Stars: Crash Course Astronomy #26
Today Phil’s explaining the stars and how they can be categorized using their spectra. Together with their distance, this provides a wealth of information about them including their luminosity, size, and temperature. The HR diagram plots stars’ luminosity versus temperature and most stars fall along the main sequence, where they live most of their lives.
Check out the Crash Course Astronomy solar system poster here: store.dftba.com/products/crash...
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Chapters:
Introduction: Stars 00:00
Stellar Spectra 1:07
Star Classifications 3:03
Why Are There No Green Stars? 4:00
Luminosity Depends on Size and Temperature 5:27
The HR Diagram 6:33
Main Sequence Stars 7:27
Other Stars on the HR Diagram 8:17
Review 9:50
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PHOTOS/VIDEOS
Stars www.nasa.gov/images/content/70... [credit: ESA/Hubble & NASA]
Spitzer Spectrum www.jpl.nasa.gov/spaceimages/d... [credit: NASA/JPL-Caltech/Leiden/SRON]
Sun spectrum www.noao.edu/image_gallery/ht... [credit: N.A.Sharp, NOAO/NSO/Kitt Peak FTS/AURA/NSF]
Annie Jump Cannon en.wikipedia.org/wiki/Annie_J... [credit: New York World-Telegram and the Sun Newspaper]
Cecilia Payne-Gaposchkin en.wikipedia.org/wiki/Cecilia... [credit: Smithsonian Institution]
OBAFGKM www.noao.edu/image_gallery/ht... [credit: NOAO/AURA/NSF]
Betelgeuse www.eso.org/public/usa/images/... [credit: ESO/Digitized Sky Survey 2. Acknowledgment: Davide De Martin]
Sirius www.nasa.gov/multimedia/image... [credit: NASA, ESA, H. Bond (STScI) and M. Barstow (University of Leicester)]
Solar AM0 spectrum with visible spectrum background commons.wikimedia.org/wiki/Fi... [credit: Danmichaelo, Wikimedia Commons]
Blue sky www.pexels.com/photo/sky-sunny... [credit: Skitter Photo]
Hawaii sunset photo [credit: Phil Plait]
Hertzsprung-Russell Diagram commons.wikimedia.org/wiki/Fi... [credit: ESO]
Пікірлер: 856
19 years old and I've finally learned the age old question, "Why is the sky blue?" this is amazing
You're a star, Phil.
@yourfriendlyneighbourhoodh4700
8 жыл бұрын
😂i was looking for this comment
@thewarlock539
8 жыл бұрын
Oh wow XD
@benjaminrobinson7203
8 жыл бұрын
No if he was we'd most likely be dead right now.
@yourfriendlyneighbourhoodh4700
8 жыл бұрын
Psychedelic Toaster common dude 🙈😂
@kravenmoorehead3824
8 жыл бұрын
YazeedSaber what happened to the other guy??
Phil you did in 10 minutes what my physics teacher could do in 4 hours ☺
@David-ys4ud
4 жыл бұрын
I mean he didnt go over the math at all. Just did a quick overview
@sadmanpranto9026
4 жыл бұрын
say 4 months...
@sunilvats4898
4 жыл бұрын
@@sadmanpranto9026 do you even think they will do in 4 months bit less 4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000 years
The editor did a stellar job. He is definitely the star here. I just wish it wasn't so bright.
@theunundunly5368
8 жыл бұрын
blackmesa232323 i see what you did there
@sharanski
8 жыл бұрын
blackmesa232323 his work shines through
@blackmesa232323
8 жыл бұрын
sharon I bet the office he works in is super hot.
@sharanski
8 жыл бұрын
blackmesa232323 it must be colored blue
@Sinnbad21
5 жыл бұрын
I hear he’s a bright guy. He makes these long video in a flash
I could watch Phil talk about astronomy all day long!
