Kip Thorne - Why Black Holes Are Astonishing

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Black holes warp space and time, squeeze matter to a vanishing point, and trap light so that it cannot escape. Black holes, with masses millions or billions times that of our sun, sit at the center of galaxies. How can black holes perform such stupendous tricks, and what can we learn from them?
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[@npm1811]

Kip’s “aeeeeeh” happens when a black hole tries to swallow his words because he’s exposing them

[@si_monster7365]

Hahahaha

[@davevandersmit4896]

God almighty; this is the best six minutes I’ve spend in a long time. Good gracious it feels good to know this! Now I’ve got something worth pondering on my drive to and from work.

[@waizwaidarenosa9032]

Kip Thorne is one of the few scientists who can bring these amazing concepts down to my level so I can understand them. He is so beautiful to listen to. Unfortunately, the videos are too short.

[@johnnyd7507]

I like Dr Kaku but Kip explained this better than anyone. It’s comprehensible now

[@steviejd5803]

Surly the single most beautiful explanation of black hole science for us mere mortals. Kip is an incredible teacher. I can listen to this man all day, and what’s more, I understand what he’s saying.

[@packratswhatif.3990]

The universe is truly amazing, and we can only see and understand to the limits of our minds.

[@TheAmazinTacoChannel]

There are very few times where I'll say something blew my mind because I think that phrase is an overused meme, but honestly ... this blew. My. Freaking. MIND! :D I didn't know a black hole was basically just made up of warped spacetime. The more you know.

[@fun2badult]

Technically it was made up of matter initially, notably as a form of supernova (massive star that exploded and died). This in turn created a huge gravitational field, which brings space time and matter into a single spot called singularity. As the blackhole is being fed by a nearby star, the gravitational field gets stronger and the size of the blackhole grows. It destroys the mass and converts it into energy, which is the energy of warping spacetime

[@AndromedaImagination77]

+Astro Physics that is a great explanation, thank you! My question is, if I understand correctly, the black hole has a strong gravitational pull, therefore it really never stops feeding from anything that is near, and since its pulling things near itself, then wouldn't they grow insanely big, basically eating everything after a long time?

[@TheAmazinTacoChannel]

Andromeda The Sun has a strong gravitational pull as well but it doesn't "eat" anything. Gravity for a black hole works kind of the same. As you get nearer, your angular momentum increases, roughly balancing out the gravitational pull. That's why you can have an orbit around the Sun and a black hole, theoretically. Unless you have a path that converges with the black hole or is close enough that you'd lose some angular momentum, you won't get 'sucked' in.

[@TheTails63]

So where does the matter that falls in goes?

[@florin604]

It falls into space-time, it goes into an atemporal state

[@2serveand2protect]

This guy is AWESOME! I could listen to him for HOURS and not get bored for a second.

[@dapdizzy]

I’ve watched numerous videos on the topic and this is probably one on the most brilliant and dense explanations of the concept without involving false approximations like dense matter etc. Brilliant!

[@johnnyd7507]

This is the first description of black holes I’ve heard that says they do not contain matter. Suddenly all the other related phenomena of warping space and time, what happens beyond the event horizon, etc makes more sense. It’s one thing to know the equations but now to have it all comprehensible, well it’s just cool

[@phillynott2459]

What does "to and fro" mean? I keep going back and forth on what it might mean, but I'm not sure

[@MAMP]

Lol!!!

[@robertschlesinger1342]

Excellent video interview with Kip Thorne, a leading expert with a deep understanding of the topics discussed.

[@arturpopielski7051]

This is by far the best explanation of this topic. Kip is one of the GOATS

[@paologalliani4172]

yes Hawking Penrose Kip Thorne are the Federer Djokovic Nadal of physics!

[@beenjamming]

if the matter is converted into warped spacetime, what is maintaining the persistent warping of the spacetime?

