The Map of Black Holes | Black Holes Explained

[@David-bh7hs]

I am very pleased that you took a realist, observationalist perspective when it comes to astrophysics. Too many science "educators" only want to hype up a crowd, instead of telling them what we actually know. That is the wrong way of reaching to the public, over promising the actual knowledge in the scientific lexicon is a quick way to ruin someone's trust in scientists. The fact that you have the guts to say "this makes no sense, so it probably isn't true, we just need to find out why" is amazing. Too many people go "science is WACKY! Isn't that cool!" and in doing so destroy the credibility and tradition of years of scientific research.

[@bjrnvindabildtrup9337]

I agree. Lot of math "educators" like that as well, like the numberphile youtube channel. The camera guy says something akin to "but hey, that don't make any sense" and the mathematician just sits there like "Precisely! isn't that cool how it don't make sense". And they forget to mention that they work under a completely different framework than normal everyday math, the kind that makes intuitive sense to laymen.

[@yash1152]

> _over promising the actual knowledge in the scientific lexicon is a quick way to ruin someone's trust in scientists_ yeah, like mine did gradually... somewhere between the period of last 2 years and last 2 months...

[@ivoryas1696]

@@yash1152 Yeah, but if you were to inform yourself about science, you can legitimize and verify your skepticism. Just curious, have you tried to?

[@yash1152]

> _...tried to legitimize and verify skepticism?_ @@ivoryas1696 as in? reobserving and rechecking if it matches or not?

[@NarynbekGilman]

On the other hand, the Universe is under no obligation to make sense to us. Indeed, there are some scenarios where we have to work with infinite densities or singularities. So, actually, we don't know what's happening there. We can't yet boldly state either that there are no singularities.

[@antonkucera6608]

The way he conveys this information in such a fascinating and engaging way is worthy of global recognition Keep up the great work Dom!

[@badmonkey2222]

I wouldnt go that far

[@robstringer100]

Global recognition lol... earth is flat ! But cool story bro 😎

[@reallynoname]

@@robstringer100 believe whatever you want, I don’t really care anyways…

[@Strype13]

If you aren't familiar with it, you should also check out Anton Petrov's channel. If you like this one, I think you'll enjoy his as well. Anton, meet Anton.

[@domainofscience]

Hey thanks! That's such a nice thing to say :)

[@upandatom]

Your breadth and depth of knowledge is so impressive 🤩

[@anavrinamrak7370]

OMMMGGGG I Have a HUGE Crush on you!!! Will you go out with me?!

[@wimpykid004]

@@anavrinamrak7370 man correct your English and stop being a random simp

[@Nimish204]

@@anavrinamrak7370 you really are a creep

[@Drefar]

Just study and you will also be a Brilliant Fake...

[@thejollyman]

Thats not knowledge thats repetition, does he know gravity is not even a force! Space is fake.

[@carlosmadriaga1409]

This is perfect because I'm about to study black holes for my astrophysics course next month.

[@wat2206]

gl

[@risav202]

Are you a weeb?

[@twenty-fifth420]

This man about to pull an Infinite Void from a youtube video. His first step towards his ascension above the heavens and the earth.

[@sulemaansk45w]

University? Please

[@XeZeLgotdrip314]

From where

[@saikashyap9125]

The smile at the end .I can see fear in it

[@domainofscience]

It's the fear that drives us.

[@masternobody1896]

@@domainofscience you should read Quran that book is epic

[@harshavardhan9399]

@@masternobody1896 fck quran

[@antares1840]

@rover That would be the mass of the remnant not the mass of the whole star.

[@ananyabhagat7052]

@@masternobody1896 dude please not here , read the room

[@Hulululul488]

we need more chanels like dos, kurzgesagt, veritasium, pbs spacetime, numberphile, science asylum and vsauce.

[@s4ih315]

much more people would get into science!!!

