Is the Universe a giant Black Hole?

A black hole is matter and/or light crammed into such a tiny volume that nothing can escape. But, shortly after the big bang, the observable universe was that small. How did it escape?! Brilliant for 20% off: brilliant.org/ScienceAsylum
Creator/Host: Nick Lucid
Writer: Nick Lucid
Copy Editor: Nick Lucid
Editor/Animator: Nick Lucid
________________________________
VIDEO ANNOTATIONS/CARDS
Black Holes are Inescapable:
• Why can't you escape a...
The Oldest Light in the UNIVERSE!
• Cosmic Microwave Backg...
________________________________
RELATED KZbin VIDEOS
Veritasium on Universe Misconceptions:
• Misconceptions About t...
PBS Space Time on Universe Edge:
• What Happens At The Ed...
PBS Space Time on Andromeda Collision:
• The Andromeda-Milky Wa...
Socratica on Ramon y Cajal:
• Santiago Ramón y Cajal...
________________________________
SUPPORT THE SCIENCE ASYLUM
Patreon:
/ scienceasylum
Advanced Theoretical Physics (Paperback):
www.lulu.com/shop/nick-lucid/a...
Advanced Theoretical Physics (eBook):
gumroad.com/l/ubSc
Merchandise:
shop.spreadshirt.com/scienceas...
________________________________
HUGE THANK YOU TO THESE PATRONS
Asylum Counselors:
Matthew O'Connor, Nikolaos Vasiloglou II
Asylum Orderlies:
William Morton, Fabio Manzini
Einsteinium Crazies:
Wacky, Eoin O'Sullivan, Ken Davis, LT Marshall, Ilya Yashin
Plutonium Crazies:
Al Davis, Compuart, Ellis Hall, Kevin MacLean
Platinum Crazies:
André Weyermann, CrouchingTigerHiddenAdam, Eugene Boone, Jon Adams, Jonathan Reel, Kyle Bowles, Marino Hernandez, Mikayla Eckel Cifrese, Mr. Orn Jonasar, Olga Cooperman, Rick Dinning, Stephen Blinn, Vittorio Monaco
________________________________
OTHER SOURCES
cosmology.yukterez.net/
notizblock.yukterez.net/viewto...
lcdm.yukterez.net/index.html#plot
www.preposterousuniverse.com/...
www.forbes.com/sites/startswi...
hyperphysics.phy-astr.gsu.edu/...
wmap.gsfc.nasa.gov/universe/u...
________________________________
LINKS TO COMMENTS
• Are Neurons Just Elect...
• Are Neurons Just Elect...
________________________________
IMAGE CREDITS
Logrithmic Universe by Pablo Carlos Budassi:
commons.wikimedia.org/wiki/Fi...
NASA Black Hole Visualizations:
svs.gsfc.nasa.gov/12854
svs.gsfc.nasa.gov/13326
Karl Schwarzschild Portrait:
commons.wikimedia.org/wiki/Fi...
Andromeda Collision:
www.nasa.gov/mission_pages/hu...
Hubble Ultra Deep Field:
commons.wikimedia.org/wiki/Fi...

[@ScienceAsylum]

*Very Minor Correction:* At 1:45, I calculate the Schwarzschild radius of the observable universe to be 528 GLy. It should actually be 478 Gly. In the end, it doesn't matter because it's still ridiculously big and it's still meaningless... but I felt the need to correct it anyway. To anyone wondering how I got the number, the radius equation actually reduces to this after some manipulation: (Particle Horizon)^3 / (Hubble Horizon)^2

[@narfwhals7843]

But that isn't what you said you did. Plugging in the matter content of the observable universe and hoping it means something gives a Schwarzschild radius of around 14GLy and including dark matter gives something ~5 times larger. Both of these are well inside the particle horizon. I get throwing a big number at us for dramatic effect but this seems like a misrepresentation of your process.

[@ScienceAsylum]

@@narfwhals7843 The problem is that we don't actually know the mass the observable universe... at least not directly. We know its density and we know its volume. If you use 4/3πR^3 for volume, what do you plug in for "R"? The only way you can get a Schwarzschild radius of 14 GLy is if you use the Hubble radius for "R," which doesn't make sense. I used the particle horizon radius for "R," which is why my final equation has (Particle Horizon)^3 in the numerator.

[@narfwhals7843]

@@ScienceAsylum Ah I see. I'll admit that i just picked the matter content of 10^53 kg off wikipedia.

[@612Tiberius]

What would be the consequences, possibilities and/or limits of interactions of and between these these different space-time horizons if FTL (Faster Than Light) travel were possible?

[@maunaowakea777]

I thought that the non-singularity collapse was a function of the anti-gravity (expansionist) dark energy?