[@innertubez]

That is a great question. My first thought upon hearing Thorne's description was that a black hole is sort of like a "scar" in spacetime, but perhaps it is more like a bottle or an ice tray. The collapse of the matter that causes the black hole does so in such a way that the spacetime within its volume gets "frozen" into place at least since it can no longer spring back and release energy to the rest of the universe. Almost as if that bowling bowl on the trampoline vanished but the deep dent in the trampoline remained. Or maybe like a battery that can keep getting charged but can't be used (since black holes can keep growing). But I know that doesn't really answer the question of why spacetime would get stuck or frozen that way versus always being able to "unwarp" by using the same energy. From what I learned, that reason is because the instant the escape velocity of the collapsing matter exceeds the speed of light, there is no force that can undo the warping. So whatever is going on to maintain the persistent warping of spacetime is irreversible as far as we know.

[@413PDS]

Innertubez, I would like to correct and expand on your explanation of black holes. You mentioned matter exceeding the escape velocity of light. That is actually not possible, black holes are black because the process of a star going supernova responsible for creating the warping of spacetime, is what give the black hole it's gravitational property of having an escape velocity that exceeds the speed of light. Light travels through the gravity well of a black hole but never reflects, which is why they are black. I'm not a theoretical physicist, but I have paid close attention to documentaries, books, and lectures over the years on the Universe and the strange wonders that exist within it. If you want to know how strange black holes are, when scientific theories predicted their existence, nobody believed such an object could exist. White dwarfs and neutron stars were well excepted, but black holes were deemed to be far fetched. Black holes are a 20th century discovery. They've existed for billions of years and we have just recently discovered them.

[@rossstotz775]

@@innertubez Maybe space time only has so much elasticity and is unable to "snap back" after a singularity has formed and then been destroyed. I also wonder if we have the concept of gravity backwards where, instead of being a pulling force exerted by mass, it is instead a pushing force exerted by space in response to the presence of mass.

[@jdimmler]

Gravity from the singularity.

[@patinho5589]

The energy has been added to warp it. It would stay warped until energy is taken out again. Surely.

[@PeeedaPan]

its crazy to think about something with 10 billion times the mass of the Sun

[@blackraven4842]

especially when it isn't made of matter, like he pointed out.

[@haroldwhitney6130]

Regarding his description of a black hole, I simply don't believe that there is no matter in the black hole... I also don't believe that there is a singularity at it's center... There is no way that I can refute what he's stated, but the same holds true for what I've stated. Our understanding of what's happening within the black hole is limited to our untestable theories.

[@hdavies0]

obscenely frightening and at the same time gloriously fascinating

[@alexpearson8481]

Really good explanation; but.......If no mass is inside, what prevents space time from snapping back into its proper (non warped) place? Wasn’t it explain to us that mass tells space time how to Curve? So how can you have a curvature in the absence of mass? Anyone, please feel free to comment....(intelligently mind you)

[@hwoods01]

Interviewer: Kip, describe the structure of black holes. Kip: aeeeeeiiggh

[@Brandon-vy6uw]

What a great explanation on something do hard to wrap your head around. Makes sense now lmao

[@justinhhhfan]

So curious, how do we know that it's not a "more dense Neutron star" type of object and instead assume it is zero volume? Logic and math would seem more likely it is a sphere of very dense matter instead of a singularity right? Obviously I'm wrong here, but want to understand why. The zero size singularity divide by zero idea just sounds wrong to me.

[@Guy-em4ck]

The universe is beautiful. Something like a new woman that I was gonna date. You’re dark and you’re massive and you have a black hole and all of those element I want to explore just like you would explore on a new date. You want to dive deep into them and feel around and just see what’s gonna come out of that

[@alextanner115]

Haha but dont forget the danger of losing yourself in there

[@laurenth7187]

Warping of space and time is a meaningless sentence. This is absolutely no the way Einstein spoke.

[@steviejd5803]

I’ve come back to this fabulous explanation of black hole science. Kip is a masterful teacher.

