Star Clusters: Crash Course Astronomy #35

Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of clusters, though. Open clusters contain hundreds or thousands of stars held together by gravity. They’re young and evaporate over time, their stars let loose to roam space freely. Globular clusters, on the other hand, are larger, have hundreds of thousands of stars, and are more spherical. They’re very old, a significant fraction of the age of the Universe itself, and that means their stars have less heavy elements in them, are redder, and probably don’t have planets (though we’re not really sure).
Check out the Crash Course Astronomy solar system poster here: store.dftba.com/products/crash...
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Chapters:
Introduction: Star Clusters 00:00
Determining the Age of Star Clusters 2:04
Open Clusters Evaporate 3:23
The Pleiades Star Cluster 4:27
Globular Clusters 5:50
Review 9:25
--
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Support CrashCourse on Patreon: / crashcourse
--
PHOTOS/VIDEOS
Magellanic gemstone in the southern sky [NGC 290] www.spacetelescope.org/images/... [credit: European Space Agency & NASA]
Extreme star cluster bursts into life in new Hubble image www.spacetelescope.org/images/... [credit: NASA, ESA and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration]
View of a Sun-like star within an open cluster (artist’s impression) www.spacetelescope.org/videos/... [credit: NASA, ESA, and M. Kornmesser]
Motion of stars in Omega Centauri www.spacetelescope.org/videos/... [credit: NASA, ESA, J. Anderson and R. van der Marel (STScI)]
47 Tucanae: Probing Extreme Matter Through Observations of Neutron Stars chandra.harvard.edu/photo/2013... [credit: NASA/CXC/Michigan State/A.Steiner et al]
Hubble Refines Distance to Pleiades Star Cluster hubblesite.org/newscenter/arch... [credit: NASA, ESA and AURA/Caltech]
M45 Pleiades www.noao.edu/image_gallery/ht... [credit: T.A. Rector (University of Alaska Anchorage), Richard Cool (University of Arizona) and WIYN]
From the Pleiades to the Hyades www.deepskycolors.com/archive/... [credit: Rogelio Bernal Andreo]
Messier 035 Atlas Image commons.wikimedia.org/wiki/Fi... [credit: Two Micron All Sky Survey (2MASS), a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation]
Globular cluster 47 Tucanae www.spacetelescope.org/images/... [credit: NASA, ESA, and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration]
The oldest cluster in its cloud www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA]
An unexpected population of young-looking stars www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA]
View of a globular cluster (artist’s impression) www.spacetelescope.org/videos/... [credit: NASA, ESA, and M. Kornmesser]
All that glitters www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA]

Пікірлер: 642

  • @Shirokroete
    @Shirokroete8 жыл бұрын

    I just realized, this video series entertains me for months now and I never did anything for appreciation. Now, I just wanted to say thank you for this video series. Always when I felt down I was happy to see there's another Crash Course Astronomy episode out. The host is a really likable personality and it's uplifting to see him talk about his passion.

  • @Iruparazzo

    @Iruparazzo

    8 жыл бұрын

    +Shirukröte I agree, these videos actually make me happy and well cheered up when I see them in my feed, ty CC and Phil Plait

  • @PaulaBean

    @PaulaBean

    8 жыл бұрын

    +Shirukröte If you like this series, you'll love Phil's books. I have two: 'Bad Astronomy' and 'Death from the skies'. Both excellent reads!

  • @RJ-mj4sh

    @RJ-mj4sh

    7 жыл бұрын

    Shirokröte (^^)

  • @lionn420

    @lionn420

    5 жыл бұрын

    i love this series, you're absolutely right about the presenter, i also like the world history presenter and the host of PBS spacetime. their all incredible videos and presenters. i have 3 teacher friends who use them in their classes. 2 elementary and 1 high school.

  • @nathanbickel3916
    @nathanbickel39167 жыл бұрын

    Is anyone else just interested in astronomy and binge watching this?

