Why Black Hole Environments Are a Lot More Complicated Than We Thought

Supercut of the Black Holes series. Learn about how black holes form, about their features, and how they warp the universe beyond our ability to comprehend. One things is for sure, the existence of black holes means we can't take our "normal" as a given.
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relativistic jets accretion disk photon ring event horizon

[@michaelmacdonald2907]

The Universe isn't stranger than we think . . . it's stranger than we Can think. - Werner Heisenberg -

[@stevenmoore3480]

you'd have to be able to define thought for that to be true.

[@kx7500]

@@stevenmoore3480 realize.

[@idontwantahandlethough]

@@stevenmoore3480 I don't think that's actually true though, is it? I believe it's actually more that we would need to define 'thought' to be able to PROVE that it's true. It very well may be true regardless of whether or not we have the tools to prove it or not.. it's not like our understanding of reality has any real effect on reality itself, ya know? (although I suppose then we'd have to have a philosophical debate about what 'true' even means. Is something true because we can prove it's true, or is it true because it just so happens to have the inherent value of being true? Is there an objective truth? Is there any point to considering realities/scenarios that you could never prove completely? Beats me 🤷‍♂)

[@idontwantahandlethough]

@@kx7500 I feel like "fathom", "imagine", or "conceive" is closer imo. To me, it seems like you'd need to understand something first to be able to "realize" it. But... we *_don't_* understand the physics. So it's not only that we can't realize the full reality of the physics, it's that we can't even fathom what they could possibly be. One "realizes" a clock works because it has gears inside of it that turn the machinery. But now imagine it's an alien clock with weird alien tech instead of gears. Even if my bro Wuxnerzp described the clock to you, you wouldn't be able to 'realize' anything at all. First you would need to _imagine_ how such a device might theoretically work, and *then* you could "realize" the full workings of the alien clock. Idk, maybe I'm wrong but "realize" seems to basically be the "final step" of understanding, whereas imagining is one of the first steps.Learn a tiny bit --> [fathom] "hmm, maybe it works something like this!" ---> learn a bunch of stuff --> [realize] "ah, it _must_ work like this because that is the only configuration in which the device functions"

[@quantist4266]

This is a Terrence Mckenna quote, I'm amazed I'm the first to comment this. much love ❤️

[@anttam117]

I want to congratulate you. Yours is one of the few cosmology channels on KZbin worth anyone’s time. I like how you respect both the viewers’ intelligence and the subject matter. No bombastic background music, no movie-trailer style voice over. Just the science, the mystery and the awe of it all. Please, keep on the great work you’re doing!

[@christophermullins7163]

Agree 100%. I recently found astrum and I feel like I fell off the cliff of knowledge with no one around to pull me out. So much wonderfully created content on this channel to grow someone's understand of this universe.. it's simply astonishing.

[@melchezediek]

I second that. There was a channel whose name I can't remember, possibly the one that inspired your post, which I assume because I woke up to a video of theirs playing and it was guilty of all the sins you just described... And I remember, with that being my first impression of the channel and first waking thought that morning, just rolling my eyes. It was just so corny. All the melodramatic metaphors they kept dropping to describe celestial phenomena with equally melodramatic classical music in the background really started to wear on me.

[@flexico64]

I completely agree with this!

[@novobeast3146]

It's not that serious, ant

[@ephemera2]

Except a lot of it is wrong and therefore contradictory and therefore no true understanding

[@AkiraN19]

The ability to condense information and present it in such a way that even someone with no prior knowledge of physics can understand is incredible.

[@cyrileo]

Nice work. 😎👍

[@testimonyoftime]

Wow has it already been an hour? The amount of professionalism and passion put into this content is nothing short of amazing. Thank you! New sub

[@frankdimeglio8216]

​@christyli8016CLEARLY, gravity AND ELECTROMAGNETISM/energy are linked AND BALANCED opposites (ON BALANCE); as the stars AND PLANETS are POINTS in the night sky. Consider TIME AND time dilation ON BALANCE, AS WHAT IS E=MC2 is taken directly from F=ma; AS the rotation of WHAT IS THE MOON matches the revolution; AS ELECTROMAGNETISM/energy is CLEARLY AND NECESSARILY proven to be gravity (ON/IN BALANCE); AS c squared CLEARLY AND NECESSARILY represents a dimension of SPACE ON BALANCE; AS TIME is NECESSARILY possible/potential AND actual ON/IN BALANCE. By Frank Martin DiMeglio

[@RS250Squid]

I liked the video at the start for the simple reason that the guy expressed a hope that he'd earned a like. It's a rare, and pleasing change from every other youtuber who spams you for ten seconds demanding likes.

