Oh goodie, some existential dread before I go to bed!

@pbsspacetime

2 жыл бұрын

You're welcome!

@Wave1dave

2 жыл бұрын

sweet dreams

@vforvenom2158

2 жыл бұрын

Hey that rhymes! 😀

@potsnug

2 жыл бұрын

Bars 🔥

@darger3

2 жыл бұрын

😂

The idea that our whole universe could exist inside a black hole is pretty amazing. It really reminds me of the meme about how life is formed from all of the elements created from a supernova, and ends with, “If you explode something hard enough, sometimes dust wakes up and thinks about itself”

@stormyenglish_23

3 ай бұрын

i NEED THAT MEME RN

@cookinbooks832

3 ай бұрын

if you leave some organic matter in the goldilock zone of a star it'll start thinking about itself eventually...

@AckzaTV

2 ай бұрын

Dust didn't wake up. Dust compressed into a ball with goo and the goo woke up.

@ChrisBCartagena

11 күн бұрын

Are whole " visible " universe.. the rest is INFINITE!

So wouldn't this be a new way to think of multi-universal theory? Because it would mean, at least in theory, that there's potentially a greater/outer universe that spawns black holes that contain nested universes within it. Or it would mean we exist in a fractal reality where instead of turtles it's black holes all the way up and down.

@simoncline255

Жыл бұрын

I think it maybe s hyperlink universe series like Internet rather than a nested or fractal universe series.

@Sporeboy87

10 ай бұрын

@@simoncline255fractal because potentially it’s infinite

@Andy_Babb

9 ай бұрын

I just commented something almost identical on another video. That’s exactly what I think in my very limited capacity as a scientist lolol

@HelloThere.....

8 ай бұрын

@@Sporeboy87 no fractal because it repeats itself at high levels of resolution. Like a square inside a square inside a square. As the resolution increases or you go "deeper" there are more iterations of the thing at different scales. The thing about that though, is that the surface area of a fractal is infinite if you iterate it an infinite amount of times.

@andiwestcott7187

8 ай бұрын

"Its turtles all the way down" was exactly my thought as this video wrapped up, lol

Thinking about our existence is crazy as it is .. thinking about the universe’s existence is just next level mind blowing craziness

@r.a.l.p.h

Жыл бұрын

We are the universe. So we literally are the universe being conscious of itself.

@ikhlashasib8256

Жыл бұрын

@@r.a.l.p.h Or so you one of those people, everyone is just atoms and molecules huh? So if someone takes a life it means nothing because they're just rearranging the atoms right?

@ShadowLegend300

9 ай бұрын

@@ikhlashasib8256 nobody said that lol

@JVCA44

3 ай бұрын

@@ikhlashasib8256 does life really need a meaning?

@ikhlashasib8256

3 ай бұрын

@@JVCA44 Lol, are you really this illogical mate? Every thing in your body has a purpose, everything in the world has a purpose, everything in the universe has a purpose but you? No, you have none and life and everything that exist is just meaningless 🤦‍♂, bro, well why do anything? why go to work, why do good? why go to school? why do anything if it's all meaningless?

To me, the most incredible thing about this is that people who study this subject can walk around freely without their brains exploding. What a confusing subject.

@LegendaryBrandon1

2 жыл бұрын

It just feels like standing in a mirror surrounded by mirrors

@ftrogs1230

2 жыл бұрын

Not really. It all makes sense if you truly understand geodesics, because that is the basis of all the theories Matt is referencing . I will admit it requires a good imagination tho

@notbuccaneers8727

2 жыл бұрын

Thats because there is a thin lining of coffee between their brains and their skull, which cushions the impact of explosive thoughts, which keeps their cranium intact.

@chechong2439

2 жыл бұрын

Their heads explode on this side of the black hole event horizon then reforms on the white hole side.

