Oleksii Kolesnikov I think they still need another $7k or so a month to consider that according to them. Lunos XV I don't know but there can't be too many basic space topics left to talk about. Then again, maybe Phil will surprise us. :D
Alexander Korotkov I'm guessing that if it's close enough to be gravitationally bound, it probably gets blown away by the blast, stars are not very dense on thair outer layers.
+TheBadAstronomer I have easily learned more through Crash Course then i have in my entire secondary school emotional grind fest... I just wasn't into school i guess :p wadayakno... people are interested in learning there own way, wait what! pressure and stress leads to disinterest? :O comfort is the key? What is this nonsense! you get my point ;p
+13ullseye I'm sure Phil made every episode in this series planning to build a giant interconnected web of advertisements for both previous and future episodes.
Nah. It got divorced and got all the kids. It's especially fond of Saturn and Earth . Saturn is very artistic while Earth is extremely creative and mature
I highly recommend the Isaac Asimov story "Nightfall" if you want to take a deeper dive into that concept. One of the most haunting sci-fi stories I've ever read. The expanded novel is also worth it if you enjoy the story.
@@w.kelleyobrien459 YEEEESSS that's exactly what I thought of! I at first thought that couldn't be a thing, then I found out that Castor (of Castor and Pollux) IS a sextuple star. I don't know how likely a stable/habitable orbit around such a set would be, but...
From CCA 31: Outgoing neutrinos slams into the star's outer layers and blows everything outwards, and the star explodes. From CCA 34: Extra gas from a companion star gets dumped onto a white dwarf resulting in carbon fusion, and the star explodes. I'm starting to see a theme here...
"Used as eyesight test in ancient times" Imagine one of then has better eyesight than the other and both be like "THERE IS A SECOND ONE CANT YOU SEE IT?" -"nah you're just crazy"
I just went on a CrashCourse Astronomy binge watch!! Thank you so much for your videos, after the lunar eclipse this past weekend, I was excited to learn more about the sun, the stars, and our universe :) thanks for your hard work on these videos!!
Probably one of my favorite episodes yet. I've known about multiple star systems, but learning about contact binaries and the stellar novae at the end was really cool!
+Justifyed Mattitude A standard candle is the type of super nova mention in this episode, is used to measure distances in the universe... A quasar on the other hand, is total different beast, it involve a super massive black hole, and while a super nova can outshine a galaxy for a few moments, a quasar can do the same for years even millions of year, they are the most powerful thing in the universe... they are just mind blowing...
Ms. Simon's Earth Science Class (8th-9th grade) This is one of my favorite episodes. It made me think about planets in binary systems. A sky on a planet in a multi-star solar system would be amazing. There would be periods in the year where the other stars were closer and farther away or parts were there was no night because both sides of the globe would be cast in light. If the planets had moons they might have a constant shadow moving on the planet until it got out of that zone; maybe even a couple weeks of solar eclipses over and over again. So many questions! Would some days be longer from the tidal effects of the other stars? How would comets and asteroids react in that system? How drastically would temperatures change on the planet as its star orbited around the others, if they would change that much at all? I love astronomy because there are still so many questions to be asked, and with every question answered ten more take its place. Rochelle Mann 9th grade
One of the best things about our infinite universe is that there are countless objects for you to make CrashCourse Astronomy videos about. Well done yet again!
Some day my brother came to me during dinner and he said: Fill plate. Then, as I was talking I found out that we were talking about two different things.
6:30 'When the fainter star goes behind the brighter star, the light hardly drops at all' The graphic is showing the opposite, or am I missing something here?
I find it amazing, this video isn’t that old, from 2015. Phil talks about how we may never find any of the sun’s siblings....yet here we are only 3 years later and we’ve found not only a sibling, but a twin.
Maybe it's the bigger subjects and going deeper into space, but it feels like each new episode is better than the last! And the first was already awesome, so by now it's off the charts! :D I love it!
Thank you really much for making this episode, Phil Plait, Aranda, Sweeny, Thaller and all the others at _Crash Course_ Astronomy! Yes, indeed, binary stars are important are really interesting...fascinating! I was actually quite surprised to learn that a such large portion of the stars in the Universe form a multiple-star system: one third! Cool. So, if matter is transported from one star to the other slow enough, theoretically, the stars in a recurrent binary system could live forever? Nice! Eternal life due to the strange properties of the Universe.
Based on what I saw the smaller star was suppose to be the one emitting more light while the larger one is emitting less. Size does not necessarily correlate to luminocity.
