How Old Is It - Chapter 5 - How Old are Stars (4K)

Text at howfarawayisit....
Credits at howfarawayisit....
Music Free Version at • Classroom Aid - Star A...
at 23:26 calculation error. S.B. 40.1N = 9.01 pounds
In this chapter of the “How Old Is It” video book, we’ll cover stars - second generation stars. We start with giant molecular clouds and what may trigger their collapse into star clusters. We’ll follow their size, density, and temperature as they move from hydrostatic equilibrium to fragments to stars. We’ll then follow the collapse of a fragment capable of creating a star like our Sun. We’ll cover how circumstellar disks around central massive objects are formed. We’ll cover the Protostar phase and examine a few like the ones in the Eagle Nebula and Orion. We’ll cover T-Tauri stars, their properties, and examine several including T Tauri itself, XZ Tauri, and others. We’ll cover how these giant molecular clouds form Open and Globular clusters and how Field Stars like our Sun have left their starting clusters. We’ll follow stars as they start burning hydrogen and migrate to the Main Sequence on the H-R Diagram. We’ll take a deep dive into the hydrogen fusion that powers stars. With a focus on our Sun, we’ll compute proton collision and fusion rates. In order to understand the mass-luminosity relationship better, we’ll cover the Coulomb Barrier and how Tunneling through it works. And finally, we’ll examine what happens to a star once it runs out of hydrogen fuel.
Music:
@00:00 Giordani, Giuseppe: “Caro Mio Ben” - from the album “Meditation: Classical Relaxation” 2010
@06:56 Chopin, Fryderyk: “Prelude in E Minor, Op. 28, No. 4” - from the album “Chopin: The Romantic World Of Chopin's Piano, Vol. 3” 2000
@10:39 Puccini, Giacomo: La rondine: “La rondine, Act I: Doretta's Aria (arr. for flugelhorn and brass band)” - Grimethorpe Colliery RJB Band with Peter Parkes from the album Grimethorpe Colliery Band: Melody Shop (The) 1998
@14:09 Gluck, Christoph Willibald: “Dance Of The Blessed Spirits (from Orpheus and Eurydice)” conductor Herbert Kegel from the album “Meditation: Classical Relaxation” 2010
@24:33 Schubert, Franz: “Andante con moto (from Symphony No. 8)” - Conductor Janos Kovacs; from the album “Meditation: Classical Relaxation” 2010

[@VDP207]

Admit it, this is your favorite astronomy channel on YT.

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Easily

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I could listen to this guy talk indefinitely. So relaxing and so well explained

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These videos have helped with my depression. Really gives you some perspective.

[@alexburke1899]

Yeah when I really need to stop feeling sorry for myself I often listen to world war 2 audiobooks. It’s kind of a form of cognitive behavior therapy to give you perspective. Cosmology and astrophysics are obviously good for shifting your perspective too so good point. Hope you are doing well depression can be very difficult as you know, I struggle with it myself.

[@johnshields6852]

The distances, the time, the chemical reactions, the coalescing of the planets and birth of the stars is mind blowing

[@howfarawayisit]

John, Thanks for all your comments. I'm glad you're getting a lot out of the video books.

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I love your presentation. I love that each series has the HOW title, reminds me of old educational books i had as a kid. In fact you bring back a wonderful youthful feeling of a hungry mind.

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I have always been terrible at math but have the upmost respect for those who are great at it. I may be wrong, but physics seems to be the closest thing to a crystal ball that sees the future that humanity has.

[@Lifeguruonafence]

Finally an American with a voice you can actually listen to without getting a headache and who doesn’t begin every video with the phrase “yo what’s up guys” 👍🏾

[@talotalo1192]

American?

[@playbackproductions1]

He's Albanian, dude. You'd better SMASH that like button

[@debtsucks5848]

@@playbackproductions1 Well - - with a name like David Butler and speaking English with no accent I would assume American by birth also. I guess I'm German/Dutch and English then.

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@@debtsucks5848 FULL ON ALBANIAN. Like, Comment, and Subscribe!

[@EpicCrust]

Apart from the clicks I can hear when talking lol

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anyone else watching these before falling asleep?

[@edwardromano4851]

Yep

[@Scott-eo7lj]

Every night.