@educatedguest1510

2 жыл бұрын

Very few know that Einstein was pacifist and his boss in Germany was a creator of the first chemical weapon. Einstein backed Schrodinger's work on event horizon only to get him out from WWI trenches where he wrote his equation (though Einstein told himself that it was just math model having no reality). Recently Vivian Robinson, co-inventor of electronic microscopes, pin pointed up to the line Schrodinger's math mistake. If you like such stuff read more in Bob Lazar Cutting Edge.

If a black hole is pulling in spacetime, then from the inside, wouldn't it appear to be gaining spacetime, and therefore appear to be expanding?

@marcusfurlow8332

2 жыл бұрын

No.a black holes is in the fabric of spacetime, quite strange object that man will never comprehend,never would know what's goes on insides a black

@Bikewithlove

2 жыл бұрын

I love how both of the first replies to this comment are like “NO.” It’s a great question. It’s entirely possible.

@tylersmith2792

2 жыл бұрын

It could be. If there exist pockets inside of event horizons; and the variables of size, intensity of collapse/expansion.... we may very well be the current "too substantive" to be squashed out of existence instantly. In other words, gravity is the illusion that mass bends time, when it could just be: we are inside of an event horizon that is failing miserably (currently) to squash us out of existence, because we haven't dissipated enough yet

@freefall9832

2 жыл бұрын

It's about time, so yes!

@farhanaditya2647

2 жыл бұрын

@@Bikewithlove But you're the second, so there's only one.

Black holes and the entire universe and anything and everything about these subjects are actually some of my very very very extreme favorite subjects of all time.

@sd5458

3 ай бұрын

Oh that's fascinating.

I like this idea because if true, it also answers the multiverse question. There are lots of black holes and therefore lots of little universes absolutely everywhere. And they could contain their own infinity of black holes. It all makes sense.

@uvuvwevwevweonyetenyevweug5884

4 ай бұрын

But then there is no end to it ? It's just black holes inside black holes inside black holes ?

@somethinsomethin7216

4 ай бұрын

It doesn't really make sense

@Bella-vt7ol

4 ай бұрын

@@somethinsomethin7216 ​​⁠ I know this is a terrible argument/response but if IF its true...the truth doesnt care if you dont understand it/if it doesnt make sense to you...

@somethinsomethin7216

3 ай бұрын

@@Bella-vt7ol you are right anything is possible in the realm of probability. But what is reasonable? It is insane, to think that we are very very very lucky, to have a universe that caters to life existing, but not only that, but life with consciousness. From a bottom-up perspective it is insane how we got here from natural means, from simplicity all the way to complexity of consciousness. Or the other hypothesis is there already is an eternal transcendent consciousness that created a universe with specific conditions to host life with consciousness. So more of a top-bottom approach

@That0Homeless0Guy

3 ай бұрын

​@@somethinsomethin7216It does and it doesn't. I think the hardest part to get your head around is that space and time might not be limited in scale in the way we understand and observe it. That a universe might be able to contain infinite universes within itself equally if not larger than itself. We think of space and time in it's physically observable state from our own perspective of 4 dimensional space and time.

So, this video discusses the possibility of our universe being inside a black hole. I've also seen something about our universe possibly being on a 3D event horizon of a black hole in a 4D universe. I don't know if there's enough there for an episode, but it would be cool for Matt to discuss it.

@anywallsocket

2 жыл бұрын

Exactly, everyone keeps suggesting there is a 1:1 correspondence here between event horizons and cosmological ones, but the issue of dimensionality is not discussed.

@besotoxicomusic

2 жыл бұрын

I think they’ve already made one. Holographic universe I think.

@gab.lab.martins

2 жыл бұрын

At this point, there's kind of no question that there are 4 or more spacial dimensions. The question is why we can't perceive more than 3. But what is really cool is that, if someone or something was able to live outside our 3D space, they'd likely see through time, i.e. see "past"/"present"/"future". Of course that brings up whether things are pre-determined or if we can influence the future, and how much we can influence the future, but it's a really cool thought experiment.