[@JohnJones-tx6rt]

@@RS250Squid Right from the start he didn't know whether a black hole has size or not so he used the empty platitude "infinitely small" which could be either or none.

[@astrumspace]

The supercut of the Black Holes series! All the episodes were written in a way that this supercut could happen once the series was over. I hope it works and it feels like a seamless, epic Astrum episode :)

[@i-am-evil-morty6710]

love you bro!!!

[@wingflanagan]

Yay! Welcomed and appreciated!

[@insane7718]

You commented Very information

[@chriskelly6574]

Sir, in the words of my generation: Dude, you rock!

[@BlackHattie]

Oh. It does feel like it. I hope for more. You are great.

[@morris0429]

Been a longtime fan. You’re what makes youtube great. Thank you!

[@astrumspace]

Thank you so much and for sticking around!

[@sausage6984]

@@astrumspace Here's an idea. Perhaps the action of a black hole is like a tampoline the mass forces the tampoline to it's farthest point. In a black hole perhaps time can never get to absolute zero. The fabric of space like a tampoline maybe elastic. So in a nutshell, perhaps many of black holes have already exploded but the time dialation means the result of the explotion can only be seen in billions of years... from our perspective. What do you think?

[@itsamemario_yahoo]

@@sausage6984 insane, but also really realistic. Could be possible indeed

[@andrew24601]

I watch a LOT of space videos, and I’ve seen a lot of videos about black holes. I think this one has gone the most in-depth that I’ve seen without being an actual university lecture. Love it!!

[@ant_heart]

5:24 -“light can no longer leave, so there’s only darkness” - such an odd thought. Darkness or blackness is always taught to be the absence of light. However, here it’s the confinement of light.

[@TayWoode]

You’ll see all the trapped light and it’ll be too bright when you cross the event horizon as it can’t get out Like pouring water in a well, it’s there but you won’t see it until you get really close and look over the edge

[@ianyboo]

You and Isaac Arthur are the only two KZbin creators that have me gleefully watching hours and hours of content while everybody else is worried that their 3-minute video might start to bore people lol. Well done! Thank you for trusting your audience to have the attention span to match your amazing videos!

[@sonic4331]

You should check out John Michael Godier 🤞🏽 his videos are usually ~20 minutes, but I bet you’d like them if you like these space vids

[@MattHanr]

All hail JMG, the king. If you want something just like this check out Cool Worlds.

[@jonbayuga3238]

Check out SEA.

[@saraschneider5797]

check out the history of the universe; that’s my favorite channel right now!

[@varsityathlete9927]

Anton Petrov channel too.

[@lordyharim466]

Physics videos trying not to give people existential crisises challenge (impossible)

[@bloodmoney88]

stupid people cannot understand you.

[@cyrileo]

"Impossible tasks make for the best challenges - even for physics videos." 🤔

[@PfizerBioNTech5G]

never had one, but I admit these topics always fascinated me despite not being able to understand it properly

[@hyliadreamer]

"Crises", not "crisises".

[@lsswappedcessna]

just makes me wanna explore space smh

[@denissavgir2881]

Your voice sounds like youre constantly smiling

[@TayWoode]

So long as it’s not the tiktok American girl voice that sounds like she’s so annoyingly cheerful

[@buggalo]

I am so grateful for these fantastic videos. You can break down incredibly complex, mind-blowing topics into bite size pieces, and put those pieces back together to make the bigger picture. and to top it off, you make it all not only cohesive but genuinely interesting!! beautiful work. thank you for making space facts so accessible to people like me. :)

[@monasty187]

I am so attracted to space stuff but have to admit it’s always pretty complicated to get a realistic grasp on the information however it’s still interesting even though I don’t really understand it. I have seen countless videos on black holes and in your first 5 minutes you were able to present the information in such a way that I feel I finally have a good understanding of the basic situation now! Thank you so much you definitely have my like, follow, and share! Can’t wait to see the rest of the video

[@yourdreams2440]

Nobody has a realistic grasp on the information. The more you know the more confusing it gets. No one has anything close to definitive answers for this stuff. Enjoy the ride! It's at least extremely interesting.

