The Insane Engineering of James Webb Telescope

[@wockyslush3038]

Back in 5th grade I went on a field trip to the NASA Goddard facility and we got to see parts of the satallite being built. Years later, I graduated high school, and they're about to launch it in 4 days.

[@thepeff]

@@jmax8692 ...and you’re being a jerk?

[@wheatley1866]

@@jmax8692 that's great man but no need to be an ass about it

[@bearllo22]

@@jmax8692 cringe emojis bro

[@BJamesThompson]

I bet it makes you that much more emotionally invested! 💕 The excitement I have for this is totally derived from my childhood curiosity, I just wish I got to go on a field trip like that! Lol

[@Tensho_C]

@@jmax8692 uhh... with? so you don't even work there...

[@mikeg3439]

We don't even blink at an annual defense budget of nearly 800 billion dollars, but many are startled at this telescope project costing 10 billion (over the course of a number of years). We have strange priorities as a species.

[@maninthehills7134]

If you consider how often people have unjustly deleted other people in human history, it's not that strange. If anything, JWST is a strange anomaly in that data.

[@brettbuck7362]

Strange priorities? Defending yourself from people wanting to kill you, take your freedom, and take your property is *vastly more important* than looking at a telescope, no matter how you imagine it. And, defending yourself is a *necessary prerequisite* to indulging yourself on space telescopes. I am very impressed and glad we built this telescope and will learn the things we will learn, but you *must first live in a safe and secure civilization* before you can execute such a mission.

[@An1MuS]

@@brettbuck7362 yes, defending as in going to extract oil. Sure.

[@Sofia-wx2ht]

Indeed!! 🤣

[@Ryan-by8ui]

Yep you’re right. There’s just absolutely no way we’d be able to defend our nation without those 3,000 nukes and few dozen aircraft carriers. Used both of those a ton in the most recent war

[@giantWario]

Just wanna add the launch went so well that it will double the lifespan of the James Webb telescope. They ended up using much less fuel than they thought they would need to put it in the Lagrange point.

[@DanOades]

That's such great news!

[@Morning404]

Thanks for the update man!

[@PrimusInvictus]

thanks

[@ChrisZukowski88]

Niiiice. Only good thing that came out of 2021. Would be funny if the first thermal image that emerges is of E.T. on the toilet a few billion years away

[@misterjack9991]

oh shit, so it lifespan will be 20 years now?

[@justusweustink6042]

As a high school physics teacher I'm so thrilled to use this video as education material after the summer break. Truly wonderful!

[@Jake_Gotthard]

You Sound like that 1 cool teacher Who understands how horrible School is and isnt as harsh as a drill seargent

[@dreamman5588]

Hh

[@trentcard]

the cool teacher has appeared

[@RealEngineering]

Ah feck, I'm just realizing in the rush to get this video out that we cut a mention for NightHawkingLights video on thermoacoustics. I cut the explaination down and did not realize I threw his mention out with it. kzbin.info/www/bejne/oZylc56Hbc95iLs

[@RealEngineering]

@@alexandermartin1837 It's becoming very obvious that you work for that channel. Stoooop spamming

[@BazilRat]

I don't think that link goes to the right place!

[@LDSG_A_Team]

@@RealEngineering heh. Thought they were being sneaky, didn't they? Anyways thanks for the video! I've been eagerly anticipating this one ever since the video you did on Percy and Ingenuity

[@danco.9883]

@@RealEngineering You do an amazing work. You put so much time and dedication on your work to deliver a great product. I greatly respect that. Asking to much makes no sense it's not an open bar.

[@razmecer6410]

@@BazilRat You're right

[@jimtekkit]

The JWST cryo cooling system is just something else entirely. I work as an engineer on land vehicle cooling systems, and the thing about cooling systems is you don't realise how little you understand about the science behind active heat transfer systems until you actually start designing them. The designers would have had to simulate and account for every single joule of thermal energy throughout the entire telescope, and then design such a cutting edge active cooling system with moving parts that can last for decades of non-stop operation with no servicing and with no allowances for failure. How many times the engineers would have woken up at night in a cold sweat! I'm not even one bit surprised that it cost $150 million to design.

[@whythefuckdowehavethisherenow]

If anything, being aware of RnD costs for major mechanical systems, I'm surprised it didn't cost more.

[@rljpdx]

not only that, but i noticed passive analog cooling is ultimately being used to vent/radiate away the heat. what i mean by this is that it looked like they were using simple heat transferable metal (probably copper) to simply radiate the heat away from components and guide it where it's needed (the heat radiation). it's amazing something so technological uses one of the first ever but most used cooling methods devised. i'm not an expert on thermodynamics and my engineering skills are computer related, but it's all simply fascinating. maybe you could tell us more or correct me if my description is sketchy.

[@jasonyoung1622]

@@rljpdx There's simply no other sink available to deposit excess heat into! You can actively transport heat about the system all you want, but in the end, the entire system's heat sink must be external to the system, and accessible by some combination of conduction, convection, and radiation. In this case, the sink can only be external space, and that is only accessible through radiation. On top of that, the act of transporting heat against the direction where it wants to go in itself requires energy. So really you're trying to reject both the energy of transporting the heat along with the redirected heat itself. Since the temperature difference of the gas at either end of the pulse tube is relatively constant, the theoretical minimum temperature (with no parasitics) of the cold end is the temperature of the hot heat exchanger (HHX) minus the achievable difference in gas temperature at either end of the pulse tube. Any steady state heat load present at the cold end increases that minimum temperature because the cold gas in the pulse tube has to remove that heat load from the cold end through the cold heat exchanger (CHX), and so the gas must be colder. The heat of operating the pressure wave generator is generally rejected into the HHX, or an additional supplementary heat exchanger (aftercooler) placed earlier in the system, but can diffuse into the pulse tube gas, or present a heat load to the HHX and raise its temperature. Additional parasitic type effects basically just include all the conduction, convection, and radiation modes between parts of the system at different temperatures. For additional information, Ray Radebaugh is an authoritative figure on crycoolers and has written comprehensive reviews of the state of the art. He has also taught a short course at the yearly International Cryocooler Conference, though I'm not sure if that sort of thing is going on this upcoming year.

[@OnlyEdandTheAlmost]

So...not really "insane."

[@rljpdx]

@@jasonyoung1622 yeah thanks. in my research I did discover these points you've made and your additional explanation is just good to know.

[@trutharrow5311]

The graphics is incredible. The attention to detail was almost as good as the heat shield

[@phizc]

Most of them. I noticed some with errors, like the mirrors not sharing a common curvature like in the first shot, and a mirror with tons of fingerprints late in the video. Generally though, it looks great.

[@jacktheflash8478]

@@phizc interesting

[@NorthernChev]

Add Graph [6] at 8:50 to the pile of mistakes. Sunlight strikes the convex side of the sun shield not the concave side. Graph [6] is wrong. Unfortunately there are quite a few mistakes in the animations and graphs this round.

