We've never seen THIS before - James Webb Space Telescope 

The way Diana's face lights up every single time she explains something to her editor is so nice to see.

two amazing things that no one mentions: the flap on the back of the telescope is a small solar sail, its going to be used to help rotate the telescope to reduce the saturation of the gyros. another thing is that its so freaking cold on the shade side of the telescope, that you actually can use superconductors, and that is exactly what they did, some components are made of superconductors to reduce weight.

There's an old XKCD comic that explains how impossible it is to know EVERYTHING so if someone says they don't know something, you shouldn't criticize them but rather get excited that you have the opportunity to introduce them to something new and cool. The best part of this channel is that Dianna takes this to heart, and it is wonderful.

My 5 year old daughter, and I, love watching your videos! She says she wants to be a scientist when she grows up - so thank you for being an inspiration to her! Hope your eye feels better soon. :)

Been loving this format where you're chatting with your editor! Great video as always, keep at it and have a quick recovery on that eye!

My uncle got me into science when I was a teenager. He was very excited about this project for over a decade. He said "seeing what happens" in space science was one of his reasons for living. Unfortunately, he passed away last summer and I was often reminded of how much he would have loved to see the images that will be coming out later this year.

I absolutely LOVE the Physics Girl. She's hilarious, plus she gets so excited explaining the science and engineering of the JWST that she makes the learning fun and interesting. Thank You!!!

LOVE your channel. IF i had to do it over again, I'd major in physics. LOVE seeing a young woman this intelligent and educated setting a phenomenal example for young girls everywhere. Thanks.

Dianna: "you think my face looks bad, you should see the surfboard that hit me!" 😂 I'm glad you're ok. Loved the video!

6:20 OF COURSE Dianna has a cosmic microwave background plushie 😄

I love the enthusiasm that is so clearly seen in your face, even after you got hit in your head. I love to see your joy of seeing physics happen :)

I just love how your team puts together these videos. The credits, and the comical lines, are just wonderful icing on the cake!

Oh, no! She forgot her elements. Our sweet Dianna got hit in the head so hard some of the periodic table fell out! 😄 I hope you get your memory back quickly, Dianna. Get well soon. 🙏❤

I am so excited to tell my 7 & 9 year old the quarter analogy. We have been following the James Webb adventure as a family. It is so incredible!

I just discovered your channel and love it! I postdocked at MIT almost 50 years ago. I loved the environment. Everyone there was interested in what I was doing making it the most fertile environment for learning that I have enjoyed. Your enthusiasm, brilliant mind, and quick wit make me feel like I am back at MIT. I have already come to understand things I have puzzled about for years from watching just a few of your videos. I look forward to learning a lot more.

This channel is very well edited. Having the visual aids alongside the explanations, really really helps. Thank you.

I love how you can just tell how excited about all this you are! I cannot wait to see what we discover with this new technology

This video was perfectly executed! Fast paced enough to keep your attention but detailed enough that nothing important was left out. Awesome job girl 💪

Thanks for making this easy to understand. Fantastic work, Physics Girl. Keep this creative, educational content coming.

I can't wait till we get the first break through of life out there, and also the first photo it took its crazy to see how many galaxies are out there, just showing anything is possible for life to be out there.

Aww. I hope your eye gets better! You are such a strong wise woman!💖💖💖💖👏🏽👏🏽👏🏽 As a 12 year old learning about space from you and my science teacher learning is interesting.

Really looking forward to seeing images from JWST. Hope it finds stuff that nobody is even expecting, and it takes us further into a whole new era of interstellar, intergalactic awareness.

PG: I absolutely LOVE watching your videos. Had you been my science teacher I may have moved in a different direction. You make topics interesting and relatable. Love your enthusiasm and intellect!

Your analogies make me chuckle in a good way 15:46 Severed heads, and 16:20 trebuchet splatter.

First time watcher-now subscriber. This was one of the best videos I’ve seen on JWST and just science in general. I love your intelligence and easy going nature in explaining things you’re passionate about. Stay blessed and please watch out for the flying surf boards. You were very fortunate.

Seeing somebody let their passion and excitement shine so brightly while teaching - especially in the sciences - is so wonderful. Fantastic video, Dianna (and team)!

Just found your channel and LOVE IT! I really enjoy your excitement. Look forward to many more and catching up!

These are my favourite discussion, the wonder in your eyes and the passion with which you speak is inspiring. Thank you.

The JWST was launched by Arianespace / ESA. The payload was a NASA/ESA/CSA collaboration .

One thing I learned about that I thought was super cool was that we could also look for technosignatures. On top of the elements of biological processes, if there were a civilization on a distant planet, we could also potentially see silicon signatures like we do here on Earth which would be a much more definitive sign of advanced life or civilization on a planet, in concert with the appropriate biosignatures of course.

Any video that has a thumbnail with a red arrow pointing at something is a must watch for me. No one would just arbitrarily put a red arrow in an image unless there was something really, really important to show.

