Black Hole's Evil Twin - Gravastars Explained

[@kurzgesagt]

Go to brilliant.org/nutshell/ to dive deeper into these topics and more with a free 30-day trial + 20% off the premium subscription! This video was sponsored by Brilliant. Thanks a lot for the support!

[@Victor_hehe]

just finished watching the whole existential crisis seris !!!

[@kolakeshobha4829]

Hello, can you please make a book about the space like the same number of pages as the immune system I loved the book, which explained to me a lot about the immune system The book would be about the iceberg of space knowledge

[@ObadiahQRex]

GravaStar sounds like a transformer.

[@U-A-FTAUTTPTAYFGAATZNTTPTUTTD]

Grass👍

[@Chitose_]

GUYS, KURZGESAGT UPLOADED

[@schana96]

Black holes and Neutron Stars I could kind of wrap my head around. But this is so out of left field. I mean "Have you heard of Nothing? Well get ready for the newest thing: Nothing² ".

[@Kairi-ou]

Ironically, your joke made it easier to understand this video 😂😂

[@StrikeWarlock]

Truly a division by 0 situation

[@mackomaxo]

More accurately, Nothing^3

[@jeremypanjaitan4039]

Nothing: Episode 1

[@yeetyiu4505]

For me is the membrane, like what is it made of, how would it enen work, there is an insane amount of energy contained therea and still that otherwordly physic abomination doesnt pop

[@Finchyboi14470]

As a science fiction writer I am so happy you’ve given me something new to research about so I can include it in a novel

[@NostraDavid2]

I was wondering how long it would take for scifi writers to pick up on this (either in book form, or series/movie.

[@brine3722]

I didn’t know bro was writing about the black hole bay harbor butcher

[@brine3722]

we look forward to your career with great interest sir

[@Fangman123789]

My first thought was "Imagine a Gravistar Arena for deathmatches between celestials." 😂 Im sure the possibilities are seemingly endless though. Gravistar colonies, Gravistar solar systems with sentient life, Gravistar collisions/destructions, etc!

[@someone________2502]

New unobtanium just dropped! It’s called Gravastar Shell

[@Atomic_microwave]

finally, the universe got an update

[@ST0AT]

Billions of years of waiting have finally paid off

[@MjhdNfl]

The devs finally got motivated for another update.

[@DCatGameDeveloper]

Like, 7+ years ago

[@simonhibbeler5396]

The devs cooked with these new star skins! Cold and invisible fire! How much you think it would go for in the CSGO store?

[@ping_th]

I think the dev just don’t tell us all the feature and let us figure it out

[@greenth-mac2550]

I find it mind-blowing how researchers and scientists and able to learn all these stuff that are millions of light-year away from earth. I'd prefer to not think about it too much and enjoy these beautiful and scary discoveries about the universe.

[@luki4358]

3:20 “So, you got a new astrophysical object for me?” “Yes sir, I do! And the shell is…” “Oh, shells are tight!”

[@ryshow9118]

Get out of here Ryan 😂

[@PearlescentMusic]

"So is making a new object that might not even be possible going to be hard?" "No, Super Easy Barely an Inconvenience!"

[@leetri]

Wow wow wow wow............ wow

[@isaacharvey451]

@@PearlescentMusic "Oh, really?"

[@Zurpador164]

Unexpected reference

[@asleker377]

Stars be acting like drama queens when they die,like chill out you don’t have to break the laws of physics just because you died

[@MaksimCherkazyanov-b9s]

fr

[@theeelman5918]

FR

[@BillyBobdonkerman5942]

Thats so real

[@RespectfullyBiasedReader]

dam there goes my weekend plans

[@universaltoons]

yes

[@teyrns]

the background track for this video goes RIDICULOUSLY hard

[@phs125]

Yeah I wish I was high

[@yeetyiu4505]

Yes

[@Tdjxtcz]

Cyberpunk vibes

[@DasDaniel007]

@@phs125 i am 😂 a bless that its legal since this year even though that didnt play a role for me in the years before xD

[@thefridgy6592]

EPIC MOUNTAINN

[@luvotheoduntsu708]

6:13 "Dormammu, I've come to bargain!" 😂❤

[@luvotheoduntsu708]

If you get it😂🫶🏽

[@NANA-dv5ix]

This is just how things are, you and me stuck in an endless loop forever

[@AlecSoD]

3:15 Here’s the latest design of the prison to contain the snail so I can live forever.

[@AzureMyriad]

REAL

[@Draconicfish2679]

Couldn’t you just throw it in a normal black hole instead?

[@Serhii_Diemientieiev]

@@Draconicfish2679 Black holes decay and it will escape

[@reenabalasarangi9331]

💀💀

[@NatanAoContr4rio]

YES

[@mavor1984]

The analogy of gravitational waves as the sound of drums and a gong is absolutely amazing

[@minimalbstolerance8113]

Would love to see scientists flip their shit by listening to gravitational waves expecting a gong or a bass drum, and what they detect sounds like a timpani...

[@naufalap]

somewhere out there in the infinite universe they sound exactly like skrillex

[@camramaster]

​@@minimalbstolerance8113 That is a different one, and it is also very, VERY weird.

[@spindash64]

The Music of the Spheres

[@impact0r]

That's not an analogy. Gravitational waves have been translated into sound since day one.

