The Largest Star (Stephenson 2-18)

Рет қаралды 3,155,292

Күн бұрын

Stars come in a wide range of sizes, but how do we calculate a star's size to determine which is the biggest? In this episode of OOTW, we will find out how stars are measured to determine their mind-blowing sizes, and above all, which of them are the largest stars.
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FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
spaceengine.org/
Get SpaceEngine on Steam: store.steampowered.com/app/31...
Stock footage provided by Videezy.com
Canis Majoris Nebula By Judy Schmidt - Flickr: VY Canis Majoris Ejecta Shell, CC BY 2.0, commons.wikimedia.org/w/index...
WOH-G64 Torus: By European Southern Observatory - www.eso.org/public/images/eso..., CC BY 4.0, commons.wikimedia.org/w/index...
Canis Majoris Optical and Infrared: By ESO/Digitized Sky Survey 2. Acknowledgement: Davide De Martin - ESO website, CC BY 4.0, commons.wikimedia.org/w/index...
MUSIC:
Two songs in this video were made by Chris Zabriskie. His music is absolutely fantastic and makes videos 10x better. He's just released a new album, so if you liked the music in this video, please consider checking out his KZfaq channel and website.
/ chriszabriskie
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- Abandon Babylon (New album from which the songs came: chriszabriskie.bandcamp.com/a...)
Dark Fog by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/
Ice Demon by Kevin MacLeod is licensed under a Creative Commons Attribution 4.0 licence. creativecommons.org/licenses/...
Source: incompetech.com/music/royalty-...
Artist: incompetech.com/
All other music provided by the KZfaq Audio Library
SOURCES:
- Why Do Stars Vary in Size: www.forbes.com/sites/startswi...
- Determining Star Radius: forums.space.com/threads/how-...
- Metallicity Impact on Stars: adsabs.harvard.edu/full/1998A%...
- Red Giant Sun: imagine.gsfc.nasa.gov/science...
- Stellar Wind Composition: www.sciencedaily.com/releases...
- Star Size Limits: futurism.com/is-there-a-limit...
- Parallax Visualisation and Maths: • Stellar parallax and m...
- Canis Majrois: www.constellation-guide.com/v...
- List of Largest Stars: en.wikipedia.org/wiki/List_of...
TIMESTAMPS:
0:00 Introduction
1:04 What Are Stars?
5:40 How Stars Become Huge
9:38 Problems with Direct Measurements
11:31 Parallax
13:01 Indirectly Measuring Stars
15:33 VY Canis Majoris
18:30 UY Scuti
22:59 Stephenson 2-18
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Пікірлер: 3 000

@brettvv7475 3 жыл бұрын

..b..but mom says _I'm_ the biggest star.😔

@Jaezzyx 3 жыл бұрын

Mom is always right. 😂

@JahonCross 3 жыл бұрын

She lied 💀 🤧

@brettvv7475 3 жыл бұрын

@@JahonCross Does that mean I'm _not_ the most handsome young man in the world?

@yosha1237 3 жыл бұрын

"my little stephenson 2-18

@Damita-ye2yl 3 жыл бұрын

You are, carry on.🌞

@dimwiddy9808 2 жыл бұрын

If this is Stephenson, I'd hate to see Stephen...

@beny988 4 ай бұрын

😂

@pizzasub3194 3 ай бұрын

🤦🏽‍♂️🤦🏽‍♂️🤣

@Diddlydoodly420 2 ай бұрын

Hardy har har 😂😂

@Jerbies_Kimmers 2 ай бұрын

🤣🤣

@johnal-kel9063 Ай бұрын

@Countcomfortable Жыл бұрын

If you ever feel stressed remember there’s a very large Star out there named Steven who can barely hold himself together

@wendysfriesready296 26 күн бұрын

Akito!

@angelserenade Жыл бұрын

i can't help but smile when for Canis Major, a freaking dachshund is used for comparison of the constellation lol

@PrashantKumar-wx5sj 28 күн бұрын

And 1 year later i was smiling about the dachshund and looking for another comment doing the same😂❤

@ifriday310 3 жыл бұрын

It’s kinda disturbing to think that 100 years seems a long time to humans, but on a cosmic scale 100,000 years is equivalent to about “a blink of an eye”.

@Andrew-rd9zq 3 жыл бұрын

For me it's not disturbing but it really puts things into perspective, so I appreciate the time we are given much more.

@oddballhippie7363 3 жыл бұрын

Star Trek Voyager...

@notxon300 3 жыл бұрын

the time it takes for us to blink once is about 1/372,000,000th of a lifetime 100,000 years going by is about 1/72,000,000,000th of the universes current age

@adawg3032 3 жыл бұрын

@@notxon300 yeah blinking is too long an analogy compared to our universe

@EMERTHERofficial 3 жыл бұрын

For other species 100.000 years might be as 100 are for humans tho'

@stevebrindle1724 3 жыл бұрын

This is one of the best science channels on KZfaq. As a 67yr old I still remember how things were before the internet and I believe this allows me to appreciate it more. If someone told me back then that everyone could access more or less the sum total of human knowledge and culture from a small box in your room I would have thought them mad!

