Galaxies, part 1: Crash Course Astronomy #38
ฝัง
- เผยแพร่เมื่อ 15 มิ.ย. 2024
- The Milky Way is our neighborhood in the universe. It’s a galaxy and there are many others out there. Galaxies contain gas, dust, and billions of stars or more. They come in four main shapes: elliptical, spiral, peculiar, and irregular. Galaxies can collide, and grow in size by eating each other.
Check out the Crash Course Astronomy poster here: store.dftba.com/products/crash...
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Chapters:
Introduction: Galaxies 00:00
Spiral Galaxies 3:00
Elliptical Galaxies 5:22
Galactic Collisions 6:18
Peculiar Galaxies 8:46
Irregular Galaxies 9:29
Review 11:08
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PBS Digital Studios: / pbsdigitalstudios
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PHOTOS/VIDEOS
NGC 5363 aftar.uaa.alaska.edu/gallery/d... [credit: T.A. Rector (University of Alaska Anchorage) and H. Schweiker (WIYN and NOAO/AURA/NSF)]
Panorama of Spiral Galaxy, M31 www.noao.edu/image_gallery/htm... [credit: Local Group Survey Team and T.A. Rector (University of Alaska Anchorage)]
Animation of a variable star www.spacetelescope.org/videos/... [credit: NASA, ESA, M. Kornmesser]
Hubble M31 PHAT Mosaic hubblesite.org/newscenter/arch... [credit: NASA, ESA, J. Dalcanton, B.F. Williams, and L.C. Johnson (University of Washington), the PHAT team, and R. Gendler]
Elliptical - Death of giant galaxies spreads from the core www.spacetelescope.org/news/h... [credit: ESA/Hubble & NASA]
Spiral - HUBBLE VIEW OF BARRED SPIRAL GALAXY MESSIER 83 sci.esa.int/hubble/53590-hubbl... [credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA). Credit: William Blair (Johns Hopkins University)]
Peculiar - Colliding galaxies make love, not war www.spacetelescope.org/news/h... [credit: NASA, ESA, and the Hubble Heritage Team STScI/AURA)-ESA/Hubble Collaboration]
Irregular - Little Galaxy Explored www.nasa.gov/mission_pages/spi... [credit: NASA/JPL-Caltech/STScI]
Hubble Image of Messier 101 hubblesite.org/newscenter/arch... [credit: NASA, ESA, K. Kuntz (JHU), F. Bresolin (University of Hawaii), J. Trauger (Jet Propulsion Lab), J. Mould (NOAO), Y.-H. Chu (University of Illinois, Urbana), and STScI]
A poster-size image of the beautiful barred spiral galaxy NGC 1300 www.spacetelescope.org/images/... [credit: NASA, ESA, and The Hubble Heritage Team STScI/AURA)]
NGC 3344 skycenter.arizona.edu/gallery/... [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
Flocculent spiral NGC 2841 www.spacetelescope.org/news/he... [credit: NASA, ESA and the Hubble Heritage Team]
Barred Spiral Galaxy NGC1365 www.noao.edu/image_gallery/ht... [credit: SSRO/PROMPT and NOAO/AURA/NSF]
Magnificent Details in a Dusty Spiral Galaxy hubblesite.org/newscenter/arch... [credit: The Hubble Heritage Team]
Panning across Messier 77 www.spacetelescope.org/videos/... [credit: NASA, ESA, Digitized Sky Survey 2. Acknowledgement: A. van der Hoeven]
Hubble Mosaic of the Sombrero Galaxy www.spacetelescope.org/images/... [credit: NASA/ESA and The Hubble Heritage Team]
Spiral Galaxy NGC 4565 www.eso.org/public/images/eso0... [credit: ESO]
M87 (with Jet) skycenter.arizona.edu/gallery/... [credit: Adam Block/Mount Lemmon SkyCenter/University of Arizona]
M59, NGC4621 www.noao.edu/image_gallery/ht... [credit: NOAO/AURA/NSF]
Fulldome simulation of colliding galaxies www.spacetelescope.org/videos/... [credit: NASA/STScI]
Antennae Galaxies www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA]
Terzan 5 Artist’s Concept www.sdss3.org/press/images/201... [credit: Amanda Smith, Institute of Astronomy, University of Cambridge]
Interacting Galaxy Pair Arp 87 hubblesite.org/newscenter/arch... [credit: NASA, ESA, and the Hubble Heritage Team]
Doing cartwheels to celebrate the end of an era www.spacetelescope.org/images/... [credit: ESA/Hubble & NASA]
Hoag's Object hubblesite.org/newscenter/arch... [credit: NASA and The Hubble Heritage Team]
Paranal Nights www.eso.org/public/images/pot... [credit: Y. Beletsky (LCO)/ESO]
Tarantula Nebula www.eso.org/public/images/eso1... [credit: TRAPPIST/E. Jehin/ESO]
Hubble Ultra Deep Field 2014 hubblesite.org/newscenter/arch... [credit: NASA, ESA]
My mind cannot comprehend this size
+InDeepPudding Wait till he goes over cluster galaxies and how to determine which galaxies are in which cluster...and where we sit in that whole ting.
