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

Lord Yharim
Lord Yharim

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

Vor Monat
Cyril
Cyril

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

Vor 10 Tage
POLICE STATE
POLICE STATE

stupid people cannot understand you.

Vor 23 Tage
SteadfastWolf
SteadfastWolf

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.

Vor Monat
Xogroroth666
Xogroroth666

@Will Baskin People then never accept such truth. We know nothing, when considering the Universe.

Vor Tag
Will Baskin
Will Baskin

@JenkemSuperfan but it’s fair to say we don’t know what we don’t know

Vor 2 Tage
Will Baskin
Will Baskin

@Xogroroth666 if you read his whole comment he agreed with you but expanded on your answer

Vor 2 Tage
Cyril
Cyril

Nice observation! While it's true that a lot of mass and energy can escape a black hole, it's not something we'd recommend trying. 😉

Vor 10 Tage
SCORPION FIRE
SCORPION FIRE

Ok Jr

Vor 15 Tage
Virtual Willis
Virtual Willis

You and Isaac Arthur are the only two YouTube 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!

Vor 3 Monate
Woody
Woody

SEA is also fantastic, probably the best, he talks a little faster and covers much more in the same amount of time.

Vor 2 Tage
peter lewis
peter lewis

@Scrub Chan The IPCC has to say that to get anything reported, do look up how politicized getting a statement from the IPCC is, then listen to what the actual scientists are telling them . Its way worse than the IPCC reports . Also look at all the backtracking the IPCC has to do as each `forcast ` hits worse case and worse case keeps getting worse consistently . Also look up all the things the IPCC wanted to include but was unable to reach `political consensus` then tell me i am incorrect .

Vor 11 Tage
Oleg Goldberg
Oleg Goldberg

You should get out more

Vor 11 Tage
Scrub Chan
Scrub Chan

@peter lewis the last statement is incorrect. The IPCC published a report that proved it's well in humanities capacity to reverse the damage, the only thing lacking is societal willpower and/or ignorance of scientific research

Vor 11 Tage
Micah Foley
Micah Foley

you might wanna check out anton petrov. his stuff is way less polished and documentarian, but his turnaround is so short he can put out space/science content that's super current. it's less about explaining the big concepts in depth and more about stuff that's actually happening right now, so you get to hear about all the stuff that might usually falls through the cracks in favor of the usual suspects. it's great especially if you love the minutae of discovery, theory, and experimentation. and he's got a cute accent and a soft voice that's great to fall asleep to lol

Vor Monat
Ant Tam
Ant Tam

I want to congratulate you. Yours is one of the few cosmology channels on YouTube 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!

Vor 2 Monate
Christopher Mullins
Christopher Mullins

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.

Vor 10 Tage
Raizur
Raizur

Thank you for this informative video!

Vor 2 Monate
Cyril
Cyril

Thanks for the appreciation! 🤗 We still have a long way to go before we explore this strange phenomenon fully. 🧐

Vor 10 Tage
nahshon cline
nahshon cline

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

Vor 3 Monate
Cyril
Cyril

Nicely done! 🤓 I'm glad you finally got the hang of it.

Vor 10 Tage
John Kean
John Kean

No such thing as black holes: don't be gullible

Vor 19 Tage
sonny
sonny

I always find that this channel and Brian Cox are the ones that really explain things in a way where the information doesn’t feel daunting, even though it is!

Vor 2 Monate
DJ Dorlis
DJ Dorlis

If you think you have a good understanding of it, it means as you don’t have a good understanding of it yet :-)

Vor 2 Monate
Djuan Benjamin
Djuan Benjamin

It’s probably a simulation.

Vor 2 Monate
Thiago Assumpção
Thiago Assumpção

Because of gravity time dialation according to outside observers no matter has ever or will ever fall in a black hole. Because of that current black holes do not have a singularity at the core and instead are formed of layers and layers of mass frozen in space time. Its debatable if it's possible to cross event horizon. Maybe all mass gets obliterated and released as energy instead.

Vor Monat
Cyril
Cyril

👍 Good question! It's still an area of ongoing research and debate.

Vor 10 Tage
Thiago Assumpção
Thiago Assumpção

@Baneslayer™ The observer I'm talking about is the physical therm. It doesn't mean you are actually seeing anything, its more of a reference frame. For example if you have two clocks side by side measuring the same time and throw one in black hole orbit it will slow down time and tick slower because of gravity time dilation. That is according to earth observers. According with an observer on black hole orbit time did not slow down for him and its the clock on earth that is speed up. The closer you get to the event horizon the slower the time passes according with outside observers, once you reach event horizon time stops completely. Only crossing observers can see clocks ticking inside a black hole but that can only happen if Hawking radiation is not real. If black holes emit radiation, all matter falling in the event horizon will be converted into radiation over trillions of years, "Crossing "observers would experience this in a fraction of a second and be instantly obliterated. I'm not the best person to explain this, If you want to know more about this look up on yt channel BPS Space Time.

