What You Didn’t Know About the JWST | Neil deGrasse Tyson Explains...

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Is the JWST more than just the pretty pictures it takes? On this explainer, Neil deGrasse Tyson and comic co-host Chuck Nice explore other technology featured on the James Webb Space Telescope and how its passive cooling works.
Learn how the JWST is more than just its pretty pictures. What bands of the electromagnetic spectrum can it see? Find out about William Herschel and his discovery of infrared light. How does the JWST avoid detecting itself? Find out about features to keep the JWST cool and infrared-free on another StarTalk explainer!
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Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
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0:00 - Introduction
0:45 - Location of JWST
2:06 - Low-Light Photography
2:36 - Non-visible Light
3:34 - Infrared Light
8:04 - Greenhouse Effect
8:32 - JWST’s Reflectors
11:36 - Closing Notes

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31 май 2024

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Комментарии : 460

@StarTalk Год назад

What's Your Favorite Feature of JWST?

@whoisthis4948 Год назад

The way the multiple lenses can calibrate individually. The original reason for the multiple lenses was of course to be able to fold and fit in the rocket but I feel like this gave an unintentional benefit. Say 1 of the lenses gets damaged, you would be able to recalibrate it to get the best possible image if its not completely broke. A weird pick for me though is the way they layered the pin holes in the sun shield so it wouldn't pop while ascending in altitude before leaving our atmosphere while also still being able to serve its purpose by blocking out all heat from the sun.

@JeandreCK Год назад

The mirror is a Masterpiece 💯

@nigelb7737 Год назад

It’s neat how the JWST can stay stationary, however I don’t understand how it orbits wjth Earth being 1M miles away.

@whoisthis4948 Год назад

@@nigelb7737 it uses Earths Lagrange point. Short term explanation, its where the pull of gravity from 2 separate objects become neutral. Like balancing a ball at the top of a hill which if moved in either one direction would cause the ball to roll down said side of the hill.

@smexyspexy2754 Год назад

You.

@gyozakeynsianism Год назад

"Unfit for vision," not "We can't see it" Chuck Nice is so awesome.

@edwinjoy9 Год назад

He's very nice ;)

@jumpingjoey9983 Год назад

Nice

@deanpearson3050 Год назад

might be his finest moment :)

@erdemmemisyazici3950 Год назад

Mosquitoes are going, "Newton was wrong..."

@gyozakeynsianism Год назад

@@deanpearson3050 There's more where that came from!

@Vincent-2057 Год назад

"unfit for vision" the way chuck handles this is exactly why he is needed just as much as Neil! Brillant

@ManuelLopez-zq9up Год назад

As much ah Chuck tries to play "the ignorant common man", he's just so intelligent it's a real pleasure to watch both interacting, they balance just too well. I could watch and listen to the two for hours (sometimes I do ;-)).

@Vincent-2057 Год назад

@@ManuelLopez-zq9up they clearly love it as much as we do anyway. It's very good chemistry.

@strifeup2 Год назад

"I've been searching for the universe and in search of it, I found myself." Compliments to Chuck 🤲

@inshadowz Год назад

Deepest thing I've heard all week. And I've been sporting a fever since Saturday, so that's saying something! 😉

@AlphaCentauri24 Год назад

Copied/Influenced from.. "We came all this way to explore the moon, and the most important thing is that we discovered the Earth." - William Anders, Apollo 8 Earthrise photo.

@erdemmemisyazici3950 Год назад

Presumably in the dark, glowing with infrared light.

@kylewood2715 Год назад

I would have loved to have learned about the discovery of infrared in high school, through a staged demonstration of the original experiment: that story is awesome!

@mlungisimokhethi6958 Год назад

We had terrible science teachers, bra.

@whoisthis4948 Год назад

@@mlungisimokhethi6958 my science teacher was amazing. The school staff had threatened to fire him on multiple occasions for almost burning down the classroom 😅

@bentleyboy72 Год назад

You don't need to "stage a demonstration," you can just repeat the experiment. That's what science is all about!

@kylewood2715 Год назад

@FishAntsPlantsandDave It would be “staging a demonstration” because it would not be an experiment, since it was already proven. That’s the difference between teaching and experimenting. With the former you are showing something known, with the latter you are searching or peer reviewing something unknown or uncertain.