[@NorthernChev]

(12:26) Trajectory Maneuver incorrectly says, “JSWT”…. The errors just keep comin’

[@TheRealFlenuan]

Well, except the one showing the moon's shadow. Inaccurate, out of place and frankly embarrassing.

[@rogerwilco2]

The Mid InfraRed Instrument (MIRI) was made by colleagues of me at my job at Astron in the Netherlands. This instrument is truly international in scope.

[@IIISentorIII]

Roger Wilco my friend and Ten-Four!

[@Wildflower-xe8sn]

Indeed.

[@bishop51807]

NASA is giving countries & organizations that donated equipment and money, time on the telescope. I wonder what will your people look at?

[@realtimestatic]

Can you give them greeting for me if you see them some day and tell them many people like me for example heavily appreciate the work they do

[@HaggisMuncher-69-420]

Thank you for helping to advance the white race

[@chamous100]

The level of engineering and physics required is insane ! huge respect to all the people working on this project.

[@mrmemer5520]

I am really confused plz help me. If lets say we went too far away from our earth where the light reflected by earth is not travelled yet, if we go to that far away place and use such a high quality telescope we will be able to see the dinasoures. The logic is we only see things when light enters our eye in such sense if we go to that place where earths lights is not yet reached we can see the past!!!!!!!!!!! Can anyone tell me where is this james webb telescope going to spend its time

[@fstcsvn]

@@mrmemer5520 hhaahaahaha. no, thats not how it works

[@realfangplays]

@@mrmemer5520 We can't go faster than light as far as we know

[@lifeisneverthesame910]

China can build like this one in just 5 years.

[@dusansilni3956]

@@mrmemer5520 IF we are able to teleport INSTANTLY to the place lets say 1 million light years away and we observe the Earth we would see what happened 1m years ago

[@hirvielain9013]

Excellent video, really enjoyed it! But a few minor mistakes to point out: 5:22 You say "83 °C" but have written "-83 °C". I assume it should be +83°C. 18:56 Infrared is (unlike you said) lower _frequency_ than ultraviolet and gold reflects lower frequencies well. You're thinking about _wavelength_ .

[@p_06k]

also kelvin isn't a degree scale 13:34

[@hieronymusnervig8712]

Isn't the boiling point in space much lower though? So maybe he meant that -83°C was close to the boiling point of water in space?

[@GidionG]

I expect the correct value is actually -83 c

[@Astor_V]

@@GidionG He did say it would be nearly hot enough to boil water, so I expect +83°C (as he said).

[@SeaJay_Oceans]

"The Pulse Tube Cryocoolers" is a great name for trendy indie techno low fi neo jazz band...

[@fflaguna]

Real Engineering, whoever did your visuals for this episode was EXTREMELY talented and clearly understood the subject matter! Keep using this person!

[@FifinatorKlon]

pls don't use the person, continue to cooperate with them lol

[@noneofyourbeeswax01]

Either the visuals or the narration is wrong @5:23.

[@z_polarcat]

NoneOfYour Beeswax visual is wrong, because water boil at 100c, +83 is close to that

[@VariantAEC]

@@z_polarcat Lol for real somehow I missed that. At 19:04 he missed stated that lower frequencies of visible light aren't reflected well by gold... the reason to go with gold and the graph on screen beg to differ with what was spoken.

[@BradBozarth]

@@VariantAEC lower frequencies (longer wavelength.. Towards red) are closer to 100% in the graph. Looks right to me. Also, water boils at lower temperatures at lower pressures, so at near total vacuum, -83 c is correct. Edit: never mind, I see that his audio doesn't agree with these two points. Visuals seem right though.

[@edkostiuk5148]

NASA, after all these years I still get excited watching your explorations. As a teen, I sat in front of a black and white and watched as the clock ticked down with Shepard in Freedom 7. Then Glenn, followed by the other 5 Mercury pilots. Then Neil took the first step and we thought this is it we are reaching the stars and there is no stopping us. Years later I was part of the Search team in East Texas praying every time we found the astronauts. Congratulations to all the men and women around the world that made history with Webb.

[@Nolys-bk4kd]

Oh my, you were around for the very first American in space? That's incredible.

[@ElementofKindness]

This is the most extensive description I've seen about this telescope, and I am absolutely blown away by how many challenges that it must address. If successful, it is definitely one of the top wonders of humanity.

[@yrobtsvt]

The use of the massive vacuum chamber really puts it in wonder of the world territory. We are pushing ourselves to the limits of engineering in order to take the most accurate photos of millions of light years away. The scale of engineering is like the imaginary faster than light spaceship in Carl Sagan's Contact film but real.

[@bennemann]

Check out the video "The Extreme Engineering of ASML’s EUV Light Source" from the channel "Asianometry" for another machine that successfully addresses a ridiculous number of technical challenges.

[@Ottee2]

Absolutely. This is us at our best. Congrats to the JWST team on full deployment.

[@thefourcookies123]

I’m from the future and it worked

[@JM-yq9gd]

Except it's entirely fake LMAO

[@WonderMagician]

A staggering feat of engineering. The teamwork on this enterprise is an inspiration of what human beings are capable of when working in cooperation.

[@davealmighty9638]

It isnt worth celebrating until it actually works. Right now, they can't even set an accurate launch date. It's all just a bunch of "maybe's".

[@ethorii]

The smart mature people anyway.

[@mr.pocket575]

A great story about human cooperation can be read about from how the Chinese fought the Japanese in WW2. The shit they did I didn't think was possible.

[@jtestaccount2431]

@@davealmighty9638 with all due respect Dave, the only video on your channel is a video of a raccoon with rabies. Your cynicism doesn't make you look unique or special it just makes you look like a clueless asshole. This telescope has been in development since 1996 and has struggled for funding throughout, only now are they finally able to attempt a launch after years of perfecting the design, I don't think it's surprising at all that they don't give a single shit if Dave Almighty (or similar) gets annoyed when they push the launch back to ensure everything goes smoothly. I find it incredible that people can look at the astonishing work these people are doing and say "It's all just a bunch of "maybe's"

[@goingbonkerswithmyhonkers9374]

Yep. Engineering people to go with this farce and take them for all they goat. A buncha malarkey. Money laundering.

[@IsMaski]

After you talked about the points of failures, I'm absolutely terrified for the launch and the coming days where the JWTS unfolds itself. Fingers crossed that everything goes as planned and the decades of hard work from the engineers all pays off.

[@Tom-gn2gb]

Didn't even work on it and I'm extremely nervous, can't imagine how the engineers feel.

[@Poppa_Capinyoaz]

Most likely ending up an expensive paperweight.

[@westnblu]

@@Tom-gn2gb The thing is unlike the Hubble telescope the James Webb telescope wont be afforded any repairs or maintenance if the need arises. The space shuttle program is no longer so it needs to go right the first time and for a long time.

[@Ryan-eu3kp]

@@westnblu oh god can you imagine if something stuffs up!! Lol I'm just picturing the press conference now. I'm not religious but I will pray for a successful mission!!