Vor 19 Tage
Baneslayer™
Baneslayer™

What you are "observing" and what is a actually happening are two different things. You are confusing them in this case.

Vor 19 Tage
SiFi | Simplified Finance
SiFi | Simplified Finance

Great content!

Vor Monat
Cyril
Cyril

Great content! 🤗 Thanks for creating such an interesting video!

Vor 10 Tage
RingoBars
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!

Vor 3 Monate
Demon😈Boyz
Demon😈Boyz

If we could create a craft to get as far as our nearest black hole I wonder how close you could get to observe it without been pulled into the event horizon.?🇬🇧✌️

Vor Monat
Tibor Purzsas
Tibor Purzsas

That would depend on the speed of your craft ! The faster it goes, the nearer it can get without getting sucked in

Vor 27 Tage
I am Groot
I am Groot

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

Vor 2 Monate
PLASMATECH Studios
PLASMATECH Studios

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!

Vor 3 Monate
Anthony Goodley
Anthony Goodley

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.

Vor 12 Tage
Talon0524
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. ❤

Vor 3 Monate
sabbracadabra
sabbracadabra

I hate it

Vor 3 Monate
Dakin Maher
Dakin Maher

Great video. Thank you. I have interest in astrophysics and astronomy all my life. Idk if I'm paying more attention now but it seems I learned more about black holes in this video than I have ever learned. Wonderful.

Vor 3 Monate
Scenic
Scenic

This kinda turned into a rabbit hole in my mind and I had to get it out. Not an expert but this is all just based on what I think would happen and what sounds like it makes sense. So if it takes an infinite amount of time to enter a black hole, so much so that if you tried to enter, the entire universe goes through it's entire lifetime, how does a blackhole gain mass? If it's true, then any object that gets sucked into one would never reach the center in the universe's lifetime. Yet we see absolutely monstrous sized blackholes. Which had to have grown, unless they are from stars the size of the universe, which does not seem possible. Also, if a black hole is truly infinitly small, then you could never reach it to add mass to it either. My thinking is this. If you want to see for example an atom. You zoom in. We have electron microscopes that can see atoms. You can see the outline, and if you wanted to touch one, you simply have to move towards it a set distance. Now imagine a point infinitely small. You can zoom in forever but you will never see an outline because it's infinitely small. You want to touch it? (Metaphorically as you would die if you tried to) Well, how far do you move your finger towards it? Move your finger close to it, zoom in, and because it's infinitely small the space between your finger and the black hole seems to increase. Move it closer again, now you are almost touching it. But zoom in more, and once again you are far away from it. My point is this. Even if you were a foot away from a black hole, you would have to move an infinite distance to get to it, since it's infinitly small. Again this adds that a black hole cannot gain mass, as any matter that could possibly make it there, after traveling for quintillions to the quintillions to the quintillions to the quintillions of years, would never reach an infinitly small point, as it would have to travel an infinite distance. Basically all I am trying to say is that there is no possible way a black hole is an infinitely small point with an infinite density. Math may break down as you try to calculate how small it truly is, but that doesn't mean it's infinite. My theory is that whatever makes up matter, not protons and neutrons, but quarks, or whatever makes up quarks, or whatever makes up those, etc, down to the tiniest possible form of matter, is squished down to as close together as possible. Into an object with a finite size, and a finite density. This would mean a black hole can gain mass since objects can actually touch it, and add to the pile. But also it can't gain mass, or at least we will never observe a black hole gain mass, as it would take such a large amount of time to reach the center. And if hawking radiation is real, the black hole could fizzle away before the matter could actually get to the actual black hole. But now that I think about it, how can hawking radiation exist if these subatomic particles pop in, and part of it falls down to the black hole, and the other goes out as radiation? Ok I have just thought about it for a minute here and this is what I think. Hawking radiation could be a source of near infinite energy. Near infinite because nothing is infinite. It would be infinite for humans on a human scale. So hawking radiation is when 2 tiny subatomic particles pop into existence, one falls into a black hole and the other escapes it. We see the escaped particle as radiation, hawking radiation. Now the particle that falls into the black hole will eventually reach the center and annialate the equivalent mass. But that will take forever. It will only reach the center after the universe has come and gone. And probably many times that. So the black hole won't lose mass for quite some time, all the while thermal radiation is being spewed out of the black hole. We could use this for near infinite energy. We have a constant flow of heat, and time so long that humanity would likely be gone by the time it starts to lose mass. So I guess black holes do gain mass, and do lose mass, but for both to happen, the end of the universe must take place so there's enough time for stuff to fall. So now the question is how did some black holes get so massive the entire solar system could fit insite one many times over? It couldn't have been from eating things because it will not reach the center for a while. I guess if matter accumulated on the outskirts it could increase the gravational pull. Ok I am done thinking this over. My head hurts and I've been sat here for probably half an hour to an hour now. If you read all this I am sorry. But I hope your head hurts as much as mine does. REMEMBER, VERY IMPORTANT, I am not an expert. I am just some guy trying to use my tiny feeble human mind to comprehend the cosmos.I would love to hear your theories on everything.

