Going Nuclear with Neil deGrasse Tyson

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Neil deGrasse Tyson and Chuck Nice take a close look at nuclear power. How is it created and how do we harness it? You can learn even more at brilliant.org/StarTalk/.
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Hosts
Neil deGrasse Tyson, Chuck Nice
Director
Dave Wiskus
Science Editor:
Neil deGrasse Tyson
Writers:
Brilliant.org, Chuck Nice
Science Writing Team:
Aaron Miller, Blake Farrow, Danielle Scarano, Lee Weinstein, Josh Silverman
Animation Director
Bård Edlund
Animator
David Powell
Editor
Eric Schneider
Sound Designer
Jay Pellizzi
Music
Airplane Mode
Producers
Amanda McLoughlin, PJ Scott-Blankenship, Brilliant.org, Ben Ratner
Support us on Patreon: / startalkradio
Subscribe to StarTalk: ru-vid.com...
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About StarTalk:
Science meets pop culture on StarTalk! Astrophysicist & Hayden Planetarium director Neil deGrasse Tyson, his comic co-hosts, guest celebrities & scientists discuss astronomy, physics, and everything else about life in the universe. Keep Looking Up!
#Nuclear #StarTalk #NeildeGrasseTyson
0:00 - Introduction
0:13 - Discovery Of Radioactivity
1:10 - Energy Of Mass
1:31 - Beginnings Of Quantum Physics
2:52 - The Chain-Reaction Of Nuclear Fission
4:25 - How Nuclear-Fission Is Controlled
5:14 - Thermonuclear Fusion
6:42 - The Science Of Supernovas
7:31 - Nuclear Energy & The Sun
9:18 - Sponsored By Brilliant
9:39 - Closing Notes

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Опубликовано:

1 июн 2024

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Комментарии : 1,6 тыс.

@physics_hacker 6 лет назад

Neutron: *goes up to bar and orders drink* How much? Bartender Proton: For you? No charge. Neutron: You sure? Bartender Proton: I'm positive.

@CarFreeSegnitz 6 лет назад

Bartender : we don't serve people who violate causality. A quantum physicist walks into a bar.

@Marleystrummer 4 года назад

😂😂😂

@ryuoh6928 4 года назад

Clap... Clap... Clap...

@ScottBoudreau1826 4 года назад

This joke is in fallout

@johnathansirko3290 4 года назад

Respect.

@Zygarde365 4 года назад

people: NO NUKES! the sun: *laughs in nuclear reactor*

@Sync_Shard 4 года назад

I know this is a joke, but the sun is not a nuclear reactor. There is no uranium, thorium, or plutonium. The sun uses fusion to generate energy. If I remember correctly, nuclear reactors use fission. Fusion is atoms combining, fission is atoms splitting apart.

@weepingod 4 года назад

@@Sync_Shard ikr he was so inaccurate he just simplified it to make it more palatable to the general masses

@marchorsting8059 4 года назад

It's a gravity and hydrogen fueled fusion reactor that never takes a break

@chaoticmasterpiece 3 года назад

@@Sync_Shard Fission is the splitting of atoms, either by radioactive decay or by collisional impact. Certainly radioactive decay occurs because the sun contains many radioactive isotopes including thorium, uranium etc. Basically fission happens irrespective of any environmental constraints because it is an intrinsic property of radioactive nuclides. - image.gsfc.nasa.gov/poetry/ask/a11197.html

@Joel-ee4yh 3 года назад

@jocaguz18 commercialy viable fusion reactors aren't available yet tho

@EDKsurly 6 лет назад

There needs to be more info like this. Too many people fear nuclear power without knowing why.

@Duncan_Idaho_Potato 6 лет назад

Exactly. Nuclear power is safe. As long as you use your brain and learn from past mistakes, then you can build a safe nuclear power plant. If you look at the accidents that have happened in the past, there's always a HUMAN explanation for why the accident happened. The technology is sound, the humans using the technology are the ones who cause the accidents. That's something that can be fixed/prevented.

@dwarfie24 6 лет назад

Theres still the problem of waste though.

@Art_of_Syn 6 лет назад

The waste is much smaller than all other current sources in use, it is also highly recyclable, however there are laws preventing or road blocking recycling of waste. And when we get Fusion sustainable, the waste is even smaller which is also 90 some odd % recyclable, and that non recyclable portion that is left over (somewhere in the range of 1 cubic foot/year) is not highly active and 100% recyclable or reusable within 100 years. Also the "smoke" people always love to show pouring from the towers as if to say "see look at all this pollution.... blah blah blah" is 100% steam. In other words its safer, cleaner, produces waaayy more energy and makes f'n clouds!! =)

@uncleblunts5 6 лет назад

EDK ReefMeister Nuclear power is nothing to fear. Watch Thunderfoot.