@ZZ-vl5nd 3 жыл бұрын

For real. The effort he puts in his videos and the quality, are amazing. I grew up with early days of internet and this was a dream for us, to have this quality content h24.

@katherineg9396 3 жыл бұрын

Or a small box in your hand!

@TheRunningLeopard 3 жыл бұрын

A 67 yrs old with a Lenin icon that also appreciates these videos? I feel like I’ve hit the lottery.

@SimonWillcockAntiques 3 жыл бұрын

I’m 40 and completely agree. The advances and impact of technology over the past 25 years can only be compared to when man invented the wheel.

@belstar1128 3 жыл бұрын

I am a lot younger than you but i remember before i had internet i had read every decent book at my local library it was miserable compared to how it is now.

@joshuapatrick682 2 жыл бұрын

Could you imagine being within a few hundred light years of these monsters? How big and bright they would appear at night?!

@darkgreenambulance 2 жыл бұрын

A frightening thought !

@davidanderson2357 Жыл бұрын

I think they'd be big and bright ALL the time. Hence no night. Yes, yes... what about when you're on the side of the planet facing away from the star? Well, I suspect the light would find a way to bend around the atmosphere so you'd never really be in the dark.

@FREEDOM_OR_DEATH_ Жыл бұрын

There would be day and then there would be DAY

@Burnthealphabetpeople Жыл бұрын

I wonder how far away a planet would have to be from one of these stars to be in the habitable zone of it

@Yora21 Жыл бұрын

Betelgeuse and Rigel are both really big stars a few hundred light years away. Sirius and Procyon are also quite big and only around 10 light years away. They are all among the 10 brightest stars in the sky, but still pale compared to Mars and Jupiter. I would imagine Stephenson 2-18 from say 600 light years away to be a very similar sight to our brightest stars. But having it perhaps 20 light years away, I guess it could look as bright as Saturn or maybe even Jupiter.

@JayEm16 2 жыл бұрын

I have to give it to you man. I watch videos about stars, space, galaxies, universe In general and things alike. This is the most jam packed yet simplistic video ive seen. Its got a lot of info on stats yet its not overwhelming and is still understandable for someone who doesnt have an the first idea about stars. Bravo my friend, bravo. Thank you for this.

@JayEm16 2 жыл бұрын

With a single video i havent even finished you gained my respect and made me like and sub.

@Talguy21 3 жыл бұрын

I took Stephenson 2-18's numbers to a habitable zone calculator, and it gave me numbers like 630 AU - 1111 AU, which is a mind-boggling distance. Pluto is at its furthest at 49.3 AU, for a point of reference.

@gtavgraphicsdemo6987 Жыл бұрын

r136a1 is 5 light years habitability zone ( 315 times mass of the sun and 20 times radius )

@nugz1875 Жыл бұрын

Nerds rule.

@TriggerHappy923 Жыл бұрын

Wooh

@fehmeh6292 Жыл бұрын

Does it differentiate between a hot main sequence and an ultra low density expanded star?

@Turtleblade Жыл бұрын

It would also take years just for a full rotation

@Carodej.Dobrodej 3 жыл бұрын

Still cannot believe this level of content is free. This shit is National Geographic or Space Attenborough quality.

@waylaidbyfate.5312 3 жыл бұрын

Who told u it was free?

@Carodej.Dobrodej 3 жыл бұрын

@@waylaidbyfate.5312 Your mother.

@waylaidbyfate.5312 3 жыл бұрын

@@Carodej.Dobrodej guess I gotta look u up.😈

@waylaidbyfate.5312 3 жыл бұрын

@@Carodej.Dobrodej I'll see u soon martin.☠🤯🤬

@trilliamc5185 3 жыл бұрын

You’re right. This content is so professional that it deserves more recognition like a Netflix series

@erebusthedragon8017 Жыл бұрын

I find it fascinating that many of these stars could already be dead. Think for a moment, if a star is 10,000 light *years* away from us, we’re witnessing the star 10,000 years in the past

@rogergeyer9851 Жыл бұрын

Erebus: And 10,000 years in cosmic time is VERY recent. We think the universe is well over a million times older than that.

@DizzyFoShizzy Жыл бұрын

Well, 10,000 light years is pretty damn far. On the scale of a star, not much happens in 10,000 years. Most stars that we think are "close" to death are still sometimes millions of years away from death, and if we were looking at a star 10,000 light years away, it would have to be at the very very end of its life for it to be gone by "now". But even the concept of "now" isnt very clear over vast distances like that. Its pretty hard to think about two events thousands of light years apart happening at the same "moment" so we just consider the light that reaches us to be "now". I love looking up at the stars at night, thinking about the journey the photons that are currently in my eyes must have taken. Some stars appearing as they were 5 years ago, some 30, some 100. What I find more interesting is that a lot of these photons took more time going from the core of the star to leaving it, than they took travelling across space to reach the earth. Honestly, space is just ridiculous. We have unimaginably tiny things making up unimaginably huge things, and here we are trying our best to observe it all. The farther out you think, the less everything makes sense.

@Yora21 Жыл бұрын

@@DizzyFoShizzy Contrary to the meme, pretty much every star that is visible in the sky without a telescope should still exists. Given how relatively close all the easily visible stars are, and even for the shortest-lived stars one or two thousand years really isn't much time, there's even a good chance that every star that you see when you look up still exists.