Vor Monat
I am only me
I am only me

Nice thought, good read!

Vor 11 Tage
Number5ontheway
Number5ontheway

@impyboi pretty much all of them admit we don't know much about them outside of the fact that they're gravity is so strong not even massless particles like photons can't escape which is what we've seen from the recent photographs.

Vor 13 Tage
K X
K X

You’d be correct about the Hawking radiation being EXTREMELY efficient though. The only thing is how to extract it and also get enough of it to be useful:b smaller black holes more likely.

Vor 19 Tage
K X
K X

You’d be correct about the Hawking radiation being EXTREMELY efficient though. The only thing is how to extract it and also get enough of it to be useful:b smaller black holes more likely.

Vor 19 Tage
K X
K X

@John Kean seethe science denier

Vor 19 Tage
Noni Noni
Noni Noni

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.

Vor 3 Monate
Mike M.S.
Mike M.S.

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

Vor 3 Monate
John Kean
John Kean

Physicists should stop lying to people.

Vor 19 Tage
Text_kraoesp_01 on e_Gram
Text_kraoesp_01 on e_Gram

Congratulations 🎉🎉 Thanks for watching to my youtube channel! you have been short-listed among my winners🎁🎁🎁🎁 kindly text the name above to claim ✅✅✅.....

Vor 3 Monate
Jeff Mac
Jeff Mac

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.

Vor 3 Monate
Cal McGaugh
Cal McGaugh

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! 👍😜👍

Vor 3 Monate
Penthyn
Penthyn

What is nothing is my favorite question. I tend to ask people this question and then deny all their answers because they have just described the nothing and thus turned it into something. But one guy surprised me. He answered: Nothing is what blind sees. I don't know about you guys, but I think that this is the closest to nothing you can get.

Vor 3 Monate
Astrum
Astrum

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 :)

Vor 4 Monate
Texas Faggot
Texas Faggot

So, episodes made of black holes became such a gravitational factor that they emerged into one giant and massive episode of black holes. It created gravitational waves that were detected at LIGO.

Vor 22 Stunden
bob shaw
bob shaw

It’s great thank you, I love listing to space themed videos while going to sleep, it helps my insomnia

Vor 6 Tage
Caesar Avgvstvs Rodriguez Anaya
Caesar Avgvstvs Rodriguez Anaya

Alex ypr way of talking the universes marbles from a cientific view is so friendly Yes this large cut felt seemesly as if it were made as it is, i knew it was from shorts as ive seen s99me of the parts separately , thanks for all your work and effort for science divulgation

Vor 17 Tage
Marian Kowal
Marian Kowal

I don't understand how black hole can pull a light . It's not supposed to do that because light doesn't have a mass . It will make a sense only if black hole pull a eter in which can be propagated light .

Vor 18 Tage
JasonJason210
JasonJason210

Yeah I think they work very well. The only thing is a slight change in the tone of your voice but I mean that's fine.

Vor 21 Tag
Jon Person
Jon Person

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.

Vor 3 Monate
AkiraN
AkiraN

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.

Vor 25 Tage
Cyril
Cyril

Nice work. 😎👍

Vor 10 Tage
Christian Schimert
Christian Schimert

Absolute great video. Interesting and very well narrated and researched all the way through. Thank you!

Vor 3 Monate
Evolutionary Advantage
Evolutionary Advantage

So interesting. I often wish I had been smart enough to go into a field of physics, having a passion for it just isn’t enough.

Vor 20 Tage
Shirley Phlyx
Shirley Phlyx

Thank you for the wonderful video. It inspires me a hypothesis on a possible material mass that may exist that can affect space and not time.

Vor 2 Monate
Michael Wensley M.D.
Michael Wensley M.D.

Amazing video. Great editorial judgement in what to keep in, and on what topics to bypass! Great job. Loved it.