@theduder2617 Год назад

@@kylewood2715 Anyone at any time can run an experiment. Matters not if the result has or has not already been proven. Children learn that water can exist in different states. After the lesson, presuming the teacher themselves were educated, the children tend to perform experiments to see first hand the various conditions water exists in. They fill a glass with water to show that water exists as a liquid. They freeze water to show that water can exist as a solid. The teacher will heat water to show that it can exist as a gas. A "staged demonstration" is what one witnesses when watching one of the quantum levitation videos, for they are not actively taking part, and are only witnessing the end result of the discovery, not the process of discovery. Experimentation is a major part of science based education. That applies to information both proven and yet to be proven. It is how one can independently verify a scientific claim on their own without any outside influence of any kind.

@patriot1382 Год назад

A smart Herschel, thanks for the Edutainment on the Neil & Chuck show! You guys are a breath of fresh air....

@paulflores3324 Год назад

Kudos to the producer in finding this guy Chuck.

@fraliexb Год назад

I almost thought Neil was going to mention that the substance that coats the JWST mirrors is Gold (Au), because of its thermodynamic reflective properties.

@munzwakuveya7597 Год назад

Love you guys enjoying every minute of it. Love from Zimbabwe

@singingPanda420 Год назад

I love these two together: they pack so much knowledge with well timed comic relief. Winning combo!

@rolando2395 Год назад

Nope! We can all do without Chucks lame dad jokes

@theduder2617 Год назад

@@rolando2395 Its either Chuck or that lady with the insane, unrealistically annoying fake "laugh". And humor is 100% subjective. Therefore, personal opinions on humor are of no consequence. The person is allowed to enjoy anything they desire so long as it does not harm or negatively impact others. Insults based upon personal opinion and lack of experience is that which can be done without.

@KentuckyJasmonster Год назад

You and Chuck are simply the best! I love seeing this man. I should've studied astronomy.

@StarTalk Год назад

Never too late to study astronomy!

@Ndoda71 Год назад

Chuck was on fire, great video so many things that could’ve helped us understand light in school that we were never taught.

@michaeldussiel Год назад

The applications for this cooling method is endless - especially in parts of the world near the equator. Good one for humanity.

@kariannecrysler640 Год назад

Loving the layered reflection and absorbing

@akdas27 Год назад

When are you two guys going to sit side by side like the old days?? I would love to see you together in a studio and enlighten us about the cosmos!❤️

@Amazon_11 Год назад

Your Simple explanation is needed in education. From 🇮🇳🇮🇳🇮🇳

@adurgh Год назад

You gentlemen are out of this world hilarious yet incredibly informative 😂😂😂

@girmaybass68 Год назад

For a "pico second", I feel as a scientist because of your wonderful explainers! Thank you!

@haroldnecmann7040 Год назад

Boku no pico

@mattevans-koch9353 Год назад

Great explainer gentlemen. Neil and Lord Nice are a real joy to watch. Thank you both.

@Chemy. Год назад

Even when I already about this, it's simply wonderful to hear it from these two amazing people

@davidabdollahi7906 Год назад

Oh really? So you already about it? Well I'm already about it too.

@notinmanitou Год назад

You didn't mention that William Herschel also had a day job....he was a composer, and a good one. I love these "Explainer" videos!

@ra1115508 Год назад

guys, make the chapters in Spanish, at least subtitles please, you are doing an excellent job 😊

@fraliexb Год назад

Neil forgets to mention that the JWST also has a cryogenic coolant system for the MIRI sensor to get it to its desired operating temperature. And, that cryocooler is on the sun side of the heat shield, and pumps the super chilled coolant to keep the MIRI sensor at 7 K.

@wape1 Год назад

Thanks, didn't know that! Making that kind of system work flawlessly without any maintenance must be pretty darn difficult, but I guess that applies to most systems on the JWST... 😅

@FrustratedAeroBoys Год назад

never run out of ideas, pls

@FrustratedAeroBoys Год назад

wish we could program Neil unto like an Alexa! you could have it anywhere u go :3

@dearcath Год назад

@@FrustratedAeroBoys I'd pay for that 🤣

@FrustratedAeroBoys Год назад

dude! that'd be like life changing for me. His explaining is so smooth, I feel he can guide me thru life ykwim

@life_of_i_ Год назад

All they have to do is give me a little smoke sesh and I’ll hit them with the “sooo sooo how does” 😂😂😂

@DJPYTTA Год назад

Yes, please don't

@TG-Maverick22 Год назад

I love these explainer videos, we need more of them please.

@StarTalk Год назад

More are on their way!

@TG-Maverick22 Год назад

@@StarTalk I feel honored that Startalk replied to my comment. :)

@raiderjohnthemadbomber8666 Год назад

Prof. DT, as always you have taken a very complicated subject and explained it in such a way a fourth grader can understand it. Love to watch you guys, the experience is often cosmic!

