Why Earth has a magnetic field 🧲

On this Short, Neil deGrasse Tyson explains why Earth has a magnetic field. Clipped from our full Explainer, "What Are the Northern Lights?"

[@StarTalk]

Watch the full episode here: kzbin.info/www/bejne/rYmsooaOnrJ2g8k

[@chattywalrus8485]

Why do you need ferromagnetic metals for a dynamo?

[@solidspirit2365]

Love your work/talks/videos etc But Neil...all that is newer/more modern is not Neccessarily better in all ways brother...very silly to see reality that black and white....look at movies for example....I have been watching tonnes of older films...far greater suspense, natural acting, original thinking etc...same as games, aspects of human society etc...why would the same thing not be with the domain of older cultures like the mayan/Egyptians and so on...it may be that we lack the intuitive ability to see what they could, just as they lacked the technical understandings to know what we do. Much Love 🌍

[@Mr.Ubermensch]

I have a question 🧐 cuz I want this to make sense to myself. So I thought when you heated metals like steel once it’s heated to around 1400 degrees lose their ability to stick to a magnet. So is it like quantum unstable magnetism? Please help. Also I have so many questions that I could probably give you a months worth of podcast questions/theories if you ever wanna have me on. I would love to tell you my thoughts on levitation and all kinda of stuff. So just keep that in mind 😅

[@ruellerz]

Pause pause. Tell me what happens to the magnet capability of when iron or other metal gets hot. Take a magnet and put it next to liquid iron, tell me what happens...

[@joeboxter3635]

This sounds good. There is one problem. Heat demagnetize stuff. So if iron is molen hot, it cannot be magnetic and so no dynamo.

[@dodo2829]

Now I'm whole, I've known everything i wanted to know...

[@Enju23]

Don't worry, Neil will never fail to bring new facts every day

[@ramonortiz7462]

You mean everything you INSTANTANEOUSLY believe, memorize and regurgitate!!

[@ramonortiz7462]

@BloggingWorld Are you serious!!? Molten metal i.e. when you melt a magnet it loses all magnetic ATTRACTION and FIELD!! Wake up!! You since KINDERGARTEN have been programmed to INSTANTANEOUSLY believe, memorize and regurgitate everything that scientism tells you!!! Tyson is a priest of scientism i.e. everything hypothetical and THEORETICAL that they beguile you with as fact employing CGI ANIMATION, ARTIST RENDERINGS, CONCEPTIONS, IMPRESSIONS, COMPOSITES and AUGMENTED VIRTUAL reality!!!

[@Enju23]

@BloggingWorld that's something you ask Neil, and he'll explain everything

[@dodo2829]

@BloggingWorld the answer is Energy!

[@hermitfan109]

Always knew Neil was a heavy metal fan 🤘

[@eddierayvanlynch6133]

🤘😎 🤘

[@gamingexpress9249]

🤣nice one

[@annmarieknapp2480]

Actually pretty cool!!

[@GimmeJimmy23]

Wow.

[@maboleth]

Up the Irons!

[@EmpireMG]

It’s crazy that all of this stuff for life here on earth is sooooooo precise that if anything was a hair off it would change the whole earth as we know it.

[@bokononbokomaru8156]

Of course 99.9999999 % of all life that has ever been on Earth is now extinct, most of the planet is hostile to life, and, in actuality, the environment/ Earth's orbit, etc. varies a lot. So, no, there is no fine-tuning. Carbon-based life developed when & where it could and fails to thrive often.

[@ramonortiz7462]

You have no idea do you? If you melt a magnet it loses all of its magnetic field! Tyson is a liar!

[@Justmekpc]

True but with trillions of stars with most having planets rotating around them it was bound to happen Probably quite a few times throughout the universe and who knows how many universes there may be as well.