Vor 3 Monate
Brown
Brown

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!🙂

Vor 3 Monate
Michael Newman
Michael Newman

THANK YOU! I have been trying to understand how an infinitely dense "one dimensional" point outside of space-time can have "spin". Although I think it's hard to say that the actual black hole has spin, after watching this I think you can say that the black hole system (including the space-time outside influenced by the black hole) can have spin or angular momentum. I think the idea of a ring-shaped black hole looks like some kind of cheat or compromise but I guess it's a best-guess right?

Vor 3 Monate
K X
K X

Exactly, you’re asking the right questions. Here’s the solution: there is not crossing the event horizon because black holes are literal holes in reality. Everything is just above the event horizon. It would take infinite time to reach the event horizon, and even more than infinite to cross it therefore impossible.

Vor Monat
Morris Wang
Morris Wang

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

Vor 4 Monate
Astrum
Astrum

Thank you so much and for sticking around!

Vor 4 Monate
Just Me
Just Me

Great video. Other science channels seem to go the other way, shorter clips, entertaining ideas ("Startrek") so i am glad i find this: keeping it exciting with facts and good explanation. gonna watch it in cuts of 10-15 minutes!

Vor 3 Monate
Smøke
Smøke

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.

Vor 3 Monate
Jay Smith
Jay Smith

@Abu Ansar Al-Britani They really suck.

Vor 2 Monate
D T
D T

Lol

Vor 3 Monate
Abu Ansar Al-Britani
Abu Ansar Al-Britani

Notoriously bad tippers and always give our servers a hard time

Vor 3 Monate
S D
S D

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

Vor 3 Monate
Walde
Walde

That's the one thing about black holes that always blew my mind, the fact that you could technically see the entire lifetime of the universe in an instant. It's just such a difficult thing to wrap your head around

Vor 3 Monate
Thulyblu
Thulyblu

All while your head gets spaghettified and wraps around the black hole * mind literally blown *

Vor 6 Tage
Cyril
Cyril

Nice! It's mind-boggling 🤯.👍

Vor 10 Tage
MrRugbyloosehead
MrRugbyloosehead

Thank-you for this, as I've always found space and the Universe very interesting! Ever since I purchased a used copy of Carl Sagan's Cosmos , or Steven Hawking's book A Brief history of time, while I'm a layman as it were, I can still understand most things , until it gets too bogged down into quantum theory or string theory! but even then I do understand the basics! I think I'll check the rest of what you have to offer, again thank-you!

Vor 3 Monate
John Kean
John Kean

Hawking admitted most of his theories were utter twaddle before he died.

Vor 19 Tage
Thomas S.
Thomas S.

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!

Vor 4 Monate
chris kelly
chris kelly

@Cerulean Angel I have a bad habit of typing when tired. I usually only mix numbers and letters in algebra.

Vor 3 Monate
Cerulean Angel
Cerulean Angel

@chris kelly lost me at polar1z1ng th1ngs lul awkward flower 1n a sea of wet kelp do rem1nd me of elrond poetry tho

Vor 3 Monate
Cerulean Angel
Cerulean Angel

@J B or the fact that e1ther way 1ts just extreme ends of ethos one person must be r1ght wh1le the other must be wrong surely 1 mean surely r1ght? fk1ng hell 1f 1 know anyways

Vor 3 Monate
vacation time
vacation time

@chris kelly touch grass.

Vor 3 Monate
Jens Philip Höhmann
Jens Philip Höhmann

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

Vor 3 Monate
tango dman
tango dman

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.

Vor 2 Monate
John Kean
John Kean

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

Vor 19 Tage
Scott Fox
Scott Fox

Absolutely brilliant video! Explanations were better than I’ve ever heard. I’m subscribing to your channel my good man, I look forward to more!

Vor 3 Monate
Jean Vincent
Jean Vincent

Taking into account the relativistic slowing down of time when approaching the event horizon, falling towards the event horizon, one would see the entire universe life unfold, while at the same time the blackhole evaporates to Hawking's radiation. Therefore nothing can ever cross the event horizon. That means there is really nothing inside a blackhole below the event horizon. So there is no singularity at the center of the blackhole.

Vor 18 Tage
Marvel 101
Marvel 101

Thank You so much for your videos. Really educational for us peons that are interested in this sort of subject matter but are limited in our math and science backgrounds.

Vor 3 Monate
Jeroen De Cloe
Jeroen De Cloe

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 YouTube audience with very complex topics. Even if 30% is understood on an average, that’s an amazing feat considering the abstract concepts discussed.