[@robotaholic]

omg he explained it so perfectly - I finally get it a little better

[@tnekkc]

Kip Thorne was a big deal 20 years ago with his book on gravity. He never seems to be in the news, yet he got a Nobel prize in 2019.

[@martindizoniii2230]

Umm he was one of the 3 men who worked for 30 years and developed LIGO and the technology to measure ripples in Space Time. Once thought to be impossible, due to the incredibly small distances needed to get data. We are taking 10²¹, that's 10, with 21 zeros after it. On the very first day they turned it on, they captured the space ripple from the collision of two Black Holes 1.3 million light years away

[@rapid13]

You know he basically wrote _Interstellar,_ right?

[@Boogieplex]

This is probably the best explanation of a black hole on KZbin.

[@SF-jr1rt]

One thing I can’t seem to wrap my head around is the black hole warping space in all 3 dimensions the trampoline analogy only describes a 3 dimensional stone warping a 2 dimensional sheet:(??

[@MAMP]

I have the same problem. The trampoline is easy to picture but I guess the black hole is warping in something shaped like the opposite of a sphere I don’t know!!!

[@uneedtherapy42]

black holes and that space between your car driver seat and the console where stuff falls into are 2 places nothing will ever escape

[@euginrobinson]

Haha you said it buddy

[@drstrangelove09]

If the matter in the star is destroyed in creating the black hole then what is it that maintains the warped spacetime?

[@Alex-bw6yd]

Try to think of it this way, when you have a fabric and place a weighted object on it, the fabric stretches downward/inward. The fabric conforms to the weight of the object placed upon it, stretching it further depending on the weight. If the object is extremely heavy and the fabric can hold it without breaking, it sags deeply. So imagine you set a baseball on said fabric, most likely it would sag a little bit but it wouldn't be extreme. You roll a marble across the fabric, and because it is sagging a bit from the weight of the baseball the marbles path moves from a straight line across the fabric to a curved line around the baseball, eventually falling inward and against the baseball after spiraling around it a few times. Now, imagine replacing that baseball with an equal sized, incredibly dense ball of steel or led. This ball sags the fabric way more than the baseball would. Maybe the fabric sags all the way to the ground, the fabric is now sagging to a point where you can no longer see the dense ball of led/steel all you see is a hole. What happens if you roll the marble now? Well because the fabric has sagged to such an extreme degree, that curve in the fabric around the object becomes a path leading downwards or inwards. You roll the marble and instead of just gently curving around it drops straight down the hole and falls inward towards the ball. The object never disappears it just sags so deeply that you can no longer see it. This is a simple way to conceptualize how a black hole works, only it is spherical (a 3 dimensional hole) meaning that you fall straight down(or inwards) no matter where you enter it. So the matter itself is what maintains the warping of space-time. Just like our led/steel ball maintains the sag in the fabric until it is removed.

[@drstrangelove09]

Thank you... but: 1. this isn't an answer to my question 2. if you think this truly explains anything the I submit to you that it actually explains othing Sorry...

[@drstrangelove09]

FYI, I asked Dr. Thorne these questions: --- I was watching: kzbin.info/www/bejne/pZuUcpmhhbaUbK8 “Why black holes are astonishing” In the video you stated that all the matter that went into creating the black hole is destroyed and so there is no matter left in the black hole. If the matter of the original star is destroyed in creating the black hole then what is it that maintains the warped spacetime? I’m also curious as to what it is that destroys all the matter? --- Here are his answers: --- destroyed by singularities inside the black hole. The hole holds itself together through nonlinear self interaction. ---

[@avalsirithanawat1772]

that's exactly what I thought for a long time but now that Kip Thorne said that the matter is no longer there, I do not quite get it.

[@AlexOjideagu2]

+Aval Sirithanawat A better word is scrambled. The energy and information of that matter still exists in the black hole on its surface

[@zuyanhe]

Human life span is so short, and that reminds me of the professor brand said in the Interstellar movie:" I am a physicists, I am afraid of time." Scientist today may have the idea of the universe but just the limitation of our technology limits the experiments, the experiment would have to take decades to be done...