[@Omnywrench]

I propose we call the material of gravastar shells "gravity glass" or "cosmic crystal", because we need more alliterative names in science

[@ellioto8708]

I second this

[@wdeltag]

Not crystal for sure. Crystals have structure, and that shell physically can't have any structure. IMO, glass is more relevant here

[@BroKenYaKnow]

Gravity Cocoon?

[@vkobevk]

gravastar is already a great name

[@BroKenYaKnow]

@ we’re not talking about the whole thing, just specifically for the unnamed material that makes up the shell

[@kraya6740]

I like the fact that the video is curated even in small details like the notes played by french horn and trumpet are part of the scale of the background music played through the video.

[@PearlescentMusic]

Vacuum: nothing Gravastar Inside: nothing but more of it

[@angelcollina]

🤣

[@mollof7893]

Less is more

[@sycronix_]

0 multiplied by bigger numbers

[@alexandermcclure6185]

it's nothing^3

[@TheRelaf]

Suddenly, the Nothing Shop of Ephemeral Rift makes sense

[@Omicrom_trades]

Black holes vs Gravastar would be absolute cinema

[@Cat-mx2mn]

The gravitational wave will destroy everything that’s near to them

[@Novarcharesk]

The latter is a replacement theory to black holes. They wouldn’t exist together.

[@HeyyaitsmeGoku]

Would you lose? Black hole : *Nah, i'd win*

[@arielferrer9421]

​@@HeyyaitsmeGokuSadly, Uhmmmmm can a quasar beat an gravastar?

[@Brasileiro-brazilian-d5j]

Black holes Win but well uh when gravastars hit the blackhole It may transform into a blackholexd

[@TheArtisticGamer7]

You gotta love how hyped this is getting people here. In the past 60 years we've lived through SO many different fringe shot in the dark theories being proven/discovered as true that weren't fully accepted but now are, that the sheer suggestion of a new form of celestial phenomenon has people excited for what we may discover in the coming decades. Gotta love humanities collective knowledge of the universe becoming so vast.

[@demanzanop]

La creatividad y la curiosidad son propiedades emergentes del universo y el ser humano es su expresión máxima. Eso siempre nos conecta. La búsqueda del conocimiento nos une.

[@EneldoSancocho]

I agree. Collective knowledge is way more beneficial to collective wellbeing that individual knowledge. The incredible amount of genius, knowledge and work that made possible the smartphone, or the laptop is hidden to most owners or users, so people get to use artefacts that are very much beyond their understanding, and that means we are not getting wiser as a species to the degree it would seem possible, given the amount of knowledge we have acces to. We grow productivity and also waste.

[@EneldoSancocho]

I blame evolution mainly, and statistics as well. If we loved everyone equally (as strange as it sounds), we wouldn't expect to be preferred among others because of affection. We are not ants, and so we prefer, and we rank what we observe from better to worse according to our preferences, the we need to be better than others, in some scale we ourselves conceive, in order to be preferred, and so better all kinds of aspects of our lives (from survival and reproduction to luxury or excess). Although statistics describe rather than inforce, a lot of aspects of our societies are explained through stats, and statistics and probability theory imply that "evil", powerful, rich and intelligent persons will exist, and inequality will, and wars will. The specific explanation is simple: Given our limitations as human beings, we can, at best, excel at a few things. To be powerful and rich, philanthropy is a deterrent, so it is logical that, throw natural selection, the people who have power are not particularly nice to everyone, but are rather cunning, intelligent, and have good social awareness. All I said no one will care, but I'll say one more thing: In this time of conspiracies, it is recommended to try to think and study, and to remember okams razor (or however it is).

[@TaigaClaws]

we all long to look at the stars with wonder again

[@1000byakuya]

And only just scratching the surface. Real progress hasnt even begun yet. Most physicists know that in order to advance technology we need to understand creations like black holes/wormholes far more then we do. Things such as darkmatter. They literally are the key. And not so much the terrors that humanity used to view them as. Funny how something so destructive can also hold such hope at the same time.

[@shaunmakabea-lx2pm]

Kurzgesagt and melodysheep, you are the best thing that has ever happened to me and im forever thankful for your videos ❤

[@ansrik1238]

I love that kurzgesagt is showing us theory that might or might not be real, It really helps people to open their minds to new ideas and be ready to throw away wrong ideas, rather than getting too attached to one theory and becoming closed minded

[@dearthditch]

That’s why I was stunned they didn’t have a name for the shell material. Even a placeholder like “dark matter”

[@borekminer]

also helps them from running out of content to make..

[@QuantumHistorian]

The issue that many people will quickly forget the caveats and end up thinking that these objects are confirmed scientific knowledge rather than a theoretical potential. In much the same way as the metaphorical nature of the explanatory metaphors get lost, and people end up remembering them as literal truth. The sad paradox of science communication is that if you make things clear enough for people to understand, they'll end up with 99 new misconceptions for every correct fact.

[@arwenrosefall8081]

Most people are too stupid for that, they'll get attached anyway and then be like hurr durr science has been wrong before, experts don't know anything

[@deivytrajan]

More like promotes conspiracy theories.

[@amhuman5138]

The background tracks go INCREDIBLY hard, the sound designs been getting really good for a while now.

[@rikschenk8859]

I agree, i wanted to metion it too especially because i'm a sucker for soundtracks that make something sound big, grand, legendary

[@Nome_the_Furry]

I wonder what happened over at Epic Mountain that caused them to suddenly take things to the next level?

