In 1915, Schwarzschild's understanding of spacetime was already so great that he was able to reach into the future and pull back a book with old Einstein on the cover. Amazing!

@seivaDsugnA

Жыл бұрын

Could be a camera trick, or some sort of slight-of-hand. Maybe psychosis, hypoxemia or urine overdose. Most likely a supernatural all-powerful conscious entity beyond space and time that created everything, though.

@hazyhalfmoon

Жыл бұрын

😂

@dreadlegend7365

Жыл бұрын

Lol good eye!

@etsequentia6765

Жыл бұрын

Little known fact, and the cause of many misunderstandings: Einstein actually looked like that since he was five. Later they doctored some images to make it look like he looked different when he was young and conceal the strange truth.

@ArvinAsh

Жыл бұрын

Yep, everybody knows he had mastered time travel! Don't you know?

You are the only astrophysicist that I truly understand. I don't know how you explain complex areas of classical and queries of new concepts in this subject area. Be it extensive experience, a natural gift, or both, I am so grateful I fell into your orbit. As a fiction writer who needs a believable background behind a project I am starting, I am so grateful I can turn to you to contain and expand my plotting. Where were you when I was at school? We never even studied physics. I took it up as a hobby and had so many questions I knew it could only ever be a hobby. A lifetime seemed too short to answer even basic equations. You give me confidence to doubt, question, and then understand enough to move on. Physics has so many unanswered questions. I now feel reassured, from your lectures, that I know it is not ignorance, but curiosity that confounds me, and can comfortably work with what I've learned from you, knowing that I can tune back in when I get confused. I'm sure this is one of numerous similar posts!

@ArvinAsh

Жыл бұрын

Thanks so much. I'm glad I can help satisfy some of your curiosity.

@rycriswell2326

Жыл бұрын

Queries? C'mon man, that doesn't make you sound smarter..

@educatedguest1510

Жыл бұрын

Just today Dr. Michio Kaku tried to save Big Bang by claiming that 3-days ago found 6 mature galaxies, one of which 14.5 billion years old and as massive as Milky Way, are not galaxies, but black holes. And last month Dr. Michio Kaku lobbied financing new accelarator to find out what happened in first second of the Big Bang. Definitely Dr. Michio Kaku has conflict of interests, so he proposes new 2-day old theory that one thing that never happened is happened due to other things that never happened. There were no Big Bang and there are no Black Holes (just images of non-ignited stars due to very slow time around them).

When it comes to explaining quantum and astrophysical concepts, you have found the "goldilocks zone". As a non-physicist, your channel does the best job of toeing that thin line between giving just enough detail (but more than a doc) to quench the curiosity, but not so much as to discourage the viewer. I really appreciate the time you put in, thank you!

Arvin is the G.O.A.T. at explaining physics to common people like me :) I learned more physics during the pandemic thanks to Arvin than I did in college, thanks Arvin!!!

@ArvinAsh

Жыл бұрын

Great to hear that you find my videos useful.

This was incredible. Thank you for making such a complicated subject so easy to understand!

@ArvinAsh

Жыл бұрын

Thank you for the compliment, and thank you for the sponsorship!

@magellantv

Жыл бұрын

@@ArvinAsh It's our pleasure! We're so thrilled to be able to partner with such an incredible content creator!

@CreepsCompilation

Жыл бұрын

As if this guy has any idea what he's talking about?

@CreepsCompilation

Жыл бұрын

I have a theory that leprechauns caused the big bang and are pulling on the universe.. Dark matter fairy dust explains it all..

Two years ago, my ignorance of cosmology led me to believe black holes to be a rare occurrence, an exception to the rule of gravitation, so not worth studying. Now, I understand that it's the most important cosmic phenomenon. Arvin's passion keeps me captivated.

How come only artists get to see what's inside the event horizon?

@ArvinAsh

Жыл бұрын

Artists' privilege...don't you know?

@kaxtorplose

Жыл бұрын

@@ArvinAsh Nobody ever tells me about these things. Now I'm seriously doubting the value of my computer animation degree.