Vor 4 Monate
vacation time
vacation time

@deepvybes I've not seen this video yet, its an hour and its on my watch list when i get time. so i can't attest to the depth. the title sounds interesting I'm assuming it is about the currently things that are unknown, were mistakes and new developments. sounds like its not worth the watch. i prefer channels like anton's where he covers new research. as for tv making money, these channels are also making money. 550,000, which is about average cpm is 1100 dollars considering this is a video that re-updates content not too bad. youtube is also a business for channels like this. over 1mil subs, constant uploads? this isn't a hobby.

Vor 3 Monate
deepvybes
deepvybes

@vacation time The stuff in this video is all basic Wiki page info, there's nothing you haven't heard before if it's not your first time hearing it. Aside from the fact he used a balerina instead of a figure skater (her poor toe must have blown to shreads). The problem with TV is that they don't want to put all of the info into one episode, they want to make money, make it a business, release something new in each episode to keep people watching, and do something more than read a wiki page.

Vor 3 Monate
vacation time
vacation time

@Excellent 8th RULE: If this is your first night at FIGHT CLUB, you HAVE to fight.

Vor 3 Monate
Excellent
Excellent

@vacation time The first rule of fight club is we don't talk about fight club. The second rule of fight club is we don't talk about fight club.

Vor 3 Monate
alexae1367
alexae1367

In the same darkness we were😂

Vor 3 Monate
itisimatadvc
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 👍

Vor 2 Monate
glentorn53
glentorn53

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

Vor Monat
Cyril
Cyril

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

Vor 10 Tage
Franky Komeau
Franky Komeau

Agreed, for sure

Vor Monat
deebznutz100
deebznutz100

I always wondered if sonic tests were ever used as an analog for light. I would like to know what other kinds of sonic tests were performed and what the results were. I've got a few I'd like to try myself.

Vor 3 Monate
Nathan Hasegawa
Nathan Hasegawa

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!

Vor Monat
John Kean
John Kean

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

Vor 19 Tage
mekman
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.

Vor 4 Monate
John Kean
John Kean

Star Trek science ie phantasmagorical / fiction.

Vor 19 Tage
Jurgis Saksons
Jurgis Saksons

Absolutely stunning video! Great job,Alex,i love it

Vor 3 Monate
Wesley Hobbs
Wesley Hobbs

And thats how Hawkins broke physics.

Vor Monat
Steven M
Steven M

@John Kean Do you have a specific source? I'd like to read that.

Vor 12 Tage
John Kean
John Kean

He admitted before he died most of his theories were impossible. No such thing as black holes.

Vor 19 Tage
KFT
KFT

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

Vor 13 Tage
Lord Vegan
Lord Vegan

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

Vor 3 Monate
JHaz
JHaz

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.

Vor 4 Monate
Astrum
Astrum

Thank you so much!

Vor 4 Monate
W Kelly
W Kelly

I might not understand everything but I like everything universe related. Thank you so much for a very interesting video!

Vor 3 Monate
henriqueacabral
henriqueacabral

This is by a mile the best video on black holes and, actually, quantum physics, out there

Vor 18 Tage
FJ5
FJ5

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

Vor Monat
Cyril
Cyril

👍 Great insight! 😊

Vor 10 Tage
abhijit chanda
abhijit chanda

You know, it’s strange but I can hear your smile in your voice. Your love for astronomy is so infectious. Keep up the amazing work.

Vor 3 Monate
Marco Mora
Marco Mora

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.

Vor 4 Monate
Niall Innes
Niall Innes

Im only 4 minutes in and I have subscribed. Your explanations and imagery to help are incredible. Black holes have to be the coolest things to ever exist

Vor 3 Monate
Rockin BoBokkin
Rockin BoBokkin

This is an excellent black hole presentation. Filled with fresh ideas and theories.

Vor 3 Monate
Lee Pendergraft
Lee Pendergraft

Thanks for your efforts and the quality of the content. Note however. Weight is not mass.

Vor 3 Monate
The Transporter
The Transporter

This is definitely amongst the best science channels on YouTube.

Vor 3 Monate
Nicole Stewart
Nicole Stewart

Discovering your videos tonight has been a real treat. So very well done. So very interesting. Thanks for making my night!

Vor 3 Monate
paul skillman
paul skillman

When was the last time anyone from Earth lived in a black hole?

Vor Monat
Cyril
Cyril

No, not yet! 🤠

Vor 10 Tage
Robert Myers
Robert Myers

This is so far, one of the best videos that I have seen on Black Holes yet!

Vor 2 Monate
Marc Rahn
Marc Rahn

hey, would you say we are in an "event horizon" already, seeing as the majority of even relatively near things expands away from us faster than we could ever travel?