[@ramonortiz7462]

@@Justmekpc False! What you think is correct is only due to you being systematically programmed to INSTANTANEOUSLY believe, memorize and regurgitate there are TRILLIONS of Stars and multiple universes!! This may help depending on your IQ. kzbin.info/www/bejne/iHjdc3WVaruSpsk

[@spakeface9752]

This is a lie

[@_..____]

I was wondering this for a while. Now it makes sense.

[@cme98]

Yes it does, he even mentions death. Mars was once alive full of life possibilities evolving until... it died. Some scientists theorize the asteroid belt between Mars & Jupiter also Dwas once a planet which mysteriously exploded. Others say its the leftover material planets are made of which never formed. That makes no sense. If Pluto could form, the 113 moons of Jupiter could form (or 32 moons who cares?) fact is much smaller material has formed into moons & do we even have any evidence of another solar system with a asteroid belt? Ive never heard of one being discovered which certainly raises question about how ours Just came to be. One cant exclude the possibility it was a planet & one that exploded by natural causes (highly unlikely) this was during the late first stage of our solar system & earliest fossil records. In other words we had life. With God as plausible a theory as anything thats so-called scientific. I remind people the formation of our solar system was explained to me in text books that sounded as rediculous then as it has been so disproved today. Yet the hubble telescope sent the first image of a new star & birth of a solar system. As logical as that first photograph proved beyond a doubt science was wrong, that image was the only real logical explanation. It should have ended pseudo science right then & there. We all know the sun is first formed as it spirals. Gasses fall behind in this spin where larger particles bump into small particles which eventually form larger ball shapes and they run into each other & do this over & over, until planets & their satellights form. Our moon is created from our own debris field. But back then science said it was once a part of Earth where the Pacific Ocean is at & that it blew violently outwards with several wrong answers explaining that lie as well. Plate Techtonics were considered a wild fictional tale science refused as well. Or the Missoula Floods which formed the scablands of Eastern Washington , the state not the city. No scabs live in DC, lol. The point i am making is SCIENCE & Scientists of those most successful and highly rated make up what we teach our children & without solid evidence we depend upon theory. When it comes to our solar system & outer space in general we have been WRONG. Not by a little, but earthshattering wrong which tirned science upsode sown. It was like nobody had common sense. Nobody thought logical. They came up with gigantic explanations because our creation was a gigantic. I remind you. There are more planets in the universe than ants on Earth. There are planets larger in size which makes Jupiter practically a molecule. We were wrong about everything. So what reason do i have to believe the old theory of the asteroid belt should be one of the last of the wrong theories still needs to be proved or disproved. One thing the record shows, science was never correct until they built an eye that could see. They had no vision to see. Scientists called the Bible a lie but our formation was more accurate in the Bible than science was. Man was created out of sand. We know the first creatures on land formed as algae along the sands formed by the sea. Tides allowed sun to heat the water & bacteria formed. Life. Land life came from sand. Who said that first? Man or the Bible? Eve was formed by Adams rib. Eve is part of Adam but Adam was unique created different than Eve, but the Bible reminds us Eve came from part of Adam. Hasn't science proven all Men have 5 x & 5 Y chromosomes? And that women have only 10 X chromosomes. They make up what our DNA IS CAPABLE OF. Women are all X & carry no Y chromosomes. But men carry an equal amount of x & y. Science proved what the Bible described well over 2,000 years ago. So far back we have no record how anybody knew women were a part of man containing part of man but not all of man. Isn't that mind boggling to say the least? It took science to prove the Bible correct but you have never heard scientists admit they proved the Bible correct. Some will argue, the Bible discusses Adams rib, not DNA or chromosones. These people forget. DNA wasn't probed until the 1950s. It wasn't even taught in high schools until the 1970s. How are they going to teach DNA 2,000 years ago, or 7,000 years ago? You teach them in ways they have the mental capacity to visualize and see. How are you going to teach DNA to someone who cant count past 10 fingers & 10 toes? You can't until you create a way for them to think it out in their head. If too difficult you build the first tools to aid in math. Even then explaining DNA is to describe living things inside us we can not see or control. People today understand but thousands of jyears ago that would create fear. People would itch and think a village of incisible creatures are on their skin & literally scratch themselves to death from paranoia. Mental illness is easier to create from nothing than people realize. If government knows more about UFOs i assure you, the human race can't accept the answer. Society would self destruct if we knew the truth. Be careful seeking the truth because sometimes whats real has destroyed your lifetime work which made you highly successful & wealthy. But you died a joke written out of history because you were dead wrong. A lie. Your whole life spent reading lies, teaching lies, make no mistake your brains inability to accept defeat. The brains purpose is to protect your body. The body protects your brain. If peoples world of reality has turned totally upside down, the brain will go into shock, even comatose, until it finds logic and will to survive by making sense of its entire existence was never real. If it cant it will awaken insane. If you want to help your fellow primate who appears more BigFoot than Ape. You dont dump too much information on them & drive them insane. You dumb down, baby talk to them in primitive ways that teach them, because education begins as a baby step. Anyways i believe science has already proved the asteroid belt was a former planet by theorizing otherwise. I imagine after they find DNA in an old rock they will finally come around? The fact is at least they admit they are wrong. Unlike so called creationists who teach science based on fiction not fact.