[@jbw6823]

Go, Prof. Thorne!

[@Anarcath]

Best explanation of black holes ever!

[@LoneIgadzra]

Never heard anything about matter being "destroyed" in a black hole before, that seems off to me.

[@jeremyelliot4831]

I was wondering why black holes are astonishing - just couldn't figure it out.

[@massimoacerbis8138]

We are still discussing a theory 100 year old And still only partially understood

[@MAMP]

If there’s no matter in the black hole why do we insist on referring to them in terms of solar masses? Why not label them with a unit of energy instead to make Kip’s points more intuitive?

[@ryanrobin12]

Would I still get pulled in, never to return, if I had a harness and a really strong cable attached to me?? I think I could get back out

[@ClayMann]

+ryanrobin12 I think you should give it a go. Livestream it and on the way home, stop off at the moon and get some of its cheese for all of us.

[@NeedsEvidence]

A cable is a collection of atoms and sub-atomic particles held together by electromagnetic and nuclear forces which propagate through space with the speed of light and are responsible for chemical and nuclear bonds. The fact that atoms "stick" together is because they are communicating "force particles" forth and back through the vacuum between them, which in some regards resembles two people, Alice and Bob, communicating with each other using flashlights. Now, if you float one inch above the event horizon of a black hole without you freely falling towards it (important condition), and then you dip a cable through the event horizon, then the atoms that pass through the horizon first won't be able to "communicate" their force back to the atoms that have not yet passed the horizon. Not only that, the atoms that passed first cease to exist (losing any causal connection to the rest of the universe outside the black hole) from the perspective of the atoms that are still outside the horizon. It's not different from Alice being outside the event horizon and Bob falling through it: Bob won't be able to communicate with Alice anymore.

[@TheTails63]

a cable made of antimatter.

[@saturn724]

the harness would need infinite energy to pull you out, which is impossible to achieve

[@AmazingUniverseWithShilpa]

The harness attached to what? To earth? To a space ship? May be the space ship will get pulled in along with the harness. Or broken up or whatever happens in there :) These blackholes can eat up nearby stars. Leave alone your harness :)

[@TheNervousnation]

I bought "Black holes and time warps" 23 years ago at a Barnes n Noble, only after showing up there 100x just to sift thru it like i had a penny. These damn kids don't buy SHIT! Fuck them I also bought some Poe, H.P and um, ....and some Warhammer Guides and Starcraft. so yeah.

[@apmm4209]

A singularity in the centre ! In other words, we don't know!

[@riseandshinemrfriman5925]

I totally forgot about Mr. Thorne's speaking impairment -> "aeeeh" ...and almost choked on my soup from laughter, haha. Jesus, that caught me off guard. :P Bless this wonderful man, though. His wisdom and knowledge are a gift to mankind. :)

[@slo3337]

He is describing the mathematical black hole. A true black hole could be far different. I'm upset that he says there is a singularity. Clearly singularities don't exist.

[@-8l-924]

2014: “We know that at the center of our galaxy, and almost all other large galaxies, there’s a huge black hole.” May 2022: anybody here after the first image of Sagittarius A* came out this morning?

[@damianayre2130]

If there is no mass then where does the gravity come from ?, or does he just mean inside the event horizon and the singularity does have mass. I've always said that the singularity could be tightly compacted quarks, the same way that a Neutron star is with neutrons. If an atom is 99.999% empty space, is it the same with Protons and Neutrons ?, 99.999% empty space ? (approximately) How many Protons/Neutrons in a teaspoon compared to how many quarks in a teaspoon ? If A is the size of an Atom and A=100,000, and P is the size of a Proton, and Q is the size of a Quark, does that mean that P = 1 and Q = 1/100,000 ? How much smaller is a Quark compared to an Atom ? If Quarks are 10 Billion times smaller than an atom would it makes sense that 10 Billion teaspoons of elemental iron, (when broken down into Quarks), would fit into 1 teaspoon ? I read somewhere once that an Electron is actually smaller than a Quark.