[@russelpattison124]

@@yourdreams2440 for real though the more I feel like I'm starting to understand some of these concepts the more I feel that it makes no sense and that reality breaks it's own rules on a whim

[@kamakaziozzie3038]

Very few humans have the intellect to grasp these concepts. Humanity is almost to the point where our computers will be able to crunch the numbers that will explain much of quantum mechanics

[@rickyparry7472]

Everything is on such a mind blowing scale it's so hard to get my head around it but now and then I feel like grasp it slightly

[@djuanbenjamin9149]

It’s probably a simulation.

[@friedpicklezzz]

Your work is phenomenal, monumental and important. So much better than what commercial cable channels were pushing out not too long ago. Where were you, dear teacher, when I grew up? You bridge the KZbin audience with very complex topics. Even if 30% is understood on an average, that’s an amazing feat considering the abstract concepts discussed.

[@donaldwellman7516]

Hogo

[@officialkam7892]

Thank you my child, Your spiritual being is a cockroach.

[@varsityathlete9927]

the problem with this type on content on tv, it assumes the audience is new to this type of subject so you get the same stuff repeated show after show, and it rarely brings updates into it. The other problem is they are typically swallow and have to work as if the audience is new to the subject. channels like this can put more detail and take the subjects further. i'd recommend a lot more channels, like Anton Petrov who covers nearly daily updates with science and research.

[@hayleyxyz]

@@varsityathlete9927 They are also tied into strict time limits, and have to work around ad breaks, and have to consider people tuning in halfway through, or people who have not seen previous episodes. The KZbin format has been incredibly liberating for educational content.

[@varsityathlete9927]

@@hayleyxyz all good points.

[@joannecunliffe8067]

Alex, your documentaries are amazing - easily as good as BBC Horizon, Equinox or similar series. You should have far more visibility even on TV maybe. I work in IT but am an amateur astronomer and love science documentaries about cosmology, particle physics or similar things. I always scan your channel for new things to watch 🥰

[@Paper-lj7et]

I'm taking a year 1 astronomy course because I loved everything in these documentaries (and other youtube documentaries) and I have yet to encounter anything that I haven't leard from these documentaries yet. It's pretty cool that these free documentaries are more complete than the expensive course I'm taking.

[@rav8149]

Great. I was feeling that the concepts covered in the video would also apart from being in astronomy, extend into Quantum mEchanics and General Relativity

[@masterluc]

This is by far the best explanaition of black holes i have seen. I'm not a scientist though. There is one small typo in the magnified quote of the Hawking "letter", where the "-6" would have to be superscript, as it means an exponent of 10.

[@thomass.586]

I'm always amazed by the quality of your content, it's just a pleasure to watch despite the highly complex topics. Btw congratulations to Anton Zeilinger et al. for being awarded the Nobel Prize in Physics 2022 for their contributions to quantum theory!

[@chriskelly6574]

I too prefer scientists with class over confused apes with tinfoil hats and a dodgy compass.

[@JB52520]

​@@chriskelly6574 The implication is that there are only two options. I'd like to think I'm not an ape, but this tinfoil hat is great for blocking CIA mind control.

[@joebowl8315]

Only seeing two options means you are the ape you see others as. Lol.

[@chriskelly6574]

@@JB52520 I am human and harbour many biased but I insist we are all of us apes well, at least those of us whom can use digital watches, rolls of tinfoil and such. There are always more options it's just that people, nowadays, refuse to use spectacular language infected with style and panache; we are far too serious for that now. How heavy my heart is at the strength to which we hold on to the bitter things, the polarizing things. How fast we lash with hate that I can not but help try - to be an awkward flower in a sea of wet kelp...oops, I'm sorry. I work long hours at things I dislike very much this is all just a coping mechanism. I don't mean your wet kelp...I think my roommate is having that for dinner....