+GeneralPotatoSalad That's exactly what I said. Size does NOT correlate with luminocity so that is why there is a bigger dip when the smaller star is in the back meaning that the smaller one is indeed the brighter one
i just thought those last systems are like brothers arguing for something "give me that" "no it's mine" "but i need it more" "no you don't" and then it just breaks.
@ 6:27 Phil says "when the fainter star goes behind the brighter star, the light hardly drops at all" ... but the graphic in the video shows the bigger drop in brightness!???!!! So either Phil is wrong or the graphics (credit: ESO/L.Calcada) are wrong ... I'm guessing the graphics ...
+Jonathan White Very short answer? If the star that goes nova destroys itself, the companion star is ejected from the system for lack of a gravitational partner. It's mostly energy that hits the companion, so other than some atmosphere blowing off, the star itself remains intact. physics.stackexchange.com/questions/25357/what-happens-to-the-neighboring-star-of-a-type-ia-supernova
Could you do one episode on the most weird star systems? I'd love to see you go up from binairies to quintuples and all the weird interactions (mass transfer, orbits) they must have.
I am wondering. Many videos have mentioned the speed of light and why none can go faster than light, but... None of the videos really explained how did we discovered such fact, how did we found out the speed of light. So, my question: how did scientists discover the speed of light, and how did they conclude that nothing could go faster than that? It's really bugging me. Thanks.
Noticed a mistake at 6:35 The fainter star does not actually cause a bigger dip, but a smaller dip compared to when the brighter star covers the fainter one
I was skeptical of Crash Course without the Green bros, but Phil Plait's got me hooked. Also, I request occasional "space news" updates from you guys (New Horizons findings, Mars and liquid water...). That is all.
+Nick Tomasello If you're looking for space-centric news from this group of people, then Scishow Space might be what you're looking for. I don't recall Phil being on there and Hank is only one of 3 people that present on it, but it does fit the bill.
I think you will find that many of the larger black holes are black, but not singularities. Look at the complex orbits of the stars around our own central black hole. They are complex, intricate, interweaving, but not chaotic and explosive. There are lots of black holes, white dwarfs and other things that can orbit a central location. And inside might well be many distinct and whole stars. If you check the whole of the big bang region contains enough mass to be black from the outside. Systems with many stars can be of many kinds, and some of them can trap light, but not gravity. And we can scan using gravity now. Richard Collins, The Internet Foundation
so here´s a question I´ve been thinking about for some time: the definition of a planet (as I learned it) has three aspects: - it orbits a star - it is big enough to have a more or less sperical shape - it freed its orbit from any other bigger objects by its gravity. If now a small star orbits a big one (like in the example with sirius) it fulfills all the criteria for a planet. Is it a planet or a star? or both? or what is wrong with the definition of planets?
There's actually a theory/hypothesis that our star is in a binary orbit with the star Sirius. Interesting stuff, and theorizes/hypothesizes that the binary cycle lasts 24,000 years. Pretty cool :')
I'm going to miss this series when it's inevitably over. It's by far my favorite Crash Course.
+PogieJoe I don't even want to think about that!
+PogieJoe Then Crash Cousre Physics will start!
+PogieJoe when do you think it will be over?
Oleksii Kolesnikov I think they still need another $7k or so a month to consider that according to them.
Lunos XV I don't know but there can't be too many basic space topics left to talk about. Then again, maybe Phil will surprise us. :D
PogieJoe
if they run out they could just do revamps of old episodes.
Every school should show this series to the students, and every science teacher should wear cool shirts like those Phil uses.
+ComandanteJ Thanks! :)
+ComandanteJ I agree. That shirt was glorious.
+TheBadAstronomer what would happen to the star that doesn't blow up? does the explosion make it fly away?
Alexander Korotkov I'm guessing that if it's close enough to be gravitationally bound, it probably gets blown away by the blast, stars are not very dense on thair outer layers.
+TheBadAstronomer I have easily learned more through Crash Course then i have in my entire secondary school emotional grind fest... I just wasn't into school i guess :p wadayakno... people are interested in learning there own way, wait what! pressure and stress leads to disinterest? :O comfort is the key? What is this nonsense! you get my point ;p
_"This makes them very important indeed, as you'll see in a future episode"_
Oh Phil - you tease, you.
+13ullseye My thought exactly... he enjoys this too much.
+13ullseye an episode about a star eating mass and exploding into a bright object visible across the observable universe? Has to be a quasar episode.
+13ullseye I'm sure Phil made every episode in this series planning to build a giant interconnected web of advertisements for both previous and future episodes.