the universe is just faaaaar to big to comprehend
the universe is probably infinite.
+nilfisk think we would of moved on to some other planet/galaxy before it would hit the milky way
+Ryan Sprenkels we have a pretty good idea of how old the universe is, given the half lives of certain elements. The question is, is this a cycle that renews itself, or is it once and done--to be destined for the heat death of the universe.
The other question is are there other universes, much like the question previously raised about other worlds, galaxies,etc.
I like how Phil says A LOT!
haha, I was thinking the same thing 😁
+Srdjan Smudja phil saying A LOT reminded me of hank saying NO EDGE!
+Srdjan Smudja He says it A LOT
+Srdjan Smudja A LAAT
+Srdjan Smudja
hahahaha. in the course of 35 years of mainstream astronomy education BILLIONS AND BILLIONS has just been replaced by A LOT :D
Dang, now I feel small and can't stop thinking about what consciousness is on this tiny rock within one of its billions of organisms. Oh well, back to homework.
We are mere ants.
+Bob Hope that is a bit optimistic
+Bob Hope Less than ants my friend.
HB SKATE When did ants send vehicles to other worlds?
Bob Hope We are more bacteria... No on the cosmic scale we are actually closer in size to the universe itself than a planck. Yet we are still very small and insignificant creatures.
Your last quote, I want to frame that and put it on my wall: "Astronomy is really really good at putting us in our place. But it's also really good at showing us just how grand and awe inspiring that place is" Seriously excellent statement! That sums up why I love astronomy. It can make you feel so small, but at the same time so incredibly lucky and blessed to just be a part of such a breath taking universe. Thanks for the great episode! Looking forward to next week's!
Regarding to galaxies collision, our own galaxy is on it's "crashcourse ;)" with Andromeda galaxy
+Fighting_Hussar Well played pun, my friend. Well played.
-Nicole
+CrashCourse who the fuck is Nicole?
+Laura Ponicki Nicole Sweeney See Credits @11:31
+Laura Ponicki Nicole Sweeney - editor of this show.
CrashCourse Thank you :)
when this series end i want crash course paleontology. a science not really talked about and would make for a fascinating series
+Dominick Luneau More likes for this guy!
+Dominick Luneau Awesome idea. I would want to see that too.
+Dominick Luneau I agree, though ultimately it would turn out to be Crash Course: Phylogeny
+Dominick Luneau that would be awesome!
I agree
Surprised you guys didn't mention that our Milky Way is on a collision course with Andromeda.
Me too! I wish I could see the collision but sadly, I'll be dead (probably)
+Jayken Serin-Tal Who cares aboout 4 billion years in the future, people barely care about the next 2 years.
They used a simulation of the Milky Way-Andromeda collision to demonstrate galaxy collisions.
I bet that'll be in the next ep
+Jayken Serin-Tal Patience.
Astronomy: the most fun you'll ever have starting at dirt.
You sir deserve a prize
+John Doe don't forget about dust
how do you look at dirt. its space
+GreenShot space dirt, clearly
wouldn't geology or archeology be a better fit for that statement?
I think this is the best crash course, every episode is awesome!
Well we are basically learning about the great void that is space...a void that is impossible to cross, yet someday we must.
Oh and that avatar though...
+Colton Wilson well...it's not impossible to cross....just really hard, and long distances are still out of our reach^^
and, what about my avatar? I can't tell if you were dismissive or admiratif....
+dahulius oh, sorry came off that way...I really, really like Soul Eater...
awesome and depressing at the same time
This is one of the many reasons why I love Astronomy: It helps put things in perspective.
I should be writing an essay right now, instead I'm watching this. No regrets!
Me too. No ragrets.
***** Oh I know haha. It's going to be an all-nighter I'm afraid.
ayyyyy i feel you man
+MisterDutch93 If the essay is about astronomy or galaxies, you can pass it off as "research".
angeldude101 Sadly, it's not. I don't think 17th century art-guilds have anything to do with astronomy haha
The A LOT thing should really be a meme.
such dank, very may mays, wow
+chaichana I agree. I think the 'space is weird' part should be also.