[@michaelaramis1210]

dont leave out smarter everyday :)

[@pasijutaulietuviuesas9174]

These channels are great for visual surface-level introductions and inspirations, but to get a deeper understanding, yet still maintain the intuitive and visual idea, I highly suggest 'Physics videos by Eugene Khutoryansky', ScienceClic, 3Blue1Brown, Fermilab, Socratica, Huygens Optics, Mathemaniac, etc. If anyone else wants to share great science channels, I'm all ears. Also, speaking of PBS SpaceTime, I also suggest the now-defunct channel PBS Infinite Series, although it's dead, it still has some absolute gold videos.

[@michaelaramis1210]

@@pasijutaulietuviuesas9174 cool list, does zack star makes it in your list?

[@pasijutaulietuviuesas9174]

@@michaelaramis1210 I've seen some of his videos, but I don't remember well which category I'd put him in. Should probably rewatch some videos from his channel.

[@dibeos]

All these maps that you make are extreeeeeemely useful, because they give a general picture of each subject. I remember when I just entered in college to study physics, and for me there were so many distinct attractive areas that it was hard to decide which one I would focus my carrier on. If I had one of your maps back then, i’m sure that my process of decision would have been smoother. Just want to encourage you to continue “mapping” ONTO the whole realm of science and math haha. Great job!

[@MedlifeCrisis]

I love your map videos 😍

[@domainofscience]

Thanks Rohin! Glad you like them ☺️

[@F00LSG0LD215]

@@domainofscience Isn't that map FROM Kurzgesagt? If not they had one very similar or a very similar channel had one.

[@mizzshortie907]

@@F00LSG0LD215 was thinking the same thing

[@eresoup7229]

@@F00LSG0LD215 don't think it is and if it is that doesn't matter, Kurzgesagt normally explains things in much less detail compared to DoS, leading younger audiences to tend to Kurz and maturer audiences that really want to brighten their horizons over here

[@babaranwar5462]

@@eresoup7229 admittedly I'm 13 (this is my dad's account) and I agree with you fully regarding the target audience/demographic of Kurzgesagt. I also want to point out that this is probably a method Kurzgesagt uses to make their viewers more attached and addicted to their channel. It's funny, honestly.

[@hdxk8148]

I hope the devs will eventually fix this "Black Hole" bug, it crashes the game if you get succed in. But jokes aside this was the most informative video on black holes I've seen so far. Can't imagine how much work and time it was to make this.

[@mr9293]

It's not a bug. The Universe is just rendered real-time but the PC of the simulator can't handle all that mass in that point. So it creates a black hole to not cause an error. I prefer the black hole over the simulation-stopping error

[@bastiaanwilliams5311]

Only clear and no nonsense video on KZbin about black holes. Thank you.

[@valeriag2842]

I just love the posters. There's something about the design, the details, EVERYTHING. These are such high quality videos

[@deciduowl]

Omg Professor AstroCat was my childhood. I never knew one of my favourite channels made the books that got me interested in space and science.

[@sebastianclarke2441]

More black hole mysteries to ponder: How do gravitational waves interact with frame dragged space time? Does a black hole block gravitational waves passing through it and absorb its energy? Or would they pass right through, possibly extracting information? What would a black hole merger with a white hole look like?

[@fjbayt]

Gravitational waves are formed from the frame of space time. They are space time bent by gravity and transmiting the information of the "bent" at the speed of light and as they rotate they take the form of a wave. Black holes lose energy in the form of gravitational waves, in BH mergers there is a swirl of gravitatioal waves that interact with the path they take when coliding, and when they colide and they form a new BH there is massive conversion of mass/energy in the form of gigantic grav waves that carry many solar masses away. The information of the wave depends of the closest patch of space time, that patch or quanta is one of the mysteries of quantum gravity. White holes have not yet been discovered... The best candidate is the beginning of our Uhiverse, and that "white hole" gained against the primordial BH that existed in the early Universe.