+13ullseye Standard Candle :)
+HexerPsy yup
Our sun is social distancing because of its corona.
Our sun: “I like being a bachelor.”
It doesn't trust others to take care of our planet.
Nah. It got divorced and got all the kids. It's especially fond of Saturn and Earth . Saturn is very artistic while Earth is extremely creative and mature
Kudos to the photographer who took time and went in space to take these amazing pictures
I wish these videos would get MILLIONS of views.
opsimathics
Why?
Don’t you mean Billlions and Billions
it has 1 million
Imagine living on a planet in the habitable zone in a sextuple star system
I highly recommend the Isaac Asimov story "Nightfall" if you want to take a deeper dive into that concept. One of the most haunting sci-fi stories I've ever read. The expanded novel is also worth it if you enjoy the story.
@@w.kelleyobrien459 YEEEESSS that's exactly what I thought of! I at first thought that couldn't be a thing, then I found out that Castor (of Castor and Pollux) IS a sextuple star. I don't know how likely a stable/habitable orbit around such a set would be, but...
@@w.kelleyobrien459 ah damn it I was gonna say the same thing. U beat me by 11 months
You probably wouldn't be able to sleep.
Yep it would be cool
our Sun is in long distance relationship :P
From CCA 31: Outgoing neutrinos slams into the star's outer layers and blows everything outwards, and the star explodes.
From CCA 34: Extra gas from a companion star gets dumped onto a white dwarf resulting in carbon fusion, and the star explodes.
I'm starting to see a theme here...
Well, they are incomprehensibly huge nuclear reactors with no safety mechanisms.
+DynamicWorlds but it shouldn't matter about safety because the effect it reaches and the space it sits on is 'preety safe'.
+Ganaram Inukshuk _______________, and the star explodes.
Stars and RBMK reactors appear to have much in common.
"Used as eyesight test in ancient times"
Imagine one of then has better eyesight than the other and both be like "THERE IS A SECOND ONE CANT YOU SEE IT?"
-"nah you're just crazy"
I just went on a CrashCourse Astronomy binge watch!! Thank you so much for your videos, after the lunar eclipse this past weekend, I was excited to learn more about the sun, the stars, and our universe :) thanks for your hard work on these videos!!
7:15 "This can make things really weird for them."
I smell a sitcom...
I love Phil's obvious passion for the subject matter...reminds my of a speeded-up Carl Sagan
Probably one of my favorite episodes yet. I've known about multiple star systems, but learning about contact binaries and the stellar novae at the end was really cool!
Excuse me while I clean my brains off the wall. My head went supernova
Hooray for standard candles!
+Matthew Prorok That's what he was talking about at the end right? Type 1a supernova.
+Justifyed Mattitude No. Quasars last far longer and are related to black holes.
+Justifyed Mattitude A standard candle is the type of super nova mention in this episode, is used to measure distances in the universe... A quasar on the other hand, is total different beast, it involve a super massive black hole, and while a super nova can outshine a galaxy for a few moments, a quasar can do the same for years even millions of year, they are the most powerful thing in the universe... they are just mind blowing...
+Matthew Prorok Yeah, my candle uses carbon and hydrogen, too. I hope it's not thermonuclear though. I really do.
Penny Lane
There's an easy way to tell; stand in the same room with it. If you're not reduced to a smear of plasma then it's not thermonuclear.
Ms. Simon's Earth Science Class (8th-9th grade)
This is one of my favorite episodes. It made me think about planets in binary systems. A sky on a planet in a multi-star solar system would be amazing. There would be periods in the year where the other stars were closer and farther away or parts were there was no night because both sides of the globe would be cast in light. If the planets had moons they might have a constant shadow moving on the planet until it got out of that zone; maybe even a couple weeks of solar eclipses over and over again.
So many questions! Would some days be longer from the tidal effects of the other stars? How would comets and asteroids react in that system? How drastically would temperatures change on the planet as its star orbited around the others, if they would change that much at all?
I love astronomy because there are still so many questions to be asked, and with every question answered ten more take its place.
Rochelle Mann 9th grade
This series keeps getting better and better. So interesting!
One of the best things about our infinite universe is that there are countless objects for you to make CrashCourse Astronomy videos about. Well done yet again!
Thursday is my favorite day of the week.
Also, hurray for next week episode on star clusters!
This is by far the best educational series for amateur astronomers.... Thanks
Some day my brother came to me during dinner and he said: Fill plate. Then, as I was talking I found out that we were talking about two different things.
