How did NASA Steer the Saturn V?- Smarter Every Day 223

  • Published on Aug 8, 2019
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    Behind the Scenes:
    View Linus's video:
    Functional Requirements for the Launch Vechile Digital Computer
    Launch Vehicle Digital Computer
    Dr. von Braun (seated) examining a Saturn computer in the Astrionics Laboratory at the Marshall Space Flight Center
    U.S. Space & Rocket Center,_Alabama
    IBM's page on the Saturn Guidance Computer
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  • Science & TechnologyScience & Technology

Comments • 4 662

  • SmarterEveryDay
    SmarterEveryDay  4 months ago +3438

    I would like to point out several things:
    1. Luke Talley is awesome.
    2. Every single frame of this video requires more memory storage than this memory module is capable of handling. Think about that.
    3. On the second channel we talk about things like how they took into account gyroscopic precession with this bad boy. They also crashed this into the moon and used the signal as a way to figure out what the inside of the moon is like. It's a good video, you should consider watching it. ( )
    4. This is not the Apollo computer. This is the Saturn V computer. They're different. This steered the rocket.
    5. People that support Smarter Every Day on Patreon are really cool and I like them a lot. ( )

    • GodsBoom
      GodsBoom Day ago

      tiny thing: about the salt audiobook, the garum you mentioned is essentially salted fish paste that was "cured" and transported in big amphoras, it would preserve itself very nicely. It also existed before the romans, as far as i know the phoenicians brought it to west southern europe from the middle east around the 8th and 6th century b.C.
      A future archaeologist.

    • Crusifix Jesus
      Crusifix Jesus Month ago

      i try

    • StrangeCalibur
      StrangeCalibur 2 months ago

      Wait, theres a second channel?!!!!!

    • John Kiltoff
      John Kiltoff 2 months ago

      Rishi Ramraj m

  • Amr Koptan
    Amr Koptan 4 hours ago

    That's a great video, I recall "Curious Marc" had his mates trying to get the Apollo computer to work, they had issues with the core memory but they worked through it, so far they've made 26, parts it's so interesting

  • Mauri Cobian
    Mauri Cobian 5 hours ago

    You should've had LGR talk to that man! He There would've been a dozen custodians armed with mops ready to go.

  • FuzzyDragon Cosplay
    FuzzyDragon Cosplay 6 hours ago

    As close to the space and rocket center as I work, I really should go up there one day to go through the newer building.

  • sasha wood
    sasha wood 6 hours ago

    can it run doom?

  • Nathaniel Ricker
    Nathaniel Ricker 9 hours ago

    Read Salt, it is the best.

  • linkuei83
    linkuei83 10 hours ago

    Who downvoted this?

  • John
    John 11 hours ago +1

    When you see this you start to understand how Nasa can say they lost the technology to return to the moon. They're really saying we'd have to invent this all over again...

  • Veselin Krastanov
    Veselin Krastanov 12 hours ago

    so the sad truth is that they didn't have to rush out competitor countries to the moon and wait a few centuries to develop a decent computer that would allow them to go even further than the moon? Oh man that human-ish pride is just causing headaches and serves noone any good.

  • midnightrider
    midnightrider 13 hours ago

    can it run minecraft?

  • __Mort3012__
    __Mort3012__ 15 hours ago

    Garum being made today as Fish sauce?

  • Nāc Ēst!
    Nāc Ēst! 17 hours ago

    0:59 - never do that, he will drop it!

  • xaero76
    xaero76 Day ago +1

    When some one asks... "How can you forget how to get to the moon?!?!".... this is how.... so, fewer and fewer people are around that built the rockets and computers that sent man to the moon, tech has been lost and or cannot be made anymore since it is obsolete and on top of that many of the notes, adjustments and field modifications that were made are also lost to time and history..... so yes, it is possible how to forget to do something like getting to the moon..... so, these days you have to start from scratch

  • Maurits Winkens
    Maurits Winkens Day ago


  • william Ribeiro
    william Ribeiro Day ago

    NASA's dun goofed. They could just strap some RGB leds on that memory module to instantly get triple performance.

  • Gunther Schadow
    Gunther Schadow Day ago

    No, they didn't program the computer by threading the cores. That's B/S. It's RAM! But its totally static. So even after years turned off, the data is still there. I used to have a PDP-8/A and I found my program in the core memory after many years. You might be able to actually read what you have in your hand here.

  • Rick
    Rick 2 days ago

    That is probably why you'll never meet a computer scientist from back then that doesn't work glasses.

  • Rick
    Rick 2 days ago

    The Navy was still using core memory in its air traffic control systems in the early 90s. I was electronics tech back then and I knew the AN/TPX-42. It had 64 kilobytes of core memory. My home computer back then had more memory.

  • Bill Rayvan
    Bill Rayvan 2 days ago

    Imagine believe the propaganda used against USSR ...

  • Reona sabskrep
    Reona sabskrep 2 days ago

    Linus daily dose of trip. . .

  • Jake B
    Jake B 3 days ago

    I tried to watch one of linus’ videos but it just made me feel incredibly stupid. He might as well have been speaking a different language.

  • Ian Shoults
    Ian Shoults 3 days ago

    Ok boomer

  • Mourisyo TV
    Mourisyo TV 3 days ago

    crazy amazing

  • Robbie Goldman
    Robbie Goldman 4 days ago

    Linus, the heck are you doin here ?