[@spakeface9752]

That's a whopper

[@_..____]

@@spakeface9752 w0ot w0ot!

[@johnsutcliffe7616]

@@spakeface9752 à

[@UnTamedMustang]

Liquid nitrogen makes magnets stromger though ?

[@gbenchalice]

Something I'm not clear on ; when we forge steel, you can tell its reached forging temp when it loses its magnetic properties, I'm guessing that pressure in the mantle and core changes the conditions, but I'm sure you have a better explanation (hint hint )

[@ramonortiz7462]

No. When at melt there is no magnetic property at all!! Melt a magnet and see!! These liars want you to INSTANTANEOUSLY believe, memorize and regurgitate everything that scientism tells you!!

[@spakeface9752]

He's a liar

[@A_J502]

Melting temperature increases as pressure increases. The inner core is solid due to pressure. The core becomes less dense and less solid the further from the center.

[@tatie7604]

Ok.

[@tatie7604]

Ugggh

[@michaelgillis7734]

If it's molten metal, would it not lose its magmatism?? Magnets cease to work when heated

[@A_J502]

The inner core is solid and gradually becomes less solid moving outward from the center.

[@MackPaddy]

EXACTLY !!! A piece of iron ordinarily will be attracted to a magnet, but when you heat the iron to a high enough temperature (called the Curie point), it loses its ability to be magnetized. Heat energy scrambles the iron atoms so they can't line up and create a magnetic field. NDT is wrong.

[@georgeclark8382]

I thought the outer core was liquid and the inner core was solid

[@Lordcharquad]

Works a little different on a large scale

[@niox1920]

Y'all he's talking about MOVING MOLTEN METAL, NOT HEATED SOLID METAL. THE SPINNING CREATES THE MAGNETIC FIELD

[@ManyHeavens42]

And this magnetic field keeps us all in Touch Shocking🎉

[@NatureBeeLove]

I love Star Talk! The topics are fascinating, Neil is a wonderful educator, and Chuck’s laugh is infectious. Keep posting. 💚

[@-8_8-]

Ok, so how do we stop this dynamo? Asking for a friend. An...evil friend.

[@dron1895]

😂

[@prashantnegi007]

another dynamo.

[@salimahmedali9249]

Give it time...loads of it...it'll cool and the dynamo is kaput

[@clivebriesemeister3042]

@@salimahmedali9249 nein nein nein

[@f12pushthekeys]

Drill through the Mariana trench and flood the core with ocean water

[@lisear2926]

Can somebody please hand this information over to grade school teachers for dissemination with their students please.

[@ramonortiz7462]

You are the QUINTESSENTIAL IDIOT asking for more PROPAGANDA to be taught in schools!!

[@spakeface9752]

He literally lied

[@lisear2926]

@@spakeface9752 Oh nooo😧. See - your teacher didn't get this information and now look what we're stuck with.