I have to say, astronomy is by far my most favorite crash course. especially the last 5-7 episodes were super interesting!
6:30 'When the fainter star goes behind the brighter star, the light hardly drops at all' The graphic is showing the opposite, or am I missing something here?
Phil Plait you are surely one of my idols of all time!
ooooh boy, oh boy, oh boy!
I've been waiting to hear about Binary Stars ever since this series started!!!
+TheBadAstronomer another awesome show, keep them coming! You're definitely a true star of this channel.
So interesting! :D
+Haise Leonhardt Agreed.
Phil, you absolutely crushed this episode. Keep up the great work!
I find it amazing, this video isn’t that old, from 2015. Phil talks about how we may never find any of the sun’s siblings....yet here we are only 3 years later and we’ve found not only a sibling, but a twin.
Have to say I appreciate the awesome content of this video, made even better with all the Kerbals in the background.
Surprised there was no star wars joke, what with the iconic binary sunset
These videos have been absolutely amazing. Thank you so much to everyone involved
Maybe it's the bigger subjects and going deeper into space, but it feels like each new episode is better than the last! And the first was already awesome, so by now it's off the charts! :D I love it!
Please do another crash course astronomy. I know you already finished filming this one, I don't want the episodes to end..
Thank you really much for making this episode, Phil Plait, Aranda, Sweeny, Thaller and all the others at _Crash Course_ Astronomy! Yes, indeed, binary stars are important are really interesting...fascinating! I was actually quite surprised to learn that a such large portion of the stars in the Universe form a multiple-star system: one third! Cool.
So, if matter is transported from one star to the other slow enough, theoretically, the stars in a recurrent binary system could live forever? Nice! Eternal life due to the strange properties of the Universe.
0:05 the look in his face if you pause is astronomical compared to the seriousness of his face
"all of it"... that may be my favorite quote from him.
Other crash course channels are a bit boring but I LOVE CRASH CORSE ASTRONOMY!!!!!!!
Phil Plait is awesome
+Pavlock Productions So true.
It seems like every episode, he hints towards more in a future episode.
I hope this series never ends...
I really really enjoy how this information is presented. Thank you
Great series. My thanks to the whole crew
Learning so much from this series.. Loved this series.. Super interesting..
I love this series, I was litterally smiling through out the entire episode :) Thanks Phil! You make my day, on every release day :p
Without this I would never be able to pass astronomy thank you !
The animation of the eclipsing binary stars gets the dips in luminosity wrong according to what Dr Plait says while it is shown.
Based on what I saw the smaller star was suppose to be the one emitting more light while the larger one is emitting less. Size does not necessarily correlate to luminocity.
+Nillie No it isn't. The smaller star is the brighter star.
Dont tell them. Or they'll reupload the same episode next week with the fix :p
+GeneralPotatoSalad That's exactly what I said. Size does NOT correlate with luminocity so that is why there is a bigger dip when the smaller star is in the back meaning that the smaller one is indeed the brighter one
+Nillie Note that the smaller star is also the brighter one.
Amazing information! Super interesting! And you are such a great and enthusiastic narrator!
When you said that some stars travel with "multiple companions", my first thought was "those damn floozies!"
I'm not sure what this says about me...
What an explosive episode :P I very much enjoyed this one! Gets better and better!
"A lot of stars travel the universe with companions" So basically stars are the Doctor?
i just thought those last systems are like brothers arguing for something "give me that" "no it's mine" "but i need it more" "no you don't" and then it just breaks.
@ 6:27 Phil says "when the fainter star goes behind the brighter star, the light hardly drops at all" ... but the graphic in the video shows the bigger drop in brightness!???!!!
So either Phil is wrong or the graphics (credit: ESO/L.Calcada) are wrong ... I'm guessing the graphics ...
What happens to the second star if the other one goes supernova?
+Jonathan White Very short answer? If the star that goes nova destroys itself, the companion star is ejected from the system for lack of a gravitational partner. It's mostly energy that hits the companion, so other than some atmosphere blowing off, the star itself remains intact.
physics.stackexchange.com/questions/25357/what-happens-to-the-neighboring-star-of-a-type-ia-supernova
+Jonathan White And of course, if the supernova is due to a core collapse, the companion gets eaten... )
en.wikipedia.org/wiki/X-ray_binary
+Jonathan White It is pulverized by the supernova, leaving little behind.
iambiggus you said short
IF??????????? the super nova is due to core collapse? IF??
Crash course astronomy is my favorite! You rock Phil!