[@Deletirium]

I concur. Based OST.

[@andrew24601]

i’m sure it already has a title, but since i don’t know what it is, i’m calling it birbstep.

[@Nome_the_Furry]

@@andrew24601 The titles of the songs are always very similar to the video titles. They don't have unique names like you'd expect.

[@machicolationmc]

The music quieting out to leave only the bass at 9:24 when describing how two colliding black holes would sound is just incredible.

[@Mohta_mischief]

The bgm in this entire video was amazing!

[@universaltoons]

🤑

[@jacobpayne2721]

Literally such a good little detail, things like this are why I love Kurzgesagt

[@fallbranch]

It was there the whole time! Chills.

[@AdeKass_YT]

10:13 isn't this bingo

[@samchen9951]

Kurzgesagt, you're the coolest channel on KZbin, period. Thank you for introducing such an amazingly fresh concept that it broke my brain and made me feel "wow, what a time to be alive". For a long time I felt that I'd learnt all the big concepts about black holes and neutron stars already. But this concept was so far out it broke my brain to learn about it. If it's physically possible in theory, then I'm sure somewhere in the endless multiverse, there's a universe that has these objects, these amazing gravastars.

[@raffaeleparise6321]

Vacuum fluid? Rise up 1800's gang, aether theory is back!

[@hershmysson]

Aether! Aether!!

[@smivan.]

i can't believe sons of ether got welcomed back into the technocracy after all this time

[@joostvisser8537]

My first thought too lmao

[@raffaeleparise6321]

@@smivan. Only the most enlightened of sciences going on here

[@rellloom]

my exact thought at that point also

[@MyPunky35]

I said it before and I'll say it again: the sound design and implementation, and the songs in the background are getting really, really good. They elevate these videos to a whole other level!

[@SnoFitzroy]

you should revisit their video on Quantum Computers! One of my favorite Epic mountain tracks, and one of their oldest.

[@rmn4]

6:52 "one or two videos on black holes before" - my brother in science, I've binged your entire series on black holes, and I LOVE IT. Thanks for all the cool science vids!!!

[@him1465]

My Brother is Science is crazy 😂

[@harrisonlorens3585]

@@him1465yeah, crazy cringe lol. Like come on man.

[@yuvrajdas9552]

My brother in Science, Only thing I have searched for my first 4 years on Internet were "BLACK HOLES"

[@goober_985]

@@harrisonlorens3585 let people be corny. it's fun!

[@rykehuss3435]

Watch PBS Space Time if you want some actual understanding

[@Threlly]

I've been thinking about gravastars for years, but never tracked down much that shed any light, but these things are truly, truly nuts.

[@Zauhd]

The sound design in this video is INSANE. Even at 9:50 the instruments are playing perfectly on key to the background track. It's amazing the work you guys put into every detail. Keep it up 👍

[@shennyboi110]

Agreed! Also at 9:22 when the music stops leaving the bass drum thumping alone is brilliant.

[@devinward461]

​@@shennyboi110 I had to rewind to see that part again because it was so cool

[@dangerfly]

I like how it overwhelms the narration. Not extremely distracting at all...

[@robocu4]

@@dangerfly yeah, it wasn't distracting. you're right.

[@ulitharid8907]

The sound design teams and the band that makes their music, Epic Mountain, have been churning out absolute masterpieces recently. The background track for the Smoking and Vaping videos were both incredible too.

[@solarsailer5702]

It's weird to see human scientists instead of bird scientists in a kurzgesagt video

[@OctyabrAprelya]

We gonna need THUMBS where we are going 😎

[@hydrocarbon82]

Maybe they wanted to prove a commenter wrong they aren't using AI, since...the humans have hands lol.

[@angelcollina]

I loved the poor traumatized physicist

[@scoutmiller7734]

The birds are the animators now.

[@TheSanpletext]

Science is not about proving the truth. Science exists to disprove itself. When it can't, we have found scientific fact. That fact will be refined or even disproved when science progresses further. That's why we love science.

[@TON__618.]

EXACTLY 💯

[@DJNiems]

Keep in mind that a scientific “theory” does not “become” scientific “fact”. A “theory” is just nomenclature to describe the “how” or “why”, whereas “fact” just represent the various scientific laws contained within the theory, i.e. the “what”s that will happen within that theory, such as directions, accelerations, etc. Not disagreeing with you but just expanding on your comment.

[@slkjvlkfsvnlsdfhgdght5447]

what you described is *exactly* the same as looking for the truth

[@explorateur8159]

Yeah I think philosophers of science think that science is about empirical verification but ultimately, science is more about negation than affirmation or logical positivism. Similar to the two qualitative differences between tools often described in science, specificity versus sensitivity. Science, as a rational tool, employs greater specificity than sensitivity. It has a framework for defining what is wrong, all while being self-consistent, yet it is hard if not utterly impossible within the scientific framework to EVER confirm or verify truth (rather than fail to verify falsehood).

[@D.KlWA-aG]

@@slkjvlkfsvnlsdfhgdght5447 and some people dont understand that. You gotta start by defining things even if they sound obvious

[@AccretionGD]

the soundtrack of this video is so good

[@abhimanyukumar-qd6mc]

I truly loved the statement at the end of the video, and what a deep thought it provokes - ...'This is why we do science, to learn that everything is different to the way we thought it is. Until the day we truly understand the nature of reality.'

