How Astronauts Land on the Moon - Smarter Every Day 250

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A very special thank you to Wayne Ottinger
Check out the AMAZING website by Ben Feist that synchronizes all Apollo data:
I had to find a lot of archival footage to make this video. Thanks to Devin for helping me find the original Apollo LLTV footage from Ellington.
A special thank you to steveslater1987 for providing the footage and audio of the Neil Armstrong Interview after flying the LLTV.
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Ambiance, audio and musicy things by: Gordon McGladdery
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Warm Regards,


  1. SmarterEveryDay

    SmarterEveryDayחודש לפני

    We're going back to the moon, and we're going to need to train Astronauts how to land. This video is the result of trying to understand that control problem better. in the next video of this series, I'll show you footage from an actual NASA Lunar Lander software test I participated in many years ago. Also, I'd like to say express grateful I am to everyone who supports Smarter Every Day on Patreon at . If you've never considered being a Patreon of Smarter Every Day, then feel free to click the link if you'd like to see what it's all about. If not, then no big deal! I'm grateful that you're here. Warm Regards, Destin

  2. Gavin AndStuff

    Gavin AndStuff7 ימים לפני

    Pshhhhh old news. I could land on the moon.

  3. adam philp

    adam philp8 ימים לפני

    Yyhqara6 you

  4. Almaadin

    Almaadin10 ימים לפני

    @MaGaO true, but the software to land reliably is fairly new and getting better all the time. Most of the failed Mars landings happened without the benefit of the sensors and algorithms available now. It's still best to train the pilots of course.

  5. MaGaO

    MaGaO11 ימים לפני

    @Almaadin Many Mars probes have crashed. If humans are aboard, it makes sense to train them just in case.

  6. hernan jimenez

    hernan jimenez11 ימים לפני

    @Almaadin that was done on gullible lol. Mars supposedly is 1% density of earth atmosphere. which means no air. an you need air to slow parachute and need air for lift when they eventually fly helicopter drone. so the impossible without air debunks your Mars landing 😂😂😂😂😂😂😂🤣🤣🤣🤣😭😭😭😭😂🤣🤣🤣🤣😂😭😭

  7. Top Secret

    Top Secret2 שעות לפני

    5:40 VTOL was in relative terms extremely common for test technology in the late 50s and 60s, with Americans, British and Soviets having test aircraft at about the same time. Surprisingly, the West Germans had the best test vehicles for VTOL, one of them being a cargo aircraft.

  8. Saghetti

    Saghetti4 שעות לפני

    1:43 Among Us?!?!?!?! 😳

  9. Thomas Johnson

    Thomas Johnson5 שעות לפני

    we going to the moon again !!!!!!!!!!!!!!!!!!!!

  10. Marco Mendonça

    Marco Mendonça5 שעות לפני

    Best way is: No human hands allowed! We can already land or fly anything better by computer than by hand, even the specialized ones.

  11. Communist Cuber

    Communist Cuber11 שעות לפני

    1:45 - Amungus 1:59 - Amungus

  12. John H

    John H11 שעות לפני

    Wayne Ottinger is too humble (in regards to engineers of the past).... IMHO (i'm a computer/software engineer) engineers from decades past that's specialized in a certain field needed to be well versed in the complementary fields as well, IE: Software/Computer with electrical, mechanical, materials engineering. I find that today the engineering practices are too hyper focused & more study into the complementary fields would not only move our technology forward faster & with increased quality, but also at a better cost for society as a whole...... The more I study & tinker in the electrical & materials engineering side of things, it's made me a better engineer 10x **** rant over ****

  13. J. B

    J. B14 שעות לפני

    why didn't they just use helium balloons???? get me a job at NASA stat!

  14. mfaizsyahmi.

    mfaizsyahmi.16 שעות לפני

    Destin: "among us" 12 year olds: _suppressed laughter_

  15. Xinan

    Xinan16 שעות לפני

    1:45 A MONGUS!!

  16. Love Supreme

    Love Supreme23 שעות לפני

    A Funny Thing Happened on the Way to the Moon.

