Carl Sagan on the chemical elements

[87TheProdigy87]

he explains that there are an equal number of electrons as protons in every atom for example in hydrogen there is 1 proton so there must be one electron, but how do you determine how many neutrons are in each element? is there a way of telling how many neutrons are in an atom by knowing how many protons/electrons there are?

[walmartpimp2]

I bump into raziodynum all the time, there's some at the local Walmart.

[leokimvideo]

I wish Mr Sagan was my Chemistry teacher, I may have become something in life as he explains it all so well

[MartinGianola]

he was the best

[Bomberdoom]

correct word is detect no? or can we actually see them?

[atomicwave]

It's funny to hear him talk about this stuff and never mentions quarks.

[LoungeFly02]

hahaha that's horrible the way it ends!

To finish what he was saying: On the insides of stars. Stars can only make elements up to Iron in their lifetime, but it's when they explode as a supernova, do temperatures get even hotter and then iron is able to fuse with more helium and thereby are able to form more complex elements.

So we are all made from "star stuff" as Carl likes to say

[Shadow194]

@LoungeFly02 Btw he says Lead, not iron :p

[LoungeFly02]

@Shadow194 Giant stars fuse elements from H (Helium) up to Fe (Iron) during the end of their life. Once the iron has fused, no other heavier element may be fused and so, depending on the chandrasekhar limit the star will explode and become either a neutron star or black hole. Once the star goes supernova, only then are temeperatures hot enough to allow further, heavier elements to begin fusion including lead.

[GRAVEROTT]

In the inside of stars.

[Marictdude]

Then came dark matter

[Loyadd]

wats dem music

[7j8i9m]

@Loyadd The soundtrack for Cosmos features only pure, uncut, Columbian Vangelis. Er... he's not Columbian. But you get the idea.

[RonnocRetep]

Carl you are a legend

[youdontknowxpand]

Insides of the stars...

[seahawk124]

In the insides of the Holy Grail?

What.... wrong answer? *smug face*

[RichtoffenRoach]

I come to this video because I love Sagan's intellect and come to learn about atoms. It's so pathetic how religious stupid ape-people come here to start arguing and the stupid atheist how follow their game. My fellow atheist brothers: Just ignore the stupid fucks...it is the best thing to do.

[earlisto132]

Inside of the Stars, i think hehe

[ih8pinkos]

whhhhhhhhhhhaaaaaaaaaaaaatttt?­??????????????

whhhhaaaattttt is it!!!!!!!!!!

[MegaBEANER1000]

In the insides of stars, like our sun

[misinglink15]

Heads up guys a sequel to Sagan's cosmos is planned for a 2013 release and will be hosted by Neil degrasse tyson.

[Pronoun8472]

@misinglink15 epiiiic

[mtanyc]

2 people believe in God...

[LuceoLeo]

Bromine seems prety chill. MLIB

[lazzielazzie]

Carl was great at explaining things, he was a great teacher!

[Stefan1527]

Yeaaa I always knew Mercury is A KInd of Gold, If u know what I mean

how I love Sagan

[Stefan1527]

look at the black board before this clip he explained the googleplex!!

[jcorlettbr]

LOL He really had to be carefull about that uranium piece.

[aPpLeJuIcE37RainLucy]

we are made from starstuff :)

i love it

[BallerzTV]

His voice makes me tear up.

[Wiigameguy]

ah finally the best part about school, naptime

[iaminside1]

he just HAS uranium??? i hope thats a near dead piece, Carl Sagan is like radiation? w/e.

[sweeppickable]

 Carl Sagan makes it rain, what a badass

[mcRioRemedy]

its amazing how far weve come and how much we know now compared to when this video was made. go on sagan, R.I.P.

[tacoyum6]

1:32 NOOOOO!!!!

[randomclam898889]

Someone has probably already asked this, but was that little pellet of uranium depleted? I mean, I don't think he was picking up a radioactive material encased in glass with tongs. Anyway, I was just curious

[wowggscrub]

@randomclam898889 it was probly natural uranium ore . definitly not enriched uranium though

[randomclam898889]

@wowggscrub Oh okay, that makes sense

[Hamsammich111]

IN THE INSIDES OF WHAT?!

[wowggscrub]

@Hamsammich111 stars

[georgek19]

@Hamsammich111 Marcellus Wallace's briefcase!

[TanTanDaDude]

@Hamsammich111 Sarah Palin's behind

[VincentVega44]

@Hamsammich111 LMFAO

god damnit...

sun?

solar system? i think sun

[PruneJuiceInABag]

@Hamsammich111 The insides of the stars!