How have I gone this long in my life without you? Great content!! I will be a regular viewer as long as you keep being excited about science!

Woke up, went surfing. That sounds like paradise! And now to the substance: You made me understand the progress of the James-Webb-Telescope. Thank you so much! That literally will be the first thing I will explain to my 6th and 8th graders in school next week.

I love how simply you describe very complex things. While I've read and watched a lot about JWST, the Fanta explanation for finding life made more sense than anything I've seen so far.

Your enthusiasm is so contagious! Feel better, Diana.

Kapton is seriously awesome.....We use Kapton tape at work and my Engineer asked today how can we isolate the GND vias from a RC filter mod we want to make...I said Kapton. He was worried about the heat from the solder iron, I took a piece of tape stuck it to wood and melted solder on the tape. The wood started burning but the tape was fine....He was so amazed and didn't know Kapton can do this. I then told him about JWST using Kapton as a heat shield. Kapton is awesome

I can remember being in awe after seeing some of the earliest images, of gorgeous stellar nurseries, produced by the *Hubble Telescope* (after the mirror was fixed & colour-corrected). Several years further on, *The Hubble Deep Field Image* was developed (from a composite of 342 images) & I was utterly blown away with the huge number of entire *Galaxies* seen in such an infinitesimally small section of the sky _(2.4 arcminutes a side / 24-millionth of the whole sky / or the area of a freakin' tennis ball @ 100 meters away!)_ - implying a truly staggering quantity of *Galaxies* in *The Known Universe.* Now, decades later, I get to see the amazing things that the *James Webb Infrared Telescope* will show of the early days of *Stellarsynthesis,* potentially habitable worlds & even *Infrared* views of the center of *The Milky Way,* without the obscuring dust blocking it - perhaps even high-resolution images of *Sagitarius A**

Levi is such a great sounding board for you. He knows little enough about your science that he asks great questions and has such honest answers when you ask him questions. Yet he appreciates and learns as you go. Great teamwork on your videos when you interact with him.

This is so cool, one of my best friends worked on this telescope. Awesome to see some of the tech he developed in use!

So much awesome info! Thank you!! Hope your eye heals up quick!

Hope to see Webb's Ultra Deep Field this summer.

The mirrors of Webb and Hubble, _normalized for wavelength,_ are much closer in size than the dimensions indicate. Time to invent the _Surfing Helmet._

i love Physics Girl, she gets excited about a lot of the same things I enjoy learning about and her passion and enthusiasm for science and understanding is inspirational and keeps me wanting to learn more and more.

Destin introduced us me to your channel. You both have that enthusiasm to communicate and teach. Thank you.

This is a great video! (Ok, technically I'm currently only four minutes into it, but so far it's great). But your segue to the sponsor may be the single most hilarious segue I've ever heard and I burst out laughing. That was great!

So many amazing and straightforward answers to questions about how humanity's newest eye is going to look at the universe. L4/L5 is stable so there is random space junk there, so we sent our telescope to L2. Such a great explanation, Dianna!

absolutely love these episodes. thank you so much.

I love your energetic enthusiasm and perspective on the current physics. It rubs off on. I can't help but feel excited about new research and discoveries. Thank you, Diana.

I’m a NASA intern this semester and during one of our orientations Gregory Robinson, director of the James Webb telescope program spoke to us! He just said a few words, but that’s been my coolest experience at NASA so far.

Thanks for your post on the JWST! Hope your surf injury heals soon! It's cool that you surf and still did this video despite your injury! You've "leveled up" in my book!

It's so cool and you're so cool and excited about it. I'm glad that I found you on RU-vid!

This is so well explained , i learnt alot from this video and before i forget i really think you have the best smile i have ever seen!

Really, really great video. You really captured a lot of the science around the project and in an approachable way. Amazing as always!

I got so emotional watching this video! 🥰 I'm so fascinated by all of the possibilities of what we're going to discover! I'm nearing the end of a book titled a short history of nearly everything by Bill Bryson and that book has only made me even more in love with science and physics than I already was, which was a lot. I love this video so much!

Man when someone gets excited by what they love it is just magical. Great Job!!!!

Spectroscopy so well explained! Well, to be more precise: "The universe, life and everything" better explained, you are such an excellent explainer!

1) Glad your eye is okay 2) As a photographer, everything having to do with our perception of wavelengths fascinates me 3) I have an old digital SLR that I converted to IR. The sensors of a lot of older cameras were originally designed for astronomy, and still have extended IR capabilities. They put what are known as "hot mirror" filters in front of the sensors to stop the IR from messing up your image. By removing the filter from the sensor, and putting a IR filter in front of the lens, you get IR pictures. Its hard to grasp what the Webb telescope is about to see.

15:48 - 16:03 might be the greatest scientific breakdown of the mirrors weight

Excellent video! It educated me better than some other videos. I am in awe now of the incredible engineering that created the James Webb Telescope. Great explanation and graphics!