@whitneydenisha Жыл бұрын

More definition please

@ashurean Жыл бұрын

that effect is why we can see so far into our universe's past. The most distant galaxies and stars tell us not what's there now, but what was there closest to the beginning.

@silenthill1035 Жыл бұрын

I have watched many documentaries on the universe but still didn't know how stars are formed until this video came along. The explanation was easy enough to understand which is quite a challenge on it's own.

@annakessler9372 Жыл бұрын

Quantum Physics is all this

@cade8986 3 жыл бұрын

I just can’t wait for the James Webb telescope

@lucky_shorts100 3 жыл бұрын

Event beyond imagination

@kurtisgonzales37 3 жыл бұрын

Definitely!!!

@TheCoella 3 жыл бұрын

I hope all goes well on launchday🙈🙈🙈

@aaronb1977 3 жыл бұрын

2027 let's gooo

@LowdownBoy 3 жыл бұрын

@@aaronb1977 lol

@chosentonessournotes 2 жыл бұрын

This stuff interests me so much. I suck at mathematics, and I have a lot of trouble visualizing large numbers… But astronomy and cosmology is so fascinating. I just keep binging these videos. I appreciate all you do man!

@Refrigerator44 Жыл бұрын

Trust me: everyone has a hard time visualizing large numbers so don’t hold that against yourself!

@chosentonessournotes Жыл бұрын

@@Refrigerator44 I’ve since heard something that really helped me understand the vast difference between a million and a billion; a million seconds is 11.5 days, while a billion is nearly 32 YEARS. It’s mind blowing stuff!

@ric84 Жыл бұрын

@@chosentonessournotes Another fun way to see it is: the difference between a million and a billion is just about one billion.

@therotten6152 Жыл бұрын

@@chosentonessournotes You think that's bad, from a billion to a trillion is 31.5 years to over 31,000 years...

@Shearsss Жыл бұрын

Extremely relatable comment

@Whatamysaid Жыл бұрын

I need you to know, that your videos are next level. Each and every fascinating film has broadened my understanding of our universe immensely. Visually, each video is more elegant and beautiful than the next. Your narration is not only soothing to the ear, and poetic, but you’ve mastered the art of presenting these highly complex scientific concepts in a way that’s easily 😅understood by a simpleton like myself. I FINALLY FEEL LIKE I HAVE found my go to- FAVORITE channel on all things universe/space/etc

@li.208 2 жыл бұрын

absolutely love space. its always been a huge comfort for me. when i was 9, i thought vy canis majoris was the biggest star, and that it and uy scuti had a big rivalry, but seeing larger stars be introduced is such a nice topic. thank you for this informative video !

@dancingroaches4157 3 жыл бұрын

James Webb telescoop for sure gonna find larger red giant's and mindblowing planet's.

@logosnongrataest7671 3 жыл бұрын

We have heard this Since 2016. Almost we are dismayed😭

@keir92 3 жыл бұрын

planets* - just a heads up. you never use an apostrophe for plurals, not even 90’s. it’s ‘90s

@Panzer_Runner 3 жыл бұрын

Tele Scoop

@borkvelasquez8157 3 жыл бұрын

Maybe by 2050, sure

@mamo987 3 жыл бұрын

facts

@Matt-rn7ub 3 жыл бұрын

Imagine being able to fly to Stephenson 2-18. You park your Starship a few Kilometres from the star (just imagining for now, that the ship would be able to), and looking at a gigantic wall of fire with no end to be seen, no matter what direction you look... I would love to see that.

@anonymousviewer2165 3 жыл бұрын

The sun's closer

@robingelebal8447 3 жыл бұрын

You need a good pair of sunglasses and lots of suncream...😎🤓

@santyclause8034 3 жыл бұрын

And a rly strong magnetic field.

@oleg.h503 2 жыл бұрын

@@anonymousviewer2165 The sun is closer than a few km?, so whe i see the sun at an 45degrees angle i only need to travel a few km to have it right above me?.

@arthouston7361 2 жыл бұрын

Actually, if you look along a line parallel to a tangent to the sun's circumference, you would see space, and not the star. While the star would take up a lot of the view in front of you, it would not be visible in whatever direction you look, assuming that you could restrict the brightness to a level that would allow for viewing.

@sabrocks881 2 жыл бұрын

The narrater is an absolute legend. The content is immaculate. The information and imagery is of the highest quality. I love it. I can't get enough of this channel. What a masterpiece.

@joshuapatrick682 2 жыл бұрын

I love how he describes our “much more accurate measurements since the dawn of the 21st century”…but then all of those measurements over the last 1-2 decades have been drastically changed in the last 2-3 years.

@pixxelwizzard 3 жыл бұрын

"Seasons that last a millennia." Mind blown! This whole video was an absolute delight to watch, and I was in constant awe, not just of the scale of our universe, but of mankind's ability to decode so much of it and the methods they use. Thank you, thank you, thank you for this gem of a channel!

@pauljennings2451 2 жыл бұрын

In for a long hard summer , hope air con doesn’t fail😞

@paulgibbon5991 Жыл бұрын

Oh, you sweet summer child...

@DrJones20 Жыл бұрын

@@paulgibbon5991 ?