  • @Jazzimus

    @Jazzimus

    5 жыл бұрын

    Ye

  • @getjdizzled

    @getjdizzled

    5 жыл бұрын

    yes, this is a great series

  • @assassingio9847

    @assassingio9847

    5 жыл бұрын

    Me

  • @assassingio9847

    @assassingio9847

    5 жыл бұрын

    @SMS I love Dragon Ball.It's the franchise that introduced me to the amazing world of anime so it has a special place in my heart.

  • @darrenanimatic9675

    @darrenanimatic9675

    5 жыл бұрын

    @kamal ks BORING?! USELESS?! THIS IS WHERE I GET MY DAILY DOSE OF ASTRONOMY, HATER!!!

  • @SupremeScience
    @SupremeScience8 жыл бұрын

    Best series ever.

  • @Tyronejizz

    @Tyronejizz

    8 жыл бұрын

    I disagree.

  • @vaibhavgupta20

    @vaibhavgupta20

    8 жыл бұрын

    +Chemistryisthegame History was also good.

  • @vaibhavgupta20

    @vaibhavgupta20

    8 жыл бұрын

    ***** didn't watch it. but economics is good.

  • @badastronomy

    @badastronomy

    8 жыл бұрын

    +Chemistryisthegame Thanks!

  • @kcvriess

    @kcvriess

    8 жыл бұрын

    +Vaibhav Gupta I figure that you've seen several episodes, or all maybe? The economics series that is. Is it a bit objective? Because I don't feel the need to be told that one economic system is better than the other. I just want to learn and form my opinion myself.

  • @deadasfak
    @deadasfak8 жыл бұрын

    Moral of the story? You can't live without heavy metal.

  • @sudeepjoseph69

    @sudeepjoseph69

    4 жыл бұрын

    yamma yamma pooku ki. I'm boji with mmoms in

  • @80s-wizard34

    @80s-wizard34

    4 жыл бұрын

    Lol 😂 🎸🤩🎸🤩

  • @PeterFrikadelle
    @PeterFrikadelle8 жыл бұрын

    Thank you wonderful people at Crash Course Astronomy for educating/entertaining me. That is all.

  • @crashcourse

    @crashcourse

    8 жыл бұрын

    +Peter Hamburger Aw, thank YOU for watching! :D -Nicole

  • @JuampaXXI
    @JuampaXXI8 жыл бұрын

    I love how they give credit to the team by speaking, instead of just throwing a bunch of names to the screen

  • @jebus6kryst
    @jebus6kryst8 жыл бұрын

    "What do you call it when stars cluster." The Oscers?

  • @landenmoudy5749
    @landenmoudy57498 жыл бұрын

    These types of videos are always fascinating to watch. There is so much to learn about the cosmos in such a tiny life span we have.

  • @Straightarrow213
    @Straightarrow2137 жыл бұрын

    Fun fact everybody the Seven Sisters are Subarus car logo sign👍

  • @GarlicToastOooo
    @GarlicToastOooo8 жыл бұрын

    WOW that was perfect timing. just finished watching the last ep.

  • @nuclearmango5025
    @nuclearmango50255 жыл бұрын

    This is by far my most fav crash course.. thank you for such an amazing journey..

  • @Yojack872
    @Yojack8728 жыл бұрын

    Is the topic, "Quasar" coming anytime soon?

  • @Yojack872

    @Yojack872

    8 жыл бұрын

    And what about Wormholes?

  • @Welverin

    @Welverin

    8 жыл бұрын

    +Jack Star Wormholes don't fit this series, now if there were one on physics...

  • @Yojack872

    @Yojack872

    8 жыл бұрын

    Wormholes don't count as Astronomy? Awww man

  • @Yojack872

    @Yojack872

    8 жыл бұрын

    Arie,.....what?

  • @Yojack872

    @Yojack872

    8 жыл бұрын

    +Arie Elberian Your comment was confusing.