[@ArnavUmale]

2:55 my matter doesn't jiggle jiggle, It's cold

[@Slapbattler666]

LMAO

[@swaggychicken.]

Underrated

[@aceyyyyyy]

this has 11 likes rn it will be a multiple thousand likes comment😂

[@whatever4924]

😂😂😂😂😂😂😂😂😂😂😂

[@willkatching9219]

I'd like to fuse your atoms, for sure.

[@Jubeikas]

The Bluey cup at the end was amazing

[@columba1234]

Finally someone said it

[@mitracangalheiro]

actually its her sister Bingo's from the show ''Bluey'' 😁

[@realracing3specter295]

kids in my house love Bluey omg

[@MagGutier-re4od]

Bluey. Hahaha. Apple just auto corrected for me. That I when you know you made it

[@HamRadio95]

Was waiting for this

[@BoogermonkiBooger-ye7jw]

Because of this video, I made a whole presentation about grave stars. I got an A on the presentation, so thank you so, so much!

[@painterkira]

Nice

[@ryanmorrison8833]

Anyone else ever try to tell friends about Kurzgesagt videos? "There's this super cool thing, and it has nothing inside of it, but a LOT of nothing! Imagine waves in an ocean, but there's no water. Or something like that, I forget the details"

[@Cashman9111]

so... it's energy or nothing ?

[@matthewlawton9241]

It's got birdies. :3

[@GamerScotty]

I try explaining any of these videos and I get nothing but sighs and eyes rolling… wish I had more intelligent friends. 😅

[@user-xl6yo6gf8e]

@@GamerScotty My family can understand it, but I'm not good enough at explaining for them to believe what I say.

[@7HEMUFFINMAN]

I feel your pain

[@aaaabdallahali8094]

4:50 vacuum fluid needs its own video

[@Fish-m4i]

Yes

[@julybees]

Absolutely.

[@kindlin]

All he means is the vacuum fluctuations. I'm not really a fan of calling it a vacuum fluid, that implies way too much of the vacuum. It's always fluctuating on the order of Heisenberg's uncertainty principle, so it has a little energy everywhere, at all times, but that hardly makes it a fluid. Gases, solids, everything has energy everywhere it exists, this doesn't make them fluids. I might be missing something here.

[@parkergailey9625]

Yeh I got lost when he mentioned that

[@sir.nobody000]

Yesss

[@letscherkevin1857]

Awesome theory ! Two questions I have: - are black holes and gravastar mutually exclusive ? - what would happen if a black hole (if they are NOT mutually exclusive) or let's say a neutron star would colide into a gravastar ? How would the gravitation waves look like in this situation ?

[@ninja8217]

i second this

[@ninja8217]

@@itsoddsquad Would the black hole eat it?

[@rivercape982]

Im guessing the shell would stop that​@ninja8217

[@so_much_for_jj]

@@itsoddsquad bong /j

[@paul119]

What would happen to the inner part of the gravastar in this scenario is speculative. The gravastar, by definition, has an interior that contains a kind of "vacuum" or "exotic matter" that supports it against collapse. If a black hole were to interact with it, the immense gravitational forces would likely overwhelm the gravastar’s structure. The vacuum-like interior might either get compressed, distorted, or even erased by the extreme tidal forces. The energy released could be unimaginable, and the gravastar might no longer retain its original form. However, it’s important to note that these interactions would happen near or at the event horizon of the black hole, and much of the dynamics could be shrouded in unknowns due to the lack of a complete theory that includes quantum gravity.

[@Moongob-om9zi]

Got the 12.025 calendar, amazing artwork, incredibly beautiful!

[@krishpatel7181]

You, Kurzgesagt, have absolutely revolutionized my love for space. I was always a boy interesting in space, but so incredibly difficult as a child from a previously struggling family. But your channel made information like this so easily accessible. Thank you, for everything you do. Thanks to this channel, I am on my way to be an astrophysicist. PS: Absolutely fire background track!

[@DragonLover-u69]

Same!

[@arlynnecumberbatch1056]

yoo thats awesome! fighting!!!!

[@DataIsBeautifulOfficial]

I'm waiting for it to show up in the next Star Wars spinoff.

[@universaltoons]

🎉

[@aiwkwmwmwwm]

Caught data is beautiful in the wild, imma use a master ball

[@roronoazoro2025]

Didn't u alr leave another comment

[@timothytumusiime2903]

I'm waiting for actual black holes to show up in Star Wars .... feel free to correct me if they showed up in the EU

[@ShlokParab]

Imagine a gravistar version of Interstellar... Then maybe when we discover one in real life, and it would check out with the movie version; how could would that be!

[@saikatpanda6653]

8:00 We even "sort of" took a picture of them. The drama enclosed behind these two words are immense lol.

[@Hopppp]

what kind of drama? please share lol I need to know

[@greatestgrasshopper9210]

@@Hopppp The picture that they took didn't use actually light waves, but rather converted some radio wave values into pixels. Since black holes are black, the picture is of the accretion disk. It is a very low quality image, and is a blur of orange, with a little bit of the blur missing from the middle lol. The drama came because many people didn't believe that black holes were real, and so seeing an orange blur that is supposed to disprove their beliefs ruffled some feathers. Many accused the image of being fake.