@lolpauve
8 жыл бұрын
nicjasno Well one episode is about 10-15 minutes long so wouldn't it be around 120 episodes for you to be able to watch him all day long? *OR* 60 episodes but you watch them at 0.5x the speed. Damn I'm such a freaking genius. You can thank me later.
@Oshbotscom
8 жыл бұрын
nicjasno What's weird is that he looks exactly like my old Algebra teacher, but yeah, good stuff.
@supernenechi
7 жыл бұрын
And I'm actually doing it...
@eppieeberly7376
6 жыл бұрын
same
@mclovin9151
6 жыл бұрын
Yea and you wouldn't learn anything, this is way more entertaining than it is informative
The intro was so freaking creepy! "Oh... I know who you are..."
@lfh950
5 жыл бұрын
no need to curse
@NemieShakingson
4 жыл бұрын
Khalisa P “freaking” is not a swear word
@succusage3966
4 жыл бұрын
@@NemieShakingson bruh why is this thread so dang slow?!?
@MrSvenovitch
4 жыл бұрын
@@lfh950 I'm sure you're also one of those ppl who doesn't mind a bit of death and destruction in movies but goes crazy about a naked boob. Sod off.
@robadog
3 жыл бұрын
i hate it but ahhhhhh i dont know (i like the video because of it) I'm sorry
OBAFGKM: Only Bad Astronomers Forget Generally Known Mnemonics.
@BullShitThat
8 жыл бұрын
Nillie Oh don't be a salty girl, or you won't get kissed ;) ...OBAFGKMLTY?
@ragnkja
8 жыл бұрын
BullShitThat "Later, Thank You"?
@BullShitThat
8 жыл бұрын
Nillie That kinda works for the old mnemonic, but not the one you're using.
@ragnkja
8 жыл бұрын
BullShitThat I know. =)
@bartonpaullevenson3427
5 жыл бұрын
Only Boring Astronomers Find Gratification Knowing Mnemonics.
Annie Jump Cannon. Possibly the best name in history.
the diagram shows how stars die. so it's actually a dieagram?
I love those Kerbals on his table XD
@Adrenolex
8 жыл бұрын
Lord Zephyros ~200 bucks, theyre 3d prints
@ahmadnoor3049
8 жыл бұрын
Lord Zephyros
@shadowseek27
8 жыл бұрын
Adrenolex well in total that is
@keysontrains538
8 жыл бұрын
Nick baker Me too :D
These astronomy videos, are some of the videos on youtube I absolutely look the most forward to! I am getting quite a strong passion for physics and especially astronomy, and these are great to help improve and brush up some of my knowledge on the subjects! Keep it up!
Without a doubt, one of my favorite topics in astronomy. I can't wait to see all the remaining detail. This is basically the topic about the ultimate ancestors of all life on Earth. And Earth itself.
This is seriously my favorite topic in astronomy. And I'm so glad you are making whole series on astronomy. I'm gonna watch it even when I'm on my death bed :) and my friends and family are going to tease me and call me geek/nerd.
I keep coming back to this video! I just adore stars.
@messionrlfifa6592
7 жыл бұрын
James Madison bro I am cramming on a test about u smh
@Codiliabra
7 жыл бұрын
singsinging sang I'm pretty amazing.
@messionrlfifa6592
7 жыл бұрын
James Madison ur ruining my life
@messionrlfifa6592
7 жыл бұрын
Nah I'm just playin
As a non-native english speaker, I had no idea Betelgeuse is pronounced "Beetle-juice" in english. In my language(Russian) it's pronounced "Betel-gay-ze""
@TheLightStudios356
8 жыл бұрын
May you spell it is Cyrillic please?
@K1z0ku
8 жыл бұрын
Бетельгейзе
@TheLightStudios356
8 жыл бұрын
Hideki Hoshino Спасибо
@Faarax96
8 жыл бұрын
It's actually an Arabic word,only the Arabic pronounciation is really correct,.
@K1z0ku
8 жыл бұрын
And how is it pronounced in arabic?