  • @ejdzentigl8779
    @ejdzentigl87798 жыл бұрын

    In my mind, this series is divided into some arcs and there will be more: Arc about basics (whatbis astronomy, gravity, tides, equipment for astronomy, etc...) Solar system arc (Sun, planets, asteroids, comets and meteors, but also those moons, clouds and other stuff) Current star arc (Stars and everything about stars, their shapes, sizes, coloures and even death forms) Now i think there will be something about galaxies then about big bang and then, like you said in episode 1., eventual fate of universe itself. But you know the future of your series, it's great.

  • @robertandersson1128
    @robertandersson11287 жыл бұрын

    Thank you very much for making this video, Phil Plait, Aransda, Thaller, Sweeny and all the others at _Crash Course_ Astronomy! It was really interesting to hear you comparing globular clusters to open, galactic clusters. I actually had no idea what the word ‘globular’ meant before looking it up after this episode. Personally, I do prefer more tightly packed globular clusters over open clusters. Anyway, keep looking at the stars! Thank you for this video!

  • @koellekind
    @koellekind8 жыл бұрын

    Thank you soo much Phil! I love all the astronomy videos!

  • @Jsbs1991f
    @Jsbs1991f8 жыл бұрын

    Was that Hank at 6:11?

  • @connorshea9085

    @connorshea9085

    8 жыл бұрын

    +Jesse Silva yes. dude, no edge

  • @gerardo.barbosa

    @gerardo.barbosa

    8 жыл бұрын

    +Connor Shea NO EDGE!

  • @crashcourse

    @crashcourse

    8 жыл бұрын

    +Jesse Silva Indeed it was: store.dftba.com/products/no-edge-shirt -Nicole

  • @dianamorgan454

    @dianamorgan454

    5 жыл бұрын

    +Connor Shea No Edge!!!!!!!

  • @darrenanimatic9675

    @darrenanimatic9675

    5 жыл бұрын

    @@crashcourse *Anatomy and Physiology intensifies*

  • @johngrey5806
    @johngrey58068 жыл бұрын

    Awesome series, makes learning exciting and fun!

  • @dbalamillo
    @dbalamillo8 жыл бұрын

    love the series! please keep them coming. :)

  • @Zandonus
    @Zandonus8 жыл бұрын

    Beautiful stuff. Can't wait for the really spooky stuff the universe glued together.

  • @time0503
    @time05038 жыл бұрын

    Absolutely LOVE this series and the posts on Slate. One question: if open clusters are so short lived, why aren't they all gone by now. In other words, there must be a mechanism by which they are continually newly formed - yes?

  • @unlacedmalkavian
    @unlacedmalkavian8 жыл бұрын

    I loved the no-edge Hank cameo!

  • @ArturLoss
    @ArturLoss8 жыл бұрын

    This is the best show on youtube. Thank you!

  • @thunderclees24
    @thunderclees248 жыл бұрын

    Been catching up on my A&P pretty much everyday, but late Thursday nights are always reserved for CC Astronomy. Thanks Phil, keep 'em coming!

  • @tomscisci7331

    @tomscisci7331

    6 жыл бұрын

    The same.

  • @johnmarston2616
    @johnmarston26168 жыл бұрын

    I love this series' opening, this series is also entertaining and informative.

  • @Piffsnow
    @Piffsnow8 жыл бұрын

    Damn ! I was totally unaware of all that stuff. Thanks for making me a little less dumb everytime. :)

  • @CamiloSantana
    @CamiloSantana8 жыл бұрын

    i regret that I only have one, "like" to give this video. thank you for your speed and efficacy. such rich content.

  • @greenman1380
    @greenman13808 жыл бұрын

    Your passion for the subject is kind of awesome.

  • @bxundxm
    @bxundxm4 жыл бұрын

    7:10 It's hard to believe something that full of light and energy,that even looks like a city shining in the dark,isn't alive somehow.

  • @gliansimpel5360
    @gliansimpel53604 жыл бұрын

    Thank you so much for this. Reason why I opened this? Job 38: 31; Job 9:9 mentioned Bear, Orion, Pleiades! And I’m into tears realizing how beautiful the creations are & above all how great the CREATOR is!!!

  • @handelviola
    @handelviola8 жыл бұрын

    I love this series!!!! 👍

  • @JosephHF
    @JosephHF7 жыл бұрын

    Perfect, you answered all of my questions in one video.