[@ala0284]

@@westnblu even if the space shuttle was still operating, it most certainly wouldn’t be capable of going 1.5m km from the earth, considering that thats 6x further than the Apollo spacecraft went and that the furthest from earth the shuttle has ever been is 600km

[@santoshkadam8431]

Human determination has no no boundaries. From being mere hunters to creating super complex james web telescope, progress is unbelievable.

[@sadyaneem]

You assume that we today are the most advanced we have ever been in our existence.

[@josephphotography4127]

progress for who?

[@theenjeneer2792]

@@sadyaneem because we are… i dont recall reading about the romans taking selfies on there hand held supercomputer whilst taking a ride on a 100 meters long flying machine traveling around the world

[@sadyaneem]

@@theenjeneer2792 an assumption based on your own ignorance. We have many relics of ancient civilisations that are wonders til today. I've never seen a black Swan before, so hence it must no exist.

[@tristandawson6417]

​@@sadyaneem Occam's razor solves your theory. Occam's razor states that the theory that requires the fewest number of assumptions is typically the one that's right. As of right now, the evidence suggests that we are living in the most technologically advanced segment of human history. Does this mean that it's a guaranteed fact? No. But, that conclusion is the one that requires the fewest assumptions and therefore, is most likely to be correct. For example, is it possible that you simply popped into existence last Friday with all of your knowledge and memories preplaced in your mind? Yes. While technically possible, this would require MANY assumptions and is also impossible to DISprove. Therefore, Occom's razor comes in and says "no, that silly, don't even consider that as a possibility."

[@celtickitty6547]

As someone who studied astrophysics in the late 80s - early 90s, I'm in awe of how far things have come. Thank you for an excellent documentary.

[@jex-the-notebook-guy1002]

@seeni gzty what does it cost a billion too cause they just "need" more money?

[@Biden_is_demented]

Scientists were pressing for this to be built, because they had the hots for martian women. Everyone knows they were drooling in expectation of observing martian ladies doing topless! Space porn, dude!

[@jex-the-notebook-guy1002]

@@Biden_is_demented you deserve a like

[@godsbeautifulflatearth]

You realize this is all CGI, right...?

[@nasirtahir7595]

@@godsbeautifulflatearth bro 💀💀💀💀💀

[@desoL8d]

The amount of engineering technology being put into this telescope is incredible. Even the telescope design and mirror configuration are unlike what we have seen before. Kudos to all the scientists who collaborated from conceptualizing, to design, and to final application of this human tech.

[@irismiranda1225]

A mind blowing engineering marvel.

[@GoingRampant92]

Sad part is; It's gone largely unnoticed by the general populace.

[@rea280]

@@GoingRampant92 it hasn't. Literally check wallstreet, NY or any major news distributor.

[@ArisIndigo]

And Kudos to Doja Cat

[@stevejaenghan5589]

My dad worked at Goddard from 1980 - 1992 . He was was the communication telemetry engineer . The internet made him become a dinosaur . They were contractors , Ford Aerospace were his last employers .

[@gorstl]

I can't imagine the stress of "things that can go wrong", or the level of excitement for the team if this goes completely as planned

[@aaaaaa-hh8cq]

But I think they're not concerned at all They won't risk for a big project like this They have anticipated and predicted everything

[@aaaaaa-hh8cq]

Unless Something unexpected happen Like if they missed sth in their calculations and predictions And that's when it gets interesting

[@2112Fade2Black]

Well if something goes wrong like with the Hubble they have no chance to go out and fix it...

[@drean_3k]

it will do more than enough even if it dosent go completely as planned

[@clickpause8732]

@@aaaaaa-hh8cq I believe that’s what the original comment was referring to, the worry of failure.

[@ScragNath]

As a steel fabricator, Swinging my 22 pound long shaft hammer accurately was always a proud achievement. This takes engineering to a different level. (Hope you appreciate the light hearted comment). Well impressed with this presentation.

[@suntzu1409]

""Swinging my 22 pound long shaft hammer"" 👁️👄👁️ Are you a dinosaur or something

[@ScragNath]

@@suntzu1409 Dinosaur? If being a true boilermaker is that then yes.

[@williamhawkins6504]

I call my 20 pound hammer PAT, my Precision Alignment Tool

[@ScragNath]

@@williamhawkins6504 How did you lose the 2 pounds? Mine was a 22 pounder.

[@williamhawkins6504]

@@ScragNath I don't know, the hammer just says 20lbs on one side and 9.1kg on the other must be a country difference, I am in Australia.

[@jonwally2002]

Great video a masterpiece of explanation! I think there is a typo at 5:25. You mention the heat from the sun could boil water on the telescope, but the screen shows -83'C which is below freezing.

[@RealEngineering]

Yeap, typo

[@kimjong-un2318]

@@RealEngineering don't worry man, I'll pretend that I haven't seen it!

[@leiag201]

@@kimjong-un2318 ya I saw it too

[@Samcanplaymusic]

To have put out such a well-researched and well-produced video with only such minor errors is quite a feat of its own. This is your best video yet, Brian. Well done.

[@RealEngineering]

@@Samcanplaymusic one or two minor errors. Said degrees kelvin too, and mixed atomic number and atomic weight, but nothing that actually impacts the video. Just annoying mistakes that could have been avoided with more fact checking passes

[@Tiger_Li]

The sequence at 13:23 is beautifully done. The animators didn’t have to put the reflections of the assembly room in, but they did, and those little things add so much to the video. 11/10, Keep up the awesome work!

[@theglobalwarming6081]

And it isnt even noticable for the majority of people. Kudos to them

[@aadityamangalam394]

27:50 After hearing the news about how Webb's life will be extended because it used less than required fuel for the insertion burns, watching this makes me happy that Webb will continue beyond 10 yrs. It was all thanks to the precision of the Arriane 5 launch, so good job ArianeGroup!

[@AaronChristopher869]

that's amazing! it makes us all happy xd

[@aadityamangalam394]

@@AaronChristopher869 Yup, it's amazing and the best part is, it was unexpected, so hearing about must make the team who worked on it extra happy!

[@chilliecheesecake]

I am gay

[@Ottee2]

@@chilliecheesecake , I think we are all feeling gay after yesterday. 😉

[@rohan7382]

@@Ottee2 what the 🤨

[@cQ2DHPavXTqemm9Vsbgi4TV7x]

this is absolutely insane. The sheer amount of precision and ingenuity it takes to accomplish something like this.. Imagine if the defense budget was directly towards aerospace engineering..

[@licinian4322]

then they would probably not even be able to run an aerospace company due to not being defended. I really wish america wasnt built the way it was, the only thing that country has to keep it ontop, is their military strength. Without it, they cant do anything like this

[@darinherrick9224]

@@licinian4322 What kind of nonsense is this? It doesn't take a trillion dollars a year to defend a country. LOL

[@licinian4322]

@@darinherrick9224 I literally dont care what you think. If the US scales back their military, other countries are going to take a lot more steps towards another world war. Like I said. I wish the US wasnt built on the foundations, laws and such that make it the way it is today. but the US Military is the ONLY thing that country has going for them. They scale it back at all, and it might be game over. Plus wtf do you or I even know about military spending? dont act like u magically know what it takes to run a military

[@timthetiny7538]

We'd be doing broadly useless shit on a way bigger scale?