@paulgibbon5991 Жыл бұрын

@@DrJones20 It was a "Game of Thrones" joke, the series set in a world that also has very long seasons.

@davidanderson2357 Жыл бұрын

"A millenia"??? How about "millenium"?

@RK-xh8pr 3 жыл бұрын

This channel is probably the main reason for why I got into astronomy

@FREEDOM_OR_DEATH_ Жыл бұрын

You're the main reason I read KZfaq comments.

@smoothpicker Жыл бұрын

I find this fascinating as hell!! I love learning about space and stars and all the things involved. Simply unimaginable sized stars!

@aoconnor2933 Жыл бұрын

I love how you explained the math and processes used to estimate measurements for the distant stars! So cool; thank you!

@CaptainJack246 3 жыл бұрын

Please never stop this endeavour SEA. I will watch you until the end. You are my favourite channel on KZfaq and there is no other channel which I keenly await videos for. Everything you do is awesome and every topic that you talk about is too. You are able to inject such an incredible amount of understandable science in, that your videos are unmatched in their viewing. Your layman's descriptions of immensely complex topics are unparalleled. I can't thank you enough for all that you do, and I beg that you continue it, far into the future. I would love to contribute to you somehow. In any which way. Patreon, bank transfer. Hell, I'd write you a bloody check. For the amount of hours that I have watched your videos (every one of them numerous times) I owe you more than just pitiful Add revenue. Please respond so we can work something out!! -Jack from Dorset, UK

@georgdjoko 3 жыл бұрын

Join button next to subscribe button.

@CaptainJack246 3 жыл бұрын

@@sirensynapse5603 get a life mate aha. Just paying respects to a content creator that I enjoy :))

@pajtimo23 3 жыл бұрын

@@CaptainJack246 I agree, he makes these videos so simple and easy to understand it's amazing

@sea_space 3 жыл бұрын

Thank you very much that’s very kind, I’m glad you like the videos 🙂 if you want to do something extra you can become a channel member! channel members get early video previews as well 🙂

@CaptainJack246 3 жыл бұрын

@@sea_space Done! Looking forward to early posts.

@TheExoplanetsChannel 3 жыл бұрын

The scales of the universe are *_mind-blowing_*

@umarabdullah5510 3 жыл бұрын

Allahu akbar

@starkilla102 3 жыл бұрын

@ozymandias nullifidian god isnt imaginary.. matter of fact science helps prove god exists in many cases

@tixchicken 3 жыл бұрын

@@starkilla102 stop making shit up you just watched an episode of simpsons where homer proves theres a god

@starkilla102 3 жыл бұрын

@@tixchicken i dont watch the simpsons?? Not it really matter im not gonna argue with a flat earther

@godamid4889 3 жыл бұрын

@@starkilla102 gods are a catch all for stupid, fearful people. A stain on progress in every sense. God done did it.

@jeancorriveau8686 2 жыл бұрын

He explains what can happen and what can't about sizes and temperatures. This captivates me. Very good explanations of star formation. Beautiful animations.

@joeblog2672 7 ай бұрын

Exceptional video! A lot of good insight into basic stellar mechanics. I usually find other cosmological concepts more interesting than stars themselves but this one had my attention all the way through!

@ralfsegle3119 3 жыл бұрын

Sea, you're fr my favourite youtuber, i have watched and rewatched pretty much all your vids, and i know this is a weird compliment, but putting on your vids when im tryna go to sleep helps like nothing else, so youve also fixed my sleeping schedule xd

@oscar7513 3 жыл бұрын

Dude, same here. SEA rocks

@techbrain8714 3 жыл бұрын

I thought i was the only one.

@MaxHarris33 3 жыл бұрын

Yepppp! Going down for a nap, and a new video is up? Gooood niiiight

@CollinBB 3 жыл бұрын

I put on the ultimate space Playlist every night to go to sleep. Seriously love this channel so much

@AlanSchezar28 3 жыл бұрын

You are not the only one :)

@DogmaBeoulve 3 жыл бұрын

You're one of the few KZfaq channels in which I will not just purposefully set-aside time to do nothing but watch your video, but one of the fewer still in which I much prefer to make something of an evening of it ;D A meal, a drink and some SEA is a little slice of heaven.

@ericwilliams538 2 жыл бұрын

The uncomprehencable size of this star is just utterly, ridiculously awesome!!! Thank you for the videos that you put out. Your channel is now my new favorite channel to watch.

@TubeYouViewer12099 2 жыл бұрын

What will really make you think is that these are 3 stars out of the billions in our galaxy. There are billions of galaxies, each with billions of stars....

@lepeejon2955 2 жыл бұрын

This channel is the reason why I don't bother watching any type science "shows" on network TV. Well done.

@RGSCOTT 3 жыл бұрын

Really appreciate your patient introduction to the topical ‘main sequence’ before going full-on hypergiant with normally stupefying size comparisons. Top-shelf content, without question. Much gratitude from Canada; huge thank-you for the new content. 👍

@Blood-Authority 3 ай бұрын

Corn on the nose, not a good pose 😂

@upscaleavenue 3 жыл бұрын

The subject of your videos (space) is fascinating, of course, but what I find to be even more compelling is the way that you explain it. You are technical, but also eloquent. You use this kind of science to appeal to our emotions, and that makes it so much more memorable. There is information about space all over the internet, but I watch your videos because of the delivery. Your narration, coupled with the content itself, is amazing.