@kaxtorplose

Жыл бұрын

@@ArvinAsh One more thing. I thought I was the only one who used the possessive apostrophe anymore. Now I at least know there's another out there, and I can finally bury this existential crisis in grammar for once and for all.

@politelypolite4835

Жыл бұрын

Came back to this 3 days later to add that bit about the apostrophe? I'm doubting the value of your animation degree now, as well.

I first learnt about Schwarzschild and the M-87 galaxy from reading German sci-fi. Years later I was immensely surprised when I found out they are real things.

What a fantastic video! Thank you so much for explaining some of a black hole's mysteries in a way that is accessible and enthralling.

This one gave me chills. Something about Interstellar and other media about humans encountering the effects of relativity really gets me emotional. Thinking about how you can always revisit a place or person but never their time, always becoming more distant in our memory. Beautiful and bittersweet as sunset.

@franks.6547

Жыл бұрын

If we conceive of ourselves as a worldline made out of 3D bodies that stretches throughout 4D spacetime - then this worldline stays in touch with everything/-one we ever encounter. I like to think of myself as a row of people "waiting" in line (in the time direction) - every instance of me is just thinking that they are in the "now" and they have memories of my younger versions - but they are there forever in spacetime (a.k.a. the block universe) Some alien that moves away (?) from us right now some billion light years away (from our perspective) will from their perspective figure that it's living at the same time with some precious moment in our past. We are an eternal engraving in 4D regardless what we might perceive at any specific event of our life.

9:29 "whatever is inside, has not happened yet" (from outside view) i have never heard black holes being described this way, but it is such a perfectly clear way of thinking about it. ty! people usually say that time stops on the horizon. same thing, but seems so hard to grasp when stated like this.

As usual, you give more information than almost any other science video creator on the internet while also making that information relatively (pun intended) easy to digest. For example, it was quite interesting to hear about how many planets could theoretically fit in the habitable zone of a star without interfering in each other's orbits, compared to a similar area around a black hole of a certain mass (even though most black holes are unlikely to have any planets at all, and there's no habitable zone at all around them). I always love these new tidbits of knowledge.

Black Holes are time machines that collect the fuel for the big bang!

@frankelkjr8041

Жыл бұрын

Nice!! I like that …. Your name makes me wonder how you thought of that 🤔

@emmanuelweinman9673

Жыл бұрын

They do a lot more than just collect energy. The warp it, hold it, and release it as hawking radiation.

@eternalsoul3439

Жыл бұрын

Too close to reality you stole my intelligence when I was dreaming. 😂🤣

@emmanuelweinman9673

Жыл бұрын

@@eternalsoul3439 we share the same intelligence in different brains after all 😉

@DarkMaidenFlan

Жыл бұрын

No, the matter the collect is converted into a energy that permeates the space-time of the other end of it. That energy causes space time to expand, likely at an increasing rate as its fed.

I love your explanation of things and your voice is phenomenal for the videos you create. Power to you always.

Einstein was certainly no math-novice, but his greatest asset was his imagination which combined with science produced advances we still marvel at. Schwarzschild was a pure mathematical genius. That he died so young was a loss to the world. His day job as an artillery officer was to work out the math for the gun trajectories which must have been mere child's play for him.

Wow this video is amazing. I learned some things I hadn't known, and I love how simply it's explained and the graphics are top notch. Subscribed and looking forward to many more.

The Galactic Center Saga by Gregory Benford also has a civilization living around the black hole in the center of the galaxy. It is one of my favorite sci-fi series as it also explores the dangers of AI and where that could end up given enough time. The novel Dragon's Egg by Robert L. Forward is an exploration of a life-form that lives on the surface of a neutron star. Very interesting story.

Funny coincidence: Schwarz = black / Schild = shield and this turns out to be the limit, the shell (shield) of the blackness (absence of light) of a black hole

One thing I really appreciate regarding Arvin's popularizing of Astronomy is his originality. He finds unique points or perspectives to cover not found in the glut of other YT astronomical presentations. This originality gives him the edge in content, imo.

Just wonderful, Arvin. You are a superb teacher with an extraordinary mastery of your subject.

Best science channel on youtube. Arvin is the sweetest guy ever

You are very, very good, but you surpassed yourself this time. This is the best description of black holes I've seen.