I'm a truck driver I was just curious the distance of the Sun and the Moon related to the Earth this channel rocks I had to subscribe
So she was named Annie Jump Cannon? Are we sure she wasn't also a superhero?
@Zerepzerreitug
8 жыл бұрын
or a pirate
@Master_Therion
8 жыл бұрын
Arturo Gutierrez or a circus performer (shot out of a cannon)
@andrewdoubleu
8 жыл бұрын
Or the name of a band
@z-beeblebrox
8 жыл бұрын
Alfredo Marquez Not only is it an awesome name, but it was the product of pure serendipity as well. Her father's last name was Cannon, and her mother's maiden name was Jump.
@Bird_Dog00
8 жыл бұрын
Alfredo Marquez Whatever she was, she surely jumped the gun...
"For Science!" XD
@totalunknown513
8 жыл бұрын
Arturo Gutierrez i laughed pretty hard there XD
@Corazon806
8 жыл бұрын
I had to pause the video to laugh lol
@XOsuperior
8 жыл бұрын
"The Astronomical Unit"
A year after my degree in Astrophysics these videos are a great way to make sure that I remember some of the keys facts that are a part of this amazing subject! Thank you!
I'm just glad to hear there's going to be more episodes! I've been interested in astronomy for well over 10 years now and yet I've learned a bunch from this Crash Course series. Keep making them and make them long!!
These videos are such a big help for my astronomy class. You basically covered all the topics I need to study from my chapter.
Thank you so much for this series! I'm taking a random astronomy class and you explain things simpler than my professor does! EVERYTHING MAKES SENSE NOW
By far the best series on astronomy on KZread!!!
red stars are cool
@MilanTheAngel
8 жыл бұрын
i was looking for the planet Vegeta video
@SinHurr
8 жыл бұрын
The red star isn't going to help you beat Superman.
@MilanTheAngel
8 жыл бұрын
hksin11186 beating kakarot is my priority
@SinHurr
8 жыл бұрын
Vegeta Good man. You handle him. I'll look after your wives.
@rafaelalexie2417
8 жыл бұрын
Vegeta retards are cool
Anyone watching this during the 2020 lockdown?
I got into astronomy at a young age. In senior year, I used to watch astronomy videos everyday. AWESOME CONTENT IN THIS SUBJECT!!! What's even better, crash course makes astronomy even more interesting. Thanks crash course
Phil--your limitless passion for Astronomy is ever-appreciated.
Keep teasing as much as you want as long as you keep making videos FOREVER. I love this series sooo much. Great video!
looking forward for the next videos!
Another interesting video, I love this series. Keep them coming!
this has to be my favorite crashcourse, phil is just awesome you can really sense how much he loves science and astronomy, plus he's such a great narrator and great at explaining everything without dumbing anything down, easily one of the best things i look forward to each week, thanks for all your hard work!
"On a brighter note,..." No one else catch that? No?
I'm taking Astronomy 115 as a college freshman, and these videos are how I study for my midterm on Friday! Thanks so much
Wow, this was an incredibly informative video, probably the most informative 10-minute video I have ever seen! It helped me understand a whole chapter for my science test, I couldn't thank you enough for making this video.
this is my fav youtube show thank you so much 🔮
A funny tease about Annie: Annie jumped into a cannon and got shot up to near the sun where she discovered that the sun emits different colors than other stars cuase of spectra!
"There are no green stars. Look as hard as you want, and you won't find any." -Me in Super Mario Galaxy 2
@eparhas9162
5 жыл бұрын
same
I love your videos Phil! It's great to learn so much from somebody with so much passion about the subject. Thanks
Amazing opening. Probably one of my favorites. Seriously
I look forward to this series every week!
i gotta say i LOVE THIS SERIES SO MUCH!!!!!!!!!!!!!!!!!
1:06 that... sounded crazy with headphones
He is just amazing. Make things super easy.
The intro got me hooked I already like this guy !