[@jensphiliphohmann1876]

@@JB52520 We are apes anyway, kladistically speaking. Apes with very special skills, of course.

[@Fretless99]

I've just discovered this channel, and I love it!Thank you so much for posting such wonderful content, I think you're really quite brilliant,and an excellent science educator.Thank you so much

[@Hokay01]

You are the first that’s been able to explain these theory’s in a way I am able to “begin comprehension”. Very well done and your examples are great! Thank you very much!!!

[@ccmcgaugh]

Thank you for taking time to create this series! Excellent all around....content, graphics... very articulate, easy to understand, adding a bit of humor. The best of any similar I've seen yet! 👍😜👍

[@itisimatadvc]

By far the best, most informative black hole documentary I've seen. It goes into way more depth than so many of the others. But it does so in terms we can all understand 👍

[@godhand73]

Amazing series. I loved your explanations. They're quite simple and easy to understand. Keep up the great work!

[@jck8888]

I have lost count on how many times I have watched and also only listened to it when its time to sleep. You should do a in-depth video on Multiverse theories.Thank you!

[@steadfastwolf2159]

what I learned from 1 hour of this is that black holes are effectively a giant battery that are also incredibly dangerous to tap into.

[@DrJackJeckyl]

Not even salt can escape!

[@Xogroroth666]

It cannot be tapped into. For a plethora of reasons.

[@idontwantahandlethough]

@@Xogroroth666 this is a science channel sir. Plz stop acting like your faith that it's impossible means diddlysquat. It doesn't mean anything. All we know is that it's obviously currently impossible. Is it physically impossible regardless of understanding, time, and resource constraints? Nobody on earth knows the answer to that question (with any real certainty). Unless you are not from earth, then you do not know either. You could add "according to our current understanding of the physics" and that would make it more accurate, but even then I'm not sure that's actually true... and I don't think you do either ;) (if you *are* from another star system, well then.. greetings traveler, welcome to Earth! I hope you come to enjoy living here 🤗)

[@Xogroroth666]

@@idontwantahandlethough Oh, please, do tell me how to overcome all the obstacles, mr science?

[@Xogroroth666]

@@idontwantahandlethough My reaction was to the poster above, for the record.

[@tangodman]

This has to be the most comprehensive and detailed explanation of Black Hole and its properties anywhere in a single video. Enjoyed every single bit of it, even though it will require basic understanding of many concepts of Physics. You have cleared many of my doubts. Exceptional video and keep making such top-quality content specially in these 1 hour long formats.

[@johnkean6852]

No such thing as a black hole don't be fooled.

[@Aegis23]

@@johnkean6852 not sure if you are that ignorant or just a troll.

[@hollowmass738]

did you know black holes are so dense not even light can escape :^)

[@PaulWillisJr]

This is one of the most digestible and followable simplified explanations of the foundational principles of QFT I've ever heard

[@Yongle96]

the best divulgative (yet accurate and rigorous) explanation of black holes i've watched on youtube so far

[@jhaz89]

Another great video. Appreciate it, Alex. Love the 4K 60 fps. Will donate more in the future and hopefully this comment gets others to throw you a few bucks.

[@astrumspace]

Thank you so much!

[@iamgroot4080]

This is a perfect example of amazing video! You have explained many difficult topics in a very simple way. Great job!

[@SuperUltimateLP]

You are really skilled at making difficult to grasp topics really digestible to the lay person! Thank you!

[@cyrileo]

👍 Great insight! 😊

[@leonorperpetuo8479]

I admire people than can explain what happens in the universe and this was the first video i watched that explained it better. I truly love this kind of things and i still have so many questions even after this video maybe even more than i had before. I definitely love it ❤❤

[@mekman]

Wow, that was epic! A fascinating deep-dive into the mind-bending physics involved in black holes. Thanks bunches for doing what you do.