[@majacovic5141]

@@fjbayt Can you give more details? Like, what is the "bent"? How does a gravitational wave change spacetime - like a spring, like a sine-wave, what? What makes a gravitational wave gigantic? What dimensions does it have? As in, a release of a 100 solar masses of energy would do what exactly to spacetime? Thanks

[@fjbayt]

OK, ill try, first the gravitational wave is a distortion or ripple (with bents) of space time. Space time, is acording to relativity a geometry that is influenced by energy (mass is just a property or expression of energy) and simultaneously mass/energy follows that geometry in motion. Imagine a pond, when you wave your hand in the pond, the water molecules are dislocated by the presence of your hand and then they carry some of your energy (because you spent some effort in moving the water) then they radiate from your hand outwards in the form of a wave, and that is information being carried by the water informing about the energy exchange that you produced, if the wave that you produced reaches a leaf in the water the leaf will go up and down following that wave, corresponding to the energy being transmitted, and if you oscilate periodically you get a sine wave. Now General relativity is very close to this picture, but space time is very stiff, it takes enormous mass/energy to produce a wave that we can detect, although every time we move our arms we are producing gravitational waves (but too tiny to detect), the amount of energy that you need to displace space time you lose that energy to the wave, trading rotational energy for it too for example, then that distortion of space time is radiated and the with super sensitive lasers we can detect the wabble that they produce, by the interference pattern they induce in the laser detector. Now in the pound analogy what we do not know exactly is what are the corresponding water molecules in space time are, what is the tiniest patch of space time that you can measure, what is the space time quanta and how they transmit information to each other. We already know exactly how electro magnetical waves function for example, and an electron is an example of a quanta in the electron field. In the extreme case of a giant gravitational wave close to the center of mass of a BH if you were feet down first they would start stretching (in the 3 spatial dimensions) first before it reached your head, also the time at you feet with go slower than in your head (from your head perspective) thats what they call spaggehtification by Black Hole. Study these topics, there is a lot to learn, and its fascinating...@@majacovic5141

[@majacovic5141]

@@fjbayt thank you, that made sense. I'm really curious abou *how* the fabric/geometry is distorted. I figure the pop-science animations are metaphors/oversimplifications? Maybe I wont understand it but still, fascinating. Thanks

[@fjbayt]

@@majacovic5141 Start with special relativity, lorentz transformations and minkowski diagram of space time, watch how the referentials bend to acomodate the light speed constant with 45º angle, then imagine that information traveling at the speed of light outwards, then if youre up to it, general relativity and penrose diagrams, there is lot of visual and good videos about these topics. If youre trying to understand how space time bends in a quantum way, no one knows for sure and there is a Nobel Prize for the one that answers that question. We have to accept that somethings we cant know for sure...for now!

[@danielpirone8028]

Fantastic video - thanks for sharing! Also the dudes pruning trees in the background was amusing

[@aaronjosephalbert6917]

pls put a time stamp on when that happened

[@cheaterxl243]

Im about to learn about Black holes in about two years for school so this video is perfect for having a huge headstart.

[@aniruddhamrao9600]

Making a concept flowchart in the form of maps is way better than making complicated notes

[@GrandAdmiralMitthrawnuruodo]

It always delights my heart, when you say: „This is still active research“, it gets me very excited for my future! 😃

[@zetadroid]

I teach an advanced gr lecture in my uni and I must congratulate with you, because this is quite a good video with a complete and accurate summary.

[@darkenergydoesnotexistbyjo1473]

This is the most concise explanation I have seen about black holes. You raised a couple of questions one of which is "what is mass". Matter gets destroyed during a black hole's formation but it seems that mass is conserved. So, what exactly is mass (not as a property of matter).

[@aaaaaa2362]

Now this is the content I’m looking for.

[@boum62]

My young son sent me this link. Your video was super. Well done my friend.

[@isbestlizard]

I hope there are quark stars. It'd be awesome if in a couple of decades they can be added to black holes as having been predicted then observed :D

[@utsavbhurtel]

As a science lover who is just at tenth standard, I often revolve a question that why does the universe behave the way it is behaving. Many might ask why do things exist but I think the other question might be what would there be if nothing were there. Well, I haven't come up to the answer yet but I am pretty sure science had/has/will have the answer. Love your videos. Continue making such wonderful scientific videos.

[@so_dumbshu]

something can't come from nothingness, humanity will find and answer one day.