@rgaud8 6 лет назад

Look up Bill Gates' new generation of nuclear power he's investing in. It's literally 100x more efficient with very little waste and no threat of meltdowns.

@mikekotouc6684 3 года назад

I love how pleased Neil is with himself when he tells one of his science dad jokes. The guy is a treasure.

@Flippokid 6 лет назад

This is the first time nuclear fission has been made clear to me.

@marvinmartinsYT 6 лет назад

N7Mith That’s why I like this channel. Layman’s terms. Anyone can get a basic understanding from these video. Maybe not flat earthers lol. But most with a working brain can follow.

@lohne87 6 лет назад

That is just sad .. there is either something very wrong with your education system - or you have missed some years in middel school. Are you by any chance M'erican?

@Flippokid 6 лет назад

No, Dutch. They basically taught the same thing but the visualization in this clip just suddenly clicked. I remembered most of the facts, 'that this and that happens', but now I understand how and why these things happen.

@electricfeel9501 6 лет назад

he simplify it so the ordinary person can understand it. if you take a college Physics and Chemistry class it goes into depth and watching Neil Tyson won't help you pass the class....

@seandafny 6 лет назад

N7Mith im sorry

@RexRagerunner 5 лет назад

*DAMN YOU IRON!! YOU BLEW IT UP!!*

@mr.ovenbox4941 5 лет назад

YOU DAMN DIRTY METAL!!!

@driedmangos8433 5 лет назад

Mr.OvenBox LMFAO im dead 😂😭💀

@adityahegde4560 5 лет назад

Lmaooo dude bad pun 😂😂😂

@ProdigyXI276 5 лет назад

proof that copper is the best metal

@mainemceachern1521 4 года назад

DAMN YOU IRON ... YOU BLEW IT! Lol

@kirkgonzalez3163 4 года назад

As I keep watching Neil, I slowly tend to hate teachers who don’t teach like him.

@kesyj13 3 года назад

IYKYK!

@spidaxtreme 3 года назад

To be fair, they barely get paid.

@caesarwiroreno7441 3 года назад

Please, do not hate the players. Hate the system. Its our educational system that fails us. Teachers is just a person who got told to teach, through set of curriculum. While what we needs is an educators, who intrigues our interest in things. And only then we can get teached

@samogufonianrockstar7510 3 года назад

I fell the same way and cudnt agree more with you!

@klaytonpeterson1596 Год назад

Don't hate...become a teacher...and learn from teachers/mentors..like Neil

@IamKnucks 6 лет назад

I would make all StarTalk videos compulsory for science classes in schools.

@whereswa11y 6 лет назад

For flatearthers?

@HolaEspanyol 6 лет назад

wheresa11y natural selection will take the flat earthers eventually😂

@Ori_Ovadia 6 лет назад

And religious classes aswell :)

@WouterCloetens 6 лет назад

... or, you can have actual science lessons in school, and learn the theory behind it (without the super dumbing down), learn about the operation of nuclear power plants, and then visit one on a school trip. Like I did in high school. It was awesome.

@marvinmartinsYT 6 лет назад

IamKnucks Nail on the head there!

@InfiniteCuriosity 6 лет назад

I love Neil

@saad1653 6 лет назад

Don't we all?

@boriserjavec6470 6 лет назад

Are you gay?

@stoniecad7805 6 лет назад

Boris Erjavec I am and I want that sweet ass. Got a problem with that?

@JonB55198 6 лет назад

yeah but his sidekick is annoying. I realized he's meant to play the role of a chuckle head. But, it gets in the way sometimes and seems a little affected.

@johnking1200 6 лет назад

i agree! he interupts way too much

@BakedPhoria 4 года назад

I wish I knew about physics when I was younger...I am in so much love with physics!! Everything we have made is because of physics. Without it we wouldn't understand anything!

@3dgar7eandro 2 года назад

You sir have discovered a hole new world of truth and illumination 🦾😁👌🏻👌🏻

@TommoCarroll 6 лет назад

That was a great graphic used to explain the processes in stars! Beautifully done!

@adolfodef 6 лет назад

It is even more amazing that you may think: That last bit with the iron "pumping" the core was done in realtime [a supernova requires a few seconds to happen].

@TommoCarroll 6 лет назад

You're right, that is even more interesting! As we explain in our update video (which you can check out if you haven't :P ) we've got a background in biology, so physics is something we actively learn about on a daily basis, and supernovae are up there with one of the most intriguing topics right now, so thanks for the extra info!!! :)

@JoeDeglman 6 лет назад

The SAFIRE project is studying how a star works. We will soon create power the way the Sun does and leave nuclear power behind us. We already have fusion-powered aircraft and have proven the proton- proton chain doesn't work. Plasma power like the SAFIRE project is the way it works.