[@johnkean6852]

Star Trek science ie phantasmagorical / fiction.

[@PittsPics]

Watched it all, amazing content that I hope you know we all appreciate making it available for us.

[@musicbro8225]

Ok, it's weird; I love your voice because it talks about information that has a footprint in my soul where it fits, which revives the wonder that used to be there as a child. So when you speak with such clarity, honesty and respect for that knowledge, it feels like you have that respect for my soul and that is pretty amazing!

[@davycard760]

This is without a doubt my favorite videos on black holes, especially because it has accurate closed captioning! Just wanted to say thanks for making your videos accessible :)

[@4X4NAV]

Even though I’ve already seen the individual episodes, I am still amazed at the effort and quality you put into making these. One thing I wish was explained in more detail was the section on Hawking Radiation, where you explained that it is usually depicted at the event horizon, this isn’t the case. However you didn’t explain WHY it wasn’t the case and how some manages to escape the other when outside? Thank you so much for the videos!

[@marcovallejo3]

Hey, Alex, not sure if you've already answered this question, but, have you already considered doing a series on the different Soviet missions and programs? I recently learned about Soviet missions to Venus and the Buran program, and it blew my mind! It'd be great of you consider it. Thanks for all the great content.

[@JackDenn]

“I hope that at end of this video to have earned your subscription.” That was the kindest way to get a new subscriber. Can’t wait to learn new info about space from you. Thank you for being happy about what you do and teaching us so much at the same time.

[@jeffrogers9312]

Without a doubt one of the best and easy to comprehend postings on the subject of Black Holes and tougher topic of Space Time dimensions. Nice job!

[@RingoBars]

Incredibly well done and brilliantly simplified explanations + thought process of this content. I’m an avid watcher/reader of science & space news/explainers, and this is genuinely one of the most (if not THE most) well put-together pieces on black holes I’ve seen. Really great work. Been a subscriber for awhile and just wanted to say you’ve really hit your stride! Enormously impressed - thank you for the content!

[@chriscohoon8688]

Wholeheartedly agree with this opinion. As a layman I expect some science to be inexplicable and I deeply appreciate presenters not grinding the knowledge to digestible pablum. Some ideas require further investment in study to digest. This was a really good balance and whets the intellectual appetite.

[@markbooth9147]

Solid effort

[@Talon0524]

You have such a great voice narrating describing these videos. I love watching these videos to wind down my day and relax watching the universe being explained by Alex. Keep up the great work. ❤

[@sabbracadabra8367]

I hate it

[@FirstLast-ii5cp]

Excellent! 👍🏻This video is one of the best on KZbin - brilliant all the way through‼ For novices all the way up to Physicists, this presentation throughly covers & breaks down almost all of the bizarre aspects of Black Holes, in such a captivating way.

[@pjwright77]

What a great way to explain a complicated subject the metaphors make perfect sense & not overused, anyone could watch this video and get a good grasp on the physicis , but it still has the more seasoned folks like myself (applied science post grad) keenly intested , it just rolls into the brain nicley, this would be a great one for the kids learning science too, well done :)

[@Baldevi]

This is an amazing SuperCut! It is quite seamless, Alex, you've made a wonderful program here, with so much information to enlighten anyone about Black Holes and their attendant parts, and even some better understanding of physics and how the world we are experiencing in Relativity works. I will definitely share this with friends who often have questions for me as the Physics Fan of the group. I also am fascinated by weather, mainly tornadoes, which believe it or not, we really do not know as much about a is assumed. Spinning things in nature still hold mysteries for the Human Mind and Imagination to reveal! Black Holes, the Great Red Spot, Saturn's Hexagon, Tornadoes on Earth and Mars, spinning away while we do not know how or why they are doing what they do. I am loving this Supercut, but wanted to gush a bit, and it is not even completed yet! This is such a fascinating watch!

[@mahelaniarektbb]

I watched the originals and can tell you that you cut them together so well. Had you not included text with the episode number, I would have thought you made another video about black holes haha!

[@glentorn5362]

The radical time displacement at or approaching an event horizon is proving to be a challenge for theoretical physics.