[@rogerstone3068]

Yes, but how much better is this than the hundreds of videos where the presenter feels a need to express amazement and excitement, as if the subject needs sensationalising in order to retain our interest? (And to dumb-down the explanation and repeat each part three times.) Just watch it again when your focus is back in alert mode. David, don't change a thing.

[@sigmamale520]

aww

[@enigmaticloremaster1700]

if you are falling asleep from boredom it is possibly due to the fact of an inactive mind.

[@MyAvitech]

Thank you Mr. Butler. I love these video series. Very easy to understand and not full of BS filler talk or in video sponsor ads pleading for me to sign up for some expensive "make you smarter" web site, nor does it have obnoxious video opening or closing sequences.

[@rogerstone3068]

And no intrusive catchy jingle-tune music!

[@billkendrick1]

For real

[@triggerhappyjay4794]

*Holy Shoot* *You Actually Uploaded I Had To Stop Everything I Was Doing Just To Click On This , You Are Definitely A Legend And An Idol To Me Believe It Or Not Much Love David Butler & I Hope All Is Well* 🙏🏻

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word

[@TheGunmanChannel]

*Bold*

[@triggerhappyjay4794]

@@TheGunmanChannel love the channel , keep up the great work also bro

[@DanielVerberne]

Sir/madam, your writing is fascinating.. so many words with capitalised first letters… almost mesmerising.

[@alivohereiam3780]

Hello David, Thanks a lot for your work. I was waiting for this one and can't wait for next ones.

[@philippejacquot9270]

David for world president, man you are amazing, every episode, im literally speechless, I consider myself reasonably well educated, but you teach me so much. keep it up, thank you David

[@shelleyboris5453]

I love the pillars of creation at the start of this video the mathematical precision of it all there is a creator like a house has a builder so does the universe!!!

[@ksingh7149]

Thank you very much sir 🙏 👍 😊 .

[@jamesselario2524]

How does your channel only have 75kish subs? This is some of the best educational information on Astronomy/Physics out there. Your work is phenomenal. I wish this was around when I was a student.

[@DyingToLive12]

Because only 75kish people subbed. each sub counts as 1, so 75kish equals 75kish subs. hope this helps.

[@bokhans]

James Selario maybe because some 300 million Americans believe earth is 6000 years and will never subscribe to a channel like this.😉

[@aditya_saha]

@@bokhans aren't 1/3rd Americans Athiests

[@MrNeelpandit]

@@DyingToLive12 thanks I didn’t understand before :)

[@debtsucks5848]

@@bokhans Uh.......No.

[@DawitTadesse-ld8hr]

This was so informative. Excellent video again.

[@CopperCityPatriot]

Whenever completing a David Butler video, no matter the outside temperature, as long as the sky is clear, I just go outside with my large binoculars and my 8" telescope, and enjoy the stars. That explains the frostbite, every Winter.

[@praveeen1988]

I love all ur video books. I treasure it. It's indeed a treasure for human kind and future generations. Thank you for your Noble work.

[@uno-tu9xx]

Great to see you back. Thank you so much for the very interesting and informative videos

[@HebaruSan]

I thought from the title this was just going to say "billions of years," instead I learned how stellar fusion works

[@debtsucks5848]

Nailed it.

[@catschase247]

Some astronomy/physics presentations in KZbin seem too dumbed down as if intended for preschoolers, some are pure hype and obnoxious jargon, intros or bumper music. Even the more academic videos are tedious, filled with math, technical mumbo jumbo or simply unbearably long. Then I came across one of your works and, to my surprise, everything I ever wanted in a science video I found it in yours. From How Small Is It to How Old Is It and every other video you've posted have been a most valuable tool for the understanding of science for a dumb peeson like myself. Thanx so much, David. Keep it up .

[@josephhall7731]

This channel is one of the best for learning, also very entertaining, please keep uploading David and thanks.

[@whatsamatou6915]

David I stumbled upon your channel about a month ago I absolutely love your videos you're doing a great job my man!!!

[@frl8031]

Outstanding video. We just love your shows. Please keep them up as long as you possibly can. They'll be relevant for many hundreds of years

[@kkgc5760]

Love your videos so happy to see another upload! I listen to your videos before sleep i dream about stars is wonderful.

[@andrewyang1446]

A fireplace lit by a grandfather I never knew. Thank you. (What came to mind the first few seconds after listening to the voice!)

[@KosmicKoheiAspiringAstronaut]

These are some of the questions I ask myself as well. I am an aspiring astronaut and I really love to learn through your content.