The way you explain it, talk about and make it reliable as someone with adhd my brain was about to keep up, thank you

What a fantastic video - super classy! Love the enthusiasm sorely missing today. Please keep us informed on developments.

Watched the webb launch with my dad, it was amazing. Great video as always!

This made me emotional. This and Dr. Becky channel are my fav scientific ones on YT

Omg I feel terrible I’m glad you’re okay !!!!!!! Happy healing 💜💜

Thanks for this video, I've been waiting for you to address the topic. Thanks also for explaining how you got injured. It's none of my business of course, but I'm relieved that it's a minor injury and you incurred the injury while doing something you love.

Wish i had you as a teacher in school, you make complicated science seem fun and easy to understand.

Awesome explanation of what the JWST will be looking at and how and why. Excellent video.

Hope your eye heals fast and thank you so much for sharing all this wonderful information, you present it with such an upbeat joyful presentation.

I love these explanation videos so much!

You blew my mind with that Fanta analogy. I’ve always admired your skill at putting complex points in simple words that I can use to tell anyone

I’m fascinated with space so thanks for posting. I liked your quirky analogies -charming.

BIG topic made accessible as you do so well. Thank you !

One thing I heard about the sensitivity of the JWST is this: Imagine looking at a standard kids night light on the moon with one eye but divide that light by 20. Your one eye would see about 1 million photons of light per second from 1/20th of a night light at that range. JWST primary mirror being 6.5 meters (21 feet 4 inches) across will be focused onto and collecting approx. 1 photon per second.

Nice video! One can see the effort and dedication you've all put into this. And it is well deserved, this telescope is headed to be a real game changer.

Great segment. Always enjoy your humor.

Your videos are terrific. Thank you!

@Physics Girl I like this video the best of yours (not that I've seen them all) -- the science details, the pleasure of you seeing your editor "get it"... E.g., I appreciate the dominant absorption wavelengths of water/carbon dioxide/methane, and what eras of EM radiation can be seen by HST vs. JWST vs. COBE/WMAP. So nice to have such a video showing two women involved in science posted on the International Day of Women and Girls in Science ! Hoping your head/eye heal completely and soon!

Thank you for making videos.. not only are you super informative, you’re also very accessible, and fun. Your team is always asking cool questions and it really makes for great conversations. Thanks for being the Arcturus in my YT universe of viewing. (Shiny bright star in the void) :)

I'm so glad for Levi asking questions that going through my head

I love the way you explain things. You're channel should be a must see in every school.

I love your explanations of the JWST functions, and always your enthusiasm. Watch out for the Surf Board Monster!

She says it's a surfing injury but secretly she's been fighting the ninja minions of a super villain.

Hello, I'm a new subscriber I've always been interested in space and astronomy and the origin of our universe. So happy I found myself here. Thank you and keep up the amazing work

Thanks for the explanation!

Aphysics nerd who also surfs, instant subscribe 🙂 Thanks for this, it really goes a long way to explain why so many are so excited about Webb's success. It makes landing Neil and friends on the moon look like winning a game of Cornhole, and we all know that's the furthest from the truth.

Thinking about cosmology is one of the things that helps me keep going in these "interesting times".

Was a Reliability Engineer on HST development for several years including initial deployment and also repair/maintenance missions, such a success story over our failure modeling, predictions, mission life, etc., super cool to have worked on the HST mission - With respect to JWST, mega exciting but wow $10 Billion is quite the expenditure based on original estimates, schedule, etc. - Anyway, the science implications and potential discoveries I assume are going to be quite enlightening - Mission success so far with launch, deployment, and calibration are truly incredible based on spacecraft complexity and everything functioning so far as designed - It's going to get interesting for sure... \m/

I love the in person explainer style format!

Thank you, this was an awesome video! I went and watched the NASA one showing the alignment process as well, and it was amazing! I didn't even know they had a special lens that lets them take a photo of the mirrors. I hope your eye is better soon. Ouch, that must have hurt!

I love JWST, can't wait to see what we can discover with it! I reacted on one thing though, NASA didn't launch it, ESA did... just give credit where credit is due!

Excellent so informative thank you

Thank you so much for the video because this telescope has been holding my interest and I been having alot of questions which some of them you answered!

So excited for the information coming from Webb! Also, hope you heal good. Just tell people you got in a fight and that they should see the other person!

All the people who worked on this telescope are just amazing. Im so curious about what it will discover.

Very informative! The tech in this telescope is certainly mind boggling.

that really helped me understand when you said if you took a picture of everyone on earth and fit them in one spot is how in a sense the back ground radiation kinda is thank you

Great video! Super informative, thank you!

Awww, ☹️ sorry to see you hurt 🤕 😱 Hope you're all ok & 🌟Get Better Soon!🌟 😁 💖💐💖💐💖💐💖💐💖

so butiefull so smart thats hypnotic, love the channel and keep it up

I'm finding my love for science out of the classroom (admittedly a little late in life!) but it's a wonderful journey nonetheless :) Very stoked on your content, Dianna!