@ahmdf Год назад

"I went searching for the universe, and all I found was me" LOL One of Chuck's most underrated lines ever

@consciousalien4146 Год назад

Love what you guys do Neil and Chuck!

@Rahulnpx 10 месяцев назад

I wish science was taught in such a relaxed manner in schools. Hey !! Neil and the startalk team , please have a startalk science course from these explainers that anyone can sign up online and is available for school kids all over the globe. This will take away the fear of science and math is too complicated and make the next generation of humans more science literate , ultimately making better informed decisions that help us survive and take better care of mother Earth. I can't thank you both and your team behind the scenes enough for the awesome work you are doing, blessings from the universe!!.

@manslaughterinc.9135 Год назад

Thank you for making a post that is about things I don't already know about JWST. There are so many 15 minute long episodes that are just a rehash of the exact same thing in every other video, and there might be a 1 minute blurb about something new. That boring stuff is exactly why I dropped out of highschool.

@BuzzkillZone Год назад

Long joke at the end was particuarly funny. Good job Chuck.

@sapelesteve Год назад

Excellent video Neil & Chuck. What's also amazing is that the JWST can function at temperatures just above absolute zero! Now how is that possible? 🤔🤔

@solotrotrotro2530 Год назад

the universe itself in average, already is at just above zero kelvin, something like 2,7 kelvin....hit the mark of 0 kelvin its impossible due to the laws of thermo. the JWST uses a combination of passive coller , with a cryocooler refrigerator device that uses liquid helium on a cloesd loop system to avoid the instruments to heating up and mess the detections. by the way, the closest to absolute zero, more energy you need to keep going low, at a point, you will nedd infinite amount of energy to reach real 0 K. i think we already reach something like 00000000000,1 K but its geting harder and harder!

@CommandLineVulpine Год назад

It's all the reflectors and sensors that have to be kept cool, the computers and everything else that needs heat is on the sun-facing side

@jimweisgram9185 Год назад

@@solotrotrotro2530 I'm not going to count up all those zeros. Lowest temperature achieved in the lab is a free trillionths of a Kelvin degree. 0.000000001 or so. I'm thinking because of the Heisenberg uncertainty principle, we cannot actually achieve 0 degrees Kelvin even if we could use an infinite amount power. Here's another point of view. Temperature is usually thought of as a measure of the energy level of all the atoms and whatever stuff is within a volume. Suppose you had a cubic meter of interstellar space with no molecular, atomic, and subatomic particles present. So, absolute zero? Actually, the volume would have lots of activity as subatomic particles wink into and out of existence. Why does that happen? That pesky Heisenberg Uncertainty Principle. There is a level of unknowable character to any system.

@theduder2617 Год назад

@@jimweisgram9185 You offered only two less zeros than the other person though. lmao!!!! If we can count your zeros, you can surely count his. Just add two 0's to yours, its easy. hahaha!!! Just messing around before work. Ignore me. lol

@manpreetbhattee9732 Год назад

Can't get enough of explainers. Keep 'em cominnn!

@mustardsauce5201 Год назад

honestly i love the videos with just the two of you. its great.

@iwannaseenow1 Год назад

Chuck was on fire this episode!

@dustyrichardson7325 Год назад

Hello, Mr. Tyson! Just saying it was super cool to meet way back when you visited WSTF. Keep these coming because they are nice break from my day!

@scottcarr8738 Год назад

Thank You for testing on our behalf my Brother!

@musicloverme3993 Год назад

"super cool" I see what you did there!

@ScreamingYellowMach Год назад

Neil and Chuck are the best!

@protoword10 Год назад

The best explanation on RU-vid about motion of JWT at Lagrange point and why! Thank you!

@ylette Год назад

Great video, loved the story about how IR was discovered.

@AddFilmmedia Год назад

Outstanding! I wish I had had a physics teacher like you two when I was in my early teens! ❤

@arnovanthienen7099 Год назад

Another nice episode guys! It's crazy how the JWST still can operate in deep space temperature, I read in the comments below 7K:o.

@cozmicarchitect Год назад

Wow. That was nice detailed explanation on why JWST is positioned the way it is. 💪

@gandolph999 Год назад

William Herschel might be credited with the modern discovery of bands of light beyond the range of human sight but the ancient Egyptians somehow knew and had measurements of lightwave frequencies from visible to gamma (in five measurements) recorded in an elegant demonstration. They also (surprisingly) recognized time as a dimension of cosmic time-space. It's stunning stuff but everyone is stuck on spirit, gods, magic and gold. And, these videos are excellent, interesting and informative.