+chaichana This joke is too meta for me.
+chaichana how many ones are in one hundred? A LOT
+chaichana *ALOT
This was one of the most exciting videos on youtube ever. You are a truly good orator.
Thank you for this episode.
YOU BROKE MY BRAIN! The numbers, the distances... They cant be imagined by human mind O_O
I love how these build on each other. Every episode seems to have more references to prior episodes than the last
I could totally relate to irregular galaxies, because I, too, am small and chaotically shaped.
I think the prettiest picture from space would be the sombrero galaxy.
Absolutely love this channel for astronomy, presentation is excellent and you don't have the fluff that TV programs have (the sensational dooms day rhetoric or the boring over used "are we really alone in the universe" narration).
slightlytwistedagain not exactly both are good
I saw this guy on a different video that talked about galaxies and black holes and I was like "Hey that's the crash course guy." His presence made the video even more liget.
I am SO happy when I see crashcourse Astronomy video in my news feed!!
Thanks, and I always appreciate when vids point out that science has been/can be wrong about formations, and other things, be it stars, galaxies, space, time, etc.
I have always felt small when talking about things on the galactic scale, but for some reason, this episode in particular has put me in awe.
It makes me just a bit sad that it is so unlikely we will be able to travel to another galaxy within my life time, if ever.
Adam Craig why not?
I guess you’ll be even sadder to hear that we won’t be even leaving our solar system in your lifetime either
our satelite has
nicougrikify Pelletier only barely, in the grand scheme of things
Neil Moore
Yeah... Pretty sure it's still in the Oort Cloud
100 billion galaxies and people think there's no other life in the universe smh
public schools across the nation should pay pbs to create crash courses, would be a great teaching tool for teachers
I know I already commented but I have to get this out. This is my favorite subject. I watched the segment with the galaxy collision simulation over and over again. It makes my mind buzz with ideas and questions. Just freaking amazing!
The people writing the script are underrated honestly, the description of the heavenly bodies is poetry
Science is the best! Thanks Crash Course!
agreed
+Forrest Rittmann and you didnt type FIRST! :)
I did think it though!
True that!
I unsuscribed from Crash Course awhile ago because I disliked the bias in the history, but I've resubscribed just for the astronomy. Seriously loving this series.
"It's a happenin' place!"
You are the second best person i know at saying the word "Billions"
Who's the first?
+gingergamergirl98 Carl Sagan!
Desmolas Omg YES
Best crash course thus far. Mind blown every episode.
our universe got *A lot* bigger
in the beginning of the episode he called our galaxy a neighborhood, the neighborhood got *A lot* bigger
Loving this series A LOT
Finally, my weekly astro-fix! ~twitches~
"We're out in the suburbs." Love it! Great show!
Yeah, boy. I get pumped for Galaxies. How much our understanding expanded once we discovered they were out there. Mind blowing.
Really enjoying CrashCourse Astronomy a lot... A LOT!!!!
Man, I love your Astronomy show, and the whole CrashCourse thing. It is so fun to just sit down, hit one of the videos, and listen to people, who can tell these in a fun way, instead of the boring way teachers do. Learnin' a lot from you guys, keep up the good work!
This is by far the best show on Crash Course and I wish it would keep on going endlessly!
A nice and highly informative video, thank you very much!!!
And to think it took about 15 billion years for the universe to become essentially sentient and self-aware of itself in the form of us humans... just WOW!!!!
No mythic religious fictional story can ever come close to the mind-blowing magnificence and grandness of the real observable universe!!!
Hi Phil and the team! Huge fan of this series :)So I had this doubt- what exactly is the difference between a globular cluster and an elliptical galaxy? Is it possible that some of the elliptical galaxies we've observed so far may happen to be globular clusters?
i feel so insignificant, yet truly amazing that we even exist,
my brain is struggling to comprehend the size that our universe is, my city is big!, my country is huge, the earth is gigantic, the sun is titanic, out galaxy is colossal, and even our galaxy is puny compared too the rest of the universe, like a single grain of sand compared to our entire planet, thanks for reminding me how pathetic and meaningless my day too day worries are, great video!
So true. And going in the other direction, we have cells, molecules, atoms, nuclei and subatomic particles. The size of an atomic nucleus is of the order of 10^-15 meters! And ultimately that's what makes up all the matter that we know. Fascinating isn't it?