@jasp9661 6 лет назад

We learned this at school but Neil always manages to teach me something new *Cough School system Cough*

@GeneralPet 6 лет назад

school makes civilians. Universities make scientists :) Although schools are also bad at that. lol

@jasp9661 6 лет назад

Madara Uchiha well idk what school you went to but you can't assume anything like that without context

@rurirotaru516 6 лет назад

Sir Deldo anyone who ever went to any public school in the United states knows from personal experience. The kids didn't want to be their slacked off made fun of teachers. It was normally cooler to not learn to skip school do all the things to go against the establishment. So when the school does all ot legally can to teach a person and that person does all they can to nor learn then it's that persons own stupidity that they are dumb. When those paying for the school see that students don't want to learn grades going down and nothing is changing it those schools become just daycare and hangouts as Noone wants to put money where there is no turn around. so they stop plugging in money. And I could drag this out for parents society entertainment and personal responsibility. But I might as well just write a book at that point. So people being stupid is their own fault in the end cause of their own choices. Any argument against that neglects to take into account when from these low income and poverty stricken areas and schools some people still succeed. and now with all knowledge at our finger tips. If you are a stupid person it's your own fault.

@jasp9661 6 лет назад

ok you have a good point there but I'm in the UK.I do listen and do the work (our school has little rebellious students )And our teachers are pretty cool.Doesn't mean I'm stupid for not knowing things I haven't been taught

@willofdodge1 5 лет назад

Being force to learn and wanting to learn can yield different outcomes

@rogerdodger5886 6 лет назад

I love their chemistry . Great way to share knowledge

@TommoCarroll 6 лет назад

It really is isn't it? It's like those language-learning apps that have you learning with one of the hosts - kind of calms your nerves about not understanding things straight away by knowing other people go through the same learning curves!

@terryk1233youtube 3 года назад

Chuck nice has an awkwardness about him that i love

@limabravo6065 2 года назад

I had a conversation with my brother in law over nuclear weapons, where he was under the impression that they are horribly complex and couldn’t be built by anything be other than super geniuses like those at los alomos labs. So I told him that the first weapons were built back in the 40’s with no computers, and no way to know if their designs would work. They also managed to pull off nuclear fission with nuclear fuel that they had to make. The bomb that blew up Hiroshima is about as simple as you can get, take two pieces of uranium 235 and combine them them violently and boom. He was still skeptical until I went on Wikipedia and showed him the design.

@granadakimj 6 лет назад

So... A neutron has a Multi-pas...?

@johnthaxton9235 6 лет назад

Captain_Crash_DK Nice reference.

@Duncan_Idaho_Potato 6 лет назад

Leeloo Dallas Multi-pass. Mull. Tee. Passsss....

@OhKaeThen 6 лет назад

Kor-bin Dal-las multi-pass

@Fordi 6 лет назад

Noo-tron!

@csgstormer 5 лет назад

Multi-pass 🙏😘💥

@GingerBeard31 6 лет назад

You two make learning funny and enjoyable! Keep up the wonderful work!

@AdamDeBeers 6 лет назад

Great video guys, good work as always. What about episode about molten salt reactor?

@grumpyjoe3298 6 лет назад

Wow that was genuinely an amazing lesson! Love it! Thank you StarTalk

@JordanMillsTracks 6 лет назад

I love startalk so much, also I'm really liking that you have an animator to explain things more clearly now!

@spacetimedilation2740 4 года назад

Hey guys thanks for all the shows.

@TypeErrorDev 2 года назад

I learn something new every time I watch these two...freaking love it!

@37parman 6 лет назад

Beautiful “mind”...beautiful “voice”....LOVE Neil

@JustinPerea 6 лет назад

These have been great videos. Love the animations and art style.

@haythamprg7343 Год назад

So much information and interteiment here.. Love you guys!

@wangchong94 6 лет назад

love these two, funny and very interesting

@GoldSrc_ 6 лет назад

*DAMN YOU IRON!* That made me laugh more than it should :D

@luisfelipehernandez7920 6 лет назад

Loving this new format! Looking great with the animations.

@edwardantwi5462 4 года назад

Glad i subcribed ... you make science, Physics really fun.

@UrslurStarSky7 6 лет назад

This is my new favourite RU-vid channel.

@TommoCarroll 6 лет назад

It's great! It's nice to see him talking about things he's passionate about in a really simple and relaxed environment instead of in front of a massive crew for a scripted tv show (not that we're complaining about those though!)!