[@elizabethorman86]

I'm so happy to see another video from you! What an enormous pleasure! Thank you, and I hope you are able to continue.

[@LetsFindOut1]

you're content's detail and easy-listening is a huge inspiration for my channel. thanks David. I'm sure Sagan would be proud of your content.

[@gianPI7381]

as a stand alone video, this is the most informative ever held. mesmerizing. anyway, chapeau to the likes of FRESNEL, BOLTZMANN, MAXWELL... real geniuses of the XIX c.

[@Christabbaword]

Isaiah 14 13You said in your heart, “I will ascend to the heavens; I will raise my throne above the stars of God; I will sit enthroned on the mount of assembly, on the utmost heights of Mount Zaphon. b 14I will ascend above the tops of the clouds; I will make myself like the Most High.” 15But you are brought down to the realm of the dead, to the depths of the pit. 16Those who see you stare at you, they ponder your fate: “Is this the man who shook the earth and made kingdoms tremble, 17the man who made the world a wilderness, who overthrew its cities and would not let his captives go home?”

[@Machistmo]

Uhm why here?

[@kirbymarchbarcena]

I really enjoyed watching this despite that I got lost at the equations.

[@chris7brook]

Best explanation.

[@virgilmccabe2828]

I’m certainly a fan 🤩

[@More-Space-In-Ear]

One of the best places to learn on earth. Thank you David. 🏆👍🏼😊😉

[@StasiSLG]

Mr. David, thank you for the video. Much love and respect :}

[@JAKOB1977]

This is like a candy store of knowledge... your edit and graphic are topnotch and some of the best on youtube on this topic.. One happy new subscriber here' that I found this channel and with a bunch of older videos I will see over the coming weeks. Cheers from Denmark.

[@gauravbabar1109]

I have no words ... Video is jus Beautiful.!

[@promerops]

Superb knowledge transfer, with a subtle dressing of gorgeous music. Thank you!

[@ResourcefulNomad]

David, you present the subject in an easy to understand way for the lay person with cultural references and music selections that add to the enjoyment of your lectures. I’m taking a college level course that assumes an intelligent audience with a basic grasp of science and culture in general. Thank you.

[@redriver6541]

Thank you Mr Butler. Another excellent video.

[@adamslosar2177]

I know you won’t see this, but I wish I knew you so we could visit. I love every video. I wish I could go back in life and study this ....

[@howfarawayisit]

Adam, I do see it. Thanks.

[@DK-op3nx]

I enjoy the soothing wisdom of your voice.

[@yoso585]

My little pea brain was able to hang in there like a pro through this one. Most often, not so.

[@constpegasus]

Good to see you back.

[@0000moonli]

This is the best channel to learn about the universe! Thank you!

[@JetskiDex]

Thank you soo sooo soo much I pray you get to the recommended page with the algorithm. Your simply the best. I use this to sleep eveynight, I carnt get enough of them.

[@vermili0n]

This is the video I’ve been looking for recently. I’ve wondered how star formation works. But what I don’t understand is how large the first stars have to be to create these gigantic nebulas. Or were many of these large nebulas created by multiple star explosions? For example 30 Doradus is 1000+ light years across, how can a single star explosion create such a massive nebula like this? And wouldn’t it be forming stars very quickly which would just be colliding all over the place and making more of a mess? Space is such a strange place….

[@howfarawayisit]

It takes lots of stars making lots of dust over lots of time to form a nebula like this one.

[@AshTheMohican]

Thank you for making this mr. Butler, fascinating information! Greetings to you and yours from Holland.

[@kenshin73himura70]

I have spent the last 2 days watching all your videos, I can honestly say I'm less ignorant than before... Thank you.

[@justachick9793]

So excited to see a new upload from you! Thank you so much for all of your excellent work, it's absolutely among the most informative, intelligent content on KZbin.

[@triggerhappyjay4794]

Facts .

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I've learned and have had many questions answered from this KZbin channel. Great content.

[@HaloArtistderrickmoore]

Thank you

[@maciejturski1976]

Regards from Poland! I follow you for some time already. Great job!

[@dino575]

Loving your videos - beats the now chronic discovery channel :) thank you ! )

[@MAMP]

Top notch KZbin content.

[@Tom_Quixote]

When watching these videos, I'm not sure whether to feel peaceful or overwhelmed by a sense of cosmic dread.