You and Dr. Thaller were some of my favorites on The Universe, one of my favorite series. Glad to see you again.
crash course is always amazingly interesting!
All your videos are great Phil. Between the content, production and your obvious enthusiasm for the subject the results are awesomely entertaining and educational. Thank you everyone involved. Cheers
Phil Plait does such a great job at presenting very complex ideas in such a way that people just learning about the Universe can understand and really appreciate the the information. I have said what a great job that your team does putting these videos together put I have to say that the graphics and pictures that go along with the videos are truly awesome! Great job!
Greetings from Atlantic City New Jersey U S A!
Been taking astronomy this semester and this series has been a great review tool for me. Thanks!
Some decent research and hard evidence are presented.. this deserve more views
Yay! Thanks Phil and team for another great installation.
I'm currently in an astronomy 101 course and I must say, this series is superb nearly everything I've learned in the course has been talked about in this series.
Wow! Great episode!
1:41 You've got it a bit mixed up. Both of the arguments you present - by Shapley and Curtis - are arguments that the Milly Way is the entire universe. It was actually Shapley who argued that other galaxies must be impossibly far away - not Curtis. Great video, though.
Wow, I love this show. Keep 'em coming.
This is such a beautiful and powerful episode.
I love this series! Keep up the good work!
Just missing such series ..one of the best I've ever watched three years ago
Well done. I like that you speak quickly. Lots of info packed into a short time. Thank you.
I love this series oml
Thanks for doing this video.
God damn the quality of this show has gotten so good over time, great show thank you.
i love these crash courses... simplified enough to help explain to my kids too.. thanks
love these more each episode
I hope this series never ends!
7:33 Yet beautiful.
Awesome episode, as always. 👍👍👍
Those Kerbals look happy to learn, except the one at the far right. I think his mind was blown from the previous lecture.
2020 and this guy is still awesome
Love this series because of its pictures and images:)
Well done
Very nice galaxies
Brilliant video, excellently explained.
i loved this episode!
You rock Phil!
So cool
What we will find out next, that the universe is actually just a small part of a multiverse
+Danny Meléndez multiverse is no observation or even hypothesis, its just a philosophy, it has no scientific basis. That should be enough to keep it out...
I don't think that would even be possible to prove. Unless we get some SUPER advanced tech from aliens or something.
gingergamergirl98
Physicist think they can proof it with Quantum Physics! And some images with different telescopes using various spectra seem to suggest 'soft' touches from other universe according to some.
sion8 Quantum Physics is still in its infancy and scientists are plunged into deep mysteries about its mere nature(just go and read about it on wikipedia) and you here you are talking mumbo jumbo...
Saad Mohd
Well, so what one of the current big theory in quantum physics actually requires there to be a multiverse in order to explain all those quantum phenomena! Is not "mumbo jumbo" is just how they're currently working towards.
Thank you very much for this video, Phil Plait and the others at _CrashCourse_ Astronomy! Galaxies are really big, immense, gigantic, and when they collide...wow! Amazing! Fascinating! I can’t help but wonder what life on planet Earth would be like if we were in another kind of galaxy, say an irregular galaxy. Today I learned that there are more types of galaxies than I thought and that some are so radically different when ours. I had no idea where was a difference between irregular galaxies and eliptical galaxies and I certainly did not know about active galaxies or perculiar galaxies. I also learned that galaxies are cannibals! Can life exist in other galaxies?! Anyway, thank you A LOT for this video!
French toast is sooooo good! But not as good as watching phill try to explain how insane the universe is in the morning :)
EXCELLENT!
fascinating
Phenomenal video content and graphics. And what a wonderful host. Thank you so very much for this brilliant, and fun, education.
Best crash course ever!
great video thx
Awesome video!
Great stuff ... keep up the videos ...
Brilliant
Thanks for giving proper credit to galaxy collisions, which are mind-boggling! Imagine the prospect of a galaxy collision where the supermassive black hole in one galaxy’s center sweeps through the arms of the other galaxy. Kind of horrifying.
MIND = BLOWN !
You are inspiring!
I'm glad whoever did the captions typed "A LOT" instead of "ALOT"
you should do a series on the Standard Model, and particle physics. THAT would be fun.
As a student in UC Berkeley Astron C10 course, i say crashcourse does a marvelous job. we were just studying galaxy this week
My brain cells got so shooketh from this episode that they left my brain in scrambles now...
Send help!
yeah! greatest day of the week!
I love these vids!
Thanks
just when i thought my day couldn't get any better!
Awesome
thanks so much, finally I understood this.
The next episode is gonna be epic