@aerophage

2 жыл бұрын

@@Lord_and_Savior_Gay_Jesus We don't know that it started from a single point. It could be infinite in size and was simply much denser than it is now.

@aerophage

2 жыл бұрын

@@gab.lab.martins Is there any evidence that extra spacial dimensions exist other than being an artifact of mathematics?

Just wanted to say, I'm 70, and started speculating a decade ago the analogies between the collapsing space inside a black hole, and the steadily expanding space-time universe in which we live. I've not known who or how to ask, but I'm so happy to hear it articulated. Now I can die in peace, knowing that speculation is in good hands. Thank You Matt.

@d.j.wattson4804

2 жыл бұрын

It’s amazing how so many of us stumble upon theories that are later developed by people who actually study the science of that subject. I posit there’s a large number of average people out there that are closer to reality with their theories than they realize.

@thelazerproject

2 жыл бұрын

@@d.j.wattson4804 true

@alansouter6713

2 жыл бұрын

Time is just a beginning greater things still too come my friend

@zxqu2622

2 жыл бұрын

lmao

@danielholth

2 жыл бұрын

You are awesome Bruce :)

I’ve always wondered about this. Mostly because of the theories behind the Big Bang. I always thought that maybe that’s what happens inside a black hole.

Wonderful to see we haven't run out of theories yet.

This is exactly the way I imagine our Multi-verse looks like. The fractal structure of never-ending hard to put in words beatiful infinite reality we're living in.

@vhawk1951kl

2 жыл бұрын

When you use the term "the universe" what exactly do you mean or what exactly are you trying to convey when you use that term? Your problem and it is a very real problem, is conceptual and the fact that you cannot see that demonstrates what your problem is

@tudordima3468

2 жыл бұрын

@@vhawk1951kl I said "multi-verse" or "reality", I didn't say universe. For me "a universe" is just another iteration of a never-ending process. Can I describe that process (fractal multi-verse)? I could describe how I imagine it, but not in the youtube comments section. Can I "demonstrate it?" No. And most likely no one will. Ever. Because it's physically impossible to experiment that.

@adityanath3570

2 жыл бұрын

@@tudordima3468 exactly, that's how I think it too. You can somehow and I repeat somehow imagine it inside your brain. But, explaining it with words is near impossible.

@harrkev

2 жыл бұрын

Too bad there is not a shred of proof. You are a man of great faith to believe in an infinite amount of something. I have seen no evidence of any physical object being infinite.

@adityanath3570

2 жыл бұрын

@@harrkev is space even physical tho? It's space, coz it is space.

Fun fact, black holes get less dense without limit the bigger they are, because they have a radius r = (2G/c^2) * M directly proportional to their mass. For example, a black hole with the mass of our universe would have a Schwarzschild radius about the size of our universe and a density about the density of our universe.

@assainisateur

2 жыл бұрын

​@@promogames_ Is this supposed to be an insult? On this channel?

@monkeyman1282

2 жыл бұрын

@@assainisateur we’re all nerds in our own ways.

@thepudge6953

2 жыл бұрын

The universe is black so…

@faresbarriadventure2933

2 жыл бұрын

@@promogames_ BE NICE TO PEOPLE

@jskratnyarlathotep8411

2 жыл бұрын

did you mean "observable at this time period universe"?

This idea just makes sense to me, I've always had a gut feeling that reality is a fractal. And being inside a black hole makes sense

@MatteoPrezioso

8 ай бұрын

Tell Rocco Siffredi about it.

@dan7291able

6 ай бұрын

i mean, it would certainly explain why space is "black" lol

@silvercloud1641

6 ай бұрын

I like black holes. The ones in space too.