@carlosbornes 6 лет назад

I was expecting to hear your opinion about Nuclear Energy. Like if it is or not the more capable way of reaching a zero emission in a near future. Also talking about the 4th generation of reactors with Thorium. I guess you can make another video on that.

@Fordi 6 лет назад

I was hoping for this, too. Though, for a rehash of how nuclear power works, it was a good vid.

@sidewaysfcs0718 6 лет назад

"Thorium reactors" are a myth, they would never work.

@0ooTheMAXXoo0 5 лет назад

Nuclear plants do not get talked about much because they cost so much to build compared to any other way of making electricity. They also cannot ramp up or down quickly so you still need something like a battery to balance the grid so why not use renewables instead?

@uwunora 6 лет назад

You’re all really awesome, I keep learning and you make it fun, interesting and doesn’t take away my curiosity like school Keep up the good stuff

@RTH1992 6 лет назад

Damn i really love these videos. So fun to watch and informative aswell. Keep up the good work

@neinist 6 лет назад

Thank you A levels for teaching me this so I can understand what they are saying. This is really interesting to me.

@thevitruvianman9781 6 лет назад

Aaryan Ali Oh yes yes As Physics you're right! Radioactive delay haha

@Adam-mb1jn 6 лет назад

I'm in year 10 and understand it??

@neinist 6 лет назад

Adam what I meant to imply is that I'm grateful school is teaching me this subject as I have a passion for it.

@thevitruvianman9781 6 лет назад

Aaryan Ali I get you.

@ASLUHLUHCE 6 лет назад

The physics we learned at the end of year 11 (fission, stars) was the only interesting part of the entire course

@shaggycan 6 лет назад

There are actually newer designs of fission plants that are far more efficient than the ones currently in use, and produce MUCH less waste. en.wikipedia.org/wiki/Generation_IV_reactor

@0ooTheMAXXoo0 5 лет назад

Still far more expensive than any other forms of electrical generation.

@nickromo8195 4 года назад

@@0ooTheMAXXoo0 see that shouldn't matter.. We're choosing money over our planet..

@johnyepthomi892 3 года назад

I love the intro soundtrack too.. very uplifting!!!

@pischur 6 лет назад

I love to see you guys picked up on Brilliant! I have been using the free version for some time now (great content!), but the promo swaid me into going premium. Thanks for facilitating the learning! Cheerio, Pieter

@CL_Audio_Tuning 6 лет назад

Would love to know what Neil's opinion is on Thorium reactors.

@trulyinfamous 6 лет назад

Surprisingly, nuclear power could be one of our safest non-renewable sources of energy, given we are cautious about it. As with all non-renewable sources of energy, we must learn to use them correctly and safely in order to minimize destruction, but those energy sources will always cause harm to the environment, one way or another.

@trivialgravitas9188 6 лет назад

Nuclear actually (despite a couple colossal fuckups) has a safer track record than Solar and Hydroelectric (which has had even more colossal fuckups, and a lot of minor ones, but you've never heard of them). Beating wind for human safety would be really hard though, and it's not clear whether Wind or Nuclear is safer.

@Fordi 6 лет назад

To add: while non-renewable, nuclear has a lot of options for enhanced sustainability. Reprocessing (fuel recycling, at about 80-90% efficiency) is one. Another is seawater extraction, which, once economic to do, increases the total fuel available to us by a factor of millions.

@pseudotasuki 6 лет назад

Not to mention the abundance of fertile (as opposed to fissile) nuclear fuels. We've been using uranium because it's the best fuel to use when starting a nuclear energy program from scratch, but most of the technology required to burn thorium is nearly ready for commercialization.

@ericlanglois9194 6 лет назад

Trivial Gravitas, Wind might not be dangerous to humans but it's almost as dangerous as fossil fuel based energy when it comes to wildlife. Lots of birds are killed by wind turbines and unfortunately there's no way to stop it from happening.

@amag140696 6 лет назад

Eric, that's utterly false. Wind-energy-related bird deaths are a miniscule amount compared to the impacts pollution and human development (not to mention cats) have on bird populations. We're talking millions of bird deaths just from cats alone compared to wind energy which takes some thousands. Then considering the widespread and undeniable impacts fossil fuel has on the Earth's greater ecology and you're comparison is laughable.

@shivisiva3074 6 лет назад

Im really hooked to this channel . pls keep it coming

@manishadwani386 6 лет назад

Please upload new episodes frequently 👍🏻👍🏻👍🏻 this was amazing

@adambomb42x 6 лет назад

Mr. Tyson, I'd love to hear your take on the molten salt thorium reactor design.

@0ooTheMAXXoo0 5 лет назад

If you know anything about them then you know that we do not have materials that can handle the corrosion of the molten salt. What else is there to say until that materials problem has been solved?