[@clarkkent9380]

Aeeeh !!

[@Ephimedius]

Man i was exactly looking for this! Lol. Aiieeh.

[@TheXitone]

well youre both idiots then .Congrats you found each other on you-tube who'd a thunk it ?

[@LameGeneration91]

Eek a Mouse thought*

[@naimulhaq9626]

BH of the size of billion suns is not possible, because suns of the order of 10-20 suns explode into supernova. What probably happened is many BH joined to form a bigger BH

[@bobinmaine1]

To our best current understanding, space time is pliable/malleable. An object with mass will bend/Warp the "fabric" of space time. The more massive the object, the more extreme the warping and hence the gravitational pull. It's why the rubber mat or bed sheet demonstration works. It's not the best analogy but it is "correct". If I place a large Boulder on the trampoline. It will warp the surface area greatly. If I then vaporize the boulder. The surface will rebound. How is space staying curved without the mass remaining at the center of the black hole??? I always thought there was an incredibly small massively dense core. Why do answers always lead to more questions???? 😂😂

[@ollywright]

A fantastically clear explanation of a very deep subject.

[@laurenth7187]

Oh, and there isn't something like warped space. or warped time. This isn't the way EInstein spoke, for example. Before mixing everything together, one should ask one self if a time gradient or vector, isn't sufficient to explain that space isn't the same. For example, why the Sun's gravity is deviating light from a star behind ? We don't steering space, time etc. We know that Time is slower next to mass. Then if time is slower, maybe a line becomes a curve seen from outside. That's all. Space isn't warped, it's different depending on the observer, because of the time gradient.

[@militaryandemergencyservic3286]

I find what he says slightly offensive. This because I weigh the same as 10 billion suns. I do not consider myself fat, however. Just horizontally challenged.

[@Langkowski]

In the late 1970s, black holes were sexy: kzbin.info/www/bejne/gXvNdGyKlNBnoJY What I found most interesting in this video is that none of the energy the black hole is made of is found in the singularity, only around the singularity. If the singularity doesn't have any energy, then what is it, and what is it made of?

[@michaelberg7201]

As you fall towards the event horizon of a black hole, an outside observer will see you slowing down. When you are at the event horizon time, as seen from outside, time will have stopped entirely. As a result, the outside observer will never actually see you fall through the event horizon, but in stead see you "frozen on" the horizon. Similary, as you fall towards the event horizon, if you look away from the black hole you will observe the outside universe and time there will pass quicker and quicker. At the event horizon, time will pass infinitely quick and you will observe the passing of billions of years in milliseconds. So I don't understand why Kip says that once you are inside, you can "look out on the stars". Those stars will be long dead by then.

[@SukmaHema]

love it 👍

[@goodfella7771]

Aiiiiiighhhhhtttttt

[@laurenth7187]

Before speaking about the structure of a black hole, one should explain why they exist, and then why they rotate. Because no one can see them, they are invisible. I have a big objection why a black holes don't exist, because gravity slows down time. Then time almost halts, and the black hole can't be achieved, and even if it exist, it cannot grow because nothing ever falls inside. And last, they can't rotate either.

[@priyabratadash381]

And think although we can define the horizon or perimeter of a blackhole, we can't simply define its diameter at all.... As we really don't know where the geometrical centre of a blackhole lies..

[@maurpine]

BH are theoretical entitities. No observation proves their existence. This seems to be a faith driven enterprise. The 'we know' should be replaced with 'we believe' as any dogmatic system

[@jamesruscheinski8602]

Warping of space and time inside black hole accelerates time towards the center of black hole as space contracts inside black hole?

[@venkatbabu1722]

Why speed of light is a constant. It is something to do with mass ratio of protons to that of electrons. Like the pendulum producing a constant frequency.

[@Obez45]

How is it warping? If Euclidean geometry doesn't apply does that mean that space is warping via a 4th spatial dimension that we can't see just like in the two dimensional example where it was warping through the third dimension and the blind ant couldn't perceive it?