What an amazing explanation 🎉
CrashCourse definitely keep including more of the history/methods of astronomy in the episodes! It's making them much more digestible than some of your 'objects of our solar system' videos which had little to none.
watching the series a second time, about a year down the road. Amazed at how much I'd missed the first time around. Definitely worth re-watching (at least for me :) )
I love this series so much!
Explaining things for surface information lovers. For those who do not concern themselves with in-depth knowledge, this kind of video is very fulfilling.
amazingly beautiful video. Thanks Prof
i'm literally watching these videos on repeat tryna cram for my cosmos final tomorrow. this is so helpful
Thanks for posting this informative course. Stellar performance by Phil Plait.
Awesome series appreciate your efforts.
I really enjoy watching these videos. You the man Phil
Great crash course. Very clear and articulate.
This helped me so much to understand stars. I have a sub for science and we only learn from the textbook, which is clear, but I got confused when the sub kept on messing up what she was saying. Even after almost five years this video’s still helping people!!
I can't thank you more, I really learned a lot from my quizzes! Wish me an A+
I finally understood what Main Sequence meant when I play Spore.
You are the best. I love learning from you because you have the best teaching style for me so when I grow up I have more experience of how astronomy works because of your amazing teaching.
oh! I love the way he started this video.
I came across this video and I stayed only to feel so good when I reached 9:51 where he recaps what he taught today. 5/5 stars rate my friend!
I always love hearing about all the brilliant women that were such strong forces in earlier astronomy! :3
I love this course so much! And Phil!
Ton of really cool information in a very concise vid. Thanks!
I can't believe that I'm just running into this for the first time. This is a great series.
Your awesome Phil! Ty for all you do; I've home schooled for two years and this was my first year using you! I wish I found this sooner. WOW your awesome! I've always loved astronomy; but now i love it even more!!!! thank you for all you do I appreciate you soooo much! THANK YOU PHIL!!!!!! Sincerely, Brianna :)
Excellent episode, don't take too long to go into the stages of a star life/fusion cycle
This was a fantastic video, Phil!
I love this show. Thks, CC.
Don't ever end this series!!
That was the best intro yet!
And congrats on the 6M subs
I love this series!!!!!!!!
This serie is awesome!!
this video definitely enlightened me
Stars have always been a hot topic, a real gas. You can bet I'm giving this video a glowing review.
I love this, I can finaly wear my hat while learning
That intro made my night! Super funny! I can only hope for more :)
This course is amazing
Can't wait for those future episodes.
You got a little Heisenberg on that opening shot! Thanks for taking the time on this subject, it was definitely worth the full episode. Looking forward to the future star talk. Thanks!
You are so good at explaining stuff
Phil, you are the best video host on KZread right now !
first decent-to-awessome science assignment ever!
Amazing explanation!!!!
I love learning from Phil
Legends seeing this now
6:42 luminosity and temp (Its the reason why im here so i thought it might help u guys)
Thanx man! u are helping me study for my final with all the cool vids 😎.
Such a sick video! Light is so interesting!
Love having breakfast in front of crashcourse, dunno why :p
Thank you this helped me a lot and learned more things about stars and their luminosity and temperatures. sadly there are no green stars and gree is my favourite color. but the whole video is so good
"Jump Cannon" is easily the second-most badass name I've ever heard. It doesn't even sound real!
My fav series
you guys are awesome! Keep it up!
excellent, as usual, for Crash Course
*_What a thumbnails you pick for you videos, amazing... Wonderful thumbnails_*
Phill did you hear NASA found a new planet that is very much like Earth!?! Astronomy is so awsome! Thank you very much for this CC! It really got me so hooked into the subject!!
@theutopianoutopioan464
6 жыл бұрын
Mauro De Simone, We don't know wether or not any of the exoplanets that have been found are really Earth-like, but it's theorized that at least 6 of the planets we've found are like Earth, possibly with living things
I wish Crash Course Astronomy never ends!
"Twinkle Twinkle Little Star, oh I know who you are!!" was sparkling , our star Phil.🌟🌟