@chrishernandez3473 2 жыл бұрын

If I had children, this channel would be required viewing to help simulate their imagination and interest in science. I can't believe this level of quality content is free. Thank you SEA!

@SexRealist301 Жыл бұрын

This is FANTASTIC! Absolutely fascinating stuff. Just subscribed. I love these subjects; they're faberoo!

@Vasari12 3 жыл бұрын

SEA, your videos always help me fall asleep, you manage to make something that gives people existential dread so calming and soothing to watch and listen to. Never stop, my dude.

@wesleyhempoli5548 3 жыл бұрын

eh? why the heck would this give you existential dread? how it is threatening your existence? man, you need to calm down, it's not that serious, bro.

@pantherofcarantania 3 жыл бұрын

I'm doing it right now. In my bed, a bit high and rewashing videos. And after 3-4 of them I'll sleep like a baby...

@Pugetwitch 3 жыл бұрын

@@wesleyhempoli5548 I was going to say the same thing. I don't understand why this type of content makes people feel anxious. It actually brings me a sense of relief to actually get to sit down and watch something, and I feel relaxed. Learning about galaxies and how big stars are and stuff is cool to me, not really intimidating at all. It's interesting. My daughter doesn't like watching this channel or space rip because she thinks that the narrators both sound "scary" - but I think this one actually sounds kind of hot 😂 and Dick Rodstein over at Space Rip is great.

@Pugetwitch 3 жыл бұрын

@@pantherofcarantania you must be high if you're rewashing videos 😁

@pantherofcarantania 3 жыл бұрын

@@Pugetwitch Hahaha! Yes, I was...

@ZakisHereNow 3 жыл бұрын

The best way to fall asleep. I even made a “SEA to Sleep” playlist...

@psjasker Ай бұрын

Why can’t all KZfaq science channels deliver content this crisp and clearly presented? Excellent production - thank you!

@eracer1111 7 ай бұрын

I'm so glad I subscribed to your channel a while ago. This video reminds me why I did, and why I need to spend more time there. Brilliantly done. Truly a shining example of what 'astronomy for laymen' channels should be.

@johntitanfall5496 3 жыл бұрын

You and LEMMiNO make the perfect vibe with these videos

@letsgo_inc 3 жыл бұрын

you...have good taste

@helpfulapple3125 3 жыл бұрын

@@letsgo_inc Damn straight he does

@mynickisnick8270 3 жыл бұрын

@@letsgo_inc There's also Nexpo, which is more focused on "horror" stuff.

@donaldjohnson257 3 жыл бұрын

@@mynickisnick8270.....Yeah, my ex-wife stars in a lot of Nexpo horror shorts!

@Mental_Toss_Flycoon 3 жыл бұрын

This has to be my best subscription on KZfaq yet. I just spent all weekend watching these nonstop until just now. It’s Thursday.

@KurdstanPlanetarium 7 ай бұрын

very informative about the Hyper Giant stars and particularly Stephenson 2-18 ! Thanks for posting

@kolektivmozak238 2 жыл бұрын

Calm voice, clear English, informative. Great Job!

@justinharris2272 3 жыл бұрын

SEA always coming through with the discovery channel level of documentaries. Don't ever stop making vidoes man society NEEDS the kind of educational content you put out, and i thank you for it

@tncorgi92 2 жыл бұрын

They're past the Discovery Channel, there's nothing on cable any more except "reality" shows and a few science and history shows that are made for a 6th grade level.

@Mundilfari_ 3 жыл бұрын

Dude your channel came out of no where but you are honestly one of the best astronomy channels on KZfaq. Keep up your good work man!

@rm25088 Жыл бұрын

its weird. Once you start learning about space and stars and planets and everything else involved, you don't look at things the same anymore. Space is fascinating and terrifying.

@shahrukhhasib5047 Жыл бұрын

This channel has helped me sleep for a year now.

@rosegold9396 3 жыл бұрын

of all the crazy space shows ive seen , i’m grateful someone finally started their show with what you would think a space nerd like myself would have had a strong grasp on....how a star is made. every time it’s explained it’s explained in such a confusing manner. i learned a lot from this.

@da2ndshooter 3 жыл бұрын

It’s awesome seeing VY Canis Majoris being given considerable mention. It’s the star that got me into astronomy all the way back in 4th grade so I have a special love for the star.

@sea_space 3 жыл бұрын

That is really interesting because same here actually! When I was in year 7 (6th grade I think that is) we watched a video in school about the largest stars and it was one of those ones where it just kept zooming out. It really got me interested in the subject.

@da2ndshooter 3 жыл бұрын

@@sea_space That’s awesome! It’s amazing how something as simple as an extraordinary object such as this can lead to scientific interest.

@da2ndshooter 3 жыл бұрын

@@sea_space also I just noticed you have a Twitter, I just followed you

@mc6470 3 жыл бұрын

Same for me! I found it in universe sandbox as a 2nd or 3rd grader and I’ve been into space ever since!