[@frankykomeau2803]

Agreed, for sure

[@cyrileo]

👍😊 That's fascinating! It's an exciting time for theoretical physics!

[@jackdavis3918]

I think that is this the best video of yours that I have watched. it was so good bro even for being an hour long.

[@taloweryus]

I always enjoy your content. It's clear and presented in a way that avoids the "gee wiz" tone of so many science channels. Yet, I don't feel like you're talking down to me or that I need a degree in physics to understand you. This was an excellent series on black holes. Thank you for putting it together. I can't wait for your next video!

[@cyrileo]

Nicely said, thanks for the kind words! 🙏 Also, looking forward to the next video too 🤩

[@ElSolCelta]

The best video/documentary I've ever seen of black holes.

[@kft4764]

So many good explanations in this video. Probably the easiest to understand rundown on quantum field theory I've seen to date.

[@user-px7kx2gp1b]

Can we just appreciate the beauty in 3:06? Like, understanding each layer of an exploding supernova is awesome.

[@Cannabinova]

My favorite KZbinrs are uploading long-format today, and I couldn't be happier.

[@JonPerson]

Thanks so much for the video! The part at 7:37 blew my mind because I had to idea of the true scale of M87's black hole; so immensely larger than I originally thought.

[@Mustkillmachine]

I love how this video explains everything so that it's easy to understand it was awesome to watch I learned a lot thank you

[@mj6962]

Amazing content ALWAYS. And thank you for noting that the graphics are mostly CG.

[@AshleySmith2-lo7oq]

This is, by far, the best explanation of these cosmic concepts I have ever come across. I don't even think this is the first time I have watched this video, but for the first time I am, so far (19:37) understanding it - I think! Certainly, I feel I have a better grasp on these mind boggling ideas than ever before. This channel is incredible! BTW I am not a physicist, I didn't even study physics past GCSE level. I just find it fscinating in my middle age.

[@JohnJones-tx6rt]

Explain "infinitely small" (his words). Is it something with size, no size, or neither? It's a stupid phrase. Also his word "bounce", that was stupid too. Does he actually know what he is talking about?

[@alexcastro7339]

Alex, you are brilliant. I can't stress enough how good your presentations are to the layman, amateur astronomer.... Your videos are a work of art, the excellent footage you obtain and the sublime editing., coupled with your interesting and informative plain language narrative... Perfection. 👽👽👽

[@goshbaby8531]

U explained him so perfectly frr

[@azium3262]

Bravo! What a beautiful documentary! Love the full length format.

[@siskiyoucrest]

Hey! Thanks so much for that layperson description of quantum fields! I found it so incredibly helpful. Great writing,

[@mikem.s.1183]

Excellent video. As a Physicist myself, I can only be grateful by the thought process that led to it.

[@jeffmac9642]

There is no such thing as black holes. They are spheres like earth with a surface. Obviously if uranium is the heaviest element in nature on earth , gravity can create something more intense in a dying super giant . Obviously it's too far away to reach such objects and Obviously you couldn't retrieve anything from its surface.

[@johnkean6852]

Physicists should stop lying to people.

[@Aegis23]

@@johnkean6852 oh, and 6ou hold the supreme truth? Phahahah...

[@noninoni9962]

Thanks for making this a bit easier to understand... Although, a lot of this continues to make my brain spin in a fog, your explanations has helped me to at least grasp part of the concepts -- even if they are just theories.

[@darkaquatus]

Take out the idea of a singularity and an infinitely dense and small object and things will get way less complicated. As we know, singularities aren't real and they do not exist. As a matter of fact, they cannot exist. Why? Because infinities cannot exist in reality. Theories that rely on the existence of infinities are always deemed too simple and in need of review and revision, because it clearly did not take everything into account. The reason we end up with infinities when calculating imploding stars is not because that's how reality operates, but it's simply because our current understanding of reality is incomplete. General relativity breaks down at a quantum scale, while quantum field theory does not fully incorporate gravitational forces. So when we're trying to calculate an imploding star with an immense gravitational pull at a quantum level, we simply lack the tools.