Arvin I have watched many black hole YT videos and was surprised that I saw many 'new to me' things in your presentation. Very well presented. Kudos to you. André in Sydney ⚫

This guy explains things so well

Inside a black hole, all moves to the singularity and the more you try to escape, the faster you go to the singularity because each time you move inside a black hole, the faster you accelerate your time in the direction of the singularity (that is the thing that is in the future of all things in the black hole). The only way to fall into the singularity at the slowest pace, is to not move at all and just fall in. I can say that it's exactly what happen in the universe itself. We are going in the direction of the future (whatever it is), if we accelerate in some random direction, our time dilates and we go faster into the future. There is no way to escape, impossible to go back in time. The only way to go to the future at the slowest pace, is to not move at all.

@ArvinAsh

Жыл бұрын

That's a good way to look at it!

@arjavgarg5801

Жыл бұрын

Also the fact that time and space are said to switch around in the black hole

@politelypolite4835

Жыл бұрын

Also there's a really good yogurt shop in there too.

Another great video Mr Ash . Coincidently the next video in my feed was Lee Smolin talking about his idea of blackholes being a new Big Bang . Fascinating idea .

Fabulous, fascinating and very informative. Thank you

Hi Arvin thank you for these amazing videos. You have a unique gift of bringing deep concepts in a simple way. Could you do a video in this series that then explains how, from Oppenheimer’s work, Roger Penrose won the Nobel prize for showing they are inevitable with the inexorable march to a singularity? I could never understand why there isn’t a similar exclusion limit at the quark or smaller level, that is just beyond when spactime is irreversibly curved to prevent light escape. Would that have solved the singularity problem? Could there be a “quark” star that exists at smaller scales within the event horizon? Would love to understand how Penrose and others proved this could not happen. Also, if an observer sees time stopping at the event horizon, does somebody at the event horizon see the whole future of the universe pass in front of them when they look out? So many question, thank you!

Always wondered though: How do black holes give out Hawking radiation if nothing has (from our point of view) fallen into it yet?

Love your videos!! I would really love to see one about identical particles and how symmetrization Postulate makes phenomena as Pauli's Exclusion Principle arise.

There is something always certain about your videos Arvin... I'm NEVER disappointed!!

Man doesn't it almost just make you want to read all the physics books you can, really understand maths and actually be able to figure this stuff out too?

Nice! Black holes are such a fascinating subject. Regarding time, I think it's very interesting that photons do not experience time. From the perspective of a photon, everything happens at the same time. I don't know if you had already made a video on this subject or if you would consider making one...

@misterlau5246

Жыл бұрын

More like they don't experience anything 😳👍🤓

@alphagt62

Жыл бұрын

Perhaps that’s why their charge never fades? They don’t decay, because they are frozen in time?

@misterlau5246

Жыл бұрын

@@alphagt62 they do decay. Don't think of them as something more than one of the most gravitational objects in the universe, at enough speed and distance, stuff orbits like anything else. But energy is something that in total is always the same amount. If x energy goes inside, if it gets out can't be more than x. And everytime any object interacts with others, if those objects are affected by the energy of the black hole, it has to give some of it to the objects. Just it has to pass like trillions of years but they will lose enough mass to explode and return the energy to the exterior. But there are the problem we live too little, we can't see a star birth, development and collapse...

@Dan-mm1yl

8 ай бұрын

​@@misterlau5246 There is more than 1 star

@misterlau5246

8 ай бұрын

@@Dan-mm1yl yes, why? 😅

"And that's coming up right now!" Gives me chills every time! Never change this intro!

great great video Arvin. thank you

Great summary! Geodesic incompleteness and consequences would be a fun video.

@kylelochlann5053

Жыл бұрын

It should be clear from the video's description of the singularity that Arvin doesn't know anything about geodesic incompleteness.

I was thinking about how QM prevents electrons from "falling" into the nucleus, and was wondering if anyone has hypothesized an analogous process that creates a minimum energy orbit around a singularity. Not sure how it would work considering that gravitational potential energy would be near infinite for orbits approaching zero distance, but I figure that it would be worth a try.