  17. IMayHaveNukes

    IMayHaveNukesיום לפני

    1:58 Amogus

  18. David Tower

    David Towerיום לפני

    You are one smart dude, there is no doubt, and I love your videos. You posses a very down to earth way of explaining topics that is very appealing. But, I want to offer some friendly advice on the use of the phrase "for free". You cannot give or get something "for free". Inserting the word "for" implies that you have something called "free" that you can give or get in exchange for something. So, first you have to give or get something called "free" before the transaction can take place. Can't be done. The proper way to phrase it would be to simply say "I'm giving you something "free". It's proper and it sounds correct, because it is. Growing up in a family full of teachers has made it impossible for me to let this egregious misuse of the phrase impossible to ignore. However, nearly everyone misuses it, so don't feel too bad. :-} Next up will be my rant on the overuse of the word "basically", which basically has no basic meaning and is nothing more than a basic filler word. There, I feel much better now... Hey, maybe I should start a channel of my own.


    DA PHENOMENALZיום לפני

    I love how some people are commenting that humans never went to space on other's comments, and not commenting directly. Cuz they don't have the courage to and in their heart they know they are wrong😂 but won't accept cuz they don't want to and look stupid in front of others😂

  20. Stonks Airlines

    Stonks Airlinesיום לפני

    1:45 sus

  21. GiuseppeSan

    GiuseppeSanיום לפני

    Great video, great to hear from Mr. Ottinger

  22. Emil P

    Emil Pיום לפני

    1:44 amogus

  23. Naveen Paraparan

    Naveen Paraparanיום לפני

    The flimsy asphalt wessely depend because country extracellularly scorch pro a tidy mom. tired, youthful dust

  24. Test Test

    Test Test2 ימים לפני

    This was fascinating.

  25. Alexandra Toftul

    Alexandra Toftul2 ימים לפני

    Thanks for the great video! I work on HLS and our CE recommended this LOL


    HERGRYN2 ימים לפני

    3:20 nice tracking Destin!

  27. Joe O'Connor

    Joe O'Connor3 ימים לפני

    But if NASA can program a robot to drop another robot on Mars all on its own. Why do astronauts need to land on the moon on their own? Is it not safer to use the programming? No atmosphere seems like it would create a very consistent and reliable medium to program for, then you don't need to add the possibility of human error in landing.

  28. StormCrown

    StormCrownיום לפני

    Yes, but robots aren't as good as humans yet.

  29. TheSharko123

    TheSharko1233 ימים לפני

    If i recall correctly wasn't the Harrier also flying the late 60's?

  30. Ean E

    Ean E3 ימים לפני

    1:58 Whaaaaa?

  31. Sunken Slinky

    Sunken Slinky3 ימים לפני

    I wish the U.S still strived to be #1 and invest money into space rather then using our tax dollars to give other countries welfare all the time. It's a shame to think about how far ahead we would be if we were isolationist and reinvested our own money into our own economy.

  32. Jamane Ma Raas Hollington

    Jamane Ma Raas Hollington3 ימים לפני

    You should have worn an omega speedmaster motm

  33. Jamane Ma Raas Hollington

    Jamane Ma Raas Hollington3 ימים לפני

    Great video

  34. Jeremiah Johnston

    Jeremiah Johnston3 ימים לפני

    Silly. That can’t land on the moon. Flat Earth Baby

  35. Atlas

    Atlasיום לפני


  36. Lukas Smith

    Lukas Smith3 ימים לפני

    Neil Armstrong... Boiler Up!!

  37. Notable Discomfort

    Notable Discomfort3 ימים לפני

    Imagine if they had Kerbal Space Program back then.

  38. Dizzi

    Dizzi4 ימים לפני


  39. Michael B

    Michael B4 ימים לפני

    Incredible stuff. A truly great group of minds. You will never be thanked enough, Mr. Armstrong. Rest peacefully among the stars.

  40. Josh Lounsberry

    Josh Lounsberry4 ימים לפני

    You should continue your playlist on lawn tools do an episode on rotary hedge trimmers

  41. gambler

    gambler4 ימים לפני

    Every day...

  42. Ankur Debbarma

    Ankur Debbarma4 ימים לפני

    Please get Michael Collins and Buzz Aldrin together.

  43. Ankur Debbarma

    Ankur Debbarma4 ימים לפני

    Destin got hold of a LEGEND.

  44. Matthew Sikora

    Matthew Sikora4 ימים לפני

    I tried to watch this with a straight face, but I simply cannot!

  45. flameceo

    flameceo4 ימים לפני

    wtheck ILmines. why you hide Dustin update from my subs page? Luckily I search smarterEveryDay out of curiosity.

  46. Some Canine

    Some Canine4 ימים לפני

    Goes to show you how much we take all of the technical tools for granted. I imagine engineers will pre-program all of the error correction techniques in a computer for the re-return, but the Apollo crew never had that. They had to do everything with mechanics and training. I think it will be much less of a technical challenge on each individual person, but still a staggering engineering feat overall.