[@allannirvana]

Learning about the Universe = Existential Crisis.

[@novakastmusic]

Then don't

[@oceanlawnlove8109]

It comforts me in a strange way

[@yarlball22]

helps me relax

[@EXOPLANETnews]

Hey i have just uploaded a video about predetermined universe if ur curious about it do visit my channel once pls.🙏

[@sir_prize_ma_the_farcar4547]

When ever i try to think about it. I get panic Attack's.😂😂

[@parzh]

Nick: - Is the Universe a giant Black Hole? Also Nick, 1 second later: - No, it definitely isn't. Let's talk about these cosmic horizons instead

[@dondankleberg4965]

Yea right.. Cool video about horizons but i dont really get the statement

[@TheRABIDdude]

Yeah I assumed he was going to talk about the Holographic principle.

[@NickyPhils]

Yeah I wanted to see him address the idea that, inside a black hole, since the singularity is the farthest thing in all directions, you would see all distant objects accelerating away from you faster than objects nearer to you, much like in our actual universe.

[@SoulDelSol]

Dmitry!

[@and_I_am_Life_the_fixer_of_all]

@@TheRABIDdude same here...

[@macronencer]

I can't believe people waste time being scared of ghosts when reality is so much more terrifying. By the way, thanks for the Close Encounters reference - I appreciated that :)

[@ScienceAsylum]

Couldn't resist the reference 😉

[@throughthematter7053]

How can you tell what reality is when you can only perceive it through a limited subjective consciousness from one point of the universe

[@macronencer]

@@throughthematter7053 You have just stated PRECISELY the ancient question that science tries to answer.

[@tomr5121]

I appreciated the Hitchhiker's reference!

[@friedegg3732]

@I Dk no they arent

[@junkmail4613]

In 2020 I'm 71, Retired Electrical Engineer In USA. in 2005 or so I was grappling with these concepts but didn't have effective math to handle it. I went to 2 college Math professors I knew personally, (also retired) with some of the math I thought significant. I must say, it is so stupendous to see it laid out here, even with summary graphs. Advancing through life, it is, and will be for you interested readers, repeating, it is so incredibly amazing to watch the horizons of the unknowns filtering down and solidifying into what is called known scientific reality, and to watch it solidifying!!! I saw Sputnick, Telstar, first trans-Atlantic television in the 50;s and 60's. You folks alive today are so lucky (if society doesn't collapse) to watch the future unfold. Back in '62, there were like 92 to 111 known elements, more speculated, some not yet isolated, just so amazing. Good luck on your voyage, and keep your eyes open. In your careers, you are likely to witness things that you will be unable to describe to anyone except specialists in your own fields. Regards. I digress.

[@johnhandcock7631]

beautiful motivation for others

[@junkmail4613]

@Victoria Varella Highlighted reply 6 minutes ago, "Thank you for your text! I wish I could talk to person like you..." What could be your curiosity?

[@prolamer7]

I know what you mean, as kid I used to read old books of peoples of your age or even older now like A.C. Clark, poor guys thought internet would be used for learning not p***n But I can see It on myself too, my generation used to be excited from things like fast computers, smartphones, but todays kids find nothing exciting about them as they have them around all their life... And I bet it was same with ie airplanes. It feels like first generation of peoples around can make real full use of those technologies, but next generations (with exceptions of individuals!) are just kinda wasting it all in some degree. I could imagine so much better world (even with all human flaws, greed etc) if only tech was used to its fullest in right way, we have so much knowledge now... .

[@Milan-db3uy]

@@junkmail4613 so how was it? The feeling when you witnessed the moon landing. I hope you did though.

[@junkmail4613]

@@Milan-db3uy 2 hours ago, "@Junk Mail so how was it? The feeling when you witnessed the moon landing. I hope you did though." I really felt cheated! I was working in a grocery store as an evening part-timer, working my way through Engineering College, and only saw various miscellaneous video clips after the fact. I believe Walter Kronkite was witnessing and narrating the live event. Had I realized the specific time of the event, I might have taken off from work, (But I needed the money too). Engineering school. There were so many "First events" in science and space travels, they were hard to keep track of, along with 30 hours of classes, 2 hours of homework for each hour of classes, 30 hours of part-time work, 20 to 25 hours of travel to keep it together. That's about 140 hours of 168 (as 24 * 7) hours a week. Not much time for sleep. For me, those were tough times, but I was young, straining to achieve my goals. (Had no idea I was doing the impossible) Wow. How'd that happen? How'd I get through it? For many life is hard work! for others, they have no idea. Apparently, I was having my own daily crisis, and for me, it was one among many great achievements.

[@seanspartan2023]

I was lost until you put up the graph. That really helped :)

[@ScienceAsylum]

Thanks for letting me know. The graph was a lot of work.