[@reedraikes7471]

​@@licinian4322 feed the death machine and the military industrial complex

[@Nighthawkinlight]

Nice job explaining the thermoacoustics! I'll have to look more into the design used here for the next thermoacoustic project I take on.

[@phizc]

Cool! I was going to the comments to inform people that you had made several videos on the topic. Guess I won't have to :-)

[@tobeforgottenisworsethande8995]

I have an idea for it. Send yourself beyond low earth orbit. If it can be done. Hasn't been done yet

[@jason4547]

Oh I see .... You're one of those "soapbox" kind of people ! Yes we all see you. Now go away !

[@phizc]

@@tobeforgottenisworsethande8995, @Chopper use the report function. Also if you're going to reply to a post, reply to the post itself, not the original post. I'm assuming you both replied to Yuna, not NighthawkInLight. As it is, it looks like you're angry at NHIL which doesn't make sense.

[@ayyadew]

Wait for that

[@DashFlashTheLife]

"Pulse tube cryo-cooler" We've finally reached the point where real life has become science fiction. The first photo this telescope takes will no doubt be one of humanity's greatest achievements, hats off to a long and successful life from this marvel of technology!

[@HonorableBeniah-A]

This project needed 10X more diversity. I saw a LOT of white people working on it.

[@GarretTheGussy]

@@HonorableBeniah-A you know skin color isn't ethnicity right? There are plenty of white Cubans, Israelis, Pakistan, Indian, Slavic, Mediterranean, and others that appear *white*. Might wanna look in the mirror next time you judge people solely based on skin color.

[@orbtech6282]

@@GarretTheGussy Not even that. The fact that they had the audacity to drag RACE into a decades long astronomy achievement is a good example of what society has become.

[@briannem.6787]

@@orbtech6282 Beniah had a point. It's important to get people from different backgrounds working on things. If all groups that live in your country aren't represented in things like this, there's something wrong with your country!

[@briannem.6787]

@@GarretTheGussy I suppose so, but there is still lacking diversity in scientific communities. I feel like diversity, even considering your point, isn't up to scratch.

[@donbradley2677]

A huge salute to all who have been involved with this project, from the insanely intelligent engineers to the person tasked with cleanup. My hat is off to you all and good luck in the successful deployment.

[@rajendrasatale7281]

👌💐

[@vince_unemployed]

giving credit to the bright minds who is solving through every equations and experiments that made this gem

[@ArisIndigo]

I also thank Doja Cat for Morale

[@TheCaptainRex]

Must not forget, that as a society - There were cooks to feed them, janitors to clean, clothes and supplies to live. A lot of this is outsourced, internationally imported and exported goods. This is the culmination of the WORLD. Not just NASA. Not just the US. If we truly want to continue this journey and dream into space... it starts as an Earth Collective.

[@loturzelrestaurant]

NASA is criminally under-funded. Cant 'we' do 'something' about this?

[@invernomuto7550]

Thank you for this. Sometimes, looking at all the suffering caused nowadays by sheer human ignorance and greed, one comes to believe that idiocy is almost the standard human condition. However, thinking about people like Mike and all the amazing experts on the Webb and Ariane team working to push the limits of science with sheer passion and humble intelligence makes me proud to share with them and all of us that same fundamental nature that turns all of our eyes to the sky on a clear night.

[@miaomiaochan]

Beautifully put.

[@realtimestatic]

Things like this make me proud to be a human again honestly

[@sshake4723]

Ironic considering the name of this thing in the midst of the current climate of lgbtq+ rights in the states. It should've at least been mentioned and it's a shame it wasn't

[@risingstar1309]

And destins dad!

[@rosskrt]

@@sshake4723 what

[@Woef718]

It is really amazing how well qualified these engineers are in their job. Compare this with politicians managing a country lol.

[@lagrangian143]

cheems we should've launched you on that rocket

[@Woef718]

@@lagrangian143 yos

[@toriless]

R vs D

[@thomasjamison2050]

Three men are waiting to be executed by the guillotine. A Frenchman, and Englishman and an Engineer. They put the Frenchman in the device and let the blade drop. It stops halfway down. 'Ah hah!" says the Frenchman, by law you can't try to execute me again, so I am free. He leaves. They put the Englishman in the device and drop the blade again. It sticks. "Ah hah!" he says. I also speak French and I heard what the last guy said. Let me go," and they do. Finally they put the engineer in the device, pull up the blade, but just before they trigger he blurts out "Wait, I see what's wrong!"

[@ASLUHLUHC3]

Yeah our political systems are still a complete joke

[@Angl0sax0nknight]

I see myself as a good technician (mechanical and electrical) but the shear mind blowing engineering that went into this spacecraft is beyond me by many many orders of magnitude. I pray that it works without any major problems. I hope to marvel at the pictures and information it shows us about the universe.

[@Alphadestrious]

Shit, it's incredible what the best teams in the world can accomplish. Most incredible piece of engineering ever

[@ElBach1y]

it's pretty insane

[@ZoeSummers1701A]

Pray?! Really?! I'll put my hopes and confidence in these experts.

[@WiseWik]

@@ZoeSummers1701A well if it's worth praying for something, this would be it.

[@jimsteen911]

@@ZoeSummers1701A your reaction at a simple concept - or even a saying - like praying shows how some atheists are just bitter ppl who hate God so much they've traded him in only to worship men and science. All require faith and assumptions making. Don't worship at the alter of vanity. Don't be an ideologue

[@DeluxeRyan]

The perfection these scientists have to achieve gives me such anxiety. Huge respect to all involved

[@sewergvtzz8298]

This is absolutely life changing, many don’t understand the sheer importance of how delicate making things like this can be! Not only will we be able to see things better than before, we will definitely be discovering much more than we could ever imagine. How exciting, I cannot wait until it’s placed in its final destination, I believe that all will turn out well. Excited!!

[@IstasPumaNevada]

Other than "everything JWST has to offer", heheh, I'm specifically excited for 1: a two-week exposure like the Hubble deep-field, and 2: exoplanet research.

[@akmalbruhaha4658]

It changes nothing on my life and yours.

[@alphacoder3822]

Reminds me this quote " One mans Magic is Another mans Engineering " As an Engineer myself it facinates me how far we have come as a civilization. Its all curiosity and a Curious Engineer with bunch of other curious engineers can do wonders. Proud to be part of a fraternity that silently spins the wheels of this world.

[@TheStockwell]

@Black_No_Sugar The US military burns through $10 billion *every five days* - and you're bitching about the Webb telescope? Your selective complaining needs to be better focused, you big ol' goof. You're welcome. 😸

[@tacorito1809]

is that even a quote?

[@realtimestatic]

I haven’t decided for a job yet but engineering and creating future technology for space exploration for example seems like such an interesting job to do. Way better than working 9 to 5 at some store or something. You are literally shaping the future for all of humanity

[@bertholtappels1081]

You consistently make fantastic pieces of content, and this is your best one yet. I’m happy you dedicated it to the project that deserves it most.