[@3dgar7eandro]

Really Thankful that you uploaded this video cause it touch with great detail the most interesting concept of the last 💯 years on physics, from 'Hawking Radiation' to the Casimir effect and the 'Heisemberg Uncertainty principle' 😁👏👏

[@thelump7622]

This is amazing, you learn a lot more than just stuff about black holes! Cheers

[@AnthonyGoodley]

26:56 "Space tells matter how to move. Matter tells Space how to curve." - John Wheeler Such a profound quote that helps to make clear such a complicated subject such as Black Holes.

[@MeesterG]

Amazing quality! A very nice supercut indeed! I was a bit surprised when you said: 'After all, this is just a theory'. In my opinion it feeds into the misunderstanding of the word theory. It was around the 30:00 minute mark :)

[@vazap8662]

Beautiful! Fantastic video, as always coming from Astrum.. 👏

[@nathanhasegawa4937]

Infinitely interesting! What an exciting time to be into cosmology, astronomy, astrophysics, etc. It seems like there a library worth of new research published and ready for even popular consumption (dumbed down or simplified) every week!

[@johnkean6852]

No research just fantasy. YOU could have a better theory in YOUR brain.

[@oobrocks]

Who agrees: this channel never disappoints 😊

[@mj6312]

I can say with absolute confidence that you're one of the best channels KZbin has, if not the best. Thank you for your efforts as always, these videos are greatly appreciated, I've learned a lot.

[@pinnnkyton]

This is a pretty basic and not all that accurate, video. If youre interested in actually learning the facts (as we know them) about the cosmos i recommend maybe starting with Sean Carroll

[@JohnD6280]

I've been watching uTube videos for years and rarely sat throughout the whole video without getting up to walk around (seat is too worn to sit on for long time) but i've sat the whole 1 hour and 5 minutes of this video just to fill my brain with this enchanting phenomenon. My out most fascination; The Nothing.

[@derempunkt8067]

Wow, thanks for your work!! High Quality Information, explained in an easy way. Greetinx from Germany

[@niels7235]

I didn't even watch the video yet but I want more longer videos!!! I am hyped

[@angledmusasabi]

Yeeeeeeessssss this is precisely what I needed tonight. Thank you!

[@leefulford1397]

What an incredibly high quality video on such an interesting topic. Well done sir! Mindblowing!

[@koundinyapss10]

Very detailed yet easy to understand video. Wonderful job.

[@tetradb_]

Such a great and thorough video! Really enjoyed it!

[@JohnStopman]

Same ❤

[@jameswilkes451]

That idea of the photon being a wave propagating through the quantum field blew my mind... totally changed the way I view everything!

[@AsteroSSB]

Alex, you haven't just earn my like and subscription, but a sheer admiration. You are a national and a treasure of humanity mate. Live long and prosper!

[@Someone-km3mx]

This video was beautiful and so easily comprehendible too- I enjoyed this very much

[@brown2889]

OH, Wow! Hands down the very best description I have ever heard. I’ll be thinking about this for awhile. We need more X-ray detectors out there, more powerful. Sofia the telescope was heading in the right direction too. It could see magnetic fields on a galactic scale. Sharpen that tool!🙂

[@Screamo_RC]

Black holes have to be my favorite thing in space. They're so terrifying and mystical. Powerful and unbias. Anton has a video about vortex structures on them too. They're so neat.

[@TheSd1cko]

Ye, I love em. Got one as a pet.

[@JENKEM1000]

Notoriously bad tippers and always give our servers a hard time

[@dt5072]

Lol

[@jaysmith2858]

@@JENKEM1000 They really suck.

[@DennisSantos]

The Most Comprehensive video about black holes ever, I've seen. Well done!

[@jeschinstad]

Hey, I really enjoyed this. I usually put these types of videos on a night to help me fall asleep, but I'm still awake and not even complaining. :)

[@CursedImagesEveryday]

I have a theory about black holes: If you go close to the event horizont of a BH time slows down and eventually stops and if you go further, instead of going inside, the entire black hole starts to shrink not allowing you to cross the event horizont. Why? There are two possibilities why. First is the hawking radiation that shrinks the BH in an obscenely long amount of time. But since time passes normaly for you as a guy "stoped" at the event horizont for the outside observer, it wouldn't take long from your perspective. This means you can leave the BH in a very distant future once the BH stops existing due to Hawking radiation decay. The second possibility is that once you are at the event horizont the time actually starts to go backwards which means you witness the black hole shrinking due to watching it go backwards in time and losing all the mass it had collected over the eons. This means it's impossible to use it to travel into the past because you will get destroyed by a supernova imploding on top of you...