[@En_theo]

@@ScienceAsylum I know we don't see say it often enough, but your graphs do help a lot !

[@hippzhipos2385]

I lost him when he put up the graph lmao

[@JavierArveloCruzSantana]

True, but it helped me when I watched- and listened to Lucid at the slowest speed. He sounded drunk as hell, but I could keep up. As always, great job! #FastFast!

[@Secret_Moon]

@@ScienceAsylum Wait a minute. The observable universe has that much mass with all that empty space in it? And why is the schwarzschild radius equation only correct for object surrounded by empty space? And while the observable universe is not a black hole, can the actual universe be a black hole?

[@aeg_music]

Nick: You can’t just plug numbers into an equation and be like “this means something” Quantum mechanics: hold my beer

[@viktorvondoom9119]

Hold my cat

[@judgeomega]

@@viktorvondoom9119 oh no you arent tricking me into that! i refuse to be responsible for a defenseless animals death by looking at.

[@luckybarrel7829]

@@viktorvondoom9119 or not hold it. Both are simultaneously superimposed until you try to look at your hands.

[@rollinghippo2940]

Nicky minaj: i don't talk about useless things like those nerds

[@stickpfp6347]

“To hold or not to hold, that is the question. Probably both.” - milkshake spear

[@jimmypk1353]

Professor Nick has a knack for explaining difficult, hard to grasp concepts. The videos are highly entertaining and lucid. This channel is seriously underrated, although, a quarter million subscribers ain't peanuts.

[@benjaminsmith4058]

I just wanted to let you know that I've recommended this to my extended family to supplement their lockdown homeschooling. Both the accuracy of the content and quality of the presentation are top notch and greatly appreciated.

[@ScienceAsylum]

Thanks 😊

[@randominternetguy3537]

@@ScienceAsylum bill nye 2.0

[@A-Milkdromeda-Laniakea-Hominid]

@@randominternetguy3537 Only crazier. And he has cooler clones haha

[@Aerxis]

@@randominternetguy3537 I would argue Science Asylum's content is more precise and better overall than Bill Nye's. Then again, I have only seen limited amounts of Bill Nye's.

[@randominternetguy3537]

@@Aerxis definitely. Thats why he is 2.0. The improved bill nye

[@adityachk2002]

I always hit the like button because you spread positivity in my life not even kidding.

[@JonasUllenius]

Jup that sounds about right and ripe ;)

[@Dillarune]

me too, the algorithm need to give some love for this guy

[@darkwinter6028]

Except when he’s talking about electrons, in which case he’s all negative.😉

[@JTheoryScience]

@@darkwinter6028 Funny you should say that, im .. positive.. it was Professor Crazy himself in a video who mentioned this once; the 'negative' charge name given to describe electrons charge was arbitrarily chosen and could just as well been the other way around. So you could also say he's all negative, but he would say thats just a coincidence.

[@darkwinter6028]

JTheory - yeah; it’s kinda like asking which way is “up”... when you’re floating in intergalactic space.

[@boggers]

It occurs to me that as we look simultaneously out into space and backwards through time, if we could see just a little further back to the big bang at the very beginning, that huge sphere that is the beginning is also a singular point, so you could see it as the Universe being inside out - at least when compared to the spacetime that came before it. A similar phenomena happens on the inside of the black holes that the Universe is on the outside of, spacetime is twisted so that outwards becomes the past and tomorrow becomes down. What I'm saying here is that we're only *inside* a black hole from the perspective of some whole other Universe that once existed outside it which has always been and always will be inaccessible to us, and from our perspective, the big bang was an inside-out black hole, and the Universe we are in is *after* it, not *inside* it.

[@PerfectPetProductions]

When our white hole universe started a nano second later it was swallowed by a black hole, then we both expanded exponentially together forever. In our far future we will reach the singularity in the black hole event horizon we are currently in. Then we will emerge from a white hole that will be swallowed by a black hole in infinatudes. We are inside a black hole and always will be.

[@darioidan]

@@PerfectPetProductions i'll have some of what his having

[@petevenuti7355]

That means our future it's the same as infinitely falling & can never turn around, sounds a just like time to me! The thing about that theory though is, it seems like gravity from the future is what is pulling us forward in time. If that's true that would mean everything is experiencing the phantom effects of their own future gravitational attraction! Could gravity bleeding backwards from the future explain dark matter! It's dark and doesn't interact with matter because it ain't there yet! I would love to see the math on that! I'd never understand it, but it would be definitely a nonlinear chaotic feedback loop.

[@tcironbear21]

Thank for finally explaining the observable universe to me. The graphs REALLY help. I have known for a long time that the observable universe is a lot bigger than twice the age of the universe in light years, but I never fully grasped how that was so until now.