@scottjokerst 2 жыл бұрын

Extraordinary! What it also truly spiritual is that everything that makes up all that we see (except hydrogen) arises from these large stars.

@gagaplex 2 жыл бұрын

I'm a microbiologist. I find it incredible to see the scale and complexity of space, yet be so often reminded of the microcosm. It's like it's all a similar pattern on every scale. The universe is an infinity of matryoshka dolls.

@t4rv0r60 2 жыл бұрын

I find it funny that some people compare SEA with national geographic, while in fact this channel surpassed NG already. Its unbiased and unfiltered pure science. How it should be

@conner490 2 жыл бұрын

I just found your channel yesterday, and I've already watched just about every single space video. I think I'm gonna end up watching these again and again, the visuals and the way you make such complex information accessible is extremely unique. Thank you so much for these

@benjaminbrown3939 Жыл бұрын

I like how you use Spaceengine for most of the illustrations

@Dr.Thund3r Жыл бұрын

I’ve learned so much by the first 5 min than my 1 year of watching other videos on stars. They don’t go into detail like this 👍

@elleboman8465 3 жыл бұрын

Great video! I particularly appreciate that you spent the first 15 minutes on background and methodology instead of jumping straight to the list - it really puts the measurements into perspective and makes it a lot easier for us scientifically-minded laypeople to appreciate them :^) I tried looking up the mass of Stephenson 2-18 but couldn't find anything online, not even an estimate or an explanation of why there is no mass estimate. Do you know anything about its estimated mass? or about why its mass can't be estimated? Cheers from Sweden

@sea_space 3 жыл бұрын

Thanks, glad you like it :) I’m not sure what Stephenson 2-18’s mass is, but I think scientists don’t really bother with red supergiant mass because it’s a lot less than you might expect. Most red giants and supergiants eject most of their mass and become much less dense when they exit the main sequence. I remember reading that one of the largest is only 10 solar masses. The mass doesn’t scale with size, and in fact the most massive known star, r136a1, is actually a main sequence star I think

@elleboman8465 3 жыл бұрын

@@sea_space That's what I thought! VY Canis Majoris and UY Scuti both do have mass estimates stated on Wikipedia though, 17±8 and 7-10 M☉ respectively, so I didn't get why Stephenson 2-18 gets a different treatment. Maybe because it's a lot farther away, making its interactions with other bodies a lot harder to measure?

@calanteshush6075 2 жыл бұрын

@@elleboman8465 Stephenson 2-18's mass is around 40 solar masses I think.

@trulyinfamous 3 жыл бұрын

I imagine that having two similar space telescopes at the same orbit, but at opposite sides, would be pretty useful for astronomers.

@danijelovskikanal7017 Жыл бұрын

wouldn't they hit each other?

@whannabi 10 ай бұрын

@@danijelovskikanal7017why would they? If they're traveling at the same speed it's fine. They would hopefully have enough fuel to adjust for changes in speed compared to each other if it somehow changes.

@twrecks6279 9 ай бұрын

How is that outside the realms of possibility?

@aussietaipan8700 2 жыл бұрын

I just discovered your channel and have shown this to my 97 year old father. He also loves the fantastic content and presentation.

@stein1385 Жыл бұрын

This is absolutely fascinating! Excellent input Tysvm ❤️

@andmetalforall2763 3 жыл бұрын

This whole video was absolutely mesmerising, the scale of the cosmos is truly mind blowing.

@tonyrodd6348 2 жыл бұрын

That's just our galaxy alone.

@replynotificationsdisabled Жыл бұрын

What if most of it's an impossible optical illusion? A system that acts a certain way when studied?

@CT0197 3 жыл бұрын

Been watching you since early 2016 and I just gotta say, your channel is still amazing to watch. So happy you grew away from GD and followed your ambitions. I can tell you love the topics you discuss and that you put in the effort. Can't wait to see you grow even more in the future man. Love ya

@obadiahkilgore2964 2 жыл бұрын

WEBB LAUNCHED TODAY!

@ReaperX7 7 ай бұрын

In the words of Qui-Gon Jin "There's always a bigger fish..." One day we will find a star that dwarfs Stephenson 2-18. Maybe even one day we'll find a star that is so powerful it fuses iron which would break all known laws of physics.

@dbsti3006 3 жыл бұрын

The photons take 7 hours to travel UY's circumference. That blows my mind.

@TheGryxter 3 жыл бұрын

dbsti300 I went back and listened to that part three times to make sure that it stuck solid in my memory banks. I too find this astounding! We are soooo small in the big picture. Space science rocks!

@dbsti3006 3 жыл бұрын

@@TheGryxter We are nothing. I want us to be something in the grand scheme of things, but like Neil Degrasse Tyson said, " The universe is under no obligation to make sense to humans."

@stephenanderle5422 3 жыл бұрын

I think he meant radius.

@atanasapostolov2731 2 жыл бұрын

@@TheGryxter and its even more mind blowing that we are bigger than the smallest things out there than the universe is bigger than us..

@mftripz8445 2 жыл бұрын

@@atanasapostolov2731 ? We only know of organisms on planet earth, and about a good chunk of our planet is still undiscovered

@stevencoardvenice 3 жыл бұрын

Would love to see you collaborate with Astrum on something about the Perseverance mission

@nurazidore 2 жыл бұрын

This is the first vid I have seen from the channel, very engaging! Please edit the solar radii explanation graphic at 4:05 to avoid any misconceptions. Thanks!