Never end this show, ever. Thanks.
Mike Orr too late
This was a year and a half ago. "Never" still covers that I guess, but this is figurative speech in a RUclips comment section...
This shirt is one of the most beautiful I've ever seen! Apart from that...you're a wonderful teacher!
So much to learn! I love astronomy.
The animations are really great. Keep it up guys.
i really enjoy this series keep it up guys doing good work
Could you do one episode on the most weird star systems? I'd love to see you go up from binairies to quintuples and all the weird interactions (mass transfer, orbits) they must have.
Best RUclips series right here.
We've marked the episode that taught me something I didn't know. Best one yet!
playback speed at 0.75 makes this way easier to digest. Fantastic info.
This series is just spectacular. Just...grrarhadgrht! Can't wait for the next episode.
8:55 Harry Potter vs Voldemort!
Which star is Harry and which one is Voldemort? I’ve never watched or read Harry Potter at all.
I love this channel. I've been binge watching so many episodes I feel like my brain is going supernova!!
Excellent. Thank you PBS.
This series is wonderfully amazing!
I am wondering. Many videos have mentioned the speed of light and why none can go faster than light, but... None of the videos really explained how did we discovered such fact, how did we found out the speed of light.
So, my question: how did scientists discover the speed of light, and how did they conclude that nothing could go faster than that?
It's really bugging me. Thanks.
Relativity, folks.
I don´t know if this is because i´m a nerd, but this is super exciting!
I really enjoy your videos! Keep it up!
This is one of the best episodes yet.
I wish this series never end.
Spectroscopy!
killed me
Noticed a mistake at 6:35
The fainter star does not actually cause a bigger dip, but a smaller dip compared to when the brighter star covers the fainter one
I was skeptical of Crash Course without the Green bros, but Phil Plait's got me hooked. Also, I request occasional "space news" updates from you guys (New Horizons findings, Mars and liquid water...). That is all.
+Nick Tomasello If you're looking for space-centric news from this group of people, then Scishow Space might be what you're looking for. I don't recall Phil being on there and Hank is only one of 3 people that present on it, but it does fit the bill.
hmm, all the sources I can find say Polaris is a 3-star system, not a 5-star one
+Nikolaj Lepka A couple of places mentions two more distant companions.
That was one of my favorite episodes, and i wasnt expecting it.
this is the best series ever
I think you will find that many of the larger black holes are black, but not singularities. Look at the complex orbits of the stars around our own central black hole. They are complex, intricate, interweaving, but not chaotic and explosive. There are lots of black holes, white dwarfs and other things that can orbit a central location. And inside might well be many distinct and whole stars. If you check the whole of the big bang region contains enough mass to be black from the outside. Systems with many stars can be of many kinds, and some of them can trap light, but not gravity. And we can scan using gravity now. Richard Collins, The Internet Foundation
1/3 to 1/2 of stars are in binary systems? Mind. Blown.
You totally earned your thumps-up and subscription.
PBS are the best.
great episode. this is one of the few vídeos that actually teach me something new
Great job, love these episodes
MY favorite Crash course!!!
so here´s a question I´ve been thinking about for some time: the definition of a planet (as I learned it) has three aspects:
- it orbits a star
- it is big enough to have a more or less sperical shape
- it freed its orbit from any other bigger objects by its gravity.
If now a small star orbits a big one (like in the example with sirius) it fulfills all the criteria for a planet. Is it a planet or a star? or both? or what is wrong with the definition of planets?
it is not certain that a planet is always gonna orbit a star
sub to my channel
There's actually a theory/hypothesis that our star is in a binary orbit with the star Sirius. Interesting stuff, and theorizes/hypothesizes that the binary cycle lasts 24,000 years. Pretty cool :')
this episodes are getting better everytime wow!
Type 1a standard candles next episode?? I really hope you find the time to do another series, Phil. So good!
They are basically the multiple births of the stars. Contact binaries are basically the conjoined twins of the stars.
I can't believe you write these episodes AND convey them with such enthusiasm. This is one of the BEST astrology (jk jk astronomy) shows I've seen!
You guys are awesome, thank you so much for making these videos
These vids are excellent. Me and my 8 year old son love them
His shirts are the best thing about these episodes
man i love you so much, i'm gonna watch this a 100 times its so useful thank you so much
Thank you for the subtitles.
the moment you said there was a binary star system in the big dipper I went outside and found it.
My mind got blown after this video 💥
I've learnt so much from this. The universe is so wonderful.
This is probably my favourite series on YT right now. =D