[RJL738]

One amazing indication to how amazing scientific advancment is is less than a century seperates not even knowing atoms really existing to knowing of particles quintillions of times smaller, knowing one or two levels below the atoms, knowing the rough number of atoms in the known universe, how many kinds there are and actually seeing some of them and this happened across two world wars, a genocide, economic collapses and general attacks one this knowledge.

[waksibra]

Sagan, protons and neutrons are NOT elementary particles. NOOB!

[pcusumano78]

@waksibra They were in 1980 before the level of quantum theory we have today.

[Electroabel]

did he say Cambridge University?

[Electroabel]

wait...pythagorean didn't believe that everytime is made by numbers (everything is made biy the idea " how much it has"),?

awesome lesons, i freaked out when you can't understand what he says almost at the end of the video and a few seconds before, its really important to understand the nuclear force, just the fact that the nuclear force can overcome the repulsion of the atomic particles, amuse me

[babalooga65]

I like that blazer he's wearing.

[IRELANDISMYCOUNTRY]

the temperatures are common in the insides of what??? comets????

[ladderfold]

@IRELANDISMYCOUNTRY Stars

[aardwolf71]

@IRELANDISMYCOUNTRY

Exploding stars.

[QuestionPerception]

Fuck! Sorry, I just accidently disliked this video.

[JordanPAT]

 I just learnt more about chemistry today in 10 minutes than I did in 5 year of high school chem.

[pab7984]

I went through all of high school seeing that stupid chart on the wall. And it took Carl Sagan and youtube to finally explain it to me. I think I had some bad science teachers in my public school experience. Not that I was the best student, but they did a very poor job of making the topics interesting. If Carl was my science teacher I would have been a scientist and not a lawyer. Instead, I spent my life in education avoiding science and math thinking it was boring. Boy, was I wrong...

[imtheduke]

I had forgotten all about these basics of science since leaving school but Carl Sagan continues to teach and allow people like me to learn about and rediscover science. This man is a legend.

[GabrielGroverMan]

i wonder where Carl Sagan is now...

[mchltlt1037]

@GabrielGroverMan

Hes passed away :(

[TheJimzhe842]

@GabrielGroverMan science heaven

[parisruiz1]

HE IS DEAD, JUST IN CASE YOU DID NOT KNOW.......... YOU WOULD HAVE KILLED HIM IF HE KNEW YOU ASKED THAT. PLEASE DO NOT DESECRATE WITH SUCH HORRIBLE QUESTION.

[CRISNCHIPS12398]

@parisruiz1 What is your problem?

[GabrielGroverMan]

@parisruiz1 i know he is dead. i wonder where he is now.... why is this a horrible question? you suggesting he is somewhere not pleasant?

[parisruiz1]

@GabrielGroverMan.... HIS REMAINS ARE IN A CEMENTARY, UNDERGROUND, IN NEW YORK. I SUPPOSE 'PLEASANT' IS IN THE EYE OF THE BEHOLDER. PERSONALLY, DEAD AND BURIED IN THE GROUND NO MATER WHAT STATE IT IS IS FAR FROM A PLEASANT PLACE.... AGAIN HE IS DEAD.

[cannywf1]

@GabrielGroverMan He's dead there is no "where is he now" he's dead.....!!!!

[impiccolomofo]

@cannywf1 As another YouTuber wrote, and in the likeness of MIB; Carl Sagan isn't dead, he just went home.

[59thElement]

I love how Sagan enunciates some of the elements. Especially the mispronunciation of Dysprosium (leaving out the first "s" and using a high "y"), and the elongated emphasis on Praseodymium.

[magneticpickup]

Like being taught Chemistry by Agent Smith.

[thedeathskittle]

"In the insides of..." ...

DUN DUN DUN.

WE MAY NEVER KNOW O____O"".

...until, we read Slacker665's comment that is

[thedeathskittle]

i think that background soundtrack has grown on me

[1RadicalOne]

It is "Alpha", by Vangelis.

Interestingly, the first - but not second - appearance it has in this segment, before being pushed aside by Victorian music, seems to have more ornamentation than the official version.

[SoulSurferGS8]

WOW!!!!! Those viles landing standing up was quite impressive!

[Jinclops]

whats the song called at the start?

[stuffedsonic]

Best ending ever.

[CPVYS]

If I had had a chance to watch Carl Sagan's video, I would have gone into Physics and fell in love with this subject for good...anyway, never too late to fall in love with a subject... or... shall we say "knowledge"?

[Anteep]

@CPVYS the subject he is talking about falls under chemistry

[featuringfranklin]

On the insides... of YOUR MIND.