  • @oatlord
    @oatlord8 жыл бұрын

    These episodes are so fantastic. Such a great show. +1 to you, science-man who kinda reminds me of myth-buster-man.

  • @jackofalltrades123
    @jackofalltrades123 Жыл бұрын

    This guy makes crash course fun and entertaining to watch! Whoever this guy is thank you!

  • @akshaysabnis4053
    @akshaysabnis40537 жыл бұрын

    best series. Keep it going.

  • @SwitosVideo
    @SwitosVideo8 жыл бұрын

    Have been following since episode 1 and been hooked ever since.

  • @eugenio5774
    @eugenio57748 жыл бұрын

    my favorite video so far!!! fascinating!!

  • @mizuka6501
    @mizuka65018 жыл бұрын

    I come back every week to see if there's a new episode out. You guys rock!!

  • @godofthedesecrated7449
    @godofthedesecrated74498 жыл бұрын

    This series couldn't have come at a better time, in my humble opinion that is. Any time would have been great but with all the discovers and new knowledge we've gleaned since Hubble was launched and now with the Kepler finding new objects seemingly everyday I think the timing was superb. Once the James Webb gets into service I believe it will open our minds to things we could never have dreamed of. Thanks for putting this together, it's been awesome so far!

  • @davidjoel111
    @davidjoel1118 жыл бұрын

    I just spent my weekend watching the astronomy series.... I can't believe I have to wait a week for the next episode!!!! :( Thank you for this awesome series.

  • @mastring1966
    @mastring19668 жыл бұрын

    LOVE this series.

  • @MrBoombla
    @MrBoombla8 жыл бұрын

    Awesome! I learned a lot about the estimated age of stars due to their mass. So interesting

  • @theultimategamer6658
    @theultimategamer66588 жыл бұрын

    the no-edge hank running across the screen made my day heh, thank you for this series, space is my special interest and this is my prime information source. (also! i have met phil plait! you gave a lecture at the arkansas governor's school i attended! i started squeaking when i saw you were going to host this show

  • @jootoobert
    @jootoobert8 жыл бұрын

    I just love this series!

  • @subatomic10
    @subatomic104 жыл бұрын

    Thankyou team ! Amazing job 👍

  • @FPInvention
    @FPInvention7 жыл бұрын

    awesome stuff. Subscribed

  • @usmanchughtai1751
    @usmanchughtai17518 жыл бұрын

    This is so cool. I love this!

  • @Didntwanttomakeauser
    @Didntwanttomakeauser8 жыл бұрын

    Keep em coming please

  • @jbtallguy
    @jbtallguy8 жыл бұрын

    favorite show on this channel by far! :)

  • @artcamp7
    @artcamp78 жыл бұрын

    These are fantastic videos. This presenter is a great teacher.

  • @Killuminati23
    @Killuminati237 жыл бұрын

    really great videos, thumbs up

  • @MrMongo321
    @MrMongo3218 жыл бұрын

    Very Interesting! thank you

  • @EthanDyTioco
    @EthanDyTioco8 жыл бұрын

    My favorite crash course series :D

  • @boblatshaw
    @boblatshaw Жыл бұрын

    I really appreciate the explanation of why open clusters are made of mostly massive stars (because the smaller ones have been flung out). Thanks.

  • @stephenkrzynowek4543
    @stephenkrzynowek45438 жыл бұрын

    I love this series

  • @marksimpson3206
    @marksimpson32068 жыл бұрын

    Thanx Mate.... Bind moggling !..... I look at these things as often as I can. PEACE!

  • @DanielC01000100
    @DanielC010001008 жыл бұрын

    Wow really cool!!!

  • @soulreapershorts
    @soulreapershorts6 ай бұрын

    This series is great! I wish they create a new astronomy series today like the biology one they remade

  • @woojongson5431
    @woojongson5431 Жыл бұрын

    I love stars and you guys are my stars too! Thanks a lot!