@anarchywon4170 Жыл бұрын

Expertly commentated, beautifully edited, very informative. Cheers!

@samanthaallix7253 3 жыл бұрын

This is so well explained, watched this video about 5 times. Agree with the Attenborough comment and it's nice to hear the Essex accent and the informal expressions, makes it easier to concentrate on the info. Very enjoyable watch 👍

@thomasm5714 3 жыл бұрын

Extremely high quality content such as this is rare on KZfaq. Very well-produced, factually accurate and concise. Subscribed.

@kruksog 2 жыл бұрын

I'm someone who isn't even a space/cosmos person, and I also have subbed to SEA for a minute. Dude makes quality stuff.

@cavetroll666 Жыл бұрын

good video :) love the channel i listen to the playlist daily while working at my boring factory job making castors and wheels.

@PlanetXMysteries-pj9nm 6 ай бұрын

Thanks for another great video, look forward to many more!

@sierradelta6524 2 жыл бұрын

Damn, Stephenson 2-18 is a seriously chunky chunk! Love this content. Also, ''zone of avoidance'' sounds so cool! Also, also, does anyone know what's happening with Eta Carinae? I thought it was a potential supernova candidate?

@bigzach7778 Жыл бұрын

Hush babe

@DrJones20 Жыл бұрын

@@bigzach7778 No you

@bigzach7778 Жыл бұрын

@@DrJones20 hush up too

@DrJones20 Жыл бұрын

@@bigzach7778 Lol, what a random lunatic

@bigzach7778 Жыл бұрын

@@DrJones20 when I say hush u hush!!!

@Creatiff777 3 жыл бұрын

Wonderful video! Thank you for nourishing my mind and imagination. You are one of the very best channels on KZfaq as far as I'm concerned. Always so happy when you post something new!

@infernal4132 2 жыл бұрын

The size of the universe is true amazing and terrifying all at once. I love learning about space and all the wild stuff that goes on in it. But it also reminds me just how small and fragile we truly are.

@hea4nothin Жыл бұрын

Astronomy and Physics were my favorite subjects. I graduated from a University and now work as a Tech in a dealership. I have never gotten a car misaligned to a lift, a car to fall off from a lift or caused an accident there. People have asked me how am I the way I am. I told them it’s all common sense and you just have to predict what could happen and just do whatever to prevent it. Some rookies asked me how do I seemed to able to always solve/fix situations physically, I told them it’s all logic and physics.

@DJ-ws6je 3 жыл бұрын

The intro and soundtrack gets better everytime. 🤩

@rohanmukherjee6170 3 жыл бұрын

Hey Sea , I have been watching your videos for a pretty long amount of time and you never cease to amaze me. you always inspire me to become an astrophysicist and answer the questions about the universe that nobody has ever answered. Great content as always !

@michaelolsen2348 2 жыл бұрын

Makes you wonder what's out there. I bet there's stars that would make Stephenson 2-18 look like a grain of sand. Can't wait to see what they find in my lifetime.

@LordRaa Жыл бұрын

I often wonder how we "know" about certain things like this. Thank you for explaining how we, as a species, have come to know about the distances, masses, and luminosities of these stars.

@johannageisel5390 3 жыл бұрын

That was awesome. Thank you for this well rounded compilation of large stars.

@ThierryTiramisu 3 жыл бұрын

0:35 Stephenson 2-18 is a "oh lawd he comin' star 🌟

@javie5080 2 жыл бұрын

As a kid I loved how the universe works. As I got older I found that most of those shows and movies they’ve come out with since are extremely over simplified and repetitive, not going into detail about obvious questions because it might be to complicated for most. KZfaqrs like your self do the research and scientists more justice.

@gamechip06 Жыл бұрын

Interstellar was good at least

@whalehands4779 2 жыл бұрын

Videos like these make me feel the fact of how small we are and how miniscule the human species is

@LoneWolfeMedia 3 жыл бұрын

SEA your videos are truly spectacular and one of a kind. I’ve been studying astronomy since I was a little kid, when I first sat in the front yard and looked out into the night sky. My dad told me the stars were millions of miles away, and that moment captured my imagination and never left. I’m planning on going back to school to study physics and astronomy to hopefully make my mark on science one day. Thank you so much for the inspiration, and never stop reaching for the stars :)

@tappajaav 9 ай бұрын

So how's your plan on going back to school going

@falconcarwash435 3 жыл бұрын

Honestly this Channel is amazing. I don’t know where you get you digital/visuals from but it looks amazing. Also, the soft, distant drone like music goes perfectly with your voice over, and adds a remarkable sense of desolation. Best of luck in your efforts. I’ll keep coming back to watch!

@sea_space 3 жыл бұрын

Thank you so much! If you want to know about visuals, I make them in a program called Space Engine which is available on steam. It’s really cool, it’s a full virtual universe simulator which allows for graphics like that so I would highly highly recommend it if you like this sort of stuff 🙂

@donaldjohnson257 3 жыл бұрын

@@sea_space......I certainly didn't expect "really cool" from the SEA man!.....but it's cool!