[@alextube9639]

That is crazy. You advertise those books for those who do not know while I actually bought "Professor Astrokatz" (german) years ago and didn't know the channel exists and now watch you for the first time.

[@nannaz16]

Omg, If this is poster which is available definitely I need it

[@nannaz16]

Oh yes its available :)

[@salt4045]

ok then

[@galinavidenov5417]

I can't imagine how much time and effort you put in your videos! You are really smart! I want to study physics and your videos are really amazing and helpful!

[@Beryllahawk]

Singularity RING. That is a completely new thing to me, which is pretty damn cool on its own. Only just discovering your channel due to the Map of Plants (which was lovely!) and this video was also just wonderful! The maths and theories around black holes are mind-melting, but you've made the information approachable without dumbing it down and without over-dramatizing it. And it's still exciting and fun because of the art! I really wish something half this useful had been around when I was still in school.

[@abdelrahman_osama]

Well I have just watched Interstellar and this is gonna be interesting

[@Justin-cw7zf]

Interstellar is great

[@eriktempelman2097]

Care to make a map of all movies that have black holes in them? :-)

[@The_Tormented_One]

I am a new subscriber of your channel. Came here after getting this channel suggested by veritasium. And your content is truly fantastic,informational and easy to understand. Love your content. ❤️👍

[@gowrissshanker9109]

Respected sir, I have some questions, it would be very helpful if you could answer for me,.... 1)Is it possible to produce em waves by oscillating the magnet to certain frequency?....if possible please explain how it's created sir 2)Can we produce em waves by oscillating the vandegraff generator?what's the difference between em wave produced from magnet, vandegraff,and AC current? 3)where does the energy of em wave come from?where the energy of em wave taken away from?? 4) how can an object obsorb the em wave...what does black body do when em wave falls on it,does it produce out of phase light wave which destructively interfere on incident wave...how can a em wave be destroyed? 5)can linearly accelerating, circulating, spinning charge produce light? How will that light look like? 6) does all AC circuits produce em waves, will AC circuit glow visibly when its frequency is frequency of visible light....why DC current does not produce em waves.... even though electrons collide with nucleus of the conductor and losses energy and ACCELERATES? 7)Why cannot neutral objects (Eventhough having positive and negative charge) does not produce em waves ...is it possible to produce em waves by shaking or vibrating the neutral object to certain high frequencies....how black bodies produce em waves?? Thank you sir

[@TheWestifyable]

Ya solid video bro. I’ve watched a TON of black hole videos and this is one of the best. Space is wild.

[@init_yeah]

As far as i understand light can't escspe not because its slow but the black hole forces all the path light take towards the black hole itself.

[@faustustm]

Great work on this topic and many others on your channel. Two remarks about this video: 1. I would like to get a little more information about quasars and especially pulsars and how they are "different" from supermassive black holes. 2. I also missed information about magnetars when you mention about neutron star as some people confuse magnetar with pulsar Keep doing this incredible work and educating people about this difficult concepts in much simpler and easier to understand way!

[@Electru522]

I know I'm incredibly late, but I only just found this channel. Hopefully I can give a little insight. Quasars are the result of black holes actively feeding. Those "relativistic jets" he talked about contain just a stupid amount of energy, and when they are pointed in our direction, we can detect them from across the entire universe. A Pulsar isn't actually a black hole, but a Neutron Star, which Magnetars are also. Neutron Stars honestly require their own little map like these, since they are about as varied and mysterious as black holes are (the only real difference is that we can actually make sense of Neutron Stars....at least on the surface.... literally). Neutron Stars tend to have magnetic fields that are, again, just stupidly powerful. The most powerful of these, the Magnetars, have magnetic fields so strong that they can rip you apart atom by atom. However, they don't tend to last very long (astronomically speaking), and the magnetic fields die down to a more "respectable" level (that is still stupidly powerful, just not atom ripping powerful). This left over magnetic field creates jets of light at the magnetic poles of the Neutron Star, and since everything in the universe has a spin, these jets of light spin with the Neutron Star. Every time this jet of light passes over us, we can see a very distinct jump in brightness of the Neutron Star when we observe it, causing it to "pulse" in brightness. Hopefully that answers your questions that you asked nearly a year ago!