[@ScienceAsylum]

Glad I could help 🤓

[@ayyappana9457]

@@ScienceAsylum nick plz explain my doubt about photon

[@WokeandProud]

Or does it, Vsauce music starts playing.

[@prakharanand7012]

I was gonna say that!!

[@elijahwu4168]

jake chudnow copyright

[@elliott614]

right? WRONG. right? WRONG. well that's vsauce2 anyway

[@elliott614]

(vsauce2 anyway)

[@manishgant]

Missed opportunity

[@sohinichakraborty8126]

It's 1am, my exams are going on, and I'm here watching brainstorming space facts. It's ok to be a little crazy though

[@projectmanagement2356]

Cool kid

[@flannn6]

wait u having exams at 1 am??

[@LKRaider]

Flander Abreu it’s always 1am somewhere

[@neerajchandran8948]

@@projectmanagement2356 JEE exams?

[@johansmith4764]

Good luck with your exams!

[@SaebaRyo21]

The ending part where Nick has mentioned that "each shining of the galaxies in the deep space image are actually 'ghosts' from the distant past" really terrified me! I cannot express this last part in exact words... But whenever I enter in contemplative state and I realise if hypothetically scientist receive a distant alien radio signal today from any of those civilization... They all are already gone as well!! :( That signal was indeed a "ghost" signal from those "ghost" galaxy that sadly has gone forever. Because life is finite (technically), this surely means that distant alien civilazation (esp that generation who sent the signal) have been dead by now :'( as both light and signal have launched waaaay before as it is reaching to us now. Additionally, we also share the same fate to them (and others)! :) Footnote: I also imagined that I somehow could see that alien planet via my super hypothetical telescope (thought scenario) as soon as i receive the signals, that means by now those roaming beings in that planet are all dead by now since i am watching that planet's (thus, aliens') past; that planet may have been destroyed by now either by its home star's end life or kicked out by some catastrophic case as a rogue planet... So, we humans also share the same fate as if right now if some other aliens (again imagine :p) watching us millions and millions of light years away, they would have to wait looooong enough to see the present day earth!!!

[@AlxndrHQ]

Life may be finite but energy can only be transferred

[@antman674]

Ive seen several videos describing the particle horizon and it never quite made 100% sense. Now I get it though! Even though Im sure there is some tricky math involved to get the actual numbers, the concept makes better sense now. Thanks!

[@suleimansiddiqui2468]

KZbin's algorithm is flawed. This channel should have been recommended and should have more subscribers than it actually does.

[@pronounjow]

Give it time. This question gets a lot of mainstream attention.

[@ailblentyn]

Suleiman Siddiqui Totally agree. It's accurate and accessible, funny and friendly.

[@Tosmasta00]

Happens to most good channels sadly.

[@SamuelKristopher]

Got recommended to me, first time visiting this channel.

[@bmoneybby]

Yep

[@PaulPaulPaulson]

That past light cone is the most helpful animation for me I've seen this year. It's just based on things I already know, yet it's a perspective that makes it soo much easier to think about it. Thank you!

[@ScienceAsylum]

You're welcome! 🤓

[@thomashenderson3901]

@@ScienceAsylum So the 17.5gLy eventual horizon is the breadth of our future light cone?

[@universemaps]

Always an honor to be in the thumbnail, this channel rocks!!

[@jamesaron1967]

Dude, I like the way you describe difficult to grasp concepts in an semi-nerd/semi-unhinged fashion.

[@narfwhals7843]

I see you there, little flatland creature. I see you found a good home as a roomba. Learning to adapt in a 3d world. Good on you!

[@davidgumazon]

What if Universe is expanding exactly like Minecraft... Our telescope is Render Distance and our technology is Options/Settings. Plot Twist: Far in the future (Mankind almost extinct), our Universe is rotating around the void (imagine Minecraft but without Minecraft planet and those stars are galaxy clusters or whatever)

[@WarrenGarabrandt]

I couldn't figure out what it was.

[@HeyJuuu]

Are you a 4D being?

[@WarrenGarabrandt]

@@HeyJuuu we ALL are 4d beings.

[@narfwhals7843]

@@HeyJuuu We all are.

mate, you explain things like nobody else! thank you!

[@jeiwillie]

Second that!

[@noredbull1]

Third that!

[@willieboy925]

He explained it like a teenage girl wtf are you talking about

[@altuber99_athlete]

@@willieboy925 What do you mean, exactly?

[@ithaca2076]

@@altuber99_athlete he's special don't worry

[@chrismcgarry3160]

8:32 The Time-Graph + 2D-Horizon Animation = Clearest illustration of the Horizons Behavior I've seen yet! Nice job!

[@JohnDuthie]

I love your energy! It makes learning fun when the teacher’s enthusiast. Thank you.