[@fun2badult]

For a Euclidean geometry, a triangle has 180 degrees no matter where you are. However, when warped space time is involved, the triangles don't necessarily have 180 degrees but can have less than 180 or greater than 180 degrees. It also exists within our 3 dimensional world, it's just that we are used to triangles having 180 degrees because that's the world we normally deal with

[@DeathBringer769]

Imagine a hole in a table. That's a 2 dimensional hole. Now imagine a hole in the middle of space, a hole from every direction you approach it.. it would appear to be a 3D hole in space, pure black since light can't escape.

[@Hack3r91]

That's incorrect, you can have a n-dimensional space with an intrinsic curvature different from 0. Flat n-dimensional space can be studied with euclidean geometry, curved space can not. I want to stress that there is no need to embed the n-space in a n+1-space to explain the curvature: it is an intrinsic property of the space itself. You may want to study differential geometry on rienmannian manifolds to grasp the thing better. Spacetime is NOT a rienmannian manifold because the metric is locally lorentzian (thus we call it a lorentzian manifold) but rienmannian manifolds are just fine if you want to get it to the core.

[@venkatbabu1722]

Why do you start explaining things. When there is No recovery for the entire world. Death is a accepted phenomenon of life. Though so many don't realise. When extreme temperatures act they talk philosophy and sometimes yoga and science etc. Why do we need all that. Not a single human can control the sun or a star. Or some of the electronics of satellites which fall. Let alone other aspirations.

[@littlebirdie963]

I watch this when I want anxiety

[@tediekgb]

if there is nothing left of the star and therefore the black hole is made up of nothing what keeps the black hole from closing up? the singularity?

[@MAMP]

That’s the best black hole 🕳 explanation I’ve ever heard

[@WinrichNaujoks]

Well well, today I learned that black holes have no mass. And I always thought that with all those stars falling in there they'd be compressed to a pinpoint.

[@sxaloka]

I know this is an old comment, but black holes DO have mass. What he's saying is that black holes are not made of matter. But they do have mass.

[@LarsRyeJeppesen]

They are spinning faster the more stars fall in

[@BoManton]

Sam A how do we know black holes aren’t made of matter?

[@b.waynepresents2992]

Wait.. Is the circumference larger than the diameter, or the diameter greater than the circumference?

[@arahul4942]

2:21 after knowing my random answers were correct in the math test

[@rvssrkrishna2]

Scientists are trying to describe about black holes with a theory that does not work at its center i.e. singularity. So what is inside a black hole? no one knows about it but see the confidence with which they theorize. So one should remember these are theories no ones knows for sure.

[@jamesruscheinski8602]

If no matter inside black hole, does someone or something passing the horizon become energy?

[@jamieharmer5654]

So does this mean that when the black hole is created ...the mass and energy from the star that gave birth to it is converted into warped space time ?

[@phillynott2459]

I didn't understand just how strange blackholes are until now

[@probegt75]

Is that Jerry Stiller giving the interview?

[@evansclan4eva49]

They in theory clone you as well. Two of ‘you’ are created. That’s a head mess right there.

[@lasselasse5215]

How can we be sure we aren't living in another universe's black hole right now?

[@tashriquekarriem8865]

Kip knows what is at the singularity we're just not on his level yet.

[@Hrothgar98]

If black holes are not comprised of matter, but of warped space and of warped time, then why do so many of these astrophysicists keep saying things like "the black hole at the center of our galaxy has 10 million to a billion solar masses"?

[@adamwatson7669]

Because the black hole still has mass. It has a gravitational pull equivalent to millions of suns, even if it isn't made of the same stuff.

[@samirrimas]

Because according to E=mc^2 mass is the same thing as energy and in a black hole mass is turned into energy which is then used to warp space.

