Welding in Space

  • Опубликовано: 26 окт 2016
  • 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

Комментарии • 1 673

  • Armando Silvier
    Armando Silvier 5 дней назад

    At 4.06 nice 1991 "view of Galileo satellie above Earth" cartoon. Very realistic, for something that was imaginary.

  • Discount Pepe Merch Emporium
    Discount Pepe Merch Emporium 8 дней назад

    If only I could listen to a book, instead.

  • Calvin Lippert
    Calvin Lippert 9 дней назад

    Cold welding happens all the Time on earth. Stainless steel gauls in threads if anti seize isn't used

  • Apex Tyrannis
    Apex Tyrannis 14 дней назад

    This makes massive space construction projects to be incredible SIMPLE!

  • Lone_Wolve2k
    Lone_Wolve2k 16 дней назад

    well thought out and perfect video @Veritasium

  • Codex
    Codex 26 дней назад


  • FullOilBarrel
    FullOilBarrel 28 дней назад

    What about actual welding in space?

  • Pulp Free Fiction
    Pulp Free Fiction Месяц назад

    sorry but peanut butter is NOT caramel

  • My Perspective
    My Perspective Месяц назад

    This cold welding could have also contributed to early planet forming.

  • Neurotic Sos
    Neurotic Sos Месяц назад

    Where can I find actual nanotechnology? Is there cool civilian nanotechnology yet?

  • Geoff Gunn
    Geoff Gunn Месяц назад

    Brilliant explanation:)As a boilermaker I always wanted to know if it was possible.
    Does it work with inert gas instead of a vacuum ? Would argon shielding allow it to happen or would they get in the way?

  • mobspeak
    mobspeak Месяц назад

    Why did that space walk look like stop motion? Looks so fake.

  • Lord Krythic
    Lord Krythic Месяц назад

    2:21 Dude...uh, those are peanuts not "a lattice of positively charged ions". Lol. Epic fail.

  • Manoj Velmurugan
    Manoj Velmurugan Месяц назад

    Awesome analogy

  • Robert H
    Robert H Месяц назад

    Instead of eating the chocolate coated end, you turn the bars around, so then you're not trying to speak with food in your gob.

  • Elmo
    Elmo Месяц назад

    TIG welding with out protective clothes :O

  • Christopher Hall
    Christopher Hall Месяц назад

    2:55 never seen it explained like that, but it's an effective analogy

  • m3sca1
    m3sca1 Месяц назад

    Those helmets are fixed and do not turn with heads. That footage is faked. I am not saying flat earth but that moment the spaceman turns his head to look at the craft is bogus!

    • Sturmo12
      Sturmo12 Месяц назад

      Nope, those helmets were _not_ fixed. They were supposed to rotate.
      "The Clark suit was adapted to use the helmet designed by BF Goodrich, a removable fiberglass helmet which connected via a locking ring on the suit. The ring had rotating bearings, allowing the astronaut to turn his head from side to side."

  • Rudy Valdez
    Rudy Valdez Месяц назад

    thats cold welding mostly

  • Stedz98
    Stedz98 Месяц назад

    That guy welding at the start must be keen on getting skin cancer

  • IgelHaut
    IgelHaut Месяц назад

    0:43 looks oddly unreal

  • The Boyos
    The Boyos Месяц назад

    How the hell did they get you to eat a Payday? Those things are awful

  • Jesus Souless
    Jesus Souless Месяц назад

    thats stop motion! lol sooo fake!come on guys! really?!?

  • Razor X11
    Razor X11 Месяц назад

    Thought you said 'WEDDING' In Space.

  • sean li
    sean li 2 месяца назад

    you really enjoyed that candy bar didn't you

  • AnalQueen1969
    AnalQueen1969 2 месяца назад

    No ones gonna talk about how he just tried to look over at a guy welding without his mask on

  • David
    David 2 месяца назад

    Smh. Waste my time.

  • Oh Shit Nation
    Oh Shit Nation 2 месяца назад

    Bru you can friction stur weld!

  • Brennen B
    Brennen B 2 месяца назад

    You can cold weld on earth too

  • Armistice023
    Armistice023 2 месяца назад

    And here I though I was going to see an astronaut actually welding in space...

  • prathification
    prathification 2 месяца назад

    Those candy bars are a great way to illustrate cold welding

  • Dávid Moldován
    Dávid Moldován 2 месяца назад

    Welding in T-shirt without gloves... Nice.

  • tyler D
    tyler D 2 месяца назад

    thanks, now can you tell me how astronaughts actually weld in space

  • Arindam Dutta
    Arindam Dutta 2 месяца назад

    I wonder, how did he move his headpiece??
    Isnt that meant to be fixed??

  • Todd Prifogle
    Todd Prifogle 2 месяца назад

    I wouldn't want to open that hatch again.