[@sacr3]

​@@greatestgrasshopper9210 not necessarily, it is more so the fact that like what you said it's radio waves, but they used AI algorithms to mash together all of the data to formulate the image of a black hole multiple times, and then merge them together so to speak to create the one that you see. In other words we manipulated the data we received to make it look like a black hole, there was a lot of gaps that were filled in and we used AI algorithms to try and create these false black hole images and we essentially picked the best one.

[@Hopppp]

@ ooooh ok, I though it was gonna be some juicy drama between scientists so kinda disappointed ngl, thanks for the explanation though

[@sacr3]

@@Hopppp it's more so that the data they collected was put into an AI algorithm to formulate an image closest to that of a black hole, it did this multiple times and they had multiple images and they simply picked the one that seemed to match the most. In other words the image was very incomplete, it had a lot of holes that were filled in and it was fabricated in a sense where it was selected as the best image out of the pile that they received from this algorithm. A lot of folks are questioned about this because it's not a genuine image, it's a fabricated and guessed image

[@theiridiumgamer5225]

These are my absolute favourite types of videos, I utterly adore and live to be confused, floored and bewildered at something incomprehensible that I could never dream of imagining, being explained to me like how father explains the fundamentals of addition to his 6 year old child. Please make more of these types of videos, the craziness is part of learning and thinking creatively about the problems we might encounter.

[@ladders1]

Thanks for this video. I've come across the gravastar hypothesis before but never found an explanation that didn't require a degree in physics to appreciate, this video makes it much easier to grasp. I like the idea of gravastars, if only for the rule of thumb that an equation running away to infinity is a sign of a flaw in the equation.

[@blacksage2375]

That's the thing black holes involve infinities too. What is casually described as "breaking physics" is equations going into an asymptote to infinity. These gravastars use of infinity feels far more... convenient... though which reminds me that nature is under no obligation to be mathematically sensible and elegant.

[@benthomason3307]

"an equation running away to infinity is a sign of a flaw in the equation." to be fair, mathematicians used to think the same thing about negative numbers, a concept I still vividly recall struggling with as a child.

[@espinoname2988]

I think this explanation makes so much more sense than black holes. As I was going through the video it all seemed to click in. I just could never make sense of how a black hole would work, since it breaks everything we think we know about physics, but this makes a lot more sense. Basically an equilibrium state of enormous forces is reached.

[@MeecroSkills]

​@@benthomason3307 "used to" bruh negative numbers have been in math since 600 ad . how far back do we gotta go for this "used to"

[@AdamNovagen]

@@MeecroSkills 599 AD, I suppose

[@dominikbeitat4450]

OMFG, you guys made a video about my most favourite hypothesized stellar object ever, I can't believe this is theoretically happening, this may or may not be the best day of my life today!

[@nerijusurbelis2099]

This is i think my first time hearing about this cosmic object and only by watching this one video. It made me be very fascinated in it.

[@heybak]

I love probabilities!!!!

[@nikkhilkalia4512]

Wow, you have a 'favourite hypothesized stellar object' 😭😂 If this is the most fav, what are the others?

[@bladehoon]

@@nikkhilkalia4512 Leaving this reply here so I can learn too

[@TON__618.]

​@@nikkhilkalia4512I mean, basically every astronomy enthusiast has one hypothetical thing they love. For me, it's the concept of an infinite universe

[@grays42]

This is by far the weirdest concept I've ever heard of, and the idea of "superdense vacuum" melts my brain

[@guywholikesgoodmusic]

The best way to think about it is knowing that vacuum energy exists all around you. Just ambient, uniformly distributed energy that persists everywhere across the universe with or without the presence of matter. These gravastars just have an absurdly high abundance of that same ambient energy.

[@emilmottola6778]

Correct.

[@TheReal_GigaChad]

it doesnt make sense in the way that I thought "vacuum" was. I thought it was genuinely nothing, like, no matter, no energy, nothing. This means that the vacuum isn't really "nothing" as per say, but like undetectably small amounts of energy stretched out too small to measure? Please correct me if I'm confused btw.

[@asfandyar424]

@@guywholikesgoodmusic Well if that's the case then I feel like there should be a medium that exists even deeper than the regular vacuum energy and gravatar's high abundance vacuum energy itself because how else would they coexist in the same plane of the universe. a medium that might be akin to the fabric of reality itself, a more fundamental substrate.

[@soundsoflife9549]

Did all the matter get blown to a parallel universe? This video is full of hypothetical nonsense.

[@bojankostic1865]

Thanks!

[@kurzgesagt]

💖🦆

[@STA-3]

3:33 The "empty" being accompanied by the low pass filter hitting in the music is cinematic. Perfect.

[@Zlococoz]

Ok, that Bingo cup was the cherry on top of this already amazing (as usual, for kurzgesagt) video. Also, just want to point that in the Sleepytime episode of Bluey, the cover of the book where Bingo space trip dream begins, is drawn in the kurzgesagt style.

[@xymaryai8283]

yooo! i kinda noticed that too, i love that episode, it also reminds me of another suprisingly wholesome show (that i wont mention here heh) with a sleepytime scene in the stars and planets

[@Ω246]

I noticed the same

[@floot727]

9:23 my favourite part of the video, the way the music suddenly accompanies the storytelling blew my mind for a second

[@i_luv_marbled_bread]

Me: New year, new me! Kurzgesagt: do want some existential crises sprinkled with cuteness? Me: Yea! :D

[@shauryagg-tf9qc]

I'm in for some existential crisis too

[@syntheria]

@Najeeb_Gamer190 please don't advertise yourself

[@Definitelynotabot10101]

@Najeeb_Gamer190 ok, I wont

[@familyquek8316]

Melodysheep is more scary

[@PbeingXD]

@Najeeb_Gamer190 I’m thai and I can read that. You are just scamming people and you exposed yourself as to what you did in 1999

[@spinningbladez1982]

I love this, the back ground music is better, the animations are getting better and the style/color is getting better too

[@joelantunes151]

yup, do you know tha name?