[@AlbertaGeek]

Wow. I was always impressed by the James Webb telescope, but until now I had no idea just *_how_* impressive it was.

[@churblesfurbles]

For 10 billion it better be impressive.

[@erikhendrickson59]

@@churblesfurbles That's chump-change for the U.S. government. Especially when it's being used to literally unlock the secrets of our universe. Instead of, ya know, foreign wars and fossil-fuel subsidies.

[@churblesfurbles]

@@erikhendrickson59 Nothings chump change, we are broke. The secrets being unlocked are of questionable value to those who do not even understand their dysgenic society has no future.

[@BoleDaPole]

Let them live in their little dream world where the government actually cares about its people and solving the fossil fuel crisis..

[@mulanomula]

@@erikhendrickson59 NASA gets jack shit from the government tho. more of their funds are spent on war related shit. so it isnt really chump-change for nasa.

[@jonaslken5383]

When I watched this for the first time, it lit a spark inside me. Now a month later, we are going to write a text to inform the reader about the subject. I chose this to be my subject, and I realize now how well made this video is. Thank you, now you have made me a space enthusiast.

[@hiard10]

This is mind blowing. I love how you've put in a lot of research into this.

[@gbt722]

People who put out content below this standard, need to take a look in the meer

[@slevinchannel7589]

@@gbt722 I talked with some Atheists and we came to an interesting Result. Atheists dont have this 'inherent desire to spread their word', which of course is UNDERSTANDABLE buuut it also has negative side-effects, evidend by Atheist-Channel generally being smaller than Church-channel. So i think we should all self-reflect and ask us if Atheists shouldnt recommend-each-other more often stuff. So i offer here and now some Atheist-KZbinr, and on that note, also Science-Channel.

[@synthlord6575]

​@@slevinchannel7589 Whatever you are trying to express in your comment there has been completely lost due to your inability to use the English language.

[@AndyZULUL]

@@slevinchannel7589 f is this nigga talking about ☠️☠️☠️☠️☠️☠️

[@slevinchannel7589]

@@AndyZULUL Haha, what a crin-ey answer is that?

[@BJamesThompson]

I just asked my family how they felt about the Webb telescope launch...and... They didn't even know it existed 🥺 I'm just glad to have this little corner of KZbin to see that there are other people like me in the world ❤

[@Wildflower-xe8sn]

It's a big deal in my family. My husband spent 8 years on this project.

[@raglandasir6885]

@@Wildflower-xe8sn Congratulations

[@newdhirajkolge]

There u go little Sheldon.....🤣🤣 Please also keep in mind there exists a Social Intelligence and spectrum of non-verbal communication which is way more complex than any documented science so far. AND the guys who concur it, rule the Roost which also includes the who's who of PhDs. They do appear to be stupid bookwise, but the neurotypicals have mastered the art of guessing and camouflaging the true intentions.

[@realtimestatic]

I talked about the first amazing image with people at my school

[@jacobfredman9442]

They will def be knowing it soon like the hubble telescope as it gets more pics and science books start to use it.

[@myentertainment55]

Standing applause for this video. Among best and deepest dives on a subject I've seen (and still understandable for casual but curious and patient viewer). Monumental effort.

[@buffytherussian]

It makes me so glad to say, that as of June 6th 2022, this telescope is successfully deployed, and will transmit its first official images in just over a month from now, July 12 2022. Human engineering is amazing.

[@IstasPumaNevada]

And the pictures are amazing too! Straight away!

[@theogqueenrose]

I appreciate your dedication to teaching the world about the new projects being taken on by our space agencies. Best of luck with the channel and thank you for the in depth review of the James Webb Telescope.

[@justeunfan3364]

Luckily, the rocket functioned well and at the time I wright this the JWST is heading to L2, I really hope everything will go well, its such an insane piece of engeneering ! I hope I will work on projects this big later...

[@ArisIndigo]

Thank God, It really is nerve wrecking especially for people who spent 10 years being a part of the project.

[@caedmonswanson2378]

This video is amazing. The graphics are stunning, animation and editing incredible, and best of all the content is world class. I’m 18 and going into college for computer engineering next year, and I have to say your videos have inspired me so much over the years. Thank you for introducing me to all these amazing engineering topics, they’ve encouraged and taught me so much.

[@masterdementer]

I was probably 10 years old when I first read about JSWT in a book. Now I'm 20 and thrilled to see it finally made it to space. And the the images it has sent is truly amazing.

[@matthewpost1476]

Small correction - at 17:57, beryllium should be described as having atomic number 4, or atomic mass of 9.012182, (9 within an engineering approximation). Atomic weight [mass] of 4 would be a classic 2p2n helium atom.

[@iggswanna1248]

ok thx

[@TheOmniscientHuman]

🤓

[@thedrake2121]

great i can sleep now

[@us89na]

Wouldn't 2p2n make a +2 alpha particle? :) Need 2e's.

[@Goldsilver]

Just epic. Well done.

[@cbadshaw]

You know the elites love and hoard gold when they have to build fake satellites and coat them in gold - oops, they "blew up" on the way up. No reason to look into where the gold went!

[@deadpixelindies]

@@cbadshaw Did you even watch the Video? The amount of Gold used for the entire Mirror is practically Nothing. The Gold is worth less than a few thousand bucks on the mirror 😂✌

[@ThomasKundera]

@@cbadshaw : You're very naive.

[@FelixMaterial]

@@cbadshaw 🙄

[@derederekat9051]

@@cbadshaw 10 billion, imagine how many burritos that is, just crazy!

[@thomasgieseke9865]

As excited as I am about what mysteries the Webb Telescope will reveal about the universe, I am at least equally excited about the developments in engineering and materials used in the making of the telescope itself. I wonder if we will be see cryocooler technologies incorporated into our kitchen refrigerators and our home air conditioners. I’m wondering if we will see any of the technologies used in the kapton sunshield used in insulation for our homes and other buildings. It is always exciting to hear about these sorts of scientific developments and think about their applications in everyday life.

[@Martinit0]

Well, our typical emergency blanket use basically the same technology as the Kapton sunshield - only the carrier is different: en.wikipedia.org/wiki/Space_blanket

[@gladonos3384]

"I wonder if we will be see cryocooler technologies incorporated into our kitchen refrigerators and our home air conditioners." I mean... Why? The current technology works and is dirt cheap. Chemists & Engineers might be able to use it in labs but I doubt they will be in every home. Too expensive.

[@THE-X-Force]

@@gladonos3384 The thing that you used to create and send that message was either impossible or way too expensive only a few decades ago. There are cheapo knockoff watches you can buy that have more RAM and computing power than was used to put men on the moon.

[@bankaltthree9139]

@@THE-X-Force again, the question would be why would you need it? unless its more efficient, or cheaper to produce its not going to needed, the reason its used in this telescope is because they needed to minimize vibration, that's not a concern in home cooling. aerogel has been around since the 1930's and is a great insulator... but hasn't caught on because how its made is expensive and brittle, and while its gotten cheaper, its unlikely to ever be mass produced and used in peoples houses. you cant assume something will be so in the future just because something else happened like that.