[@Hrothgar98]

Good answer, Sam. I never thought of black holes that way - black holes are mostly mc²...very close to pure energy! Well done! (mass-energy equivalence)

[@adamwatson7669]

Sam Ma Mass is not the same thing as energy, because of the factor c^2. They are proportional, however.

[@Hrothgar98]

Mass and energy are virtually the same thing. They are equivalent. Einstein's equation says that "E *EQUALS* mc²", not "E *IS PROPORTIONAL TO* mc²".

[@continentalgin]

From what all I've heard about them, black holes are scary.

[@mikel4879]

Yeah, BS is sometimes awesome but mostly uninteresting.

[@pacajalbert9018]

Hľadá svetlo to je to samé kde na priklad vo sne podľa sna chcete sa dostať preč z čierne dieri kde na to ne záleží pre to že komunikácia kde koľvek v čierne diery alebo vo tme

[@ukidding]

so if i look at my watch after passing the horizon, time will stand still?

[@pacajalbert9018]

ne vedome vo spánku som spadol do čierne diery kde som vyšiel na mali piesok kde som bol ten sami mali chlapec 🧒 sedel som na tenké línie pred sebou som videl oceán cítil som sa dobre bez strachu asi to bolo na dôležité

[@georgematheson3787]

Do you have plans for Interstellar 2?

[@georgematheson3787]

Micheal Fastburger would be great as the black hole.

[@jorgegomez524]

ah i got it! ... hum... not really

[@guybourassa8437]

Couldn't you show it in a cartoon? The theory is cartoonish.

[@blackraven4842]

If a blackhole isn't made of matter how can it have a mass?

[@cymoonrbacpro9426]

Not only are they astonishing they don’t exist!

[@TheGodlessGuitarist]

why do you say that?

[@cryptidian3530]

But God does? Sit down and stay quiet.

[@TheGodlessGuitarist]

apparently Cymoon doesnt exist either

[@aldito7586]

No such thing as a black hole. You messed up !!!

[@twinaluminium]

m sure the one who gets this all deserves nobel

[@darkknightsds]

Where does the matter go when it's destroyed though?

[@jamesruscheinski8602]

Is the center of black hole an energy density?

[@Mentaculus42]

So the “MATTER IS DESTROYED” but the “INFORMATION IS” … WHAT ¿¡?!‽⸘?!¿¡

[@TheDopedup]

That trampoline analogy really made me smart to that information:

[@ShutTheMuckUp]

Captain Spaulding's son...

[@BennettAustin7]

Very good physicist

[@saitejachukka2203]

Full video: kzbin.info/www/bejne/pZuUcpmhhbaUbK8

[@phdgkos47952]

i was thinkin if it is really a black hole in space, why is it rotating? ei: shouldnt the gravitational pull be a more or less a straight line from all directions, rather than a vortex?

[@jackdolah2031]

Kip is the greatest scientist after Einstein

[@hestonpfheffer1299]

How can these scientists talk so confidently about what's inside a black hole if nobody can ever go inside one and report back? I'm not saying he's wrong but sometimes it sounds like a priest talking about life after death and heaven etc, surely we can't possibly know and it's all theory?

[@DJ_Dopamine]

ikr

[@vivekanandmohapatra1815]

Then sir what is the surface tension of space and time

[@DrDeuteron]

surface tension is force/area = energy/volume = mc^2/(Gm/c^2)^3 =c^8/G^3/m^2 ....it's really stiff.

[@shantanushekharsjunerft9783]

Since the black hole has no mass, I presume the mass of the original star is converted into energy and the energy is stored in the black hole? Would that be potential energy stored in the black hole, like rubber on stretched trampoline?

[@paulmichaelfreedman8334]

potential energy stored in the fabric of spacetime, warping it in such a way that it wraps around.

[@Boogieplex]

If anything that falls into a blackhole apears frozen at the event horizon(wich has been explained many times), then why dont we see the hundreds,if not thousands, of suns and planets at its event horizon that have fallen into it throughout its lifetime?

[@massimookissed1023]

What you're trying to see of the things falling in, is red-shifted into irrelevance.