@MyAidanRox 4 года назад

@@0ooTheMAXXoo0 untrue, these reactors are being used today just not as widespread. Most likely corporate interests peddling the corrosion fear and other embellished misinformation in the name of profiteering... Or maybe in the last year new advances made it to market.

@Jamus1975 5 лет назад

I feel smarter thanks to Neil. I know I'm not but he makes me feel it. Love Neil.

@drewchill 6 лет назад

Keep looking up ^-^ love this show!

@gphiproductions 6 лет назад

Very cool! Always cool to learn something new! I greatly appreciate this channel and the information that you guys bring!

@Monochromicornicopia 6 лет назад

Iron can and is fused in the largest stars, however it doesn't occur for very long because fusing iron does require more energy than is released during fusion (net energy loss), causing the star to lose its battle with gravity. When gravity wins, the stellar material free-falls toward the denser core, rebounding off it in a tremendous explosion called a supernova.

@AstroGremlinAmerican 6 лет назад

Correct. Fusing iron takes more energy than it releases. Of course even more iron and other heavy elements, including gold and uranium, get formed during a supernova.

@Monochromicornicopia 6 лет назад

Many high mass stars can create heavier elements than iron before they go supernova by beta -capture- decay, its pretty interesting.

@AstroGremlinAmerican 6 лет назад

Beta capture? Beta particle is an electron. Can make an neutron but that only makes an isotope. en.wikipedia.org/wiki/Electron_capture

@badbeardbill9956 5 лет назад

You mean beta decay? Or how about the high energy of the supernova fusing heavier elements than iron, but losing energy in the process.

@Monochromicornicopia 5 лет назад

@Bad Beard Bill You're right, I meant beta decay. And yes, supernova are responsible for the existence of most radioactive elements.

@willfs88 6 лет назад

I hope this question reaches you. Where does the warm go when the space station receives sunlight if there is no atmosphere to exchange thermal energy?

@flashpointwhite 6 лет назад

I like this question

@Cat-ct9hn 6 лет назад

Willian Fernando The ISS is very well isolated to maintain a normal temperature. Excess heat is radiated by the EATCS (External Active Thermal Control System) using ammonia flowing through pipes, with radiators around them.

@duomis123 6 лет назад

Energy can be released and recieved in multiple ways, light is one of them. That is what's happening. If that was not the case the sun would not be able to transfer heat to the earth.

@duomis123 6 лет назад

Adding to that, space stations are ussually extremely isolated from the surrounding enviroment, meaning that most of the light hitting the station is bouncing off of it (excluding that recieved by the solar panels). Otherwise it would be extremely difficult to control the temperature inside the station.

@Cat-ct9hn 6 лет назад

duomis123 Exactly. Any object with a temperature releases infrared radiation.

@IvanValienteGoogle 6 лет назад

Awesome video! Clear explanations and animations.

@klaytonpeterson1596 Год назад

Excellent....well done...informative and helpful...Thank you, Neil...

@gordonmcdowell 6 лет назад

Fukushima wasn't really uncontrolled fission, you'd have to bring "decay heat management" into discussion to fully explain that accident. Fission had halted long before the meltdown. I'd hope Neil would discuss alternate coolant options on his show some time, including the notion that the fuel itself need not be in solid form: That would be a "Molten Salt Reactor".

@TheFarmanimalfriend 6 лет назад

Don't be an idiot. Fission is why Fukushima happened. Because of the tsunami, it became uncontrolled fission because they lost the ability to cool the reaction, but it was still fission. You should take some physics courses.

@gordonmcdowell 6 лет назад

TheFarmanimalfriend “Decay Heat” is NOT a synonym for “Fission”. Fission had stopped long before the coolant flow stopped.

@Fordi 6 лет назад

All of the Fukushima reactors were offline (that is, not fissioning) by the time the tsunami hit, but they still had a lot of decay products (the things left after fission happens) left. Decay products are highly radioactive, and usually after the control rods are inserted (stopping fission), it takes up to 72 hours for the decay heat to fall to levels where the heat can be passively removed. The flood shut down the active decay heat removal systems. Without decay heat removal, the temperature within the core of reactor 1 rose, until it was hot enough that the fuel cladding started to react with the coolant water, releasing hydrogen. Meanwhile, pressure was high enough, due to the high temperatures, that hydrogen could diffuse through the metal walls. Eventually, when the hydrogen was sufficiently mixed in with the outer air, it exploded, blowing off the skin of the building going out, and damaging secondary containment going in. Similar situations occurred in reactors 2 and 3, on slightly longer timelines, since they were newer and had slightly better passive heat removal. Reactor 4 had been defueled for maintenance, and didn't go up. Reactors 5 and 6 had sufficient passive heat removal that they just about avoided explosions (though, they did suffer internal pressure damage). In short, gordon is correct. They did not blow because of fission; theirs were not "nuclear" explosions.