[@spakeface9752]

@@lisear2926 what are you gibbering about

[@WestcoastWatchman]

Puking a bucket... that's what this is.. You have to understand he's paid to be a mainstream troll. If you read what Newton said you would know gravity isn't a real thing... Remember the popular people in the world preach lies

[@anothermouth7077]

Is magnetism different than gravity? Are we attached to earth bc of the magnetism or gravity 🤔

[@whiterunguard1434]

Magnetism and Gravity are the same like how Water and Ice are the same. They are different modalities of the same thing

[@jordivilaioliveras]

@@whiterunguard1434 Not really. Magnetism is a flow of electrons that affect only iron-like metals while gravity is a kind of distortion of the fabric of space-time due to the "weight" of massive objects, like planets or stars but that acts too at small scale (but it's hard to notice). There are two different things.

[@jordivilaioliveras]

We're "falling" to the center of the Earth due to gravity, not by magnetism. The gravity is "generated" by the mass of the whole planet Earth. Hope it helps.

[@whiterunguard1434]

@@jordivilaioliveras Magnetsm and Gravity are one in the same. We aren't "falling" what are you on about lol

[@coriscotupi]

@@whiterunguard1434 *"Magnetsm and Gravity are one in the same"* Nope. Try to attract a block of concrete with even the most powerful magnet. You'll find it won't work. Now drop that block of concrete from the top of a building. Gravity, and not magnetism, will attract the concrete.

[@badscaper]

Sir I don't understand why molten iron doesn't looses it's magnetic properties. While we know heating magnetic substance destroys it's magnetic properties.

[@LBCB94025]

And the moons movement constantly pulls on the earths crust (unevenly*) Causing tital friction which adds heat to the core** The churning causes magnetism cause of radioactive decay and moving iron!!

[@wilhelmhetrick8948]

So does that mean eventually Earth will cool enough that we won't have a liquid core and won't have a magnetic field?

[@myguykaikai9215]

Obviously

[@willowspov]

@@myguykaikai9215 😭😭

[@eliyarrows2456]

Kinda not tho. It’ll take 90 billion years for that to happen and the sun will die first.

[@goldenegg1063]

Molten metal loses all magnetism . So this is bs

[@isacflorea6688]

@@goldenegg1063​​⁠​⁠​⁠ don’t think of the molten metal as the magnet that causes the magnetic field, I think about it from an electrical perspective. In order for a magnetic field to exist, due to electricity, there must exist a charged particle in motion. I wonder if the charged core particles can be a cation or anion which exists at the atomic and molecular level. I’m used to working with subatomic particles like electrons as the charged particle that are in motion to create the magnetic field. In other words, an oscillating current exists in the molten core of our planet that generates the magnetic field. There is not just one thing, like an everyday fridge magnet, that has a magnetic field. Don’t say something isn’t because your superficial knowledge of this topic. I’m thinking there is at least one video on here that will give you a better visual of what I explained. Look up a video on the dynamo to get a visual representation of what I said. Happy searching!

[@dreamer4ever320]

Cool! At 61, learning is FUN!!!!

[@johnterry6541]

In other words, earth is alive through and through.

[@staycurious3954]

I feel properly enlightened now about this subject and can now hold my head higher as I strut up to the dishwashing machine ❤🎉

[@xXxWhiskeytangoxXx]

Our blood system has moving metals..I'm dynamo!

[@andyjackson3663]

And this is the reason life exists on this planet.

[@larrycurtis2791]

Just like an electric motor the moon is the brush and ocean is the coolant. It produces? Life. Great short take Neil sun is the electro motive force?

[@zedmeinhardt3404]

Wait...huh?

[@bibibrin5035]

I could listen to NDT for hours.