[fartx211]

Ive always wondered: if these elements were made by fusing simpler atoms together, why is there more iron than say, lithium in the universe? iron is a lot heavier and should therefore be more difficult to make right?

also, gallium is my favorite element =)

[shackupyourstruly]

Maybe dropping the "Mother" part from "Mother Nature" will get you somewhere, @marasu66.

[AkiThePirate]

Hehehe.... 'Elementary particles'...

[redholmar]

...in the insides of the..STARS

[marasu66]

Turning Mercury to Gold seems so trivial ;^} . It's almost miraculous that adjacent elements on the Periodic Table can have such fantastically different properties.

[TiTSxxMcGEE]

i wonder if angent smith's voice patern was based off of him

[cristianfcao]

In the insides of the... STARS!!! watch?v=neMEo8ZrwuI for more info.

It speaks terribly of how bad our education system is that such an important, astonishing and even wonderful and poetic FACT is not known for most people. As Neil DeGrasse Tyson once said it makes me want to grab people on the street and say HAVE YOU HEARD THIS!!!??

[Karvante]

insides of the what?

I missed the most important part.

[Pahjx]

LOL 1:17 it looks like crack!

[edde8282]

whats the last word he was going to say? i am confused now :(

[technicallyabsurd]

"The Universe, all of it, everywhere, is 99.9% hydrogen and helium, the two simplest elements."

Ahh, how simple the Universe was before the discovery of dark matter and energy. I'd like to hear Sagan's counsel on it.

[1PintLasher]

@technicallyabsurd I'm sure he means "observable" matter. Were dark matter and energy known about our suspected at the time that he made this?? Surely alarm bells were ringing in someone's measurements.

[technicallyabsurd]

@1PintLasher Now that you mention it, dark matter was theorized in the time of Einstein and Hubble when the true scale of the Universe was realized. So yeah, my bad.

[MyrddinOtaku]

I'm a huge fan of his prrraaaaseodyymiummmm at 3:37.

Carl is and shall always be the top of awesome.

What a guy!

[MonkeyFunkR]

00:12 to 00:50 - kinda looks like the universe, galaxies clustered together with 'nothingness' inbetween. But in the wrong direction (small vs. large)

[marasu66]

Perhaps, given more time (and stars), there will be natural elements more complex than Uranium. I wonder if a natural 94-proton element would be just as dangerous as man-made Plutonium.

[muffinman2990]

no stars exist large enough to make uranium, to become massive enough to produce the heat required, they would collapse into black holes, they simply cant exist.

uranium is formed in super novea

[marasu66]

@muffinman2990 You need a star to get a supernova.

[Eagle0600]

@marasu66: It would be the exact same thing. 94 protons = Plutonium = deadly.

[shackupyourstruly]

@Eagle0600 Hmm. Maybe.... maybe not.

[Eagle0600]

@shackupyourstruly: The only thing you could change would be number of neutrons. Yes, that changes radioactivity, so I guess it's just possible to find a less dangerous isotope. Still, any atom that large can be expected to be highly radioactive no matter what number of neutrons it has.

[marasu66]

Maybe Mother Nature just knows how to make better superUranium elements?

[Eagle0600]

@marasu66: I'm hoping you're being facetious. In-case you're not, the way I see it is this: "Mother-nature", if said being exists, seems content to follow certain rules without making any aberrant decisions whatsoever. Within the scope of these rules, every-thing I just said stands.

[marasu66]

Aww, shoot! He got cut off before he could finish his sentence.

[FissionNonStop]

that little piece of music in the background when he starts talking is perfectly fitting, just beautiful what Carl has created

[MST3KLives]

How does Carl not collapse in weakness when around Krypton? He is Superman, after all. . .

[longfootbuddy]

....stars

[kitchenaut]

Errr-bee-um.

Awesome voice.

[Zee96969696]

very educational, i have missed out on school, but thank god i can learn online

[StuartHaitchXbox]

theres nobody better to learn from than Carl Sagan himself.

[mmmikeyxx]

@Zee96969696 I was just thinking the exact same thing.

[fermerwuvu]

@Zee96969696 same :)

[xXCirmsonRagexX]

@Zee96969696 Thank god as you watch Carl Sagan lol. now that's funny

[rubbermuck]

@Zee96969696 you mean thank science



[safster4]

@rubbermuck Shut the fuck up you atheist ass hole, I hav no prob with u and your "beliefs" or lack of them but don't pick on a guy just cuz he believs and u dont

[rubbermuck]

@safster4 Excuse me. I made an assumption that a person watching Carl Sagan was non-religious. As "thank god" is a common expression even amongst non-believers, I thought I was being helpful in correcting an automatic reaction that was actually incongruous with their own views on life.

I wish you no harm or offense, I just didn't think the Christian bible said anything on the subject of the internet.

