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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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
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
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
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
7 жыл бұрын
Shirokröte (^^)
@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.
Is anyone else just interested in astronomy and binge watching this?
@Jazzimus
5 жыл бұрын
Ye
@getjdizzled
5 жыл бұрын
yes, this is a great series
@assassingio9847
5 жыл бұрын
Me
@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
5 жыл бұрын
@kamal ks BORING?! USELESS?! THIS IS WHERE I GET MY DAILY DOSE OF ASTRONOMY, HATER!!!
Best series ever.
@Tyronejizz
8 жыл бұрын
I disagree.
@vaibhavgupta20
8 жыл бұрын
+Chemistryisthegame History was also good.
@vaibhavgupta20
8 жыл бұрын
***** didn't watch it. but economics is good.
@badastronomy
8 жыл бұрын
+Chemistryisthegame Thanks!
@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.
Moral of the story? You can't live without heavy metal.
@sudeepjoseph69
4 жыл бұрын
yamma yamma pooku ki. I'm boji with mmoms in
@80s-wizard34
4 жыл бұрын
Lol 😂 🎸🤩🎸🤩
Thank you wonderful people at Crash Course Astronomy for educating/entertaining me. That is all.
@crashcourse
8 жыл бұрын
+Peter Hamburger Aw, thank YOU for watching! :D -Nicole
I love how they give credit to the team by speaking, instead of just throwing a bunch of names to the screen
"What do you call it when stars cluster." The Oscers?
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.
Fun fact everybody the Seven Sisters are Subarus car logo sign👍
WOW that was perfect timing. just finished watching the last ep.
This is by far my most fav crash course.. thank you for such an amazing journey..
Is the topic, "Quasar" coming anytime soon?
@Yojack872
8 жыл бұрын
And what about Wormholes?
@Welverin
8 жыл бұрын
+Jack Star Wormholes don't fit this series, now if there were one on physics...
@Yojack872
8 жыл бұрын
Wormholes don't count as Astronomy? Awww man
@Yojack872
8 жыл бұрын
Arie,.....what?
@Yojack872
8 жыл бұрын
+Arie Elberian Your comment was confusing.
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.
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!
Thank you soo much Phil! I love all the astronomy videos!
Was that Hank at 6:11?
@connorshea9085
8 жыл бұрын
+Jesse Silva yes. dude, no edge
@gerardo.barbosa
8 жыл бұрын
+Connor Shea NO EDGE!
@crashcourse
8 жыл бұрын
+Jesse Silva Indeed it was: store.dftba.com/products/no-edge-shirt -Nicole
@dianamorgan454
5 жыл бұрын
+Connor Shea No Edge!!!!!!!
@darrenanimatic9675
5 жыл бұрын
@@crashcourse *Anatomy and Physiology intensifies*
Awesome series, makes learning exciting and fun!
love the series! please keep them coming. :)
Beautiful stuff. Can't wait for the really spooky stuff the universe glued together.
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?
I loved the no-edge Hank cameo!
This is the best show on youtube. Thank you!
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
6 жыл бұрын
The same.
I love this series' opening, this series is also entertaining and informative.
Damn ! I was totally unaware of all that stuff. Thanks for making me a little less dumb everytime. :)
i regret that I only have one, "like" to give this video. thank you for your speed and efficacy. such rich content.
Your passion for the subject is kind of awesome.
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.
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!!!
I love this series!!!! 👍
Perfect, you answered all of my questions in one video.
These episodes are so fantastic. Such a great show. +1 to you, science-man who kinda reminds me of myth-buster-man.
This guy makes crash course fun and entertaining to watch! Whoever this guy is thank you!
best series. Keep it going.
Have been following since episode 1 and been hooked ever since.
my favorite video so far!!! fascinating!!
I come back every week to see if there's a new episode out. You guys rock!!
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!
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.
LOVE this series.
Awesome! I learned a lot about the estimated age of stars due to their mass. So interesting
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
I just love this series!
Thankyou team ! Amazing job 👍
awesome stuff. Subscribed
This is so cool. I love this!
Keep em coming please
favorite show on this channel by far! :)
These are fantastic videos. This presenter is a great teacher.
really great videos, thumbs up
Very Interesting! thank you
My favorite crash course series :D
I really appreciate the explanation of why open clusters are made of mostly massive stars (because the smaller ones have been flung out). Thanks.
I love this series
Thanx Mate.... Bind moggling !..... I look at these things as often as I can. PEACE!
Wow really cool!!!
This series is great! I wish they create a new astronomy series today like the biology one they remade
I love stars and you guys are my stars too! Thanks a lot!
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
6 жыл бұрын
Observer31 Check 7 18 I think gobbler clusters have more stars so it takes time for them to evaporate
Jebediah, Bill and Bob Kerman! I salute you space explorers!
mind blown
@MataNuiOfficial
8 жыл бұрын
Almost every episode xd
@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
8 жыл бұрын
+marsajib watch pbs space time, your concioussness will be destroyed...
loving the shirt!
extremely interesting, thanks for this
wow i loved this one
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
I never want this series to end!!!
Still the only Crash Course thats up there with JG World History =D
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!
Just saw the Pleiades yesterday, so good.
great show. great shirt
All these massive structures that form in the universe are really fascinating to me. Much more than the small stuff.
My god, all this knowledge in 10 minutes.. I feel like I've been to school for a month :D
Thanks!
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".
these videos are addictive!!!
i love this
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 :)))))
LOve the Hank Green cameo in relation to "NOOO EDGE!"
I lov This 🤩🤩🤩😎👍🏽
An episode on variable stars would be cool, I see them quite a lot.
You're OUR star Dr. Plait.
I love this guy's groovy shirts! :-)
Keep making this videos
Love your shirt
It will never cease to amaze me people think that the universe is only a few thousand years old... I just.. can't..
may this video series never end
thank you :)
Makes me sad that there are only 5 more episodes left.
@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
8 жыл бұрын
+Hog Dog It's simply the best series on KZread.
@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
8 жыл бұрын
+CrashCourse Yayyy!!! Thank you guys for replying :)
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.
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
Best astronomy course
please explain in detail what happens when stars collide. this is intriguing.
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!
"read by starlight"🙌❤❤
Woo, astronomy! :D
I love the vlogbrothers reference! NO EDGE!
Dam I love astronomy
Am I the only one that thinks Phil's shirt is really dope? Damn I'd love to have a beer with that guy.
you should do an episode on human space flight; its history and hopeful future, but also problems like distance, time, radiation, etc.
Video on Quarks? By the way, my day isn't complete without your series.