@rocky3027 Жыл бұрын

I watch videos like these before bed so I can dream of space.

@WhiteGandalfs 2 күн бұрын

So for the record: At the time of making this video, astronomic parallax angle measurements are in the accuracy range of 10^-7 radiant (16 light minutes / 400 light years). That allows for hope that parallax measurements based on movement around the galaxy (which is about 20 times as fast as the wiggle around the sun) will give possibilities to measure further out stars up to distances of 20*(number of years over measurements)*400 ly in the long run with the same technology level. Of course only for stars that are not moving with us in our neighborhood. For stars at the opposite end of the galaxy, since those at the same time move in the opposite direction against the background, the measurement reach (or its accuracy) is extended even twice as much. Thus, with long term mapping projects like gaia, we will get parallax measurements of the majority of stars in our galaxy and its surroundings at least after a few decades. What makes these supergiants so impressing (for "normal" people like me) is their fluffiness: They have already extremely thin AVERAGE densities - at about 30 times the mass of the sun, but 10^9 times the volume of it, it's by a factor of nearly 10^8 thinner than the sun. That's nearly vacuum. At average. But since most of the mass is concentrated in the core anyways, the outer layers are really as thin as high quality vacuum that you would only get with specialized laboratory equipment on earth. Despite being sufficiently thick to be opaque at its size. Well, if you thoroughly let sink this in, there may even be other mechanisms at work that are not incorporated into the rough estimate formula for the radius of stars: If a star is NOT opaque as on the surface of our (in comparison highly concentrated) sun, it would be possible for radiation to be emitted at depths drastically deeper than on our sun. If, on our sun, the photosphere is about a few 100 km thick (estimates according to wikipedia range from 100-400 km), then the photosphere on a sun that is by a factor of 10^8 thinner than our sun, should be expected to be by a factor of 10 to the power of (8*2/3) thicker than that of our sun... ...Which leads to a state where the estimate formula for the radius of a star is possibly no longer valid, since the radiation is NOT emitted by a "nearly flat" surface, but rather by an extremely diffuse fluffy thingens, having a transparent radius of multiple size the radius of our sun. Or are there any obstacles that would prevent an extremely thin solar photosphere from being transparent? Nothing in the video, nothing in the wikipedia to that matter. Just asking for a friend... Thus, when reading about the size of stars, i would rather take those click baits with a grain ... or rather a whole clump ... of salt in mind :D

@jeremy1350 3 жыл бұрын

Yes SEA, I could listen to you narrate film for hours. Another "Stellar" video ! Yes, the info in this video is mind blowing, but once again, I don't think any of this video went over anyone's head, so to speak. Well Done. Again.

@dennistafeltennis1190 3 жыл бұрын

Just remember this: there is always a bigger fish.

@MegaAztec69 2 жыл бұрын

Well absolute excellent video. Thank you. I watch videos all the time on U Tube and have watched tens of thousands probably over last 10 yrs or more. I mainly watch Astronomy and Space related videos and as someone who is massively into Astronomy I already knew a lot of whats in the video, but not all of it. However thats not why I am commenting. I just wanted to say thank you for such a brilliant,informative and superbly presented video. There was thankfully None of the Hideously Loud music, No Gimmiks and Cartoon like Flashing images, No Screaming loud voice and best of all no adverts. If only all Astronomy related videos on U Tube were like ours. Excellent. I immediately liked, and subscribed and will watch all your Astronomy related videos from now on. Thank you.

@shadowsandfire Жыл бұрын

This is great and quite comprehensive! Thanks for sharing.

@Futuran123 3 жыл бұрын

Am I the only one who falls asleep to these kind of videos?

@techbrain8714 3 жыл бұрын

Yes and no, they don't put me to sleep during the day but come night...

@belstar1128 3 жыл бұрын

This is nightmare fuel.

@Futuran123 3 жыл бұрын

@@techbrain8714 I just fall asleep knowing Im nothing but a dust and my problems don't matter

@keithcarpenter943 3 жыл бұрын

Another truly amazing episode. This channel dwarfs others with it's content. Both informative and extremely interesting. Amazing. Keep up the good work

@davidanderson2357 Жыл бұрын

You might say it's the Stephenson 2-18 of astronomy channels.

@artdonovandesign 2 жыл бұрын

A MOST excellent science video. Truly educational. Thank You, SEA

@HemmligtNavn 2 жыл бұрын

you're voice is exceptionally pleasant to listen to; now I have to watch all the rest of the videos ;-)

@gocoronago4322 2 жыл бұрын

Our human life is privileged to learn these and know our position in the cosmos. On the other side, I feel this is information overload. Unable to comprehend many things out from one single video. I like it. 👍🏼

@NuSpirit_ 3 жыл бұрын

Good God - I clicked on this expecting some KZfaq BS video full of dramatic music, exaggeration and dubious claims at best. Instead I found a true gem. Thank you :)

@Zj3m555 2 жыл бұрын

I found your channel due to Gutsick Gibbon and I'm so glad that I did because it is so interesting and well produced!

@kozmosis3486 6 ай бұрын

Excellent video! Not sure why but your voice is very soothing and relaxing to me. I'm fighting the urge to take a nap even though this content is very engaging lol