[@bap8896]

@@joelantunes151 gravastars - Epic Mountain

[@jonaut5705]

@@joelantunes151 presumably it's composed in house

[@spinningbladez1982]

@@joelantunes151 if you look in the description it has a spotify playlist

[@ryoswolf]

@@joelantunes151 Gravastars by Epic Mountain. It was composed specifically for this video, but like all their other Kurzgesagt music, it is available for listening on streaming services.

[@user-8693ihxeefni]

Greetings to Kurzgesagt video uploader. I‘m not a native English speaker,this video is hard for me to enjoy without subtitles.PLZ consider adding subtitles in the near future.I express my sincere gratitude for adding subtitles

[@theominouspigeon]

they might be added later

[@qu9353]

If ur German then there is a German channel and also ur phone might have live captions built in, if not try checking ur app store

[@JustPlainRob]

As a native English speaker all my life, this video is also hard for me to enjoy because the concept itself doesn't make any logical sense.

[@angelcollina]

@@JustPlainRob Outer space is truly bonkers.

[@elvastan]

What language do you speak, may I ask? Kurzgesagt has loads of channels in loads of different languages (Spanish, Korean, Japanese, German, French, Hindi, Arabic, etc). They might have one for yours

[@nathanieldonigan3659]

Love to see a LIGO shout out! I live very close to the washington LIGO facility, and my friend's father worked there. I was in middle school when we proved the existence of gavitational waves, and I was so excited to live so close to such an incredible discovery.

[@alxporrini8563]

That bingo mug at 10:14. Nice reference to Sleepy Time. That's totally her face when she was going light speed on that comet.

[@eclipse_darkpaw]

I was looking for this comment, i was hoping someone would mention it

[@tianzr2009]

"Sleepy Time"is my favourite episode of Bluey💫🌠🌏🌕🌞

[@RichardCox0]

Sleepy Time is honestly a legendary episode that I recommend watching to everyone.

[@WilhelmsRepresentative]

The holst music is greatly timed in that episode. Stupid autocorrect put holy instead of holst

[@LongPeter]

But why does Bandit own a pair of undies?

[@maceoryan-hess9235]

The amount of Kurzgesagt intros that include "May change our understanding of the universe" in some form has led me to understand that we know absolutely nothing.

[@ST0AT]

The moment you realize you know nothing, you are ready to learn anything.

[@1000-THR]

The only thing we know for sure is that we know nothing.

[@roberttalada5196]

Yes, this stellar object is made of mostly nothing.

[@Jeonsaryu]

Socrates agrees!

[@Donbros]

I mean you know infinite lot and close to nothing at the same time relatively

[@williek08472]

I love how astronomy just keeps finding weirder and weirder stellar objects

[@EddieNoon]

Yeah lmao. You thought black holes were weird? Gravastar. You thought neutron stars were weird? Pulsars? Wait until you hear about Magnetars! (Well, technically, they're just theories, there's no concrete proof they exist. But, just the idea that something like that is possible or even feasible...!)

[@boycefenn]

​@@EddieNoonTheory doesn't mean what you think it means

[@Nuclearburrit0]

Are we SURE we don't live in a fantasy universe?

[@Vulcoro]

The beauty of humanity.

[@purdysanchez]

Wait until you hear about the leprechaun unicorn star.

[@MrFEAR-vq2yw]

Lmao the Bingo mug caught me off guard

[@NickAndriadze]

Honestly, these ''explaining bizarre theoretical cosmic objects and anomalies'' videos have to be some of my favourite from Kurzgesagt.

[@Dekuzan]

bro think he smart saying this

[@kidclover6192]

Who hurt you

[@zlushie]

Why is everyone attacking this person

[@unspokenlegendyt3328]

Love the complex nature of space! There’s still so much we don’t understand about our universe, what’s covered on this channel doesn’t even scratch the surface of what we know.

[@WobblesandBean]

As two ducks in a trenchcoat, this channel really speaks to me. Stay safe everyone, be kind, and don't fall into any singularities.

[@RespectfullyBiasedReader]

m-my weekend plans

[@universaltoons]

🐟

[@CrazyDutchguys]

As two trenchcoats in a duck, this channel really speaks to me. Cause chaos, destroy, become one with the singularity.

[@lukasjetu9776]

As two singularities in a trench, this channel really speaks to me. Break physics, obliterate everything, and marry your cousin.

[@playyourturntodieatvgperson]

but faling into singularities is so fuuuuuuuuuuuuuuuuuuuuuuuuun. humph.

[@AMGamingX_YT]

These videos are awesome man! Keep up the good work!

[@partymarty1961]

The music metaphor where the Sousaphone and Trumpet also played in time and key with the score was so satisfying, I had to rewind and watch that part of the video several times to appreciate it!!