[@TheWalkingRed]

He can talk for hours so he got you covered

[@Bruh-mr1nt]

​​@@TheWalkingRed try not to be a sheep and hate ndt challenge (you already failed)

[@TheWalkingRed]

@Bruh My feelings for him were never stated. Go away

[@Bruh-mr1nt]

@@TheWalkingRed yes maam im sorry

[@TheWalkingRed]

@@Bruh-mr1nt You better be

[@juan_valdez117]

I didn’t know the core of Mara cooled down.

[@marehemudanielarapmoi6424]

The Maasai Mara? Still pretty hot.

[@eddierayvanlynch6133]

NDT: Metalcore is Life 🤘😎🤘

[@kalijasin]

Best explanation.

[@ramonortiz7462]

When is last time you had an independent thought? This is FLAT earth damage control!!

[@SuperFishSlayer15]

A challenge for future generations will be maintaining this

[@charllectric4842]

Yeah, WOW is the right thing to say.

[@ScienceBusted]

How do magnets work? The magnet consists of concentric clockwise and counterclockwise dipole rings that extend from one pole to the other over the entire body of the magnet. Dipole rings in the same direction attract each other, and dipole rings in opposite directions repel each other. Likewise, currents in the same direction attract each other and currents in opposite directions repel each other. An electric current can induce dipoles in a magnetic material to form dipole rings. Moving magnets can induce electrons in a conductor to produce an electric current. Since a dipole ring has two magnetic poles, clockwise and counterclockwise, there cannot be a single magnetic pole.

[@jeffreysokal7264]

I wonder why Neil isn't the US Secretary of Education. He should be!

[@entertainmentjunkies9926]

Absolutely! But I don’t know if he want it- I think he doesn’t want to spend his time on paper work.

[@ramonortiz7462]

Do you have a poster of him in your parent's basement?? The earth is not a giant spinning spherical water world space ball spinning faster than a BULLET at the EQUATOR SPEEDING through an INFINITE and EXPANDING VACUUM UNIVERSE BILLIONS of LIGHTYEARS ACROSS!!

[@abcdefgh-db1to]

@@ramonortiz7462 what is the Earth then ?

[@wesleywashington1251]

@@abcdefgh-db1to Don't get upset when I tell you this, but he's a flat-earther. Be sure not to argue with him. He's a fool that can waste a great deal of your time. It's not your job to educate flat-earthers!!

[@TOTGJ]

I really appreciate the theory 😌 thanks, Neil! Now prove it!

[@okerarobinson7498]

in science, if something has become a theory, that means it has already been proven and has survived the scrutiny of the scientific method. things that have not been proven to that degree are called hypotheses. A science THEORY is an explanation of a natural phenomenon that has already been tested in peer review and has not been falsified. So try to become science literate before challenging a scientist. take your time. read. study. then come back and have a sensible discussion where you can be taken seriously.

[@KendallHall]

Could we drill into Mars and set off some nukes at a tangent to the core to get it spinning again?

[@willowspov]

There's a movie about this "the core" it released in 2003

[@spakeface9752]

Earth doesnt move bud

[@wesleywashington1251]

@@spakeface9752 Don't you have a fellow flat-earther to talk to instead of bothering us? Or do you just want to argue? Go away

[@russmoore1036]

Dynamp hum, dynamo hum, where's this dynamo coming from

[@russmoore1036]

As Frank Zappa said

[@kfor247]

And how does the Curie temperature effects this?

[@spakeface9752]

It alone debunks the cores molten magnetism

[@abcdefgh-db1to]

The explanation Neil gives is incomplete, it is not because iron is ferromagnatic but it is because iron conducts electricity. It is an ongoing research topic but there have been experiments using a big spinning spherical tank full of molten sodium that show that it produces magnetic field. The physics is quite complicated and we don't have all the answers yet

[@A_J502]

@@spakeface9752 The inner core is solid.

