3 месяца назад

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

  • 10DBott
    10DBott 3 месяца 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 4 месяца назад

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

  • Anubhav Yadav
    Anubhav Yadav 4 месяца назад

    best example of candy bar dude

  • Rylan Delap
    Rylan Delap 4 месяца назад

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

  • Scott Hannan
    Scott Hannan 4 месяца назад

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

  • Justin Murtagh
    Justin Murtagh 4 месяца назад

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

  • The Sqoou
    The Sqoou 4 месяца назад

    Is cold welding synonymous with cold fusion ¿

  • firecrow 797
    firecrow 797 4 месяца назад

    payday is my favorite candy bar

  • Slizarus
    Slizarus 4 месяца назад

    I wonder if Kerbals know to coat their metals.

  • Memawandpatrick
    Memawandpatrick 4 месяца назад

    Tfal then?

  • Kenneth Fung
    Kenneth Fung 4 месяца назад

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

  • ThePilotPenguin
    ThePilotPenguin 5 месяцев назад

    Remember to put on your welding mask at 0:09

  • Ian Robinson
    Ian Robinson 5 месяцев назад

    man i love your channel. Thanks for this.

    Vivien BERGOUGNOUX 5 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! 1 месяц назад

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

  • kairon156
    kairon156 5 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 5 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 5 месяцев назад

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

  • Chirp Dee
    Chirp Dee 5 месяцев назад

    I thought the title said space weed, whoops

  • Quetzachapin
    Quetzachapin 5 месяцев назад

    Stupidest explanation EVER. CANDY BARS?

  • nom chompsky
    nom chompsky 5 месяцев назад

    This is cool and all, but I clicked this vid to see the canadarm do some stick welding

  • Project³
    Project³ 5 месяцев назад

    Those candy bars look delicious.

  • Elranoaz
    Elranoaz 5 месяцев назад

    I hate those peanuts it's freaking hard and often hurt me when i'm smashing it in my mouth .

  • Zebobez
    Zebobez 5 месяцев назад

    Hey, that's a Payday bar. I love those.

  • wonszlol
    wonszlol 5 месяцев назад

    Could cold-welding ever be utilized on a scale larger than the nano?

  • K. M.
    K. M. 5 месяцев назад

    Doe s anyone know what this guy does for work, in real life, outside of youtube?

  • ron bergeron
    ron bergeron 5 месяцев назад

    i know that your house, and you have poor taste in kitchen decore

  • TheRealestEver
    TheRealestEver 5 месяцев назад

    real life kerbals

  • Ray Davis
    Ray Davis 5 месяцев назад

    The problem is with similar metals that slide past one another (solar panels, antenna, etc.), thereby scraping the oxide layer away.

  • Bike Talk
    Bike Talk 5 месяцев назад

    What really happened is the cold in space shrank the metals and caused them to bind, nothing to do with cold welding, cold welding is welding without full penetration, e.g get two tight fitting steel tubes and put the outer one in fridge then slide into the smaller one, it won't work

    • Bike Talk
      Bike Talk 5 месяцев назад

      Freezer sorry not fridge

  • gsantee
    gsantee 5 месяцев назад

    mmm Payday....oh no...oh no! he dipped it in chocolate! its not right!!!
    but tastes so good ( ͡° ͜ʖ ͡°)

  • James Estrada
    James Estrada 5 месяцев назад

    I so want a payday.

  • Some Good in This World
    Some Good in This World 5 месяцев назад

    Homemade Oh Henry's, nice :D

  • ot4kon
    ot4kon 5 месяцев назад

    houston capcom. haduken!

  • Random Experiments International
    Random Experiments International 5 месяцев назад

    Very interestig story and facts! Nice video! :)

  • Evan Zhuo
    Evan Zhuo 5 месяцев назад

    I have a candy bar, i have a candy bar... uuuggghhh long candy bar!

  • Barbarian UNO
    Barbarian UNO 5 месяцев назад


    • Tordah!
      Tordah! 1 месяц назад


  • sitrilko
    sitrilko 5 месяцев назад

    Do clean metals in vacuum have a surface tension, like liquids?

  • Joe Love
    Joe Love 5 месяцев назад

    Are the reactions on the molecular level of cold welding metals in space actually the same as welding metal on Earth? Or is it more of a magnetic effect? Or is it a completely different reaction and we just call it cold welding when it really has nothing in common with welding other than the metals stick together?

  • Raw Gameplay
    Raw Gameplay 5 месяцев назад

    I got a curiosity stream ad with veritasium in it

  • Deepak Sridhar
    Deepak Sridhar 5 месяцев назад

    During Gemini space venture, the whole crew was in a Studio! Look at the footage, looks like a setup!

  • JJLatBIM
    JJLatBIM 5 месяцев назад

    So could you cold weld without a vacuum? Could you just ultra-clean the metal surfaces in a gas that won't react with the metal and press them together?

  • Sven Jonkers
    Sven Jonkers 5 месяцев назад

    but why doesn't gold have this gold welding on earth. Or does gold have a little oxide layer?

  • C Martinez
    C Martinez 5 месяцев назад

    Damnit I clicked on this video thinking it was "Wedding in Space"

  • mad kobra
    mad kobra 5 месяцев назад

    so do you need absence of atmosphere or gravity or both for cold welding?

  • Matthew Falcher
    Matthew Falcher 5 месяцев назад

    Now I'm hungry

  • Dupy, Dziary, Muscle Cary.
    Dupy, Dziary, Muscle Cary. 5 месяцев назад

    Really awesome information, that I somehow never heard of before. Tough the video was really boring..

  • Sam Biscits
    Sam Biscits 5 месяцев назад

    Science is so cool!

  • unlokia
    unlokia 5 месяцев назад

    @ 05:07

    _"3: Use gerbil coatings"_ (listen to pronunciation)


  • Rasydan
    Rasydan 5 месяцев назад

    Really interesting representation with that bar xD

  • Tyler Pfaff
    Tyler Pfaff 5 месяцев назад

    NASA=lies. the earth is flat

  • Tyler Pfaff
    Tyler Pfaff 5 месяцев назад

    you mean water welding in a dark pool right?

    • Tordah!
      Tordah! 1 месяц назад

      Prove it's water. You = lies.

  • Elliott Shaffer
    Elliott Shaffer 5 месяцев назад

    is it possible to use outer space to host a true quantum computer.

  • sjbubbly
    sjbubbly 5 месяцев назад

    Derek, it's galling. That's why there is anti-seize on fasteners. Second, using dissimilar metals can be a s***y idea due to galvanic corrosion (check galvanic series). That's why there are dielectric plastics. I think plastic coated metal on moving surfaces is the way to go if it can be done.