Vor 2 Monate
Pitts Photography
Pitts Photography

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

Vor 4 Monate
Axle Axle.Australian.Patriot
Axle Axle.Australian.Patriot

Thank you :) > 32:00 This is pretty much what I have believed since I was 8 years old. It's not intuitive or easy to think about in a 4D universe, but we have to question which is real like looking at the image in a mirror. We think of up and down in and out as not being interchangeable at the same time, but I suspect the universe allows the infinite center and infinite exterior to be one and the same at the same instance and interchangeable. In this scenario, black holes make sense, and it points to universes existing within universes. But as we see by Hawkins radiation, a universe can slowly leak back into the inverse that contains it. In some sense this can make the universe infinite and yet still have a definable size. 43:21 I am often criticized for for talking about faster than light from an external perspective, as if that external perspective can never exist, yet here you are talking about light traveling faster than the speed of light. Why can people just accept that light, or probably more correctly Space/Time can travel faster than the speed of light. P.S. This warping of the frame of reference etc and Space/Time flipping states is why I suggest you would emerge from what would appear to be the center of the black hole, not indifferent to emerging from and inflationary period. Yes, weird I know.

Vor 20 Tage
Michael Macdonald
Michael Macdonald

@ 24:30 -- now make the box 10,000 km tall. Shine 2 lasers square with the floor - one near the top of the box, one near the bottom. If the deflection is the same for both lasers, then it is you who is accelerating. If the laser at your feet is deflected more, then you are in a gravity well. And this has nothing to do with mass inside the box. Same thing (almost) for angular velocity (with mass this time). The force on the mass near the floor will be greater than at the top. Your thoughts . . .

Vor Monat
Julia Vixen
Julia Vixen

Oh, I know the answer to this! It depends on whether or not the box is only being accelerated at the bottom, and the compressed walls of the box propagate the force up the 10,000 km to the top of the box, or whether or not the box is continuously accelerating with the exact same amount of acceleration at every single point along the 10,000 km long box. In the first case the two lasers deflect by the same amount, in the second case they will deflect by different amounts. I'd explain, but Im going to bed now. Lookup Rindler Coordinations and Born Rigid Motion.

Vor Monat
WolfgarTom
WolfgarTom

Great video! If it weren’t for the labels, I wouldn’t have even noticed that there were 6 episodes! Good show!

Vor 3 Monate
Mike Hidden
Mike Hidden

Impressive work and very useful information. Thanks.

Vor 22 Tage
Compassion and Wisdom
Compassion and Wisdom

Absolutely amazing I love ASTRUM! Easy to understand yet so comprehensive. Keep it up.

Vor 3 Monate
Kris Brewer
Kris Brewer

As a skeptic to a lot of the "so called" Sciences, I very much appreciate your approach and the way you relay the message. For example, I'm glad you said that Hawking Radiation is only a Theory. Thank you and this is why I subbed and will continue to listen. I find it extremely difficult to listen to someone who treats ALMOST any and every Theory as an absolute fact. I might not always agree, however, I can still hear the point being made if it is being made logically.

Vor 3 Monate
The lump
The lump

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

Vor 14 Tage
L. Bailey Jean
L. Bailey Jean

I've wondered if a black hole could be somewhat synonomous with an ocean gyre, where a confluence of moments/mass, or currents, come together.

Vor 3 Monate
Danny Powell
Danny Powell

I've never thought about light traveling ON something! This video helped me tremendously, thank you! New sub

Vor 3 Monate
Cyril
Cyril

👍 Thanks for the kind words! We're glad we could help you look at the universe in a different way.

Vor 10 Tage
Lucius Inspiration
Lucius Inspiration

"You cannot know the location and direction of a particle" , at some point , this will be proven wrong. When the people at that time reach this understanding , other questions about particle behavior will be explained as well.

Vor Tag
Kevin Maki
Kevin Maki

Cool video. It helped reinforce my own thoughts on the universe.

Vor 2 Monate
Ayden Lancaster
Ayden Lancaster

This is an easily digestible video I love it!

Vor 15 Tage
Lukas Drechsel-Burkhard
Lukas Drechsel-Burkhard

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.

Vor 4 Monate
titou1again
titou1again

Very detailed video! I really appreciated it. Thank you for that good work

Vor 3 Monate
FreeHomeBrew
FreeHomeBrew

I'd long thought the jets were the result of magnetic forces and it's interesting that idea occurring here as well.

Vor 3 Monate
Michael Edwards
Michael Edwards

I love these videos. I instantly feel larger for having watched them.

Vor 2 Monate
sai sumanth koundinya
sai sumanth koundinya

Very detailed yet easy to understand video. Wonderful job.

Vor 5 Tage
George Will
George Will

Excellent video and explanation of things, thank you.