  • @Observer31
    @Observer318 жыл бұрын

    I have a question: This series is very well done and enjoyable, bravo! But I feel in this video there is something crucial you never explained: if the open clusters tear themselves appart, why hasn't this happened to globular clusters? What is the difference that explains their longevity? It really should have been stated in the video. I just re-watched and I still didn't catch the explanation.

  • @shawnboire5400

    @shawnboire5400

    6 жыл бұрын

    Observer31 Check 7 18 I think gobbler clusters have more stars so it takes time for them to evaporate

  • @Sean_Lightning_OBrien
    @Sean_Lightning_OBrien7 жыл бұрын

    Jebediah, Bill and Bob Kerman! I salute you space explorers!

  • @marsajib
    @marsajib8 жыл бұрын

    mind blown

  • @MataNuiOfficial

    @MataNuiOfficial

    8 жыл бұрын

    Almost every episode xd

  • @BonJoviworstbandever

    @BonJoviworstbandever

    8 жыл бұрын

    +marsajib you should really watch pbs space time then it won't just blow your mind it will obliterate it

  • @alyosha119

    @alyosha119

    8 жыл бұрын

    +marsajib watch pbs space time, your concioussness will be destroyed...

  • @bedwyrwilliams5021
    @bedwyrwilliams50218 жыл бұрын

    loving the shirt!

  • @Chronomatrix
    @Chronomatrix8 жыл бұрын

    extremely interesting, thanks for this

  • @DJCryptoStix
    @DJCryptoStix8 жыл бұрын

    wow i loved this one

  • @izonker
    @izonker8 жыл бұрын

    Great episode, as has been the entire series. One star type I have been waiting to see covered (as what little I Have been able to learn about it so far) are the Wolf-Rayet type Binary pairs, but at least so far have not seen mentioned yet. Will you , (or have you) be covering this particular star or is that something for another series

  • @coxsj
    @coxsj8 жыл бұрын

    I never want this series to end!!!

  • @Prometheukles
    @Prometheukles8 жыл бұрын

    Still the only Crash Course thats up there with JG World History =D

  • @draheim90
    @draheim905 жыл бұрын

    I watched this video after watching many of the others in the playlist and a couple lectures from other channels. As I was watching this one, I kept thinking how cool it would be if Earth were in a cluster (due to the view of the cosmos and how much easier studying it would be) nut that clusters didn’t seem like they’d be suited to having planets and life, or that if life did somehow form that it’d be at a much higher risk of extinction than we are. Then in the last part of the video you basically said the same thing. I guess I’m learning!

  • @Karen-lc8be
    @Karen-lc8be4 жыл бұрын

    Just saw the Pleiades yesterday, so good.

  • @johnsmith-wc8gs
    @johnsmith-wc8gs8 жыл бұрын

    great show. great shirt

  • @Aavarius
    @Aavarius8 жыл бұрын

    All these massive structures that form in the universe are really fascinating to me. Much more than the small stuff.

  • @redouandaghirihaouhaou
    @redouandaghirihaouhaou8 жыл бұрын

    My god, all this knowledge in 10 minutes.. I feel like I've been to school for a month :D

  • @DaryaDK9
    @DaryaDK911 ай бұрын

    Thanks!

  • @kcvriess
    @kcvriess8 жыл бұрын

    Someone else noticed that as of lately (last year or two) scientists hardly mention the big bang by name anymore? There are several new theories about the origins of universe, so they just talk about, "the beginning" or "the formation".

  • @cecioleso
    @cecioleso8 жыл бұрын

    these videos are addictive!!!

  • @siddharthbagmar7408
    @siddharthbagmar74088 жыл бұрын

    i love this

  • @lucindashirreffs6703
    @lucindashirreffs67038 жыл бұрын

    Hey Phil! First of all, I love these videos so much! I've seen every single one of them like twice because I really love space a lot pretty much always have since I was like zero or something. I've always wanted to do something to do with astronomy when I'm older and after seeing your show I really want to be an astrobiologist. I'm in my second to last year of high school right now, and I was just wondering what subjects I'd have to take in future to do that? I'm currently taking evolutionary biology (I wasn't allowed to do physics) and my school doesn't offer space sciences :( Any advice for me? Thanks :)))))

  • @AliHSyed
    @AliHSyed8 жыл бұрын

    LOve the Hank Green cameo in relation to "NOOO EDGE!"