Have you seen the entirety of Cosmos? I recommend it very much, it's a great series.

peace.

[LokiClock]

@rubbermuck Have you thought about why would you make that assumption?

[shamz0rz]

@LokiClock Likely because many religious people purposefully close themselves off from the scientific world because it shakes their faith.

[LokiClock]

@shamz0rz Some people, and when it suits them keeping their religion. That doesn't mean that all Christians are isolated from our cultural pool, which contains Carl Sagan, and that everyone who likes Carl Sagan is an atheist.

[shamz0rz]

@LokiClock Many religious people do that, I never said "all". Unfortunately willful ignorance is a trend in the religious community.

[LokiClock]

@shamz0rz But you did say all - you assumed everyone watching this was going to be atheist. So that's where you made the leap before, from your opinion of the religious as willfully ignorant, as opposed to a science and Carl Sagan loving atheist. Group persona.

[shamz0rz]

@LokiClock You are really stretching here pal. Re-read my comments. I'm not the guy you were originally talking to. Never said all, and to deny the willful ignorance of a majority of the religious community to scientific advancement is... well... ignorant.

[LokiClock]

@shamz0rz Well I wasn't asking you, so why did you respond? I didn't deny the validity of the opinion, I just pointed out that it was an opinion and (having assumed you were the same person) that it lead to an error of reasoning. Thus it should be scrutinized. Since it's your opinion and you're using it to justify the reasoning, your opinion is in error anyway.

[GuitarMannnnnn]

@rubbermuck

LOL BUUURRNNN..!!!

[Richy15251]

@Zee96969696 don't thank God, thank Sagan! ^^

[alwerks1]

@Zee96969696 Thumbs up my man!

[Gamajh]

@alwerks1

[alwerks1]

@Gamajh

Hi there, What happened to your comment? I only see at alwerks1 below your name.

[whiterottenrabbit]

Yeah, I bet her black hole attracts all the dicks within an event horizon of 100 miles.

[Zee96969696]

thats why shes not my girlfriend anymore

[Gamajh]

@whiterottenrabbit

 wat

[johndobson01]

Insides of stars, where nuclear fusion occurs.

[childofreletivity]

we try and recreat similer forms of fission in massive reactor but we havent quite perfected it yet we seem to put way more energy into the fuison and we get out of it

[bethanybabe]

stars / suns...come on where is the rest? Why does it stop?

[rolficus]

on the insides of super novas

[ZoSo0207]

probably in the inside of the suns..

I mean where esle can there be thousands of thousands of degrees warm :P.

[blackrabbitwhite]

stars

[Androrac]

Such temperatures are common in nature. Where? in the insides of... and the video ends, dammit

[ryandashsdotorg]

lol thinking the same thing

[Kimbahley]

Now we'll never know!!

[asseeninYOURDREAMS]

was that real uranium?! no way

[Androrac]

yes. what, you expected to be green? it's actually grey

[asseeninYOURDREAMS]

I wasn't questioning its color. I was wondering how sagan could hold the glass so carelessly because I thought plutonium was very unstable.

[asseeninYOURDREAMS]

**uranium**

[Androrac]

plutonium is unstable. uranium is not.

[large0ne]

The ramifications and the enlightenment we gain from this extraordinary account of the structure of matter is most refreshing and simple, which is more than I can say for my comment!

[HelplessVictim]

I say we vote on the coolest element.

I cast mine to Bismuth. It's pretty badass.

[KingKolunikus]

Tungsten is way cooler, dude.

[Ievolovel]

facepalm.jpg

[r0galik]

geekium ;)

[doctormurray91]

Red shirt, tan jacket. For the win.

[Eruonen]

IN THE INSIDES OF..

What a cocktease.

[alexzap2002]

insides of the stars

[kaushiksays]

@alexzap2002 Thank You.

[Boxrag]

@alexzap2002 The insides of you. 

[deddave818]

OMG! You have made my understanding a lot easier. It's so amazing by visibility of the actual elements shown. Very awesome all videos should be like this...

[CrunkRockSteadyEvan]

all scientists should be like carl sagan, or at least all science teachers, wed destroy the myth of nerdy science right away

[Q9R42]

Not only is it easier to understand, it also helps prove it's existance (:

[avadakedavra62442]

assium

[Triundi]

It the insides of YOU DON'T GET TO KNOW.

[wowggscrub]

i think he was going to say the sun.

[bscutajar]

the big bang

[KamNcK]

very good clip...thanks=)

[login001login001]

whats the name of that music

[andreiduffy]

Vangelis - Alpha i think

[Kaarel314]

Wow thats probably raeviliss`s whole vocabulary.

[richiebabe24]

I'm sure he received some help.

[Kujien]

lmao