Vor 3 Monate
Golden Mantra
Golden Mantra

I love the graphic where you have a light beam represented as perpendicular magnetic and electric fields - the idea being that the expansion/contraction of one leads to the contraction/expansion of the other. But, you're 90 degrees out of phase. Think about it.🤔

Vor 11 Tage
Ty Biedermann
Ty Biedermann

Do you ever (while walking in a straight line) imagine that you are stationary and the Earth is actually rolling beneath your feet like an acrobat upon a giant ball? 🧐

Vor Monat
Raydeus
Raydeus

14:36 I have a question, it's about particles "appearing and disappearing" in and out of existence. I just can't believe in things just spontaneously popping in and out of existence. Would it be possible that those particles are just traveling through a higher dimension while they "disappear", only to "reappear" once their orbit takes them back through our dimension? I see it like this: Imagine you were observing a 2 dimensional universe, if a particle's orbit through space/time was perfectly aligned with the 2D plane then you could observe the entire thing from within the 2D space. However if the orbit was just slightly out of line then the orbit would take the particle outside the 2D plane, which to a 2D observer would look as if the particle popped in and out of existence. Meanwhile a 3D observer would be able to see the entire orbit. So, could it be that particles simply aren't perfectly aligned with 3D space and as such move through a higher plane in their orbit, thus seemingly appearing and disappearing from 3D space?

Vor 22 Tage
Cyril
Cyril

Interesting thought! 🤔 Seems plausible but only more research could tell for sure.

Vor 10 Tage
Gertjan Eisink
Gertjan Eisink

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 :)

Vor 4 Monate
Barry Fensom
Barry Fensom

Wow, I watched a video about how electrons don't spin but have angular momentum. I didn't understand it until I watched this video, even though this video is about gravity. Now I think I understand it slightly better. So, does curvature also cause the angular momentum of electron "spin" as well?

Vor 21 Tag
Geroff Milan
Geroff Milan

10:16 yes yes yes! I have often asked this exact question, and a friend asked the same some months back. Thanks for taking this one on! 🙏

Vor 3 Monate
iki cove
iki cove

As always. a very well-done video.

Vor 3 Monate
Tzisorey Tigerwuf
Tzisorey Tigerwuf

Someone once showed me a video that likened the spacetime inside the event horizon of a black hole to the space-time kf the universe itself. I question how far the analogy can go - but if it goes far enough.... is there an analog of Hawking Radiation outside our universe?

Vor 2 Monate
Tim Lowery
Tim Lowery

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!

Vor 3 Monate
Cyril
Cyril

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

Vor 10 Tage
Uthael Kileanea
Uthael Kileanea

This is the first time I'm falling asleep to something I consider really interesting. Well made, sir... Well made.

Vor 3 Monate
Ash Moore
Ash Moore

The biggest question about Hawking radiation is: If virtual particles appear and cancel each other out in deep space. What makes them appear? If the black hole energy makes Hawking radiation happen. If the resonance of light through deep space can cause this , then light being pulled into a black hole can as well, thus no energy is used by the black hole. It obtains part of the "virtual particle" and releases the other half into the known universe.

Vor 3 Monate
Wayne Francis
Wayne Francis

At 40:58 they present the concept of a photon sphere "In a zone just outside the event horizon there exists a point in space where if a photon enters it at just the right angle, it will enter a perfect orbit around the black hole in much the same way the moon perfectly orbits the Earth. This infinitesimally thin zone is known as the photon sphere," This part is correct though I'd not use the term "perfect orbit" "and given the number photons that have flown past black holes in all the millions of years they have existed, it is probably filled with photons." This is just wrong. Even in an idealised universe with only 1 photon and the black hole this orbit is not stable. The black hole radiating Hawking radiation would cause the photon to slowly spiral out as the black hole looses mass. In our universe it is even worse because the orbit of the photon is affected by so many other factors including a black hole gaining mass just from absorbing radiation from the CMBR. No photon could sit in that orbit. Perturbation would cause it to spiral in or out. I hate it when just blatantly wrong statements are made to try to drive home a point.

Vor Monat
А[V]ANT GARDE
А[V]ANT GARDE

@Steven Huang PBS spacetime is the literal worst when it comes to pop sci idealist immaterialist garbage, it consists entirely of all of those theories which are completely debased, the shining example of "Mathematics leading us astray". To think that its a "Deeper channel" is completely asinine

Vor 14 Tage
Steven Huang
Steven Huang

This is a reason I've unsubscribed. The channel is very pop sci and non-technical. Instead look to deeper channels like PBS Spacetime. Astrum has videos with lots of inaccuracies like this and are good only for surface level entertainment.