[@Brett_S_420]

Small enough to be barely measurable, yet we can be important enough to make things better for an entire planet. I am tryng to make things better for at least one sentient being every day. That seems to be enough. Bonus points for anything more beyond that. It's about perspective.

[@vishalbhalerao1232]

One of the best channel on KZbin. Thank you sir !

[@soin74]

A beautifully detailed description, your videos are always a treat.

[@SabirHassan]

good job dear

[@An0nim0u5]

Where's my wine...??? Thanks for this sir... Cheers!!! :)

[@An0nim0u5]

I have never seen anyone explain Quantum Tunneling so articulately... I did not even know that tunneling needs to happen for nuclear fusion...

[@grasakfairy8969]

Ahh! A new post :) Thank you David :)

[@ricardocalderon1721]

David until a week ago I found out your amazing and interesting videos and now I realice they are useful and very well done. They are superb so thank you very much for them.

[@rouser_bro9859]

What a great video Mr. Butler. Thank you.

[@T1000-s4j]

Missed you David 😭😭😭 your videos are the best by far 🏆

[@_John_Sean_Walker]

Thank you professor sir. I'm so happy with this new video. I especially like the LRLL 54361 "movie" because we usually only see our own planets and commets move.

[@bradrainwater8056]

If u could go at least 180+ thousand miles a SECOND. It would take you a year to get there. That is what a light year means. If the sun turned off like a light switch we would still see the sun for 8 minutes. The sun is miles away. The nearest sun after our sun is light years away. Cars go 70 miles an HOUR. We are quantumly Small. And yet so big compared to the very small. Welcome to life and to your everything.💖⭐️☮️🌹. Just think how wild it is that our moon never shows the back side plus it cover our sun perfectly. Stay full of wonder and pass it on if u want to. Rock the space!🌹☮️💜⭐️💚⭐️💜☮️🌹💖🦋

[@DanielVerberne]

Wonderful and relaxing content, thankyou David.

[@DanielRamirez-li6zc]

Such a great video.. Awesome narrator and I love the background symphony

[@Marc98338]

David, you've taught me so much. Thanks alot.

[@gitarist25]

such ASMR gold...

[@sclogse1]

Wait a minute, you're forgetting TingTing's Chinese Princess!

[@ankss4972]

Random not so smart girl who has no dressing sense can have 1 million subscribers in no time. Channels like this which are better then commercial documentaries out there have only 119k? I’m glad I found this channel and sad that I found it 2 years later of its coming into existence. I often watch universe related videos (been doing since 2008) yet KZbin is showing this to me in nov 2020. KZbin started back in 2006 with the idea to share informational videos not freakin pervertish or dumb stuff.

[@no_more_free_nicks]

Excellent information, thanks!

[@byaafacehead]

Awesome! Thanks for creating this

[@mikeewhite]

Than you for another great video!

[@ilyas9555]

Thanks sir David Butler

[@Dvarable]

You’re fantastic! I love listening to your work sir.

[@marijanap.r.8519]

Love all the videos and looking forward to the 2019 review!

[@kakhak]

Thanks, David! Extremely pleasant and informative and interesting video.

[@petergreen5337]

Thank you publisher, very good and helpful

[@treasurecave431]

I could take a glass of whiskey/rum and listen to dr butlers classes all day

[@jordanmichael3480]

Isaiah 40:26 “Lift up your eyes to heaven and see. Who has created these things? It is the One who brings out their army by number; He calls them all by name. Because of his vast dynamic energy and his awe-inspiring power, not one of them is missing”.

[@jonnyl5442]

Falling asleep under the stars in a whole new way. G'night.

[@reintsh]

Very good explanation! But what a pity that it says "degrees Kelvin". It should be just "kelvin". No degrees.

[@ThePandora1]

I love watching your videos! But once in a while I fall straight to sleep 😴 lol

[@andrewrivera4029]

I love your longer videos.

[@petergreen5337]

A good clear scientific lesson thank you

[@petitburger]

Thanks for doing what you do. It's awesome.

[@no_more_free_nicks]

Hi David, I'm waiting to see your new video. Yours are ones of my most favorite, for me it is the same level of information as PBS Space Time, or Science Asylum.

[@dharmajimahender983]

Thank you sir

[@simonpender8331]

Very interesting lecture, thank you.