[@MackPaddy]

A piece of iron ordinarily will be attracted to a magnet, but when you heat the iron to a high enough temperature (called the Curie point), it loses its ability to be magnetized. Heat energy scrambles the iron atoms so they can't line up and create a magnetic field

[@MackPaddy]

@@abcdefgh-db1to Also interesting effects of moving bodies of mercury creating strange fields and such. I am not a scientist, and my memory sucks. LOL sorry. But read something about it the other day, and that was the part that stuck

[@giannimortela7887]

I've been watching Neil DeGrasse Tyson clips for over an hour now. I went from 120 IQ to 130 IQ.

[@johndowe7003]

I read your comment and dropped a few points

[@coisasnatv]

Can you explain why the Earth is speeding up and why the magnetosphere is shifting so fast?

[@gringoenespanol]

What can disrupt the magnetic field apart from the molten liquid core turning solid?

[@NorvelCooksey]

What a great government actor this guy is.

[@georgelux126]

It’s important for humanity to stamp out as much ignorance as possible. Keep watching his videos please.

[@brianfaria]

@@georgelux126 Marie Curie won a Nobel prize and proved that Earth cannot have a molten iron core. It’s called the Curie effect. NDT is a liar and a fraud. And yes he’s a government spokesperson so your paying his salary.

[@charlestredway8253]

And yet we haven’t learned how to utilize magnetism for free power.

[@zekekillah]

I asked this to some one and they explained it in a way that basically means you cannot. It's against law of physics on the one states you cannot create energy. Everything we use is like burning or combusting some type of material to create energy. Magnetism is energy it self, it cannot be used to make even more new energy from nothing. Something like that.

[@charlestredway8253]

We can design our transportation devices to utilize this magnetic energy.

[@zekekillah]

@@charlestredway8253 We utilize fuel sources. You convert lets say "oil", which in that state is not energy. It has "potential" energy it can become from combusting it. We utilize the combustion of that energy to move things. Magnetism is like saying , "let's convert that fire into fuel". You can't do it. You need to harness the and use the thing that causes magnetism. Until it runs out of magnetism, meaning you used all its potential energy. you wouldn't want to do this to the planet. It protects us from solar radiation. This video is saying, you need to move heavy metals to create that magnetism. Meaning how do you move it? You need energy to move it. Mars stopped, and now its dead. We want to avoid causing that to earth sooner

[@myguykaikai9215]

@@zekekillah you’re forgetting about renewable sources of energy (hydro, wind solar, tidal, geothermal). None of those sources burns a fuel to create electricity.

[@nickschurko4809]

we do use magnetic fields in hydroelectric power generating stations. it is a large fraction of electricity generated without burning any fuel!

[@stephanieburgess5190]

Very interesting 🤔🤔🤔

[@michaelovrutsky5927]

Good explanation! Thank you!

[@paulacurtis9473]

I just finished the movie " don't look up" we don't realize how blind and silly we are as a group of beings until I viewed this movie. We are truly the idiots of the cosmos.

[@eliyarrows2456]

Don’t worry, our society seems dead set on ditching science so itll only get worse for future generations

[@artybone6946]

That's fricken wild!

[@ramonortiz7462]

You are the truest definition of artificial intelligence!!

[@artybone6946]

@@ramonortiz7462 lol

[@ramonortiz7462]

@@artybone6946 Google and wikipedia admit that GRAVITY is FAKE/INTANGIBLE!! Tyson is traitor to humanity! kzbin.infoRGzBB_5V_pg?feature=share

[@tonyalbrecht7169]

wow I've always wondered that, thanks.

[@derekapolloalambatin8136]

ohw, never thought of that. Thanks

[@mball5764]

Thanks for keeping it simple.

[@Robert_A_Keyboards4948]

Fascinating

[@danielhill3665]

Now I gotta go look up this whole theory of gravity thing.!!🕵🕵

[@miketobias1821]

You learn something new everyday. 👏👏👏👏

[@sharknadofartquake2449]

How long you remebmer those things though :P

[@AriessunvirgomoonlightLibraise]

All science teacher at the same 😆

[@cristianlescano4427]

I end up here after seeing a clip stating that scientists hage confirmed that we have a 650km solid iron core.