[@UsernameXOXO]

@@gladonos3384 Because if we can do it 1 way and the other way is better, and is developed for other industries first (like so many technologies) then we will stop doing it the old way. Computers were never gonna be in peoples' homes either.

[@ronkirk5099]

Boldly going where no telescope has gone before to see back in time to the very birth of the universe. Heady stuff and of particular interest to me as a retired mechanical engineer and Astronomy buff. Awesome video! Many thanks.

[@IanZainea1990]

The thing about Webb that always blows my mind when I see it is that all the Hexagons look like 1 single mirror (which is the point). Whereas on the one model you show, you get the "bug vision" where each hexagon is slightly off from the others and so you get 12 different images instead of 1 unified image. And that, is brilliant.

[@aemrt5745]

It is a really cool breakthrough. Until recently, telescopes were a single piece mirror. The hexagon technology has been used on ground based telescopes since the 1990s, resulting in a size breakthrough. The GTC at a whopping 10.4 meters! Get this, they are building the ELT in Chili. It will have a 30 meter diameter and have 798 hexagonal segments! Wow!

[@toyfreaks]

James Webb just separated from the launch vehicle shortly after 6:30 this Christmas morning! Congratulations to the team of smart, SMART people who labored for years to accomplish this!

[@przemog88]

@@dawn-blade Are you high or something? Atheism is not the same as "science". You clearly don't know what you are talking about.

[@C0smicun1vers3]

@@przemog88 ikr

[@invisibleimpostor299]

@@dawn-blade you joking right?

[@Mor-tis]

@@invisibleimpostor299 what did mans say?

[@singulariite]

@@invisibleimpostor299 what he say

[@arupkuet]

Insane engineering truly. And tons of respect to real engineering channel for describing the whole system quite easily.

[@lifeisneverthesame910]

India can build like this one much cheaper.. 100 millions dollar is enough for them.

[@mamoet1283]

@@lifeisneverthesame910 how could you tell that ?

[@weasle2904]

​@@lifeisneverthesame910 You don't realize how silly you guys look by making such ridiculous claims lol. You guys still are struggling to get toilets, and piss in the street and your your own rivers that you drink from.

[@OMEGA521]

@@lifeisneverthesame910 pointless claims with nothing to back it up lmao

[@pauljnellissery7096]

@@lifeisneverthesame910 just because India made a Mars mission cheaper it doesn't mean everything has to be cheaper.

[@jeffreybreitbart8578]

Thank you to all who have devoted their time and talents to this awe-inspiring project.

[@LukeGoodsell]

Great video. However, a small quibble: at 4m55s, the graphics show the Webb remaining entirely in the shadow of the Earth and unexposed to the sun. This would actually be pretty disastrous for the Webb, as it would take a lot of fuel to remain in such a tight orbit around L2, and would also not have enough light for the solar panels to generate sufficient power for it to operate. In fact, the Webb will trace a large eliptical orbit around L2. By design, it will remain uneclipsed by either the moon or Earth for it's operational lifespan. This is so that its exposure to the sun is constant and the temperature won't undergo large changes, as is the case for satellites in orbit around Earth.

[@morrischen5777]

This correction should be seen ^^.

[@smittymcjob2582]

Why does it need to be at L2 behind Earth if it needs sunlight? Shouldn't it be at L3 or L4 facing away from light from the Earth but in direct sunlight?

[@smittymcjob2582]

Learned this on another video: If we go out to L2 and put up a big sun shield, a big umbrella, then we can block out the Sun, the Earth, and the Moon all at the SAME time.

[@LukeGoodsell]

@@smittymcjob2582 L2 offers the easier and faster communication (latency and bandwidth) than L3-5. L3 is especially difficult to communicate with.

[@smittymcjob2582]

@@LukeGoodsell not to mention 300 million kilometers away! (L3)

[@Jakerski]

This video was so entertaining. Those 30 minutes passed by so rapidly. Thank you for all the useful information. I can’t wait for the information we will gather in the next few years thanks to the Webb telescope and everyone who worked on it

[@chancebutler6472]

its all lies man... cmon now... we all need to do a little thinking for ourselves once in a while... for the love of god..

[@mikomarael1642]

@@chancebutler6472 how is that a lie?

[@Jakerski]

@@chancebutler6472 if you live your life thinking everything’s a lie, that’d be a pretty miserable one, don’t you think?

[@goldenageofdinosaurs7192]

Yeah, it’s going to be pretty incredible. Right now (Jan 3, 2022), they’ve just tensioned the first 3 layers of sunshade & are going to finish the last two tomorrow.

[@toriless]

Yeah, but no date until summer.

[@DasnarkyRemarky]

Just like everyone else, I'm awestruck at the sheer magnitude of engineering, innovation and planning that has gone into this. Bravo!

[@ThePhilosophicalOne]

This is actually quite pathetic.... Look up the moon landings. We went to the moon 6 times within 3 years! From 1969-1972! 😁

[@zombiegun71]

Man I remember reading some space magazine when I was young. Simply amazing technology. Cost overruns and delays aside, this is going to give us the largest jump in our knowledge of space in a long time.

[@mostafaelshafie4550]

It is fascinating to see somebody have the drive and dedication to work on one project for 25 years. You are an inspiration.

[@rodeoclownobama5796]

this is just stupid, The Webb telescope was not always planned to be a megaproject. It was originally estimated to cost $4.96 billion and launch in 2014. But serious mismanagement and under-resourcing during critical early planning stages caused the ambitious spacecraft to fall behind schedule. After NASA restructured the project to launch in 2018 the total cost increased to $8.8 billion. In the intervening years, the program struggled to address serious technical problems, further delaying the launch to 2021. This final delay added yet another billion dollars to the total cost. do some research

[@LucidDreamn]

Imagine how long the pyramids took early humans to build

[@autohmae]

If you are chosen to be part of this you would be crazy not to want to work on this. Other than the anxiety of failure.

[@sonny9493]

The satisfaction he will feel when the first images are beamed back. And rightfully so.

[@victorbarbulescu8794]

The explanation with detecting the light projected on the moon by a 5W flashlight and the telescope being able to detect a light source 1/20th of that? Mindblowing and then some... Very good video. Thank you!

[@bentos117]

not projected, but located on moon

[@victorbarbulescu8794]

@@bentos117 indeed. Thank you! Still massively impressive. Can't wait for the launch!

[@adamsohn0604]

Fantastic work ! Kudos for compressing years of work and technology into just a 30-minute video👍

[@Plutonium292]

What? this is a 30-minute video? damn I thought it was like 5 or 6 mins

[@Seriouslyfunny1]

It really makes me wonder what a human mind could actually do... Starting with counting numbers, adding and subtracting them to something as advanced as this satellite... It's frikkin' awesome to just imagine the leap...