@davidwalters9462 6 лет назад

Bryan, well stated. That's is exactly right. Some anti-nuclear people purvey the lie of fission occurring, which it didn't. The meltdown happened because the fuel to the emergency diesel generators was wiped out (stupidly the put the fuel tanks for the diesel fuel at the intake structure because it was...*cheaper*). At any rate the tsunami is what really caused the meltdowns to occur. Also, it is worth pointing out that no one has died because of this happening. World wide the nuclear operators went through a paradigm shift in safety, establishing auxiliary pumps, station-black out scenarios, hardening intake structures and so on. Nuclear energy has killed few people than any other source of energy EVER. Something to think about when people start screaming at the moon. I feel sorry for the farmanimalfriend who purveyed this nonsense and actually doesn't know what occurred at Fukushima's reactors.

@sabotsabotskij7047 6 лет назад

Agreed. If you're going to oppose nuclear energy - at least do with reasons based on facts regarding nuclear power plants. Newer reactor designs are far safer and resistant to meltdowns caused by natural disasters such as the one at Fukushima. The only unavoidable problem with fission reactors is the highly dangerous waste product that is expensive to store safely. It's still safer than fossil fuels right now, and it's cheaper than going full renewable. The only scenario where it's not a win-win to utilize fission energy is if commercial fusion energy were actually a viable option in the forseeable future.

@brendarua01 6 лет назад

Geek analysis. Gotta love it. I'm glad they hand fun with this hehee

@ANURAG-pb8ve 4 года назад

This is what I liked about this channel, they focus on really good concepts without messing it too much. Good work sir, keep growing and reach 1million subscribers👍👍🙏

@blaynewayne 5 лет назад

My favorite RU-vid channel Love the talk!

@fyutffdtuibgfetu 6 лет назад

Neil deGrasse Tyson 2020

@ianprado1488 6 лет назад

John Smith absolutely

@jasonalvarado3246 5 лет назад

No, Ben Shapiro is running 2020, Neil can have the next one after that. Ben Shapiro called dibs first.

@TheAngryIntellect- 4 года назад

You don't want someone smart to run the country, you want someone that scares the shit out of all other countries.

@The3rdPlateau 6 лет назад

Please do an episode about liquid fluoride thorium reactors! Not all nuclear reactors can melt down, some are far more passively-stable. There are tons of advantages to LFTR vs. the traditional pressurized water reactor. LFTR operates at atmospheric pressure instead of 2300 PSI, doesn't use water as coolant, and can't melt down because the fuel is already dissolved in a liquid!

@0ooTheMAXXoo0 5 лет назад

They do not work yet is why they do not get talked about much.

@kimopuuwai9281 5 лет назад

@@0ooTheMAXXoo0 except that they did.

@komranbehbehani6379 3 года назад

I appreciate the other guys just as much or more for asking questions that he might already know for us to understand! Thanks you guys big fan, check more like an AC unit of you guys!

@paulflores3324 Год назад

I can't imagine Startalk without Chuck!

@pegasBaO23 6 лет назад

If fussion past iron consumes so much energy it collapses the star, how do heavier elements get created in decent abundance Edit: Bad english correction

@Duncan_Idaho_Potato 6 лет назад

That's a GREAT question, you're clearly a thinker. All elements heavier than iron are ONLY formed during a supernova. That is the TITANIC explosion that occurs at the end of a massive star's life. We know that the sun and the solar system formed out of the gas cloud created by an ancient supernova because of the presence of heavy elements here on Earth and elsewhere in the solar system.

@pegasBaO23 6 лет назад

ProgHead777 I imagined that'd be cause, but I wasn't sure, I also imagine elements heavier than Iron, but with atomic mass close to it, also get made and contribute to the collapse of the star

@timframe570 6 лет назад

pegasBaO23 PBS space time has great material on this process. Also another way heavier elements are formed is through neutron star mergers. LIGO detected the first of this kind of merger several months ago via gravitational waves.

@HOLLYWOODUNAPOLOGETIC 6 лет назад

"Damn you, iron!"

@RocksmithPdl 6 лет назад

these are so much better than the stale podcasts. Keep doing them and add a bit of casualness to it too :)

@718Insomniac 6 лет назад

These guys are great together. Great video, I'm sharing.

@codythelee573 6 лет назад

N🌞 Nukes....to funny..