@njones420 Год назад

Do you have any citation for this? I like to think I'm quite up on my Egyptology, but never come across that (and couldn't find any references to it) There's a lot of nonsense about Egypt floating around the internet though...

@jimweisgram9185 Год назад

I have a hard time accepting that. Do you have sources of information?

@Sorteal Год назад

I'll take all the information about the JWST I can get! Thanks Neil and Chuck.

@davidemeghe9623 Год назад

@@HopDavid why do you say so?

@1WorldPhotographydotcom Год назад

Love learning from you, Neal! You are such an awesome human being! Thank you! 🤗🤗🤗 And love Chuck’s sense of humor! 😂

@attilahun8541 Год назад

There is nothing can make me laugh faster than NEIL’s laugh 🤣🤣🤣🤣 🤣🤣

@mikestewart7338 Год назад

Love you guys banter. I never miss an episode.

@levirivers2772 Год назад

Man you guys are hilarious together good team good jokes

@jamesturpin8271 Год назад

Very interesting,and informative. Thanks.

@AZChrisK Год назад

Chuck Nice is BRILLIANT!

@Kingjaffeyjojo2900 Год назад

Mind blowing experiment 🔬 I’m definitely going to try it 💯

@KeithJohnson. Год назад

Very interesting! Also loved Chucks party comment at the end 😅 so funny

@lavennaidoo5901 Год назад

My understanding for them cooling the JWST was that it would lower the atoms in mirrors vibrating so that it could take better images.

@SixthMassExtinction Год назад

Brilliant show yet again. Thanks guys. 👍😁👍

@beckyd712 Год назад

Thank you for another eye opening, mind expanding video! Yall are great entertainment that's educational as well! We appreciate you both. Thank you!

@putnamehereholdmadoodle Год назад

U no Neil lies and just says what he wants to keep himself relevant?

@davidemeghe9623 Год назад

@@putnamehereholdmadoodle looks like you want to feel relevant, that's why you would spout such crap 🙄

@michaelgabrielraphael9554 Год назад

When will you be on with Stephen Colbert again? Love watching when you are a guest! Informative and funny! The best teachers I ever had in school could do informative/funny.

@gnsmk357 Год назад

This was plain speak for a very importaint function of this object. A++. Great Job.

@TomTropicana Год назад

So good!👍 🌠 Great production.🎯

@joemug4079 Год назад

Loved learning this.

@amitsalvi Год назад

awesome insights ....as always.....Thanks!

@MissingMars Год назад

simply awesome -thank you both! ;-}

@gregcarson3444 Год назад

Neil deGrasse Tyson you are the man, love your video’s, and I love space so thank you.

@Garrett0329 Год назад

Glad we have this brilliant mind and the comic relief it’s the perfect mixture! I’m sure the other guy has insights, however Neil’s shadow drowns him out

@skaggreen4212 Год назад

that video was one of my favorites! good times

@RichChh Год назад

6:24 Good one Chuck!

@theduder2617 Год назад

Want to see infrared light on your own without any special tools or equipment? Grab your tv's remote control, open your cell phone camera app, point the remote at the lens and hit any button. Volume buttons work best as they send a consistent signal the entire time the button is held. It also works to see an infrared stove burner long before it reaches visible light temperatures.

@fckmaga Год назад

Really..you gotta love these 2 in a cosmic chat, makes me have hope in humanity, best I can

@daronolenus3911 Год назад

Incredible video Dr. Tyson explained it perfectly!!!

@IIISentorIII Год назад

I always make my Coffee with Italian Bialetti - Moka Express and use the Infrared Head because I like how it tastes 😁

@elsastark2351 Год назад

I just love y’all! 😂 I could be biased, I’m a fellow New Yorker, I can appreciate the humor 😊

@horatius2006 Год назад

Great zingers from Chuck! @6:30 "unfit for vision" - it's not our problem, it's the photon's! @9:00 "I was searching for the universe, and all I found was me." @10:52 "I hope you were paying attention people, because you're going to be at a cocktail party..." :)

@gsav1320 Год назад

Explainers are the highlight of my life

@kashdavis5578 Год назад

I went n looked up chucks stand up comedy the other day..........niels a good guy

@theMichaelsLi Год назад

How awesome will it be when we truly find ourselves by developing our full potential and through this achievement discover the knowledge of the universe? I heard the joke prophetically. Science and discovery bring out the youthful excitement in us all, the more we learn the more we can learn.