Vor 14 Tage
А[V]ANT GARDE
А[V]ANT GARDE

I dont see your point really. Space is Filled with photons in every direction to the brim - especially towards the cores of galaxies where so many blackholes reside. Here -- the photon spheres which forms - if it were to lose any photons, are INSTANTLY replaced by the next layer of photons waiting for an open spot. Thats literally what the black hole IS . The reason its invisible is because the photons just orbit it rather than reflecting or scaterring , they just loop around forever. A lot. Another thing. Just because its a photon sphere doesnt mean they touch other photons very often. You can fit a lot of fucking photons in a 1 km sphere man. At least a photon can likely survive in a closed loop orbit around a black star for "long enough", and are ejected out one by one over time in such a way that you basically wouldn be able to tell if a photon you observe came from a black hole or not. Its just a photon - it doesnt have some special "black hole touched" quality. All of the original baryons that were originally in the star that created the black hole can be crushed back down into pure photons inside the black hole. Over time, it can lose photons, it constantly gains new photons and loses them occasionally. No big deal. They dont simply fly away because the pressure of the current of photons moving towards the blackhole is like a river flowing in a definite direction -- Inward at an angle. One doesnt simply swim against the current without some reason and some force acting on it to do work and overcome the weight of the photons going towards the center.

Vor Monat
Carlos Augusto Lopes de Almeida
Carlos Augusto Lopes de Almeida

Superb writing and presentation. Even you're voice is endearingly quirky in its sophisticated way. Can't wait to hear some comedian's first Alex McColgan impression!

Vor 3 Monate
Gregg Weber
Gregg Weber

24:28 The acceleration due to gravity at the ceiling would be slightly less at the ceiling of the room sitting on Earth while the other would have the same "gravity" on the floor and ceiling.

Vor 3 Monate
Surya Hitam
Surya Hitam

First of all, the highest praise for this fascinating video. As an absolute non-expert (I'm an engineer, not a physicist) I feel your video has multiplied my qualitative understanding of black holes. A small constructive criticism: at around 51:30 your explanation of why it is difficult to fall into a black hole seems to have an internal inconsistency that might leave some people scratching their heads. You say that the hands of the ballerina stay at the same speed when she pulls her arms in, hence her body rotates more quickly, but when you talk about objects falling off-centre into a black hole you talk about them increasing their speed up to close to the speed of light. I get it that you didn't want to trouble your viewers with the details of angular momentum, but also note that you had no problem showing us the Hawking's radiation formula :-) and his paper, neither of which I had seen before, but found very interesting btw.

Vor 23 Tage
Shiboline M'Ress
Shiboline M'Ress

Novice layperson's question: How do non-rotating black holes form? Since stars rotate, wouldn't that momentum always be preserved if they become black holes?

Vor 2 Tage
Nuwan Balasooriya
Nuwan Balasooriya

Very informative... Interesting video... Excellent way of explaining things....

Vor Monat
Liquid Flames
Liquid Flames

I watched all these videos when they came out. It was a pleasure to rewatch them all like this. Black holes seem, to me at least, like a glitch in the universe; in reality. Like getting outside the playable boundaries in a video game or an error in a program that just breaks one button while the rest continues to work fine, black holes seem to be some kind of functioning error in the universe. It's like the universe popped into existence, all the rules were set by physics, all the forces of nature emerged, particles came into being, and everything was fine. There. That's a perfectly working universe. Enjoy. And then some cosmic speed runner or data miner comes along and, without breaking any of those rules or forces, causes the universe to do this strange thing that was never intended. "So, this universe runs on gravity and time, right? What if I put a whole bunch of that in one spot?" So, this cosmic hacker tinkers with the programming and discovers planets. "More," he says. And there's the first stars. "More." Now the stars get bigger and heavier. "More, more, more!" Suddenly that spot goes dark. The code of the universe breaks down and there's a spot that technically obeys the laws of the code but ...just doesn't make any sense. And even though this glitched spot now exists, the rest of the universe keeps functioning just fine around it. I need to stop before I write a whole novel.

Vor 4 Monate
K X
K X

There are no glitches in reality, there are only edges of reality, which cannot be crossed by definition because there’s nothing beyond reality. Black holes are literally holes in reality.

Vor Monat
420 Troll
420 Troll

they're what happens when god divides by zero.

Vor 3 Monate
The Double K
The Double K

I've always said that Black Holes are the real world result / consequence of dividing by zero, but your point of view is way better and more on point.

Vor 3 Monate
Pauline Fox
Pauline Fox

no, no, keep going

Vor 4 Monate
Bigguy2
Bigguy2

excellent comment, i've thought along the same lines for a while but never actually put it all together. enjoy your day!

Vor 4 Monate

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