[@pamesankaese]

I like that the music is an upbeat remix version of the music that was used in the black holes size comparison video. Really nice touch 👍

[@foogriffy]

whoever they hired for the sound in these videos is a real professional. maybe worked in film before

[@dangerfly]

Nope, it's awful. The beats compete directly with and drown out the narration.

[@CyrusLagom]

​@@dangerflyWhy are you complaining about it on every mention of the song.

[@marcush-j5900]

I’ve missed kurtzgesagt videos with this amount of insane quality. Thank you

[@gachabloxgirl3958]

Omg i'm IN LOVE with the soundtrack and animation for this video!

[@pxlheart6237]

Loved the music analogy for this, and the music syncing with it was a phenomenal touch ❤

[@mechez774]

A gravastar black hole collision sounds like a bass drum, a gravastar gravastar collision sounds like a gong, so what does a black hole black hole collision sound like?

[@decomposedcorpse5186]

@@mechez774 You misheard. Black holes colliding sounds like a bass drum. We've recorded it. Of course it's at such low frequencies that we can't hear it, so for humans to hear it we have to increase the frequency, and it kinda sounds like a water drop lol

[@kirimaru73]

Learned a new way to politely tell someone that there is a big nothing inside their head. "You are just like a gravastar in the sky."

[@EchoL0C0]

More than nothing, a dense nothingness lol

[@VictoryOtp-YT]

Kurzgesagt - in the top 5 channels all time on KZbin IMO. Never before in human history has knowledge this complex been as readily accessible as it is from this channel. The animations, music, and actual source material make it fundamentally fascinating. Thank you for all the content and inspiration its provided.

[@SupremeBrawler07]

The background track does go really hard also featured in kurzgesagts largest star size comparison video deep track

[@l0gp33lby]

Loving these frequent uploads. Not only that but the amazing quality and production of them. Keep it up

[@Equixal]

4:56 if vacuum has inherent energy and the universe is expanding to create even more empty space/vacuum, doesn't that mean energy is being created?

[@jupitereuropa-e3w]

Very interesting question!

[@Brown95P]

If dark energy is supposedly the most abundant thing in the universe and the vast vacuum has inherent energy, wouldn't this vacuum energy be dark energy? Point is, I sure would like to know how this relates to everything else in the universe.

[@celeria]

When you take a balloon and blow it up do you get more balloon?

[@user-cd6vy2jg6f]

Energy is not always conserved. It is only conserved when there is temporal symmetry in the Hamiltonian. And this isn't necessarily the case at the cosmological scale.

[@Junnneee]

​@@celeria^^^This! If a duck on a pond moves around, does that mean there's more water?

[@Fabianvolf]

2:49 Idk I'll ask my ex tho

[@waleedabdullahkhan5706]

Damn

[@lukasjetu9776]

Damn 2

[@MawDaws]

Damn 3

[@ahmed-tira]

Damn 4

[@deadlystalker7483]

Damn 5

[@Mormodes]

The music in this is fire, great job.

[@Julzaa]

0:13 so.. what did you mean by "they could kill black holes"? You didn't say!

[@jamesmnguyen]

Not literally, but more like "killing" the idea of black holes.

[@J0hnB09]

They are a theoretical object to replace black holes.

[@theshadowking3198]

9:05

[@Julzaa]

@@theshadowking3198 that doesn't say?

[@theshadowking3198]

@@Julzaa i mean it said it sounded like a gong the fizzles out

[@Randomize12345666]

Omg the theme song is such a banger, this needs a remix with a sick drop after some voice over soundbite

[@sungyun3815]

Gravastars, often called the "evil twins" of black holes, present a fascinating alternative theory in astrophysics. Unlike black holes, gravastars are thought to lack singularities or event horizons, featuring a core filled with dark energy and a thin shell of matter. This concept addresses some of the mysteries surrounding black holes, such as the information paradox, offering new ways to understand the universe's most mysterious objects. Gravastars exemplify the limitless creativity of scientific exploration, inspiring us to question, hypothesize, and expand our knowledge about the cosmos. They remind us that even in science, there’s always more to uncover.

[@medeasolon-h6q]

wow

[@sayedmuzz5727]

Please make a video on thorium reactors.

[@ChromicQuanta]

HOW HAVE I NEVER HEARD OF THESE BEFORE? This is incredible!

[@jneal4154]

Because it's not real. They are presenting sensationalized fringe hypotheses and pretending like they are representative of what astrophysicists think. It's not. If you tried to make these claims to a real astrophysicist they are liable to laugh in your face the moment you start describing "vacuum fluid" to them. You'll have better luck getting them to accept a geocentric model of the solar system than getting them to accept the existence of aether. Position is relative, not absolute. There is no need and no evidence for an aether. This channel needs to go back to carefully qualifying their statements. They have become extremely unscientific lately.

[@jneal4154]

Maxwell's big realization was that electromagnetism can propagate through free space without any physical medium. You can have waves without a medium and gauge field theory (the mathematics describing the standard model) does exactly that. There are some fringe hypotheses proposing aether to explain some phenomenon, but critically there's essentially zero debate about whether a physical medium is required for waves to propagate or carry momentum. The answer is resoundingly no.

[@bez5144]

I love how the universe has counterparts for everything that equally rivals at being amazing.

[@shanetuma3845]

Maybe. These things are purely theoretical.