[@faustustm]

@@Electru522 thanks for clarification. So additional question if I may. if quasars and pulsars both has jets that can be detected when that jests points towards Earth so how we distinct pulsar from quasar. Also I read somewhere that all Black Holes rotating (while some neutron stars does not) - does it mean that black holes also have magnetic field like magnerats?

[@Electru522]

@@faustustm Quasars are typically found from billions of light years away. In fact, we believe that no Quasars currently exist, and were only a product of the early universe when conditions were far more violent. Pulsars, however, can be found in our very own galaxy. Their brightness, when compared to Quasars, is like trying to see a candle on the moon on a sunny day. Quasars can outshine their entire host galaxy, while Pulsars simply don't have that kind of power. Also, part of the definition of a Pulsar is a rotating Neutron Star, so, I don't know where you heard that Pulsars don't rotate. But, Quasars would have magnetic fields, but not from the black hole. Instead, the magnetic field comes from the material in the accretion disk. I believe the strength of the magnetic field comes from just how much stuff is in the accretion disk, and possibly what exactly is in it as well. That being said, the strength of these magnetic fields simply can't compare to Magnetars. Those things are on another level.

[@faustustm]

@@Electru522 thanks a lot... I've finally found answer for some of my long lasting questions :) Many scientific books I've read are too complex for someone like me (just starting) and others ("for beginners") does not address this differences I was always struggling to grasp. One more time thank you very much

[@ivoryas1696]

15:20 Honestly, I can't specifically even remember the last time my mind was own that hard. Energies that dwarf fusion that aren't just straight up annihilation is something I forget exist, even sometimes when black holes are the talking point...

[@bigwig8657]

Loved this video, black holes are utterly fascinating, after I die if there were an afterlife I would just want to float around and have someone explain the mysterious as stuff in the universe tbh.

[@TheFos88]

That would be amazing

[@jimkon5767]

The way you break down theories for the layperson is very evident. Congrats! I agree with one of your last statements that we will never truly know lol ....

[@kagannasuhbeyoglu]

Thanks a lot DoS. I'm learning. I love this channel.

[@KalebPeters99]

Fantastic as always! Man, black holes are crazy. There's something oddly satisfying about the no hair theorem haha

[@smbhquasar1527]

Blackholes, one of my most favorite topics about space.

[@anomalocaris540]

you made astrocat books!!!! i love them!!!!

[@davy7366]

Best video about black holes not too much information just simple intuitive answers

[@davegillbert8947]

20:57 initially thought you were infront of a green screen lol, respect for the dedication

[@ferretappreciator]

God I absolutely adore these maps, and I've been obsessed with black holes ever since I was a toddler. I have wanted to throw myself into a black hole ever since I knew what they were

[@octoberonvox]

As soon as the jazzy piano comes in all I can see is Bill Bailey playing that grand from the inside with spoons.

[@tyronebigsby2169]

This was explained EXTREMELY well

[@ayssersoussi6198]

I have 6 questions: 1-Does a firewall exist around a black hole? 2-Does general relativity break down in the interior of a black hole due to quantum effects, torsion, or other phenomena? 3-Do black holes have an internal structure? If so, how might the internal structure be probed? 4-What is the origin of the M-sigma relation between supermassive black hole mass and galaxy velocity dispersion? 5-Did the most distant quasars grow their supermassive black holes up to 10^10 solar masses so early in the history of the universe? 6-Do black holes produce thermal radiation, as expected on theoretical grounds? If so, and black holes can evaporate away, what happens to the information stored in them (since quantum mechanics does not provide for the destruction of information)? Or does the radiation stop at some point leaving black hole remnants?