@ChintanPandya01 6 лет назад

Too*

@TommoCarroll 6 лет назад

Haha, you can imagine Neil making sure to stop that person just to explain this to them aha!

@tertiary7 6 лет назад

hopefully they were being ironic. ;)

@Duncan_Idaho_Potato 6 лет назад

Don't think they were consciously being ironic. I think the point was supposed to be that we should use solar power instead of nuclear power. The irony (for those who don't get it) is that the sun IS a nuclear (fusion) reactor that is 333,000 times the mass of Earth. Granted, it's 150,000,000 km (93,000,000 miles) away, but it's a nuclear reactor nonetheless.

@codythelee573 6 лет назад

Still ..it's punny though..:P

@faragar1791 6 лет назад

I wonder what Neil's thoughts would be on Thorium Molten Salt Reactors?

@anuragshah6243 6 лет назад

I'd think he'd think they'd be cool, cuz like molten salt reactors are cool af (not temperature wise though)

@Fangoros 6 лет назад

Would love to see his opinion on it. Because for now, all I read about it seems too good to be true, but if a popular scientist would commend it, that would make it amazing.

@timframe570 6 лет назад

Would love to see one of the big science names support the MSRs. Gen 4 reactors have huge potential.

@jamesgodfrey2102 6 лет назад

They are a bad design. You need to first understand Neutron Thermalization requirements. We, US designed reactors use water to both remove the heat and to thermalize neutrons, this way, if we lost water, there is no way possible to sustain a reaction.

@timframe570 6 лет назад

James Godfrey I want to preface that I believe nuclear is the solution to our power needs and support nuclear power in general. The MSR, however is a better design then LWRs for some essential reasons. First the MSR is walk away safe. This is possible for several reasons. The MSR is designed to operate at high temperatures and is already in a liquid homogeneous form. As the temperature increases in an uncontrollable situation a salt plug will intentionally melt where the reaction fluid will drain into a kill tank. This tank has neutron absorbing materials killing the fission process. The LWR relies on water and due to the temperature requirements for the power generation cycle, it must operate at high pressures. The high pressures require pressure vessels and a massive containment dome that dramatically increase cost and the severity of a meltdown is higher due to the potential pressure vessel rupture. The water itself is an issue due to the fact that free neutrons cause water to break into its components and must be recombine to recycled. Additionally the MSR being a homogeneous fluid is far more fuel efficient than solid fuel reactors. Within the MSR we can use thorium, used fuel rods and decommissioned nuclear weapons as fuel. The waste streams half-life is considerably shorter in the range of 300 years rather than 100,000+. There are technical challenges with reprocessing and others but these can be solved.

@partytor11 6 лет назад

What I love about the host is that he's entertaining enough to keep you hooked, knows enough about the subject to not look stupid but still asks the relevant questions that the most novice viewers can learn from! Brilliant work! It's easy to let the guest (Niel Degrasse) do all the work by having the host be unknowledgeable but thankfully you guys don't fall into that trap!

@aceofacez10 6 лет назад

I love these videos with the added visual elements.

@devineandconquer9508 6 лет назад

whoa i just learned so much from this, just a lot of "ohhhhhhh that's how it happened"

@DeegoL9 6 лет назад

What about molten salt reactors?

@TeddyKrimsony 6 лет назад

or Gas Reactors

@PJSM94 6 лет назад

Or breeding reactors.

@bazookajoe6133 6 лет назад

+Jed Miller aka my bedroom

@Kian139 5 лет назад

It is the same process in molten salt reactors.

@RChamp116 5 лет назад

Normally the fluid that absorbs the energy from the nuclear reaction is water (Under pressure) which converts to superheated steam. This is called the working fluid. Well, molten salt, gas, or even sulfur can be a working fluid.

@richarddavis5976 2 месяца назад

The best! Thank you all for doing what you do

@ibrahimjaleel5900 2 года назад

The answer for my life long question. Excellent. Thank you

@coreymay918 6 лет назад

solar power is nuclear power

@hyperx72 5 лет назад

Just at a safe distance

@alecnolastname4362 4 года назад

It's to bad it's not hot enough to boil water to spin a turbine. Maybe with a large enough lense.....

@ojeshbogati7251 4 года назад

NdGT: I am a child trapped in a man's body. 2:13. His words not mine.

@vallejodroning9578 4 года назад

These are super fun to watch

@stochastic_dreams 3 года назад

Wow! That is the best explanation I've ever heard on fusion!

@johnhege6502 2 года назад

Always considered it a testimony to the genius of man to be able to develop such an incredibly complicated, expensive and dangerous way to boil water.

@stevenl9395 6 лет назад

Don’t you usually use uranium 235 atoms, which create 3 and not 2 new neutrons?