@timurgabdsattarov1613

Жыл бұрын

Well the smallest distance from the black hole where light can go around it is the Schwarzschild radius so…

I think your final words are, in fact, the most accurate description of the fate of time and reality that I have ever heard uttered! Given the distinct possibility that each Black Hole gestates a parallel/notional universe with their own Black Holes - and that these remain within the boundaries of our own 'Mother' universe - there will never be a finality to space-time. A 'Continuum' indeed!

I'm speechless with how intelligent you are with all the other astrophysicists. Thank you so much for making it somewhat understandable to people that don't get the math.

I have always thought that inside a black hole is just a really dense, small star which shines brightly, but the light can’t escape it’s own massive pull on space time.

@thedeemon

Жыл бұрын

Hawking and Penrose have shown that general relativity equations dictate all the mass under event horizon to collapse into singularity.

@tjsogmc

Жыл бұрын

You might be right, who knows? We don't have any information from inside the event horizon, just guesswork. It could be marshmallows and unicorns. No way to know for sure because we can never test the hypothesis.

@darkknight097

Жыл бұрын

I thought that too. I mean, the only difference between neutron stars and black holes is that the latter has a bit more mass. They both form in the exact same way (Or two neutron stars collide together) The implications of a singularity just doesn't make sense. Like i thought it was supposedly impossible for matter to occupy the same space. Being a singularity would mean that the atoms, protons, quarks (however the matter is broken down inside one) overlap eachother and occupy the same space at the same time. I don't get why blackholes aren't just considered a more massive/dense type of neutron star like a magnetar or pulsar

@ozzyg82

Жыл бұрын

@@darkknight097 yes, well put. I’d be interested in hearing someone do a talk on those various points and perhaps why they are or aren’t possible.

Thank you very much publisher.

Thanks for blowing (up) my mind! But you and your gargantuan good channel are still my best friends!!! Thanks Arvin! 👍💪⚫❤️

Do gravitational waves pass through everything unimpeded, or do they diffract when passing through mass, like light through a lens? Just wondering if we could use them to study black holes.

@alphagt62

Жыл бұрын

The gravitational wave detectors actually measure the distortion of the planet. The earth actually waves, warps, with the space. They have observed black hole collisions by comparing the readings from several detectors, to determine which way it came from. But does the Earth, or the Sun or larger objects change the waves as they pass through? Lensing as you put it? That’s very possible. A very good question. If the Sun was between us and such an event, would it alter our readings? Is there any way to test that? We need a wave detector on Mars, or some other location to test it.

Hi Arvin , thank you making physics understandable for the commons 😊. I’d like if it’s possible to explain Einstein equation . Don’t laugh I’m curious health worker.

@ArvinAsh

Жыл бұрын

Thanks. I did that a bit in this video: kzread.info/dash/bejne/gKeJz5umfrvYiJc.html

Wow - that is a truly great episode ❤

Thank you for your simplicity

Another phenomenal breakdown of nature’s most mysterious objects! *If you knew you were guaranteed a return trip, would you take a trip to the Event Horizon?*

@MrElvis1971

Жыл бұрын

No, I wouldn't. Too much stuff to do in one short life.

@KatjaTgirl

Жыл бұрын

A trip to the event horizon would take longer than the age of the universe though....when you return Earth and everyone you knew would be gone... so no thanks...

@smlanka4u

Жыл бұрын

Gravitons will return and accelerate Black Holes and other objects to the center of this part of the universe, causing them to convert from matter to energy-beams. Supernova explosions could happen only with the help of a lot of gravitons that comes out quickly. Neutrinos must be the gravitons.

@DrDeuteron

Жыл бұрын

Looking up an watching the future pass me by would be too much to handle.

@fundemort

Жыл бұрын

1 light year = 9 trillion km. so say a human's age is 100 years. a human can only travel 900 trillion km before he's dead.

Love it! Complex ideas explained so easily! Thanks @ArvinAsh! #Inspired

If you find science very very exciting then you are learning it from right teacher like Arvin. -richard Feynman.