[@artdonovandesign]

*Origin of "Black Holes"* John Wheeler wanted to revive interest in General Relativity in the mid-1960's. His lecture in NYC to NASA scientists had discussed "gravitationally completely collapsed objects". After hearing this phrase innumerable times, someone in the audience had suggested, "Why don't you simply call them " Black Holes?" Wheeler loved It and started using it Or at least so goes the story 😊

[@Saurabh.Nikhade]

Excellent, you made simple so average person can understand

[@leonardoalvarez7504]

Wow! What an amazing video! You actually explained it all so simply and and easy! Congrats

[@kaku1985]

As always, an excellent video with the extact informtation density needed for drawing a map of something, just awesome. Keep spreading knowledge! - One of you patreons

[@dasibaho]

You definitely should make a book with all of your beautiful maps. I would buy it for sure ❤️

[@jimoo3751]

I really appreciate your explanations and your effort to spread so much scientific content! I follow this channel since i was in middle school, and now i’m studying to enter university. Always been interested in astrophysics, particularly black holes, so thank you for all your work! I learn so much from it, and also can improve my english listening skills :)

[@yash1152]

1:15 nice that u mention the true origins of it, and other names too. i didnt know this. 1:44 "the more dense..." i like the choice of this term over "more massive" *I am ALREADY LIKING this video* - yay for precision and good communication also nice that u havent restrained the captions - so that i could move them elsewhere from bottom - otherwise, when the captions properties are altered, they jump back to the bottom again on the next line 6:51 too

[@kantanlabs3859]

Another breathtaking summary of a fascinating domain of physics!

[@gueuledange06]

One of the best black holes videos I've ever watched . Thank you for all the information

[@All_Loves_Lost]

I have never seen a concept map before I watched your videos but how wonderful-!! You have done such a good job-!!

[@pixbo9133]

Please make a video about spin and helicity/chirality and the difference between them.

[@kchilvers1758]

My son and I love your videos, thank you so much for making them.

[@purplerats7215]

20:55 had me cracking up. Thanks for the video! Learned a lot :D

[@samwolf7445]

Well i think that i watched your whole videos and learned many things. Thanks for that. And if you dont mind, please make a map of logic.thanks again

[@epgui]

Please make a map of Statistics / ML! (suggestion: skip the introductory course stuff such as t-tests, and start with linear models) There's certainly a need for such a video, and there aren't really any good ones!

[@ajaykumarchauhan6312]

Wonderfully informational videos, like from a beginner to a pro level its informative, bless you and thank you vey very much brother.

[@ramraj6616]

How are you so good at explaining this than any of my teachers ever?!?!?!?!

[@theprophecy3302]

I love your videos. They are extremely intrwsting

[@lenora_v1366]

I would absolutely love it if you made a map of statistics next!

[@berserkerviking1]

Great overview given such a short amount of time!

[@bballanalytics1552]

Amazing video! Deserves 10M+ views. Much better than the other content out there. Respect my friend. Keep it up!

[@gamesmore6583]

A probable lower limit for a black hole's mass would be the planck mass. It is about 21.8 micrograms. A smaller mass would have a Schwarzschild radius of less than the planck length.

[@di9italzero500]

This guy has some of the best content on youtube. Great work. Thanks.

[@sethapex9670]

PBS Spacetime showed that you can create a naked singularity if you could add enough charge or angular momentum, to cause the black hole to go extremal. Essentially, you force the ergosphere, or it's charge equivalent, all the way down to the singularity.

[@senjunight5341]

a very good explanation on the topic of black holes :D

[@sciencepetr5179]

Dom this is wonderful. A really useful overview of the topic. Great map, great video.

[@sirfer6969]

100% agreed, liked and subsribed. Also one of the good things about Doms videos is all the interesting video links on the side. The Wikipedia rabbit hole has been replaced by the YT physics rabbit hole

[@yash1152]

@@sirfer6969 wikipedia rabbit hole has great suction ;)

[@lisabradshaw]

Love these maps! Both entertaining and educational.

[@jonathannoeverdin-gonzalez5364]

It's awesome how we discovered black holes through mathematics first, denying its existence, until seeing one back in 2013!

[@GuidoHaverkort]

Man supermassive black holes are just so scary to me. An incredibly huge gaping black well just sitting there

[@lizzybach4254]

Finally a video where the person isn't mentioning every 2 seconds why light can't escape a black hole!