[@nehamotwani6477]

"or does it?" This made me miss vsause ☹️

[@flannn6]

or does it?

[@2nd-place]

RIP

[@culwin]

Vsauce's last upload was 1 month ago.

[@perperperpen]

Vsauce still uploads... and im sure he could just be working on something else, like how he had the mind field show, which was very good and if you havent seen it you should go watch it rn.

[@barretthenderson5808]

B r u h vsauce still uploads, they just take lot of time and care to make there videos so it takes a while plus this isnt the first time they haven’t uploaded in months because it takes Atleast a month for 1 video

[@robharwood3538]

Hey dude, love your videos! You're one of the best science communicators I've ever found, especially in how you're able to pack so much info into such a short video format. Actually, I wouldn't mind longer videos, tbh, but I'm still super impressed by what you can do with your current short-format work. Kudos! 😎👍

[@ScienceAsylum]

I make longer videos when I can, but they take _forever_ to produce and I like to upload twice per month.

[@YonatanAvhar]

I love watching these videos about stuff that is so far outside of our everyday lives, absolutely awesome

[@edmundwoolliams1240]

Your explanations are so good I finally understand these horizons now!

[@daemonsilverstein8633]

2:54 "Or does it?" _Vsauce's song starts playing_

[@Aurora-oe2qp]

The ending was kinda Vsaucesque too.

[@dramforever]

@@Aurora-oe2qp I almost heard in my head 'And as always, thanks for watching'

[@stjerneskruetraekker]

What are the odds! On my KZbin frontpage Vsauce appeared right over this video, I scrolled down and then Up because I read Versace. I have never seen that name before and then I saw it was not the clothes that Big man with the beard was about. I click on this video, go to the comments while the video plays. And then I see this fucking comment writing Vsauce - a word I never seen before!

[@manveer1998]

@@stjerneskruetraekker I just had vsauce show on top of this video too! A 4 year old video, weird

[@stjerneskruetraekker]

Manveer Kandola agreed, and now I get his Channel in my recommendations - wtf

[@adityachk2002]

It's actually amazing that I can still keep on learning, probably forever from KZbin

[@Nobddy]

If you think KZbin is good, just wait until you get to college.

[@adityachk2002]

12 34 you mean ill have to use youtube all the more or the college will teach better?

[@Nobddy]

Adityachk2002 both lol. Mostly that college teaches you better though. Outside of the introductory classes college classes are generally dialogical, meaning a lot of ideas come from not only your professors, but the people around you. The value of sharing ideas in real time and taking the time to struggle with those ideas and formulate your opinions/solutions based on those ideas into rational and effective discourse, no matter the subject, is immeasurable. I took college courses in class and online. I always got more out of in-person classes. And honestly, a lot of the difference is people just asking questions in a classroom. It just isn’t the same online. Not even in a zoom call. I don’t know what country you’re in, but when the pandemic is over I recommend in-person classes. You’ll use KZbin sometimes.

[@adityachk2002]

12 34 thanks a lot, i am from India and i too prefer offline classes, but i feel you may not always get good quality profs because you are constrained to only one, i also plan to peruse engineering preferably computer science. :) what i tried to say is that i may learn economics from youtube or how to do excercise and be fit or even General knowledge like this channel which wont be taught in my course but i have some interest in it

[@Nobddy]

Adityachk2002 cool! Good luck. Study hard.

[@chipmcdonald5324]

Thank you for another awesome tour of the visible universe! All of your videos are interesting, and you are a skillful and animated explainer.

[@StabbyMcBlade]

Great video man, I like your style 👍

[@ScienceAsylum]

Thanks!

[@waqqiali2960]

This channel definitely needs to get promoted, I have been watching this channel being consistent for soo long while maintaining the quality as well.

[@WarrenGarabrandt]

I'd like to offer you my congratulations on this video. Usually I have to watch Kurzgesagt if I want an existential crisis this intense. How is it possible to feel trapped in a bubble of space when I was already trapped on the skin of a tiny planet?

[@maximkhan-magomedov431]

There are no reasons to worry. That bubble is so unimaginably large that we can consider it infinite.

[@ashwinjain5566]

watch exurb1a to have extreme existential crisis

[@robharwood3538]

Most people will remain trapped on Earth's skin (nice metaphor, btw!), but at least in principle it's _possible_ to escape it, and several folks actually have. Indeed, technically speaking, it's possible (even practical) for our species to 'escape' Earth, to colonize the Solar System and eventually other stars, the entire Milky Way, and even make its way to other galaxies. And by that time, who knows what additional physics/science we'll have discovered to extend our existence even further/longer? Of course, that's all assuming we don't blow ourselves up to extinction first. All the more reason to keep pushing for science, reason, and basic education in society. But I digress. In the meantime, "Cheers!" 😀🍻

[@paddaboi_]

@@robharwood3538 sometimes I wish everyone in the world could stop arguing with each other over shit and everyone is happy, but unfortunately that's nothing more than a dream

[@user-bl1pw2th4l]

Your videos are fantastic. Don't ever change the format or music 👍👍👍

[@Siege181]

Gosh darn it, this the the most underrated channel on KZbin!