[@Rationalmethod995]

I like your first theory but i think its more likely it gets smaller and smaller but it never goes away fully and you could never catch it... Eventually the universe just collapses due to old age or whatever and then your dealing with that too

[@ibelieveingaming3562]

It doesn't "appear to get smaller". Assuming it is a supermassive black hole, the moment you cross the event horizon nothing would appear to happen, however at this point you are trapped. The apparent horizon would begin to rise, eclipsing your vision and becoming concave, like falling into an actual hole. Then the night sky would coalesce into a single bright point above your head, and then appear to begin receding from you. You now live in blackness. Until you eventually get ripped apart by tidal forces.

[@wulfheort8021]

Please, get more informed on topics such as these before coming up with theories. This is not even anywhere close to how time dilation works and what it is.

[@jettmthebluedragon]

Well the issue what you say as just like spin this video says black holes Are NOT made with anything so how can some hawking radiation form if theirs black hole 🧐? Within the first seconds it clearly stares black holes are NOT made with anything but they have gravity but that’s misleading 😐in order for gravity to exist you Need size shape mass and composition 😐and unfortunately space and time have no gravity that’s because NOTHING creates space or time the way the universe works is like magnets if you put magnets on a table no matter how many times you take them apart and put them together the table does NOT change 😐that Means black holes may or don’t exist that also means space and time do NOT warp or change 😐

[@wulfheort8021]

@@jettmthebluedragon What nonsense is that? The video never said black holes are made from nothing.

[@elleni-41]

Ur channel is phenomenal alex.. Very informative videos..👍👌💞💞

[@mydogbruno2]

Probably the best video I ve watched tying together black holes, gravity, relativity, faster than light movement, equivalence, momentum, hawking s radiation, and accretion disk theories. Light on time discussion but you can find a ton of videos on time dilation knock yourself out.

[@3g0st]

Wow, your channel is a treat, I am grateful.

[@jenesisjones6706]

I understood about 5% of that, but it was fascinating!

[@christinebethencourt6197]

Bravo for your work and research you share with us , Universe is just fascinating ✨✨✨✨

[@cliftonsargent1572]

LEMMiNO was always my go to for space info, you have taken that position sir. I freaking love your channel

[@D_D2016]

Arguably one of the best videos on Universe that I have come across till date

[@i-am-evil-morty6710]

1 HR ASTRUM??? YES PLEASE

[@owlredshift]

You really, really are just slaying this, man. I mean shredding the gnar out of the topic. Killin it, in the best ways. Please keep going! Thank you for your efforts! Outstanding!

[@spanqueluv9er]

^Shredding the gnar out of it? Put your mom’s phone down, child.🤡🤦‍♂️

[@drit84]

Absolutely great, subscribed now and thank you!

[@cadenwhittaker2894]

I love how astrum always has an analogy for everything it really simplifies everything

[@peanutnutter1]

This video should be given to new entrants to university astrophysics courses and probably theoretical physics courses. Best explanation I've seen for particles in quantum fields. Great work!

[@mxb2432]

Should be introduced even earlier than Uni, imo. If the education system wasnt as bad as it is atm. (Here in Canada)

[@CultureIsKey]

Can I ask where you get your info? You seem to put everything together so intrinsically. Trying to imagine how you accomplish uploading these quality videos is hard to imagine, with the specific animations. Everything seems to evolve so quickly, it’s hard to keep up on everything when sources are everywhere to find about something new that’s happened. Any recommendations for like a science hub or something?

[@dang4546]

Wow! Your best work and on another level. Good brotherhood.

[@TS-qd2uj]

A truly fascinating, amazing, and very well explained documentary on blacj holes. Thank you!