[@ChristianPauchet]

I did something really weird when I first heard of this mission and its telescope (they called it the Hi-Z telescope concept), I decided to buy a bottle of Dom Perignon to celebrate the day this amazing masterpiece of engineering launched... That happened back in 1997, I've moved several times since then, to different cities and countries and I still have this bottle with me. I still can't believe this Friday I'll have the chance to hopefully open this bottle and cheer for this mission's success. This brand new eye we're placing at 0.010 au will change everything and I'm excited beyond words, my wife is close from divorcing me LOL, I've been like a kid jumping with joy. Thank you for explaining with such accurate detail how this beauty was made and what it be capable of giving humanity.

[@actualamateur149]

This is awesome. Thank you for sharing this.

[@TheDasHatti]

Seems like u have to spare it one more additional day :) Enjoy it!

[@GetMoGaming]

🖖

[@alandpost]

You probably should wait until they get the instruments working

[@ChristianPauchet]

@@TheDasHatti Not very happy about it, I want this thing to liftoff ASAP, the bottle and the Ariane 5. 😂

[@ben.griffin]

5:23 Two things - the graphs shows temperature at -83C (not exactly 'scorching') and also the narration suggests that water boils at 100C, which is not true in space - water does not boil at all in space, it sublimates.. It only requires a temperature of -73C to sublimate in space, so any free water at L2 is certainly going to transition.

[@kkfoto]

That was a typo; it was supposed to be 83°C. The reference to "scorching" and boiling water was so that metric-impaired people had a clue about the temperature. It was not about boiling water in space.

[@guillaume8483]

I personaly took this as a joke, and I moved on with my life. Cheers ! ))

[@sriganesh_sharma]

So glad I'm alive at a time to witness the greatest of engineering marvels. Hopefully everything goes according to plan and the JWST will give us some breathtaking images.

[@HiiImChris]

I can't even begin to comprehend the absolute terror the creators feel when the rock launch starts. Just a small failure could literally cost billions of dollars, and more important, the combined 10's of thousands of hours invested by some of the most brilliant people

[@OoHouston]

I'm far from Engineering field, I would say I'm only an enthusiast about learning new stuff and a big fan of space, astronomy, astrophysics etc. and this videos is absolutely mindblowing just like the work done on creating J.W. Telescope itself! Explaining the unbelievable amount of work that was put into creating such an amazing tool for scientists as J.W.T. also takes a lot of effort and hard work, especially to make it understandable for people like me who is far from any kind of engineering fields! Great job! Appreciate it a lot! Thanks from Moscow, Russia!

[@stallion6805]

This mission is very important I hope everything goes according to plan and a big salute for the people who made this possible

[@rolbar9406]

very important????for wat?????for you?for as? important just for elite.....wake up

[@Bottlekap]

@@rolbar9406 that’s not even remotely true.

[@tascrphs]

I concur. I'm not an engineer and far from being an elite (grew up in hardscrabble DC), but i am aware of that often amazing technologies are borne out of colossal achievements such as this. It's unfortunate most of us are too dense to realize or appreciate the significance of this... but let Google or Facebook steal NASA's creations to redeploy in their commercialize tech that can now take photos from 1,000 miles away and these same klowns will be worshipping the grown these billionaires walk on. The internet is one of many examples of "big government" funded and developed technologies.

[@matthewkearney9044]

@@rolbar9406 Just another troll

[@starryepidemic2532]

@@rolbar9406 and that kids is why u need to focus on ur schools and colleges

[@TheHalfGlassFullGuy]

10 Billion for all this, that's incredible. Imagine how much we could do if this sort of stuff was given a decent budget...

[@Granolora]

I think they should have given it $40B. They spend $800B yearly on military, so I think they can afford to give $40B to a multi year project.

[@zarmadyl5038]

@@Granolora can I have 1 million of that? It's like change. Spare some change?

[@ebey6467]

@@zarmadyl5038 world doesn’t work like that buddy💀 u gotta earn it in some way

[@Joker-no1uh]

I mean NASA makes 60 million a day so idk why they complain about funding. Where is all that money going?

[@TheHalfGlassFullGuy]

@@Joker-no1uh Nice troll

[@maus9370]

You are producing quality videos. Time spend with these is worth every second. Just want to point out minor thing. 5:27 contains confusing information. I'm pretty sure you ment +83C not -83C.

[@stepdav]

unwatchable.

[@ilikedinos2369]

Im pretty sure hes right. Water boiling point on earth is 100C but thats only on earth. On mars its 2C so in space it could by different number like -80c but i dont know what it is to be honest.

[@dabossman3924]

@@ilikedinos2369 wait the boiling point of stuff CHANGES on different planets and in space???????

[@ilikedinos2369]

@@dabossman3924 Yeah this is because of the atmosphere on different planets and the lack of one in space. The martain surface has much less atmosphere causeing water to boil at a much lower temp. In space with what i am aware of exposed water starts to freeze at first and then boils away.

[@i-am-alxdz]

My hat is off to all the geniuses that worked on this incredible project. You absolutely ROCK!

[@skinife]

5:25 just an observation. It says -83C when it meant +83C

[@shadowcween7890]

yes

[@ImKairyu]

@@shadowcween7890 i had to rewatch it when I first saw lol

[@andymouse]

Yep.

[@xblinketx]

I noticed it too. Around 13:40 he also kept saying "degrees Kelvin" which is wrong.

[@TatsukiHashida]

@@xblinketx no he was correct there

[@garyklucken3487]

These productions always remind me of how special our species is capable of being. Thank you!

[@toriless]

and the comes along DJT to destroy it all!

[@jex-the-notebook-guy1002]

if you keep using the word species you'll fall for the alien hoax

[@Korkzor]

I haven't watched this video because I thought the title was a bit excessive but after watching it.. well. insane doesn't even cover it. This is on a different level than insane. Beyond imaginable even

[@MrRevertis]

An awe-inspiring achievement on so many levels. Space engineering seems punishingly precise, the tolerances are inconceivably small, and everything has to work absolutely perfectly, first time, or else you've just wasted $10bn, not to mention who knows how many human lifetimes of effort and expertise. With all the JWST videos I've been watching lately, I find myself coming back to the same question: how have they kept it clean while they're building it? I'm sure they do everything they can in terms of filtering the air, and cleaning everyone and everything that enters the room, but still, it's taken years - there must be a build up of dust and even oily/greasy substances eventually no? I'm guessing you can't just rub a chamois leather over your priceless beryllium/gold mirror.

[@Doctor_Yuri]

All the handling past a certain stage is done in a clean room environment, and parts are constantly cleaned with optical grade (or higher) alcohols or whatever liquid is necessary for a specific part. Lastly there is a process called "Bake Out" which is done in that huge chamber or others where you heat up parts in a vacuum environment. This evaporates all water and other organic substances and is a crucial part of the cleaning. Being clean and ESD safe is a big priority!

[@tommegg8486]

I just can't wrap my head around how incredibly precise engineering required to make this telescope work

[@sustainedbythecorpseofafal4733]

13:19 for your awareness Kelvin is not a degree measurement. Kelvin doesn't use degrees because it's an absolute temperature scale with a defined endpoint.