[@retepaskab]

Karl's radius, Erwin's cat, Stephen's radiation

[@ScienceAsylum]

Yes.

[@anandverma7649]

Damn I had checked out if you uploaded a video just 15 minutes ago, and within 10 minutes you did it?!?! Thanks! 👍

[@ScienceAsylum]

You're welcome!

[@rmonico1]

Because this I stopped using RSS reader on KZbin videos.

[@barefootalien]

Great job on the expansion animation! So glad you didn't just blow up one image (thus expanding the galaxies too)! Very nice, very subtle way of communicating what really happens in an intuitive way.

[@universemaps]

The graph and the animation of the horizons cleared my doubts about those.. Thanks!!

[@ScienceAsylum]

Glad I could help, Pablo.

[@vtron9832]

For a second I thought this was PBS space time.

[@harshildeora1001]

Lol

[@ScienceAsylum]

I've been trying to step up my thumbnail game.

[@iamtheking95]

They are very complicated

[@kylebowles9820]

Nick x Matt crossover would be awesome :)

[@csehszlovakze]

@@kylebowles9820 I recall Matt wearing a Science Asylum shirt at least once.

[@brawnstein]

Now I understand why a great man(?) said - "In the beginning universe was created......This was widely regarded as a bad move and made a lot of people very angry"

[@garavonhoiwkenzoiber]

Should have bug tested it first

[@iainhammond5288]

gotta be d adams

[@brawnstein]

@@iainhammond5288 D Adams is F Perfect

[@rednammoc]

DNA FTW

[@davidwuhrer6704]

Don't worry, it's just a test universe, it's not meant for production.

[@Nakameguro97]

EXCELLENT animation comparing the the horizons - really clears up some confusion I had. TY! Gonna buy your e-Textbook.

[@marcsaraiva2654]

Nick has an Etextbook?!?

[@kmatcyk]

Thank you for everything! You are awesome. I appreciate all the work.

Seems like the universe is a reverse black-hole. Stuff can separate indefinitely

[@silviafox78]

perhaps the same force of physics causing rapid expansion was the reason for the entire universe even existing at all. The original big bang's reason for ever happening could also be the force which will tear all of existence apart in the future.

[@shrill_kill9929]

@@adammay1130 I think you are wrong , black holes are created with mass (initially ) then into a singularity ( no point scale ) but how can u say that a universe is white-hole or a reverse black-hole because the is getting created from nothing !! and it is expanding to creating ! universe vacuum is empty , emptiness can expand but something form nothing cant work ( a big role play : forgot the big-bang do think its a white-hole ,NO right ? our universe doesn't produce an infinite energy (thats a reverse of a black hole ) . I hope it helps u to understand.

[@adammay1130]

@@shrill_kill9929 and what was in the universe before the big bang

[@Ren-kei]

@@adammay1130 People come to the conclusion of the big bang because its a god proxy. if we were inside of a black hole it wouldn't' be observable to us, but we will be able to see the event horizons (which we can) whats actually disturbing and interesting is that black holes technically can create the closest thing we'd know to a singularity possible but not truly a singularity (this has been almost proved in current loop quantum cosmetology at least in theory) that at one point. a "Big Bounce" is possible its just traditionalist refuse to believe anything otherwise. ultimately every universe ends in collapse into a super massive black hole and contracts to the point closest of a singularity only to expand back out, because only a black hole can contain so much energy. another issue with the big bang is no singularity is known to exist and singularities themselves go against the second law of thermal dynamics. currently in modern theory the idea of a nonsingular big bounce is actually quiet popular as its been in the shadows since the 1980s, but seems more realistic as we delve deeper into unlocking our understandings of the quantum. most likely we may not be in a back hole as of right now, but clearly we seem to be in some kind of infinite loop as no energy or no information can ever be lost.

[@adammay1130]

@@Ren-kei I actually like the big bounce theory better this is the first iv actually heard of it but it seems to be very similar to my own thoughts excluding the white hole idea essentially my theory is the same black hole sucks in then it all gets spit back out

[@cerwe8861]

"Schwarzschild" is also German for "Black shield" which is a really cool coincidence.

nice you brought that up :)

[@Sparky-vj2dq]

@UCPirghkVgp4avieZtrlnfLg Naughty! No, it doesn't. If anything, it translates s something like "black Edge" where the edge is a selvedge or reinforcing edge incorporated in a piece of fabric or cloth.