@davidclark682

Жыл бұрын

“If you think you know QM then you don’t understand QM” R. Feynman

@PMA65537

Жыл бұрын

@@davidclark682 If you think I'm dead you underestimate how much fun I have posting on the Internet better stuff than Gell Mann. -- R. Feynman

Peter Cawdron's books are great! And there was good scientific paper I read about the possibility of habitable planets orbiting a black hole and it was compared and contrasted to Interstellar. I don't remember who published it but it was an interesting read!

I totally forgot about this channel, glad I found it again.

What if we put one of the particle of entangled particles into the event horizon than we can know what happened to that particle we put in by observing the particle we have out of the event horizon

@sagarshrestha5800

Жыл бұрын

Nice

@AndrewBrownK

Жыл бұрын

No

@bismarcknorthdakota7183

Жыл бұрын

I wan kno that too!

A great advance in broadcasting scientific information.

I think you’re my favorite youtuber. Your videoes are teaching me and everyone else so much! Thanks for doing this ❤️🙏🇩🇰

Excellent! Thank you

I'm so glad you explain this while acknowledging our limitations rather than simply spouting theoretical information as if it was fact.

Wow...... Breathless..... And speech less.....

You have one of the best channels on KZread. Thank you!

@ArvinAsh

Жыл бұрын

Much appreciated. Thank you.

That's coming up, right now! I find this style more fascinating than anythig else.

Between the relativistic dilation of time around a black hole along with their massive life expectancy, I can't imagine how would be the perceived flow of time for the life it could be formed around a black hole

@ArvinAsh

Жыл бұрын

Flow of time would not change from the perspective of anyone within the high gravity environment.

I love your videos sir ❤️. Your explanation is the simplest. Love from India 🇮🇳.

Very nice relaxing video

Wow, cool stuff!

Always known this but thanks good listen

Very much information 👌

Incredible content

This is awesome.

love your Channel

Thanks Marvin

What an amazing video !!!!!!!!!!!!

Great video - learned Bhole and excretion disk abilitites to harbor way largerer number onf planets around itself than otherwise that of a Star -:)

Great video :)

Amazing Ash! I have a feeling you've been on a quest for the Grand unified theory :D

Just recently read a paper on black hole star, and it's really hard to imagine that such stars exist.

You are one of the best content creator on youtube. Love from India.

fascinating video

Imagine a force that pushes everything apart and a force that pulls everything together and then a force that stops everything coming together and then more forces with more special rules that are discovered after the first forces, and every force has a name that sounds like it's properties. Just being silly, I actually do like your work.

@ronaldkemp3952

Жыл бұрын

You just described gravity, dark matter, dark energy and a white hole connecting to a black hole through a wormhole on the other side of the universe.

Arvin what do you think about the wormhole sycamore identified? They think they have a theory of quantum gravity, I would love to see a video from you on the subject!

@ArvinAsh

Жыл бұрын

That's my next video, in fact! Coming in early January. Stay tuned.

One more Nicely explained Subject

Ever since I’ve heard about black holes when I was a kid in the 90’s I felt like a black hole sounded like a reverse big bang. I just thought that nobody talked about this because I was wrong since it seemed so intuitive to me and these things tend to be unintuitive.

"That's coming up. Right Now. (2 seconds of dramatic music) Before we start, a word about our sponsor..." - (almost!) every Arvin Ash video.

For some reason, I like the short music in the beginning :)

Videos like this always forget to mention - if you were the astronaut falling into the black hole, your perception of time would remain normal within your reference frame, but you would gradually see the rest of the universe speed up as you approached the event horizon. In such a way, you could consider occupying the edge of an event horizon as a form of forward-moving time travel, as the rest of the universe ages faster and faster the closer you get to the object. I wish I knew enough about physics to visualize how extreme this effect could be - would you be able to witness the heat death of the universe before dropping off into the edge of eternity?

great vid

Very impressive video

Arvin, your superhero intro text along with your curated selection of rotating stock footage just helped me become an armchair physicist. No longer am I ignorant to the complex information perched at the fringe of human understanding. Hearing broad physics concepts explained in terms such as "a point in space becomes a point in time" is like seeing a crayon stroke across the printed boundary of SpongeBob's head. So clear and elementary is the compaction of matter at the quantum level, I could illustrate it by crushing a beer can against my head. All this, made possible through the tone of a friendly primary care physician, and the sales prowess of a Time Life infomercial. Keep doing your thug thizzle.