[@vx8952]

The engineering advances in this telescope are just incredible, It is a beautiful creation. I am very excited for the future of space research and travel. I cannot wait to see pictures from this telescope :)✨

[@IstasPumaNevada]

And the wait is over! Well, for the first ones anyway. There's going to be a LOT more amazing things from JWST.

[@Jacob_Spang]

I work with co2 lasers and watching this was so awesome. The similarities are there with optic manipulations but the advancements that have been made are absolutely stunning.

[@halfrhovsquared]

Then, hopefully, you noticed that the guy who wrote the script seems not to know the difference (and inversely proportional relationship) between frequency and wavelength. I’d argue that, if I didn’t mishear something he said, he also needs to brush up on orbital mechanics.

[@00XNine]

Thank you for explaining the L1, L2, and Legrange points altogether. I kept hearing L1/L2 and was wondering what the L was. I'm so excited to see what Webb brings us!

[@00XNine]

@Black_No_Sugar Oh, you mean like when they told us that there was a major issue with Hubble right away? Or the space station? Gtfo with your conspiracy drivel.

[@mitchellcline5738]

This is a simply astounding achievement. As the video began, I was just like, this is incredible and by the end I just couldn't believe what an incredible achievement this is. Almost too hard to comprehend for my simple brain. These people who made this should be so proud that they have made the most important advancement to mankind yet.

[@davidm6541]

It's only an outstanding achievement if it works.

[@pierreo33]

@@davidm6541 And you are? Someone who no one will remember when you're gone? Be quiet.

[@marksusername]

@@pierreo33 why the anger though David is right

[@gladonos3384]

@@davidm6541 The advances are significant on their own but yes, we need to see it work.

[@jkxss]

Even if it fails, any mistakes will be used to prevent future mistakes (e.g. the Hubble mirror being ground too thin @ 22:20). No need to make personal attacks.

[@delsinhays6421]

I keep comin back to this, stuff like this in books just drove me as a kid. This brings me back and I just love the information I just soak up over and over again.

[@A51Rene]

Video suggestion: Please do a video on the insane engineering behind EUV lithography and the most important tech company most never head of: ASML. The technological breakthroughs required to make EUV happen over the course of 25 years are the perfect topic for you to cover in your format.

[@zinedinezethro9157]

Knowing the sheer scale of the engineering and inventions they have to come up with, gave me a scale on why this telescope took this long

[@TheStockwell]

@Black_No_Sugar The US military burns through $10 billion every five days - and you're bitching about the Webb telescope? Your surrealistically ignorant and self-righteous complaining needs to be better focused, you big ol' goof. You're welcome. 😸

[@drdouggreen]

You said the beryllium has an atomic weight of 4. You should have said that it has an atomic number of 4. Be has an atomic weight of 9, which still makes it light metallic elements go. Only lithium with an atomic weight of 7 is lighter, but elemental lithium is much more corrosive. Nonetheless, this is an excellent video. Thanks.

[@leonardtramiel8704]

I came here to make this same comment. Thanks

[@us89na]

Machining beryllium metal objects is very difficult and beryllium fines are both toxic and carcinogenic. I think the portions of the video showing the oil flush of the saw and the material behind glass (in a glove box) may be legit. A big part of why Beryllium frame bikes are very expensive.

[@harmonyspaceagency1743]

You are great at explaining these concepts and its great you covered such a important machine so that we can better understand it

[@exoplanets]

Great video. We will finally know whether *_our closest exoplanet is habitable!_*

[@cme98]

And if its not? 😭 well so much for saving our own self-extinction & actually admit there will never be a place to relocate our undesirables & will forever be held back by Republicans & opiate addicted homeless people?

[@ASLUHLUHC3]

Or, already inhabited

[@astrofox2409]

The intro by itself is award-worthy. I cannot articulate how awe-struck I was when I listened to it for the first time. I still cannot get over how well-done it is. Magnificent work.

[@bharatsinghmalawat463]

For me, searching 1/120 nanojansky material is the most astounding part of this project and yeah cryocooler is also an awesome part of this, I hope that will become part of our daily life technology sooner or later

[@TheBlaert]

This is next level engineering really. The precision needed here is crazy

[@rogerhampton4592]

This is by far the best video I have seen on the JWST and I've watched a lot and listened to a lot of talks. Thank you for all the hard work in putting it together. Totally brilliant!

[@yigitbarancan5581]

Great video! As a side note: the correct usage is not "degrees Kelvin" but rather just "Kelvin" .

[@chrismathewsjr]

who gives a shit? people are dying of preventable diseases lol

[@ejwerme]

@@chrismathewsjr - I'm pleased that there are people knowledgeable enough to spot flaws in the presentation. It's those people who have the best insight in how to avoid dying from preventable diseases. No laughing matter, at least in my book.

[@dekelsb9382]

@@chrismathewsjr what does that have to do with what he said lol

[@constablebrew]

@@chrismathewsjr what does preventable disease have to do with a space telescope? Nothing. What does correct use of scientific terminology have to do with a space telescope? Everything.

[@andreilin113]

@@chrismathewsjr what is wrong with you

[@Mitch_Rogoff]

5:23 you say 83°C, nearly hot enough for water to be boiled, but the graphic shows -83°C, which one is correct?

[@mizbaibnbasher6269]

It's probably 83°C... I guess the one behind the animations messed it up.

[@Abhishek_Satasiya]

By far the most detailed video on anything I have seen so far! You guys are doing amazing work. Keep it on.

[@saturnv2419]

Fun fact, JWST was designed before Ariane 5's first flight, now it will become one of its last payload.

[@Boofatcha]

Interesting! thanks

[@o.s.2056]

Congratulations on a successful launch! Big respect to all scientists and engineers and a bunch of other people who participated in the development of this marvel of modern technology.

[@fistsmcnasty]

You started this channel a year before I started uni as a mature student. You have inspired me on my engineering journey, and now that I'm going into my last semester as a masters student you are exciting me to the possibilities that the future could hold for me. Thank you for your work and please continue what you're doing.

[@thatcamrykid126]

This right here is probably the most humble comment on KZbin. i applaud you kind sir 👏👏

Funny how multiple accounts left exactly the same comment.

[@sagarkardam9977]

@ most of them are bots

[@jasonhodes598]

Amazing video. The quality and effort is really amazing. Your content is incredible.

[@Gigabecquerel]

17:55 The atomic *number* of Be is 4, while the atomic *mass* is 9 ;-) Great video, I am so looking forward do the launch!

[@whatelseison8970]

Aww, ya beat me to it! Dang. It's not often I get to correct Brian.

[@tigershark2328]

Thank you for another awesome video!!!! Your videos have been one of the reasons I have applied to study Aeronautical Engineering at university!!! Thank you for being such an awesome inspiration!!!!

[@sierradelta6524]

I swear, the more I learn about this marvel, the more it BOGGLES my mind! I can't get over just what the human race is capable of. I am in awe of all of the work that has gone into this unbelievable piece of technology. Utterly amazing!!!