[@cerwe8861]

@@Sparky-vj2dq im from Germany and German is my Mother Language so i probably know what it means. Schwarz is German for Black And Schild is German for Shield.

[@stygia2617]

@@Sparky-vj2dq No the litteral translation of "Schwarzschild" is "Black schield" or "Black sign". I dont know where you get black edge from. Black Edge would be Schwarzekante. So please stop spreading false information

[@Sparky-vj2dq]

@@cerwe8861 Indeed but the questioner asked about Arnold Schwarzenegger not Karl Schwarzschild. Off topic, I know. Egger is a family name but not sure of the origin.

[@Me-xg5cr]

Love your work TSA!

[@ScienceAsylum]

Thanks!

[@diemme568]

definitely the best video on astrophysics' horizons, very well made!

[@2azy_creative]

Best science channel on KZbin 👌

[@ailblentyn]

Is the Universe inside a giant black hole? These days, it often feels like it.

[@livewireOrourke]

Not sure whether to laugh at your witt or cry at your truth.

[@michaelsiders8973]

*always has been*

[@calccalccalc]

Just found this channel, and wow, I have to say, you ask some really good questions!!

[@abelmendez7225]

I know a lot about science, until I watch your videos. Always something new to learn, subscribe!

[@gammelgarten]

This channel often takes me to my intellectual limits (and unfortunately beyond). But I love it! Why doesn't it have many more subscribers?

[@waynepurcell5152]

Great video, as always. Education as fun - always the best way to learn. The idea of ghosts from the particle horizon was profound - just how crazy space-time really is and how lucky we are to be alive at this point in it! I got a shiver down the spine by thinking that light from our galaxy could be some other beings ghost, in a place beyond touching or ever really knowing.

[@richardbarstow3861]

That galaxy collision was scary yo

[@SidKnight]

EXISTENTIAL CRISIS ALERT!: "The cosmos is terrifying!" 🤯

[@williamwhitney5266]

Welcome to the Comic Dark Forest

[@sillypoint2292]

I love your videos!

[@bananamaniac2]

The earth splattering on the wall behind you made me laugh wayy harder than it probably should have 😂

[@johngrey5806]

Again, mind blown! Thanks for the video.

[@deepthroat6674]

This channel is awesome. SCIENCE RULES

[@swapnilshrivastava6889]

Amazing! I have always been a little rough on these horizons and how they fit in together, but this totally cleared them up for me. Thanks for the video!

[@ScienceAsylum]

Glad I could help 🤓

[@zingglukas4006]

I literally expanded my horizons with this video... ;)

[@rmonico1]

Man, I'll have to watch this again to understand. May be after two beers. You always make my day better, thanks!

[@koffkoff4274]

Thank God you put the arrows pointing to the black holes in the thumbnail. I would have NO IDEA where to look for the black holes. Keep up the great arrow-drawing work!

[@narfwhals7843]

The thumbnail is a picture of the observable universe, not a black hole. But those are some mighty fine arrows.

[@pajaf0341]

Before watching. I asked myself that question for years and now my favourite youtube chanel dedicates a hole video on this? Thats so cool. My guess was, being just a simple musician, that also the stuff outside our event horrizon was compressed there was no event horrizon possible, since everything tug on each other from any direction. And now I'm SUPER curious, if the answer is somewhat in that general direction...

[@DFPercush]

Pretty much. A black hole requires a density _gradient_ , a difference in mass concentration between two areas. A uniform space with matter everywhere doesn't really have one central concentration of mass compared to everywhere else. It's like in those analogies you see in animations of bowling balls on a rubber sheet, or let's say a trampoline... instead of a ball pressing down on one spot, you just drop the whole trampoline on the floor. Yeah it's lower, but it's still flat.

[@eeHMFIC]

Dedicate a 'hole' video. Clever

[@3xAudio]

Love you videos man, Keep up the good work.

[@leeberry3708]

Love the video though keep up the great works helps with the covid stress so thank you.

[@ScienceAsylum]

You're welcome 🙂

[@honestinsky]

Excellent video, thank for posting, much appreciated. Love your awesome channel. A+

[@ScienceAsylum]

Thanks! I'm glad you like it 🤓

[@quahntasy]

*i seriously though PBS spacetime uploaded a new video* Loved the video though. More space stuff please.

[@siddharthsingh1319]

I actually thought that and you made a video. But i still don't understand what mass actually is i hope you cud explain better.

[@alexvilonyay8597]

Absolutely amazing! It's clear concise and I always learn something new or solidify my understanding I'm a crazy for life

[@ZubairKhan-vs8fe]

Your videos are just ..... Brilliant

[@sherbatt4769]

You should do a video on the theories of the shape of the universe.