@viewfromthehighchair9391 Год назад

Quick question popped into my head when you mentioned that greenhouse gases trap infrared in our atmosphere. Now that we can apparent see exo-planets more clearly (?), would it be possible to detect the possibility of life by looking at infrared signatures which don't appear correspond to what we would expect based on the composition of an exo-planets atmosphere or are there natural ways greenhouse gases are produced where we would be able to discern a source? I think what I'm trying to get at is, would a lifeform on a planet make that much difference in production of greenhouse gases where we could deduce their existence from the composition of the atmosphere being discovered?

@lemongavine Год назад

CO2 is a greenhouse gas and is present without life. Mars is an example. However, I’m pretty sure Methane can be proof of life and I think that’s something astronomers look for signatures of on exoplanets. I’m not 100% sure of this so you might want to research further before repeating it a Chuck’s cocktail party 😂

@viewfromthehighchair9391 Год назад

@@lemongavine I appreciate your reply very much and the morning laugh as a bonus (I just got up - teehee). Problem is, I know just enough to be curious and not enough to talk about it. After commenting, I knew I should at least do some Googling to see what I can find about how greenhouses gases can be produced, either natually or artificially (by a life form). It's on my list of a thousand things to do today and that's how it goes. I'm sure you're on the right track though and it gives me a jumpiing on point. Have a great day and I'll see you at Chuck's cocktail party. Should be a gas. 🙂

@explicitkingmuzik Год назад

Yowww chuck on that last joke!!!!Frl😂.......have to say I'm totally enlightened 👊🏾 great one guys💯

@SyegerTubs Год назад

actually we have similar conversations at the kitchen here in Odesa , its a little bit comforting while its war on the Ukraine.. tnx for the thougtfood

@bryanrivera500 Год назад

Wooooooo I love startalk!!

@d.charlespyle Год назад

Actually, being religious tends to be conducive to the idea that there are things out there that our eyes cannot ordinarily see. Most religions believe in an invisible Supreme Being who cannot ordinarily be seen by human eyes, as well as plenty of other invisible things. But while there are bands of IR that are blocked and reabsorbed by greenhouse gases, the atmosphere is relatively transparent to other bands of IR. For example, IR in the 9 to 10-micron range pours out of the atmosphere into space in huge amounts. And that is why being out in space away from the earth and facing away from us is the ideal situation. Earth itself would flood the telescope with emitted IR! And that is in part why it never can be pointed toward earth.

@SteveC38 Год назад

Nice Job!

@kevinotey2334 Год назад

Great video!!!

@Zerochan-gr8yc Год назад

10/10 explainer video 😁

@Aromapablo Год назад

Good episode….imma get back to looking up now. Off with you, you tire my brain 🧠

@dungteller367 Год назад

Awesome and thank you!

@RussShirley1 Год назад

That WAS good, thanks guys, you're the coolest.

@gettyro7390 Год назад

Definitely cocktail party conversation lol.

@davidtate166 Год назад

Definitely an engineering marvel for the 21st century and beyond.

@stephengillenwaters1950 Год назад

We could sure use that reflective technology here in Florida.....cause it's HOT!!!!!.... Thank you very much for sharing that interesting information. Love the videos guys!!!

@1d1hamby Год назад

Smarter Everyday channel did a very good explainer about the heat sheild.

@1d1hamby Год назад

The heat sheild is more of a heat pump than a sheild.

@vinumathew1713 Год назад

NDT, The Carl Sagan of the 21st Century!😎

@greendragonreprised6885 Год назад

Damn, that's clever. I'm so glad we have smart people who can think of such things.

@bullettube9863 Год назад

I remembering reading that William Herschel's and Albert Einsteins' genius was the ability to ask questions that no one else had thought about. I was very lucky to have had a science teacher in 9th grade in 1964 who could explain science the way Neil does! I remember my teacher had a collection of prisms and he explained how each one could split white light into various separate colors.

@evanfry9205 Год назад

Thank you for Star Talk. Informative and enjoyable. One question: from the perspective of the JWST, does the Earth transit the sun or eclipse it?

@robertcarpenter1615 Год назад

I love this so much!!

@brettrossi89 Год назад

When there is a commercial that interrupts the video I’m watching I get a pen and write down what product it is and to never buy it or use it

@logosfabula Год назад

Neil and Chuck, I love you so much!

@emanuelberecry5054 Год назад

I love these guys :)

@peachklapper8014 Год назад

Anyone else hear the fart at 10:58 😂 I think it was Neal when he laughed, then he aired his nostrils to give his fart a rating 😂. No matter how smart you are, we are all guys at the end of the day. Love it