@star.soaked.wanderer 6 лет назад

Steven Lormuß well, not me, personally, no

@orionred2489 6 лет назад

I had to go look it up. It seems the number of neutrons varies depending in the speed of the incoming neutron. The equation I found for u235 shows the numbers as 2.4

@animeluver536 6 лет назад

no, uranimum 235 creates 2.03 neutrons per fission.

@orionred2489 6 лет назад

Sorry, I thought that meant like an average for calculating the yield or something.

@AmazingJayB51 6 лет назад

Curious, where do they get the neutron from to start the reaction?🤔

@SlothfulTom 6 лет назад

best explanation of nuclear fission/fusion i ever heard. good video, keep going.

@semanavidi8694 4 года назад

This was by far the best presentation that I have ever seen on the subject. Thanks Dr. Tyson, I met you at Wright Sate University in Dayton Ohio.

@mactassio21 6 лет назад

0:20 Back then, the church people were calling it proof that hell exist. The god of the gap folks.

@GreyPunkWolf 4 года назад

They'd also tell all parents that if their children were playing RP games instead of football that would lead to them being possessed by demons. Sooooooo yeah this is far from any scientific method, in fact they do the exact opposite and try to make it look like a fact when it's just biaised info with no evidence and no method, just to prove a point they otherwise wouldn't be able to, using emotions and feelings as proofs where they are in fact the very reason of why their method is wrong and far from any science. Sad days. Loads of church people have been huge pioneers in sciences over the centuries, it's so sad to see obscurantism go back up IMO.

@LRBO 4 года назад

God bless Neil Degrasse Tyson ❤

@kevins8575 4 года назад

Great series!

@madelinemorgan6502 5 лет назад

Great video! I learned a lot!

@Barsabus 6 лет назад

The universe is just a tool music video and it's all good.

@vaibhavdighe344 6 лет назад

Only nerds like me laugh on the bar joke 😂

@TommoCarroll 6 лет назад

And it's a beautiful thing to accept it and have a little chuckle! Always good to come across a fellow nerd on this platform! How's life Vaibhav, you nerd!?

@ro3062 6 лет назад

Aspect Science since he hasn't replied, I'd like to step in. But life is great. You know, living on that pineal gland potential which gives me nuclear energy for instinctive survivability. I'm sure we all relate. How's your life ?lol

@vaibhavdighe344 6 лет назад

Peter Parker lol you're absolutely right

@vaibhavdighe344 6 лет назад

Aspect Science life is pretty good btw

@TommoCarroll 6 лет назад

Peter Parker, thanks for the reply :) ....was that a remarkably science-orientated explanation of your namesake's spidey sense...?!?!?!?!?

@niknackles8641 6 лет назад

I love hearing neal talk science. It's honestly so calm and relaxing.

@Kremtimi 6 лет назад

Love these kind of videos, thanks!

@michaelkrenciprock7736 6 лет назад

Neil ... run for president! Don't argue, just do it.

@michaelkrenciprock7736 6 лет назад

Paul Ryder ... well someone intelligent needs to take the helm, to make legislation decisions! He is the most down to earth.

@CarFreeSegnitz 6 лет назад

Neil knows his physics, he understands public relations. But he has zero public service experience. No school board. No city government. No state or federal government experience. Not sure he'd want to anyway, as an elected official he'd have to talk about stuff other than space and physics.

@gordonmcdowell 6 лет назад

Opportunity cost. He is effective doing what he does too. Might be less so (but perhaps more so) as a candidate.

@JakisoTheArtist 6 лет назад

Who cares about being first??

@TommoCarroll 6 лет назад

EVERYONE. THIS. IS. RU-vid (read: SPARTA)

@glenralph5123 6 лет назад

Jakiso The Artist : Kids, trolls and people who cling to the smallest things.

@celestialocean9503 6 лет назад

As always, great video!

@eriklogann 6 лет назад

I like this format. Please do more like this

@LetterRedMedia 6 лет назад

We need nuclear power. And alot more of it.

@0ooTheMAXXoo0 5 лет назад

Very expensive to build compared to any other way of generating electricity and you cannot ramp them up or down quickly so you still need energy balancing like with renewables... There is good reason nuclear is not talked about very much anymore, even solar photoelectric generation has been cheaper to build out than nuclear for at least 30 years...

@noiseshapes 6 лет назад

If we want climate action fast, nuclear is the way.

@0ooTheMAXXoo0 5 лет назад

Why? All other forms of electrical power generation are cheaper to build out. Nuclear plants cannot ramp up or down fast enough to balance the grid so they face the same situation as renewables except you have far greater cost to build and cost of fuel and no nuclear power plant has yet included the cost of storing nuclear waste safely for over 10,000 years.