[@FluffytheChicken3]

So if mars is dead and was in the past filled with motlen iron, how much solid iron is inside of mars? Is this able to extracted for mining purposes?

[@sheromanysooklal775]

Very Amazing Stories.

[@michaelallen2358]

NDT you are the ONE, thank you for getting us back to what's really important and you do it every day You deserve a Metal! Don't worry about the haters,there name says it All.

[@phillyexclusive]

I've been explaining this to many people. Earth not only has a magnetic field which protects us from heavy radiation. It spins on an axis, which gives us day & night. Some other exoplanets do or have neither. Which make them inhabitable.

[@morganshusband5030]

I have a question if we continue to use material from earth.does that affect the mass or does that material ever really completaly dissipate

[@orogenicman]

The outer core is fluid. The inner core, and the inner-inner core are both solid.

[@Za7a7aZ]

so the most heavy metals go to the centre...like all the gold?

[@Richard-cq4kv]

If Mars is frozen to it's core, could we bore all the way to its center, and build an ore processing factory?

[@gordonquigg9389]

This is fascinating.

[@jkush1366]

People in the comments being sarcastic but that’s 100% true. The magnetic variation is even shown on certain scale maps and nautical charts.

[@LexaProGamerr]

What I find so interesting about this as a whole, is that the Earth has been around for so long and it’s still in the process of cooling down since its creation. The outside has cooled just right so that we can live on top of the molten stuff underneath. With all that said, as the Earth continues to cool, I assume we are destined to lose our magnetic field as well as time passes…

[@zachmoyer1849]

the sun will blow up and engulf us before that happens

[@LexaProGamerr]

@@zachmoyer1849 even more interesting…

[@aclark7500]

Earth is an organism. Its a living entity.

[@PickledPixiePie]

Yup. Just as you and I are comprised of individual cells, us living things comprise the organism that is the planet, which is just a particle in the construct that is our Universe, which could very well simply be a particle in some much larger thing up the scale.

[@aclark7500]

@@PickledPixiePie you miss the point I make. Our planet should be treated like it is the most precious living organism we own.

[@ronaldsherman6942]

That's why they say Mars used to have life.

[@casandramccoy-langley5873]

We also use gravitational pull and magnetism together in other elements within the pyramids in order to use the pyramids as power centers to open up portals or dimensions. I dreamed this stuff and my dreams Never Lie unless I only dream it once

[@robertberry9307]

Neil is such an amazing guy and his info is priceless 👏👏👏

[@AustiuNoMatterWho]

It takes the best to explain it to the worst

[@Arbidarb]

"Wow" like they didn't teach this in middle school science.

[@TheTruth1sPower]

Plot twist. The universe is an electromagnetic field. And is the only force in creation. Sound and electricity being bi products of it.

[@evanferrero]

can we reverse polarity accidently, and what are the implications of that ?

[@peterv7258]

How is it then that high heat can demagnetize a magnet?

[@billywayne902]

Neal is a Hollywood actor.

[@thesilverlucario5795]

I have a question is the water and rock geanting a true perfect seal of presure drom all side helping to keep it hot and the water even under insane pressure and the water cools itself faster than it heats

[@davedaniels4967]

Neil, I told myself the answer before I watched the video. And I have been paying attention in class. I said the core has something to do with it. Yes!!

[@ramonortiz7462]

You have been systematically dumbed down to INSTANTANEOUSLY believe, memorize and regurgitate everything that scientism tells you!! It isn't learning but programming!!

[@peaceofcake6833]

@@ramonortiz7462 yeah its just a theory that the Earth's core made the gravitational field

[@ramonortiz7462]

@@peaceofcake6833 Really? So you refuse to understand the difference between science and scientism!? Everything Tyson states is theory that they teach as fact when it is not fact nor even a good theory!! Here,,, google admits it. kzbin.infoRGzBB_5V_pg?feature=share

[@A_J502]

@@peaceofcake6833 Scientific theories are much more substantial than just some idea.