  • @80s-wizard34
    @80s-wizard344 жыл бұрын

    I lov This 🤩🤩🤩😎👍🏽

  • @invisiblejaguar1
    @invisiblejaguar18 жыл бұрын

    An episode on variable stars would be cool, I see them quite a lot.

  • @rjthegood
    @rjthegood8 жыл бұрын

    You're OUR star Dr. Plait.

  • @keironwright6947
    @keironwright69477 жыл бұрын

    I love this guy's groovy shirts! :-)

  • @rushalinagvekar5130
    @rushalinagvekar51306 жыл бұрын

    Keep making this videos

  • @skroot7975
    @skroot79756 жыл бұрын

    Love your shirt

  • @luludrinkerofcoffee4035
    @luludrinkerofcoffee40357 жыл бұрын

    It will never cease to amaze me people think that the universe is only a few thousand years old... I just.. can't..

  • @Iruparazzo
    @Iruparazzo8 жыл бұрын

    may this video series never end

  • @runningnat8284
    @runningnat82847 жыл бұрын

    thank you :)

  • @superpcstation
    @superpcstation8 жыл бұрын

    Makes me sad that there are only 5 more episodes left.

  • @hogdog6525

    @hogdog6525

    8 жыл бұрын

    .... These amazing videos are going to stop soon? :O Why.. Why would they do that to us? This is easily the best crash course subject... What am I going to do with my life?...

  • @OlgaGax

    @OlgaGax

    8 жыл бұрын

    +Hog Dog It's simply the best series on KZread.

  • @crashcourse

    @crashcourse

    8 жыл бұрын

    +Ali Zahid Actually there are 11! Not counting the outtakes episodes, the series will have 46 episodes in total. :) -Nicole

  • @superpcstation

    @superpcstation

    8 жыл бұрын

    +CrashCourse Yayyy!!! Thank you guys for replying :)

  • @monsieurcouchy7564
    @monsieurcouchy75648 жыл бұрын

    I was about to post a question about planets in globular clusters, and then he said that last part. It's like he read my mind.

  • @samarthshah9623
    @samarthshah96238 жыл бұрын

    Phill Plait Thank U for These amazing videos Is it true that in a globular clusters the time runs slowly jst like in a black hole

  • @sofiasehar8554
    @sofiasehar85545 жыл бұрын

    Best astronomy course

  • @charliek9394
    @charliek93948 жыл бұрын

    please explain in detail what happens when stars collide. this is intriguing.

  • @aptapathy
    @aptapathy8 жыл бұрын

    Very cool, thank you, but how can stars revolve around an epicenter without some central mass? Are we assuming that there is a black hole at the center? Also, what happens when many stars collide? Is there an additive affect? Is there a critical mass for stars combining this way? Thank you so much for your time on these videos!

  • @yadiragaibor5907
    @yadiragaibor59078 жыл бұрын

    "read by starlight"🙌❤❤

  • @ArchridLP
    @ArchridLP8 жыл бұрын

    Woo, astronomy! :D

  • @brianamitchell5475
    @brianamitchell54758 жыл бұрын

    I love the vlogbrothers reference! NO EDGE!

  • @socceriscool85
    @socceriscool858 жыл бұрын

    Dam I love astronomy

  • @PRdeSO
    @PRdeSO6 жыл бұрын

    Am I the only one that thinks Phil's shirt is really dope? Damn I'd love to have a beer with that guy.

  • @daniels.6311
    @daniels.63118 жыл бұрын

    you should do an episode on human space flight; its history and hopeful future, but also problems like distance, time, radiation, etc.

  • @patrickhenry7420
    @patrickhenry74208 жыл бұрын

    Video on Quarks? By the way, my day isn't complete without your series.