  • Tyler Morgan
    Tyler Morgan 2 месяца назад +1


  • Kevin Mathewson
    Kevin Mathewson 2 месяца назад


  • Cielo y cirros
    Cielo y cirros 3 месяца назад

    Do not speak with your Mouth full its absolutly disgusting >:v

  • Ronald Gearhart
    Ronald Gearhart 3 месяца назад +1

    AAAAAAANNNNNDDDDD people still actually believe we went into outer space

    • Luke Ryan
      Luke Ryan 2 месяца назад +2

      Ronald Gearhart retroreflector on the moon

    • Ronald Gearhart
      Ronald Gearhart 2 месяца назад

      austin irwin you are one of your government's sheep if you think that we do

    • austin irwin
      austin irwin 2 месяца назад +1

      You are mental if you think we dont have people in space right now.

  • Carlos
    Carlos 3 месяца назад

    Is there anyone who can explain why the starting footage of the astronaut seems so strange? Like it is motion picture? And didnt the astronauts helmets were'nt supposed to not move left or right and should'nt they be fixed straight? Always were wondering what is with this astronaut footage. Maybe someone can explain.

  • eltimbalino
    eltimbalino 3 месяца назад

    Audible.com sponsor a lot of videos. I like it when I hear it mentioned, because I know I'm going to hear a recommendation for another interesting book. It's the main reason to wait through the repeated spiel about them at the end of the videos.

  • John Turner
    John Turner 3 месяца назад

    It happens with stainless steel in atmosphere as well

  • 4Foxsnakes
    4Foxsnakes 3 месяца назад

    Do NOT under any circumstances eat food with a HQ microphone hooked up. Couldn’t even finish the video.

  • Prequel
    Prequel 4 месяца назад

    Sticky door? Care to elaborate?

  • Mr. Mojo
    Mr. Mojo 4 месяца назад

    can you create alloys?

  • Agnivesh Pali
    Agnivesh Pali 4 месяца назад

    I would love to be tethered by long blonde hoes.

  • Mark Jay
    Mark Jay 4 месяца назад

    That clip of the nano wires welding together was pretty cool

  • Jani Akujärvi
    Jani Akujärvi 4 месяца назад

    Cold welding : en.m.wikipedia.org/wiki/Cold_welding

  • Griffin Stahura
    Griffin Stahura 4 месяца назад

    A very smart teacher told me that the molecules are going so slow that when two metals contact with drift into the other metals there for making no marks and .along it into one piece

  • Jameson Ly
    Jameson Ly 4 месяца назад

    Is cold welding something related in the gauge blocks?

  • Will
    Will 4 месяца назад

    *Gets an ad with Derek in it on a video by Derek*

  • imacenurface
    imacenurface 4 месяца назад

    Bull crap. How do you weld without a ground?

  • Ta3iapxHs
    Ta3iapxHs 4 месяца назад

    another amazing episode, thanks

  • 6061. com
    6061. com 4 месяца назад

    Ok, now I want to ACTUALLY weld in space.

  • Rohit Chauhan
    Rohit Chauhan 4 месяца назад

    Mouth watering

  • Lars-Oskar Nag
    Lars-Oskar Nag 4 месяца назад

    How to get a sunburn and skin-cancer 101 in the beginning there!

  • C Daniels
    C Daniels 4 месяца назад

    What a bunch of bs. Ok so what is between the atmosphere and the vacuum of space ? There has to be something separating them ? Vacuum has to have a hard wall or surface to work .

  • Franz Joseph Liszt
    Franz Joseph Liszt 4 месяца назад

    nice payday ad

  • VITA kyo
    VITA kyo 4 месяца назад

    Man on the moon is a hoax , how can you believe in that ?

  • Jefferson
    Jefferson 4 месяца назад

    This videos fake
    The earth is flat BRO

    • J.J. Shank
      J.J. Shank 4 месяца назад

      fuk u retard the earth is a trapezoid

  • apex128
    apex128 4 месяца назад

    I think the metals used in space are all painted or powdercoated anyway.

  • Shreesha S
    Shreesha S 4 месяца назад

    If metals do not 'weld' on earth then how do two metal pieces conduct electricity when they are brought in 'contact' ?

  • mickey cos
    mickey cos 4 месяца назад

    WOW and people are buying this fish story !!! the Astro NOT head gear does not turn with the head ,.. this was the dead give away for Fake Space ruclip.com/video/Z3pep6RW3Hs/видео.html Earth is Flat do your research

  • Snowfall Thecat
    Snowfall Thecat 4 месяца назад

    Yes. i know, cold welding in space. But it wont be the method used for large scale construction in space, if all you did was put two surfaces together you will still have a lot of tiny gaps, no surface is never perfectly flat down to the atomic scale. it would not be a strong joint. you will not pass a CWB bend test by cold welding. i guess a video i would have loved to see is how such hot welding could be done in space, with spatter, the lack of atmosphere, shielding gas, space suits, etc

  • xnivektonx
    xnivektonx 4 месяца назад

    Space maybe the final frontier, but it’s made in a Hollywood basement!