[@amac9044]

"And the lighr stuff, which is the ROCKCKCKS!!..."

[@beenay18]

If metal in the core of earth wasn't molten, Would there still be magnetic field? The solid metal core will still spin with earth's rotation? Or is it that the magnetic field will still exist without earth's rotating motion, just because its core is molten metal?

[@scott5609]

Would there be alot of hold in the middle of the earth

[@tushkirokz]

When he started with “we have a fluid core…” I thought he was talking about humans :O

[@MetalSStar196]

It turns out that Mars has a molten core, though its core is smaller relative to its size compared to Earth's core ratio, which could explain its weaker magnetic field compared to our planet's own. Same holds true with our own moon, Luna, which also boasts a molten layer. Equally fascinating is the fact that lunar quakes do happen. Though, what's uncertain is when the next volcanic eruption will occur on the lunar surface.

[@HigherPlanes]

Good theory, very good theory.

[@joesimamura223]

that wow from lord chuk made my day

[@edward4245]

We are never spinning everything else revolves around us.

[@Otnaifla]

When I was in elementary school, I confused between gravity, magnetic force, and static electricity

[@rondesantis7017]

As long as we spin at 1000 miles per hour. Our atmosphere is protected. It's all about our spin, baby 🐥

[@shiznitts]

Ask Neil about Magnetic Monopole PLEASE

[@Marcio100s]

The statement is incorrect. Iron can be magnetized, not electrically charged. However, iron cannot be magnetized at temperatures above 770 degrees Celsius and, inside the Planet, temperatures are close to 5000 degrees Celsius. The geodynamo situation is not sustainable and cannot explain the origin of the magnetism of the Planets.

[@dakotaachord5626]

So how would life on Mars, with no magnetic field, differ from here on earth?

[@zedmeinhardt3404]

Way more radiation, and the atmosphere has been stripped away. To terraform (make it livable) we would have to generate a magnetic field to shield Mars from the sun. This is to the best of my knowledge, and I may be missing several key points.

[@coreygossman6243]

Can this be recreated in an experiment with molten iron? I heat treat blades by baking them until a magnet doesn't work on them. Cold iron is magnetic. Warm iron is not.

[@A_J502]

The innermost part of the core is solid due to pressure.

[@coreygossman6243]

@@A_J502 The problem isn't the molten part. Iron over a certain temp loses its magnetism.

[@A_J502]

@@coreygossman6243 That depends on the temperature and pressure of the iron.

[@johnpaulmcdonagh2190]

They should show this as a picture of earth but a side picture explaining it

[@dee6965]

Tyson needs his own TV show!

[@jadibegini1571]

Pretty sure he has it. It was called cosmos

[@etherico3041]

Someone forgot how Currie temperatures and magnetism work

[@theodoreneuner4843]

So is gravity caused by mass, magnetic field, or both?

[@docdirtymrclean3610]

Yes.

[@busandcoach]

When will it solidify

[@sharknadofartquake2449]

A long time or never if the sun expands and destroys earth WITH FIRE! :P

[@Mango_Eter]

But the inner core is solid tho...

[@camphope9344]

It’s safe to say that mars will never see a volcanic eruption in its lifetime

[@BigDaddy-vr2ut]

My science teacher taught me earth core was molten lava. Now they are said it’s solid . Just to let you know. They don’t have a clue of what’s in the middle of this earth. They never have and never will have a clue. Just like they never got out of lower earth’s orbit before and never will. On the account of the dome of water above and below us. They call it the firmament

[@moonrabbit2334]

you rock bro

[@nouse700]

Can you make a moving spinning Dead Planet have a magnetic field again by creating a molten core at the poles in the the planets Center of gravity like on Earth

[@thefpvlife7785]

I heard of the word dynamo, but that pertained to my 1980s BMX bike

[@Phoenixspin]

We need to come together and make a molten iron core for Mars.

[@JamesBond-lk5mr]

Chuck Nice? Sorry if I misspelled