  47. Gratten Jenkins

    Gratten Jenkins5 ימים לפני

    Thank you, what a very interesting and informative video

  48. sterlingwulf RBLX

    sterlingwulf RBLX5 ימים לפני

    how much would be saved in fuel weight if the rocket first stage was accelerated on a maglev ramp before first stage engine ignition? seems like maglev trains are similar sizable payload can be accelerated to high speeds using electricity and starting a rocket to escape velocity from maglev speeds would have a huge impact compared to starting from a standstill

  49. Drunk Astronaut

    Drunk Astronaut5 ימים לפני

    Can you do a video on the “ Tennis Racquet Theorem” aka “Dzhanibekov Effect”

  50. LoungeActVideos

    LoungeActVideos5 ימים לפני

    Someone get Mr Ottinger's half burnt snake cartoon made.

  51. Brian Huntington

    Brian Huntington5 ימים לפני

    I absolutely love this video!! My Grandfather was a Quality Control Engineer with NASA and worked on every APOLLO mission!! My Grandfather oversaw the manufacture and installation of the battery systems of the lunar lander! A secret my Grandfather told me before he passed afew years back was. Before they affixed the housing of the batteries, my Grandfather and his crew had a bronze plaque made with their names inscibed on it. They attached it to the top of the housing that covered the batteries!!!! This could have caused a mass firing event if they were caught!!! So now my Grandfather's name is on the moon! This I am very proud of! Just thought you might like to hear the story.

  52. Shawn Hunter

    Shawn Hunter6 ימים לפני

    to land on the moon you have to buy AMC and GME

  53. nxlxn

    nxlxn6 ימים לפני

    RIP Neil Armstrong. Yes it's been 9 years, but he was all of us.

  54. R Я

    R Я6 ימים לפני


  55. Saran O.p

    Saran O.p6 ימים לפני


  56. Sudeep R

    Sudeep R6 ימים לפני

    So they essentially made a CNC machine that controls the craft?

  57. Darth Insidious

    Darth Insidious6 ימים לפני

    NASA : Does all of this Some incel on the internet : "MoOn LaNdInG wAs FaKe!"

  58. Michael Condon

    Michael Condon6 ימים לפני

    I’m looking forward to seeing more videos on returning to the moon. Especially to see what the engineers come up with for a test vehicle to fly here on earth.

  59. John Doe p144.1

    John Doe p144.17 ימים לפני

    Nasa openly admits that humans cannot safely travel through the Van Allen Belts.... Yet this problem was solved in 1969-1972. What gives?

  60. Atlas

    Atlas6 ימים לפני

    @John Doe p144.1 The most important bits, like video and audio, sure. Telemetry, not so much, unless of course you're dealing with a severe malfunction, like in Apollo 13. In that case, keeping the telemetry tapes makes sense, and they did.

  61. John Doe p144.1

    John Doe p144.16 ימים לפני

    @Atlas I hear what your saying but at the same time the moon landing was THE most significant scientific achievement in human history... Wouldn't you think that is something that would be held onto and cherished for generations?

  62. Atlas

    Atlas6 ימים לפני

    @John Doe p144.1 It's a shame they lost the original tapes. But I supposed it made sense for them to be erased, since the video signal had been archived elsewhere and keeping telemetry around isn't standard.

  63. John Doe p144.1

    John Doe p144.16 ימים לפני

    @Atlas OK, fair enough. What about the fact that Nasa "lost" over 13,000 reels of telemetry data. Also contributing to the official explanation as to why we haven't been back to the moon.

  64. Atlas

    Atlas6 ימים לפני

    @John Doe p144.1 Not really. The rocket used in the Apollo program is no longer manufactured. The last Saturn V was made nearly half a century ago. Can't send people beyond LEO without a a massive rocket.

  65. chau do

    chau do7 ימים לפני

    The Plan is good! Hopefully it will happen soon! I would like to see human beings will be traveling to the Moon for their vacations and back to the earth! And then Human being will develop the advantage technologies to travel to other planets to live, working, vacation, ...... and back to the Mother Earth!

  66. Nighthawk

    Nighthawk7 ימים לפני

    I don't know about you.... but these prototype propulsion techniques, if they were ever snatched by the military and repurposed for military vehicles,.... and IF one, or some, if any, of those prototypes were seen by the public.... there's a really good chance they'd look like flying saucers, to the layman. think about it... 1964 era, middle of the space race, lots of UFO sightings, and now we know that NASA had a *FREAKING VTOL PROTOTYPE* ?!?!?!??!