@ArvinAsh

Жыл бұрын

lol. You must be a poet my friend!

@BossLevelPro

Жыл бұрын

@@ArvinAsh ha ha, nope I'm an accountant who just can't focus on accounting sometimes. I wouldn't have been so snarky had I expected an encounter with the man himself! Most of these physics guys are so Hollywood these days! Stars, so to speak.

A few concepts I can never seem to grasp: 1. If a star collapses under its own gravity, how can it explode outward to escape that gravity? 2. If light can't escape a black hole, how do jets of gas escape the gravity?

@ArvinAsh

Жыл бұрын

1) The core of the star collapses, the outer shell collapses inward then bounces off the collapsed core. 2) Light does not escape from within the black hole. It is escaping from the accretion disk that is circling the black hole in close proximity to it.

"slightly lower gravity on top of the mountain" @7:10 How can this be? Certainly if you were Everest's height above the surface, gravity would be less. But when there's a mountain beneath you, you can't just assume a sphere and measure the distance to the center, neglecting the mountain. As an extreme example to illustrate the point, if you went into a deep valley, you are closer to the center of earth, but part of the earth is now pulling *up* on you. In fact you can neglect the shells of matter above you (they exactly cancel if you run out the math), and it's as if you're standing on the surface of a smaller planet. Take this to the extreme with a valley of Earth's radius, and you'd be in zero g. Assuming the mountain is wide (like Everest is in the Himalayas) I'd expect it to add more gravity than the altitude takes away. Someone please explain this, am I wrong or is Arvin, and why?

@bluehope42

Жыл бұрын

The mass of the earth is what causes gravity and compared to that the mass of the mountain is negligible. Moreover, gravity reduces by the square of the distance, so the height of the mountain matters a lot. That's my understanding, someone correct if wrong.

Black hole time dilation is interesting, matter passing the event horizon is at a standstill, brings pause to wonder if there's yet another fundamental limit to breach beyond the TOV.

Thank you for pronouncing Schwarzschild correctly. No childeren were harmed during this video.

@ArvinAsh

Жыл бұрын

Thanks. It's sounds cringy to me too when people say Swarz-CHILD

Hello Arvin.. First of all I must say that I absolutely love your videos as it's understandable in the simplest way one could possibly explain. I got a thought in my mind that i would like to share. Maybe it's a blunder but I got to share .. Hopefully you would read this. Might there be any possibility that a black hole can eventually become a star once again. Over the years a black hole is sucking up all the matter that's passing the event horizon to a confined space (I don't believe it's a single point/singularity) and at some point, the matter inside of a black hole will get heated up due to the frictional force and might start a fusion reaction inside of a black hole, thus forming a star OR should I say a white hole which is believed to be so bright and hot which emits everything out of it. Is there a possibility?

Peter F Hamilton's third book in his Night's Dawn trilogy has that universe's most advanced species' home system set up like the one you mentioned. Hundreds of terraformed earthlike planets in a stable ring, easily visible at ground level and dominating the sky. It's hinted that it's not the world the Kiint evolved on, rather that they engineered the entire system.

They've found black holes and recently, light holes. Black holes suck in and destroy everything. Light holes spew out massive amounts of energy. I think both exist to help keep the universe itself in balance.

I am your subscriber and enjoy your excellent videos

"Whatever's inside the event horizon... hasn't happened yet". Actually makes sense, but at the same time - Mind: Blown.

These just makes the theory of a universe in a black hole more plausible

glad the lieutenant didn't put in as much effort into his job, he may have figured out how to win the war.

9:20 I think that nothing *needs* to be happening at singularity as it is an _instance_ in time, like a photograph but of the universe /when the singularity was formed/. It is static in time, like derivative of time, of but of _zero_ width, which is not enough for anything to happen.

This and Pbs Space time gets me trough.

A weird funny thought; what if some super nova explosions are so massive that it creates a damage to space time fabric hence blackholes are formed instead of singularity it could be a hole in space time fabric