  • andy hasi
    andy hasi 5 месяцев назад

    nasa is fake

  • Mr. FitNLit
    Mr. FitNLit 5 месяцев назад

    That space footage looks weird, fake even, almost animated like gumby

  • long meat Tyrone
    long meat Tyrone 5 месяцев назад

    I discovered this on my own

  • mattimus ??
    mattimus ?? 5 месяцев назад

    Welding in space is the same as welding in the mystical land of narnia..

  • Arnav Sharma
    Arnav Sharma 5 месяцев назад

    What is your nationality

  • Jin Han Lee
    Jin Han Lee 5 месяцев назад

    if said that metals on earth has oxide layers on it, how can metal conduct electricity through electrons in direct current?

  • Brad Tremblay
    Brad Tremblay 5 месяцев назад

    what a joke

  • Joel Hudson
    Joel Hudson 5 месяцев назад

    Tasty explanation of cold welding!

  • AB World
    AB World 5 месяцев назад

    nice video.well explained...i got a clear concept about cw# thank you so much#

  • Charles Wiltsey
    Charles Wiltsey 5 месяцев назад

    If you guys are interested you can check out friction stir welding. Friction stir welding transforms the metals from a solid state into a "plastic-like" state, and then mechanically stirs the materials together under pressure to form a welded joint. It doesn't use gas or a shielding gas. Making FSW small enough to fit in the cabin would benefit greatly.

  • David Huynh
    David Huynh 5 месяцев назад

    Thought it said wedding in space :l

  • Grzegorz Durda
    Grzegorz Durda 5 месяцев назад

    Cold welding was first recognized as a general materials phenomenon in the 1940s.

  • Grzegorz Durda
    Grzegorz Durda 5 месяцев назад

    That video is so fake lol. That's not space footage. lol. This is a layered video. Thats why the earth spins smoothly and the astronaut actor is so twitchy and jumpy in the same camera frame.

  • alex tworkowski
    alex tworkowski 5 месяцев назад

    Yeah and tell him about the twinkie.

  • David Boyea
    David Boyea 5 месяцев назад

    Greaaaat video. This concept helped me with many concepts

  • westwater73
    westwater73 5 месяцев назад

    I some times get spaced out if I'm doing some really nice tig bench work. Fat spiff tunes love it.. some music's no good for tig though, it's got to have a good beat to dab to, Donna summers, Hot stuff is just perfect!!

  • Laugh 944
    Laugh 944 5 месяцев назад

    I thought it was weeding in space

  • LynxProd
    LynxProd 5 месяцев назад

    Fascinating! I never knew that was possible!

  • MrSorbias Tutorials
    MrSorbias Tutorials 5 месяцев назад

    That was maybe one of the best excuses to eat candies. :D

  • Stacy Smith
    Stacy Smith 5 месяцев назад

    I had heard about the door cold welding in space, but this is the first time I learned it was an incorrect guess.

  • Ricardo Pesenti
    Ricardo Pesenti 5 месяцев назад

    Yeah, legit. Metallic bonds are very different from ionic and atomic bonds. The atoms are in a structure with an electron cloud surrounding them.
    so whitout oxide layer and when two metal surfaces perfectly touch one another whitout any unperfection, two metalls will weld.
    But since the contact needs to be perfect whitout any gaps or dirt, that's no big problem :)

  • out law
    out law 5 месяцев назад

    Too fake

  • radwizard
    radwizard 5 месяцев назад

    Cold Welding? Awesome, I just thought it was only the cause of friction, did not think it could happen in Space Naturally. Right on!

  • The Director
    The Director 5 месяцев назад

    Did you just put chocolate on a payday bar?! Why haven’t I thought of this before!

  • Quan Mendoza
    Quan Mendoza 5 месяцев назад

    What a newb tig welder he didn't even split the filler metal 😂😂😂

  • Nothing\
    Nothing\ 5 месяцев назад

    Not every metal forms an oxide layer. you should have specified that. The way you explained it makes it sound like this happens to every metal in an atmosphere of oxygen. If this were the case, you wouldn't need a vacuum to cold weld, but only an atmosphere devoid of oxygen like an inert atmosphere of Argon. Also, Richard Feynman talked about cold welding in his lecture series from 1964, 1 year before Gemini IV. So they had to have been aware of the phenomenon at the time of the mission.

  • purgruv
    purgruv 6 месяцев назад

    In space no one can hear you weld.

  • Jayk0b
    Jayk0b 6 месяцев назад

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

  • Vince Veloce
    Vince Veloce 6 месяцев 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 6 месяцев назад

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

  • retnikt
    retnikt 6 месяцев назад

    I read this as "Wedding in Space"

  • Mark Smith
    Mark Smith 6 месяцев 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 6 месяцев назад

    I likes your name I do.

  • Pr
    Pr 6 месяцев 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 6 месяцев назад

    made this video as an excuse to eat a payday?