[@yehlamhaa]

Great work Sir.. Simple and easy to understand.. Waiting for your next video ... Can you please add more information on your Colliding Galaxies video..

[@enclave2k1]

New favorite channel. Where have you been all my life? Subbed Liked Favorited Clicked the bell

[@natemickens88]

Forgot I subscribed to this channel. How long since the last video. Stars are hot.

[@josemarlunguinhodesousa2230]

this channel is de beautiful project

[@qin6563]

From Qur'an : The star chapter : 53:1,2,3,4,5 ALLA swear by the star when it death ، ( I think black hole ) , In the Name of Allah, the Most Beneficent, the Most Merciful. By the star when it goes down, (or vanishes). 1 Your companion (Muhammad SAW) has neither gone astray nor has erred. 2 Nor does he speak of (his own) desire. 3 It is only an Inspiration that is inspired. 4 He has been taught (this Qur’ân) by one mighty in power [Jibrael (Gabriel)]. 5 *{ Jibrael. ( Gabriel) is the greatest angels ،} Thanks for your video sir ,professor David Butler ,

[@Earthneedsado-over177]

It's alla bunch of bull.

[@qin6563]

welcome my friends, (1) because this channel and Mr professor David Butler are respected, So I hope we are so 2)If anyone insults Allah, Muhammad or the Qur'an, I have not given answers, You can insult me ​​but don't do with any religion, (3), and you must know that Mohammad said "Moslem not lie or insult", I do, and you must do, temporarily, (4) Because the Qur'an came in Arabic understood by the Arab Muslims only so Allah ordered us to inform others about the Qur'an, so that they only know, People are free to believe or not, ** Until we get a useful discussion useful, ** let us make agreement: 1) We are free, we leave intolerance, temporarily, 2) We must appeal to our minds to follow logic, fair, serious, do not lie, do not insult 3) I hope you have information about the numbers in the universe such as distance, speed, attraction, (Earth's and moon's giravity ) ,,,,, etc. 4) When I want to prove , I begin with ask you for numbers and then you answer, or you ask your friends ,or teacher to give his answer, until you believe what I say, otherwise do not accuse me of lying, I do not like this, no problem if you don't know ,I will till you if you agree, I am ready to begin, I wait , Thanks ,

[@An0nim0u5]

The translation says when it descends (hawa) and not when it dies... Most probably talking about the Sun when it sets and vanishes... Like everything else in the Quran this verse is just what it appears to be; an observation and nothing else... It is as ambiguous as any other verse explaining NOTHING about the nature of the Universe... So for you to bring this up is just stupid... Don't get me started on the scientific errors in the Quran...

[@qin6563]

@@An0nim0u5 Prove to me first that you are fair, respectful, logical, not fanatic, Serious ، look for the truth to follow it , The discussion gives the result, not the loss of time ،not insult, if you do I will explain to you, So I don't explain for nothing ,

[@An0nim0u5]

@@qin6563 I don't know man what you are on about... Which discussion and what results...??? Explain to me where do those verses talk about blackholes or anything discussed in the video...???

[@DanielVerberne]

Could a proto-star stall before continuing it’s journey to a star proper?

[@howfarawayisit]

Star forming is quite the chaotic process, so maybe.

[@desiderata8811]

I predict that before brexit the British parliament will approve a law obligating David Butler to make a video every 15 days, with at least 20 min.

[@paxanimi3896]

HoldTheEarth. Mr Butler, is this law needed ?

[@rogerstone3068]

When you say "before Brexit the British parliament will..." you run foul of the Uncertainty Principle. It is impossible to know both the state of the matter and the time, simultaneously.

[@cjones1499]

At 5:12 you mention that the Small Magellanic Cloud is orbiting the milky way. It isn't. Studies have shown it is merely brushing past us for a billion years or so before heading off into intergalactic space.

[@guiantonio5248]

Hi from Brazil

[@StephenMortimer]

So interesting a Brazilian would watch this .. maybe there is a future for Brazil So hello from the United States of America to the Disunited States of Brasil !!

[@StephenMortimer]

that's a JOKE

[@sclogse1]

@@StephenMortimer William Barr is on his way to see you, Casper.

[@StephenMortimer]

@@sclogse1 I'll give him a good cup of Brazilian coffee

[@triggerhappyjay4794]

@@StephenMortimer lol chill , but I low-key agree that there is hope also . Shout out to Brazil all the way from The States god bless it