  67. Chris Gonzalez

    Chris Gonzalez7 ימים לפני

    The immense drawbridge laparoscopically kill because submarine coincidentally jail above a tame parent. big, moldy slice

  68. Zoltán Kozma

    Zoltán Kozma7 ימים לפני

    Am I missing something here? Why wouldn't they try to evenly fill the system with helium compartments or vacuum? Would that be beyond the limit of how much that volume could lift compared to the weight of the lunar lander?

  69. Travis James

    Travis James7 ימים לפני

    Wayne is a national treasure. I love AMERICA!!!!!!!

  70. Darp

    Darp7 ימים לפני

    Among us??!!!


    FILM N SHOOT CO7 ימים לפני

    My pal Jonathan Dimock works for NASA. He’s the man who speaks to the president re NASA biz. My pal Johnathan had zeroooo experience to have got this job....

  72. The Revolution Will Not Be Televised

    The Revolution Will Not Be Televised7 ימים לפני

    The X-14 is basically a copy of the British Hawker Siddeley P.1127. Which later became the Harrier Jump jet.

  73. Dwagin Con

    Dwagin Con7 ימים לפני

    1:44 sus

  74. Vincent Pang

    Vincent Pang7 ימים לפני

    The lumpy gender phenomenologically request because plastic univariately grin through a acoustic grain. wiry, clammy magazine

  75. Who Farted

    Who Farted7 ימים לפני

    How did they know the lunar gravitational force before going to the moon?

  76. Ася Гумерова

    Ася Гумерова8 ימים לפני

    Эти "проэкты"-возможность воровать общие деньги,играть во взрослые игрушки и не быть наказанным,а быть "уважаемыми космическими ворами" Я предпологаю.что верхушка США и СССР были в сговоре и много лет смеялись над доверчивыми гражданами...

  77. Chas Wolf

    Chas Wolf8 ימים לפני

    We all see drones, and the amazing technology they use to fly straight, steady, and in some cases, autonomously. I'm sure there is a tie-in here.

  78. Brandon Routier

    Brandon Routier8 ימים לפני

    Didnt the Harrier fly in 1967?

  79. djmips

    djmips8 ימים לפני

    What actually happens on the moon landing(s) low-key confirmed by his guest Ben Feist is that the Apollo Guidance Computer (AGC) does all of the flying until final approach where Armstrong and other astronauts use the rate-of-decent mode (P66), a mode not unlike drones for the home market where the stabilization is handled by the AGC and Neil uses the fly by wire stick to control horizontal velocity, avoid a boulder field and then bring bring the horizontal velocity to zero; another two switches can speed up or slow down the computers rate of descent in increments of one foot per second. I know the LLTV also had a computer. How similar was it's stabilization and controls to the actual LEM and the AGC's P66?

  80. el blanco _

    el blanco _8 ימים לפני

    Man, the engineer of the LLTV, what a treasure!

  81. Dylan Wager Music

    Dylan Wager Music8 ימים לפני

    1:45 1:58

  82. Adam Armstrong

    Adam Armstrong8 ימים לפני

    i dont want to be apart of this planet anymore

  83. TheEmeraldSword

    TheEmeraldSword8 ימים לפני

    4:06 the the angle dynamically shook with his hands, now that's detail.

  84. Kerrie Arkwell

    Kerrie Arkwell8 ימים לפני

    This was an amazing video. Thank you. Understanding the why truly is as pertinent as the how. If you understand the why, then engineers can use updated techniques if possible instead of just repeating work arounds.

  85. Dan Bertucci

    Dan Bertucci8 ימים לפני

    The communists now in charge want nothing to do with moon landings anyway, so...

  86. SlayerofFiction

    SlayerofFiction8 ימים לפני

    I don't even drink and I want the lunar shot glass

  87. Gert Kruger

    Gert Kruger8 ימים לפני

    I really do not see the point. The next one will be landed by ai.

  88. KatzRool

    KatzRool8 ימים לפני


  89. DrCash7

    DrCash78 ימים לפני

    4:30 "and if there were no drag.." If there were no drag then there would be no thrust/movement. Just like if there were no weight/gravity there would be no lift.

  90. DrCash7

    DrCash78 ימים לפני


  91. Ephraim

    Ephraim8 ימים לפני

    Would be quite impossible to control Starship HLS by hand. Will be autonomous.

  92. Dhoulmegus

    Dhoulmegus8 ימים לפני

    NASA scientists shoulda just played Kerbal Space Program. I was landing on the Mun as a teenager.