[@libelldrian173]

I don't understand why we are so sure that there's a singularity in the center of each black hole when the equations of General Relativity collapse at that point. I always imagine it to be as if all matter that enters a black hole gets torn apart until every molecular and atomic bonds are broken and we are left with a blob of fundamental particles squeezed together as close as possible. That wouldn't necessarily mean that all mass is concentrated in one point...

[@grawss]

Great point. The whole thing seems to be rife with issues like that. Similarly, and including your point, any time they need to say the laws of physics break down, they aren't the laws of physics. It's like quantum physics: Nothing takes a state until observation, and therefore, they can't prove they're even studying the right thing or that even a photon exists, because the photon is just a result as it appears on a sensor rather than the action that makes light.

[@n.lischko1312]

It blows my mind the black holes are described by three parameters mass, angular momentum or spin, and electric charge. The same three parameters that describe subatomic particles.

[@someonethereto]

Your maps are gonna make it to High Valued NFT's. Mark my words.

[@alext5497]

Jpegs

[@wally_g5192]

Best explanation and visual demonstration of escape velocity ever! Great video!

[@overreactengine]

A potential new dynamic suggested by the (still very young) Wolfram Physics project is that “areas of extreme curvature look nearly identical to regions of space with an unstable dimension” (unfortunately I don’t remember the proper source, might’ve been Sean Carrol’s recent interview of Wolfram)

[@isobool3927]

The same black holes as they appear in my brain! Amazing!

[@nancykimmel6008]

This was very well done. I appreciate getting exactly the information I needed and the extra scientific theories that are currently available.

[@patrickgardiner1790]

Love the background.

[@brianbailey7128]

So interesting. Thanks!

[@casasdomundo]

Thank you so much you are the best teacher!! This video is amazing like all videos in your channel.

[@rowangoebel-bain3447]

my favorite channel out there !!

[@RezaHadi_A2]

Are you the long lost brother of "The Action Lab" Man?

[@enoshsubba5875]

Thank you

[@mickmickymick6927]

Dang, I wish you had gone further into that bit at the end about possibly needing to give up one of our fundamental ideas about how physics is. Like, some of the theories that explain black holes by giving up one of these and what that would mean for our understanding of physics.

[@لالهوةإلالهوتي]

I clicked hoping to see a map of the location of known black holes. You owe us that one!

[@IDNKEK]

Just thinking that something like black holes exist in a world i live in is insanity. Imagine seeing it up close

[@P.L.D.]

Amazing video, and definitely I will buy the books! All of them, because science is priceless!

[@Animeedits-d6o]

Ur explanation is so impressive sir... keep it up 👍

[@matthewtopping2061]

Great content. Way easier to understand than PBS Spacetime.

[@tamasmihaly1]

Are you too good for cars now? Merry Christmas! I love your channel.

[@aayushv08]

Any plans of creating a hardcover (coffee table style) book of all your maps? Would be super interesting!

[@tasfiatanha5225]

make a video about biochemistry!! Just only biochemistry!! I wanna know more!! Thanks for sharing this wonderful video... 😻😻😻

[@AndyMillerPhotoUK]

Very good vid. The event horizon only applies as a limit or "boundary" to massless particles. Since anything with mass cannot travel at the speed of light, objects with mass would be trapped to fall "into" a black hole well before reaching the event horizon [for light]. Accretion discs occur as a result of matter "approaching" a black hole and being accelerated and interfering with other matter until they become a plasma - this discs are some of the brightest objects observed AND are the source of very powerful jets (gamma/x-ray) which have been observed to extend for many hundreds of light years. Anyone who approaches a black hole will be eliminated by interference with all the other matter that is also on the same path. Rather than being spaghettified we would be turned into plasma. The Photon Sphere is very important. So are the even horizons for particles with a range of densities. 3Rs applies to the lightest particles. So no us. Given our current technology, we could go nowhere near a black hole - we simply cannot travel fast enough. AND we would be killed off by the vastly terrible radiation close t a black hole.

[@FilmmakerJ]

So, "Black Hole" was a descriptive term borrowed from an actual place rather than just a simple extrapolation based upon what it would visually look like? I would have never guessed that.