[@maximkhan-magomedov431]

I believe he did it already a few months ago. At least there is a video about "flatness" of the universe.

[@yogirajtambade8658]

U are Greatest Cosmology teacher in observable Universe

[@peterd5843]

This channel is amazing

[@erisedym4519]

Amazing Editing and entertaining. Subbed.

[@ScienceAsylum]

Thanks! 🙂

[@zephyrandboreas]

The strange ways how, even in war, humans are capable of lighting the path of knowledge. Schwarzschild did his calculations in his spare time while calculating shells' trajectories during WWI. I will never be able to reconcile how humans are capable of both simultaneously, creation and destruction (but I digress).

[@aryyancarman705]

just take destruction as -(creation),maybe this could help ?

[@altrag]

Dissociation. Its a lot easier to calculate shell trajectories if you're able to put aside any thoughts about what those shells will do to other people and just focus on the math. From there, it just becomes a situation where math is math. Its similar to (but not really the same) as desensitization training we started putting soldiers through after the abysmal firing rate during WW1 (ie: soldiers being unwilling to shoot enemies.) If you can avoid thinking of your enemy as "people" and just think of them as "targets," its much easier to pull that trigger. At least until smacks you later in the form of PTSD but by then its too late.

[@hisholiness4537]

He likely did it to get his mind off of all the stress that comes with war.

[@chugiron4698]

The only way that it doesnt make sense is if you view humanity as a hivemind that is always working towards a specific goal. Humanity is a collection of billions of people all of which have their own interests & goals, so it makes perfect sense how we're capable of both

[@hansnase364]

I love it that you settled for calling it the Karl-Radius. That also means I don't have to correct your ponunciation anymore. :D

[@johnroberts2620]

What’s ponunciation 🤣

[@MassimoAngotzi]

It’s how you ponounce wods

[@maximumryan]

Brilliant episode!

[@AricGardnerMontreal]

cosmic horizons are dope, thanks for the video!

[@Ferdaev]

That explain why universe is always expanding

[@elgabacho73]

I hit the "like" button because I'm a little crazy.

[@hans-olofsvensson1195]

And until next time, remember it's ok

[@alangunn7254]

I was standing when I started watching this and by the end- horizontal! Your style is great! It’s what it would be like if children’s entertainers were really smart, passionate and entertaining! 😁

[@ozguitar4794]

i freaking love this channel

[@Eric.T.Cartman]

I just found out that my event horizon is somewhere around the bottom of my beer glass.

[@ithaca2076]

Lmao

[@seattlemkh]

This is great teaching, says guy with 14 years of postsecondary and 3 degrees. If I ever meet my potential as a human i will teach like this.

[@Ren-kei]

Damn would love to have that much year of school - guess we are always learning though!

[@cy6412]

The more I learn about the structure of the Universe the more terrified I get.

[@ScienceAsylum]

Sounds about right.

[@problemsolver3254]

I needed this

[@VictorKibalchich]

“Space is big. You just won't believe how vastly, hugely, mind-bogglingly big it is. I mean, you may think it's a long way down the road to the chemist's, but that's just peanuts to space.”

[@alansmithee419]

My favorite entry in the hhg is when it's describing disaster area (Hotblack Desiato's band). Though it's entirely possible I've just forgotten a better one, there are quite a few.

[@MarcoRoepers]

Did I understand it? Lets watch this video all over again

[@jaymxu]

Thank you very much for showing me i'm not the only one who had this thought!

[@fallenangel8785]

Two words... YOU ARE AWESOME.

[@johnroberts2620]

When we figure out how galaxy’s ride the expanding space waves we’ll figure out ftl.

[@Psychol-Snooper]

Surf's up!

[@galactic-shithead390]

Wish my physics teacher would explain stuff like this. I could've been Tony Stark.

[@Bizija123]

Just learn about Eigenvalues and Eigenvectors and you'll be Stark in no time.

[@kingplunger6033]

@@Bizija123 I don't think turning into an unrealistic fictional character is a worthy goal, but to each their own ^^

[@LendriMujina]

I always thought it was a pretty cool coincidence how fitting naming the calculation for an event horizon's size after Schwarzschild was, considering the name literally means "black shield". Which is a pretty apt way to describe what an event horizon looks like.

[@timdoe3913]

This is great stuff

[@kalkal8050]

I really wanted a video of this idea! This idea is for crazies! :)

[@kalkal8050]

@Ich Dien yes, it seems like I have began to like this choices , some which I really wanted and some which comes as a completely new thing for me to learn

[@ResandOuies]

"the Karl radius" :D

[@DavidBaronStevensPersonal]

This is a really great explanation of a concept that boggles most everyone

[@shreyanshrajput2026]

Subscribed!