  93. strshooter

    strshooter8 ימים לפני

    Well done video, learned a lot, (like there are still people that think we didn’t go to the moon, and the earth is flat. I’m sure there are still those that think Hitler didn’t murder millions of people in death camps...) My question is, why go back to the moon? What’s there that we can benefit people? It will cost billions of dollars, tax dollars, just to say we can it? It’s a moon with ... not much on it. The distances to leave our solar system to anyway else are just too far away. Sorry, this isn’t Star Trek, or some other fantasy TV show... .

  94. maksphoto78

    maksphoto789 ימים לפני

    Nah uh, they didn't "make sure velocity is zero when touching the surface". They had probes sticking out of lander which, when the probes touched the surface, automatically shut the engine down (while still some meters above the ground), so the lander gently dropped to the ground.

  95. Doritos XD

    Doritos XD9 ימים לפני

    1:58 among us 🤑🤑🤙👌👍

  96. Kevin Palmer

    Kevin Palmer9 ימים לפני

    Your questions and the way his eyes lit up. Surprised and also happy to see someone younger understanding his knowledge. Awesome

  97. Spo8

    Spo89 ימים לפני

    Mr. Ottinger is SO COOL. Man, you just know he has countless other amazing stories.

  98. kkcsak ndclon

    kkcsak ndclon9 ימים לפני

    The wild patricia univariably influence because belief exemplarily sigh unlike a flashy comic. aromatic, lethal lyocell

  99. Omadais

    Omadais9 ימים לפני

    Please do a video on the X-14

  100. The Bloody Truth

    The Bloody Truth9 ימים לפני

    Back to the moon? 😅

  101. Ciorram1

    Ciorram19 ימים לפני

    Comment for algorithm.

  102. Leandro Gogola

    Leandro Gogola9 ימים לפני

    I confess, Mr. Ottinger make me laugh a few times. What a great man

  103. Dadly25

    Dadly259 ימים לפני

    1:45 when the impostor is sus

  104. Ron Burghandy

    Ron Burghandy6 ימים לפני

    I knew there'd be at least one lol

  105. DavyBoySmith

    DavyBoySmith9 ימים לפני

    Destin, I have a friend who has an LLTV sitting in his shed at work. I was fortunate enough to get a tour of his "work" and I can honestly say as much fun as it looks... yeah, no... His work is the same AFRC mentioned in your video. I was most impressed by the Peroxide thrusters mounted on every corner and axis of the unit. A tour of the Armstrong facility was the most incredible thing I have had the opportunity to experience. if you are ever there ask about the LLTV and perhaps they can take you to the closet for a look see. God Bless you man, I love your take on science.

  106. Egon Pax

    Egon Pax9 ימים לפני

    We aren’t going back to the moon, not with lunchbox Joe in power.

  107. Brian Huntington

    Brian Huntington5 ימים לפני

    obama and biden almost destroyed the Space industry! I live in Brevard county. TRUMP brought back space flights and the area is growing immensely!! Everyone is scared biden is going to do somthing stupid, again!

  108. Brian Huntington

    Brian Huntington5 ימים לפני

    Very true

  109. gordonfree man

    gordonfree man9 ימים לפני

    Everybody know Apollo is a big lie

  110. Atlas

    Atlas9 ימים לפני


  111. Binky Carolina

    Binky Carolina9 ימים לפני


  112. John Bravo

    John Bravo9 ימים לפני

    @ 5:45 ---> food for thought, the Harrier Jump Jet was first tested in 1967 and introduced into service in '69... 😉

  113. Florian Walter

    Florian Walter9 ימים לפני

    Why not installing a helium baloon, that lifts 5/6 of the lander's weight?

  114. Super Song

    Super Song9 ימים לפני

    at this point this man knows too much to be safe 🙏😂

  115. Ryan Rich

    Ryan Rich9 ימים לפני

    Where is the loud roar of the rocket when you hear them calmly talking as lunar is landing?

  116. Ryan Rich

    Ryan Rich9 ימים לפני

    @Atlas nms was tight

  117. Atlas

    Atlas9 ימים לפני

    It's a pressure fed engine firing in a vacuum, come on.

  118. Hirvieläin

    Hirvieläin9 ימים לפני

    I would assume the lander's computer will perform the descent and landing in Artemis program.

  119. Suphakrit Phantharat

    Suphakrit Phantharat10 ימים לפני

    Why do we need manual landing when we sent multiple rovers to mars and it has ability to auto land with high precision