[@krystami5789]

​@@shanetuma3845 their existence, not so much, them rivaling? Like, yes they aren't literally battling. Unless I am proven wrong and stars are legitimately competing at which one can attract the most witnesses or something. Like if we find out they are actual entities with thoughts. But that is just a theory, unlike the actual fact these things exist. We just might know certain details, just as we don't know what's inside a black hole.

[@raizors1331]

@@shanetuma3845 Gravastar is as possible as Blackhole, though. In fact, they are both ways to explains the same "small* invisible celestial object with enough mass to toss other massive celestial object around", which we can observe.

[@scottsieke7948]

10:14 Is that Bingo from Bluey?

[@TorpisoulYT]

Looks it. There's an episode (and book) called Sleepytime. In it, Bingo goes on a galactic journey, finding different planets with different warmth. Her mission is to wake up in her own bed, like a big girl. Source: Parent and Bluey fan 🎉

[@nicholasalley7324]

​@TorpisoulYT thats my daughters go to bedtime episode

[@StevePuma]

​@@TorpisoulYT Holy crap. That's even deeper than I thought. good catch.

[@ryanatkins5736]

Bingo!

[@TorpisoulYT]

@@nicholasalley7324 we've got the book, but it's quite large and has fold-out pages... Tricky when you're horizontal.

[@MeatyChunks]

Epic Mountain going hard as usual on this one.

[@timokraus4882]

10:05 this is why the European LISA mission exists, can’t wait for that

[@tygical]

9:24 OH MY GOD THAT DETAIL WITH THE MUSIC WAS SO GOOD

[@realkrzaku]

Yes, that's the important part. The electronic music, supposed to take your mind off of how brain dead their attempt at an explanation is.

[@tygical]

@realkrzaku i mean i study physics and i'd say it simplifies it enough for a layman to understand but it doesn't oversimplify to the point of being inaccurate

[@PLMCH19]

5:38 In other words, One Hundred Tredecillion, or 100,000,000,000,000,000,000,000,000,000,000,000,000,000 times the amount of energy.

[@Henry2-bj1ro]

Unironically, thank you for releasing this right before I did a school project on black holes

[@fireembliam9090]

10:20 Bingo mug.

[@keaganron]

Yea

[@That_1_Poseidon_demigod]

Real

[@RxsePolly]

I was looking for this comment

[@CentauriBros]

@@RxsePollyMe too. I was going to say that but I was looking to see if anyone had already said that. I love how Kurzgesagt throws bits of pop culture into their videos.

[@prettseralexey5759]

music bangs too good, I was trying to focus on the actual information, but its hard, when the banger is that awesome. Need to wants it again haha

[@crowlsyong]

8:02 the animators are so cool. i. love that they modeled the animation from the actual picture. cheers

[@bentdev]

Thank you for putting it all together. Exceptional!

[@georgestoyanov5387]

7 min in and the video & music are next level. Kudos to kurzgesagt for staying consistent on content & improving in video quality

[@dangerfly]

Totally wrong music for being able to hear narration. It's not a video game.

[@Lineless0]

So it’s basically an indestructible wandering space bomb with that can explode with the force of a hundred supernovas

[@marioreaz]

2:24 We need Kurzgesagt releasing this bangers to Spotify 😭

[@MemeTroll2385]

REAL

[@GamerTA13]

They do, blue mountain I think the channel's name is

[@ryoswolf]

@@GamerTA13 Epic Mountain

[@ZratP]

I don't know about Spotify but if you look for Epic Mountain artist it may appear. At least it does on KZbin Music

[@RobertoMarquezJr]

If you like this listen to "human music" from Rick and Morty

[@vincenttrigg4521]

Love the music for this! Its got such a beat!

[@just_mdd4]

$60 tells me that Gravastar is probably the name of a metal band, lol.

[@JohnnyMilSmith]

Ooh, you're upping the stakes today!

[@JohnnyMilSmith]

I just checked on Google and, once again, your bet is profitable!

[@just_mdd4]

@@JohnnyMilSmith I really should be a betting man, lol.

[@parzival-firsttothekey4299]

Apparently there was one Greek band from 2017-2019 with that name 😅 Edit: and an electronics designer/Manufacturer with cool looking space themed computer accessories. Now that I think about it, the name's pretty cool, but I had never heard it before this video.

[@windowboy]

David Bowie last hurrah was pretty close

[@ilovesaintlucia]

7:00 You’d be extremely dead Not just dead dead, but deader, almost the deadest death can be

[@scratchymarcus2517]

True, but instead of more empty emptiness, I think it’s just denser nothingness, does what I call it make sense? I dunno.

[@noli-timere-crede-tantum]

9:18 "You can think of them as the music of cosmic cataclysms" - Ah, now it makes sense.

[@tropicalhorizongaming5459]

Everytime I see a new video like this it reminds me how incredible the universe we live in is, just imagine what kind of crazy stuff we’ll discover in the future

[@kadomcfrado5688]

6:35, you know what else is massive? That low taper fade meme

[@charlietr9815]

That’s crazy

[@christianmiddelaarvan2377]

I thought he was going to say "your mom"

[@governor64]

THE BLACK HOLE SERIES IS BACK

[@waleedabdullahkhan5706]

It's so back

[@ambion19]

What are you talking about, they've only made one or two black holes videos. Only one or two!

[@governor64]

@ lmao

[@aksharaghav9657]

These space videos just keep getting more beautiful and interesting!

[@gloriousradio]

Loving the Bingo mug at 10:15. Now we just need you guys to get a cameo in Sleepytime!