  • just teme
    just teme 4 days ago

    really fun and informative video thank you for making it!!!!!!!!!!!!!!!!!!!!!!

    BLACKLIGHT 4 days ago

    This always be mind blowing to watch..

  • king james488
    king james488 4 days ago +4

    when debugging a computer literally meant picking bugs out of a cabinet the size of a car...

  • Jared
    Jared 5 days ago

    Don't stop ending with scripture

  • Hayden Beddow
    Hayden Beddow 5 days ago


  • Submersed24
    Submersed24 5 days ago

    There needs to be more linus and Smarter every day... its like when jimmy neutron and timmy turner had that joint episode.

  • H2Dwoat
    H2Dwoat 5 days ago

    Hi, I remember when I was a child having a Casio calculator watch. I had a teacher tell me that it had many times the memory and I think computing power of the computer that took space ships to the moon. I can remember trying to imagine how that could be, now I understand 🤓.

  • Jayant Rao
    Jayant Rao 5 days ago +1

    well thats a scientisst

  • GlaDi02
    GlaDi02 6 days ago +6

    Linus just realized that he and all "nerds" these days, are not nerds at all.

  • One Life
    One Life 6 days ago

    He talks like an american from ww2.I LOVE OLD PEOPLE.

  • HolzstockG
    HolzstockG 7 days ago

    I would like to be a close friend to Luke to get all the knowledge he has

  • diddlydankmemes
    diddlydankmemes 7 days ago

    uses a SSD

  • John McVey
    John McVey 8 days ago

    This video showed us how computers were put together in the 60's, but it never explained how the data was delivered to the programmer and it never answered the question that is in the title of the video, how did NASA steer the Saturn V? A car driver uses his inbuilt human perspective to determine the speed of the car and looking ahead determines the direction he wishes the car to take, so he turns the steering wheels which turn the car wheels to take the car in the appropriate direction. So what components were used to change the direction of the rocket and how did the rocket get thrust while moving in a vacuum?

  • Dark Matter
    Dark Matter 8 days ago

    So, I guess my only questions would be:
    a) What kind of over-clocks did NASA achieve on that thing... &
    b) Undoubtedly most important... could it run Crysis

  • Saar Z
    Saar Z 8 days ago +1

    It didn't steer it because because the moon landing was staged

  • Trev0r98
    Trev0r98 9 days ago

    This whole video could have been made even better, were it not for the presence of the smirking, coy and elitist Linus Sebastian.

  • Mohammad M
    Mohammad M 9 days ago

    I wish there was a dislike button for advertisements.

  • Coleção Nintendo
    Coleção Nintendo 9 days ago

    Dome, earth plane, ah stupid peoples!

  • lib xo
    lib xo 9 days ago

    I am pretty sure linus understood nothing

  • iamthe1234567890
    iamthe1234567890 9 days ago

    because it was faked in a movie studio. people can't see by eye if it's shot out of the atmosphere and goes the wrong way.

  • Mathias Houlberg
    Mathias Houlberg 9 days ago

    ok boomer

  • joblagz
    joblagz 10 days ago

    idk why im not subscribed in this channel. ive seen your channel more than a decade ago with the chicken and the video with ruperts glass.

  • Cryptic Tundra
    Cryptic Tundra 10 days ago

    Send it to Elon.

  • Mini tomate
    Mini tomate 10 days ago +1

    There's only 3 things that gives me anxiety in this world:
    1. Not having enough storage.
    2. Having the patience to make a memory module.
    3. Linus holding the memory module.

  • Hamlet0727
    Hamlet0727 11 days ago

    dr.stone when?

  • R Ξ Ẏ N
    R Ξ Ẏ N 11 days ago

    linus will drop it ^^

  • Freeload 360
    Freeload 360 11 days ago

    I still cant believe that the phone that im holding right now has 64 gibs of storage and it is SLIM

  • kalexander777
    kalexander777 11 days ago

    Like that he still recalls how his logic was programmed into those magnetic chips. A good programmer never forgets what they build!

  • Bassem B.
    Bassem B. 12 days ago +3

    5:55 I just love - love - when museums employ (or bring on as volunteers) people who were directly involved with a museum's subject matter.
    I recently visited the US again, this time LA and Sand Diego. I visited the La Brea Tar Pits Museum, and had the chance to speak with paleontologists and conservationists firsthand about their work. I visited the LA Science Centre, where the Endeavour space shuttle now resides, and spoke at length with an attendant about the shuttle's operation, spaceLAB, and the privatisation of space programs. Most memorably, I visited the USS Midway and had the privilege and the pleasure to listen to and speak with many, many retired pilots and operators about the various jet fighters on the carriers as well as the procedure of getting fighters up in the air and back down safely. It was incredible. having these people making themselves available, happy to come every day and speak about their experiences, was so enriching.

  • Anand Kumar
    Anand Kumar 12 days ago +1

    Nice to see "Linux tech tips" With "Smart every day"

    PSYCHO 12 days ago


  • Luidi Lombardi
    Luidi Lombardi 12 days ago


  • benas b
    benas b 12 days ago

    Here we go again

  • White Sheep
    White Sheep 12 days ago

    Can anyone do me a favour and explain what they say in a simple way? I have try to pause and do research but still have no idea what they are talking about lol.

  • Chaos Miner
    Chaos Miner 12 days ago

    Im not buying it

  • Snort Memes
    Snort Memes 13 days ago

    Never would I have thought I would hear a NASA Engineer/Scientist with a hillbilly accent