I wonder if black holes are creation points of new universes. As far as we know big bang came to be from extremely hot and dense point, so since the center of a black hole is also so dense that it’s volume is almost zero, maybe black holes just gather matter to the point it reaches critical mass and expands to a new universe

@devdecker7812

6 ай бұрын

But they don't expand , and it implies to me that there is no multiverse all the "universes" exist together in the same realm and rules

@devinc1748

5 ай бұрын

DAMN

@legionivfelix

4 ай бұрын

​@@devdecker7812They do expand. Super massive blackholes.

@stormyenglish_23

3 ай бұрын

​@@devdecker7812take that L

I'm really glad you mention the infinite nesting at the end! It was bugging me the whole time. If the black hole contains black holes, well, then unless the one we are in is unique and the ones inside it are different, it means universes are fractal.

@MouseGoat

2 жыл бұрын

which is actually one of the things that really speaks for this idear. fractals show up in math all the time, and all over the place in nature. fractals is the most common thing in existence. But my min is breaking just trying to question what would be weirdest, a universe that has a clear start/end or a never ending one. but Infinity is for me way more understandable than true nothing. tho also am pretty sure true nothing and Infinity is the same thing. Often people against science say: "but the universe could not come form nothing" and it kind of baffles me that so many people are cocky enough to believe they have any clue what true nothing can and cant do. People might think they have a grasp of what "having nothing" means but no, no one has ever had nothing, theres always something. to even make something that gets close to what true nothing is has yet to be achieved. We have invited 0 but honestly 0 is such a bug in math, like the fact we dont know how to calculate 1 divide by 0 seems to me to point at the fact that 0 is not a real number just like infinity is not a real number but a concept.

@jimmygriffiths

2 жыл бұрын

@@MouseGoat Really enjoyed reading your comment, I hope i can add some more fuel to your fire. So before I get into it, vsauce has a video on infinity that's really good. Talks about infinite sets. Secondly, most scientists would agree this universe has a clear start but no clear end. Now, to get right into your comment. Our understanding of the big bang goes back to fractions of a second after the universe began, but not all the way. There is this little period at the very beginning that we can't really account for. Now, our equations tell us that this beginning was infinitely small and dense, like the singularity at the centre of a black hole. This doesn't mean it was - usually divide by zero stuff or infinities popping up mean the maths is no good, rather than a literal description of reality. Inflation is the part of the big bang that people like roger penrose take issue with. There isn't really any evidence to suggest we came from nothing, it's just a natural assumption that if we came from something very, very small, then that must have come from something smaller and so on til you reach 0. But, as zenos put forward in ancient grecian times, you can never slice down to actual 0!

@betterlifeexe4378

2 жыл бұрын

yes. although it may be more meaningful to say that fractals exhibit many of the properties that tend to be present in sufficiently complex and interrelated systems, such as our universe. I'm of 2 minds, as fractals are mathematical and the universe physical, it's difficult to say which is a category of the other.

@betterlifeexe4378

2 жыл бұрын

those of us who would like to emphatically thumbs up this video several times, and who take infinity seriously, should form a social group of some sort. I would very much like to have many conversations on such things.

@betterlifeexe4378

2 жыл бұрын

@@MouseGoat yah nothing doesn't exist because by definition it's nothing. once you have an idea of something, like the idea of nothing, you have something. I think this causally and statistically means that there should be either : A: an infinite collection of all possible combinations of all possible things, which would inevitably stretch beyond our current definition of what is possible or B: an arbitrary (and statistically speaking very large in relation to our observations) set of possible things, that we should never assume terminates just beyond our understanding. these things may be functionally indistinguishable from the perspective of everything in existence. thoughts?

This idea just makes me picture the ending of the first Men in Black movie where a (our?) galaxy was contained inside a marble in a game being played by larger beings.

@braydonattoe2078

2 жыл бұрын

I think about this kinda thing all the time. Like what if our entire universe and existence is just the equivalent of an atom in an infinitely larger universe which we'd never be able to see because the scaling is so great we wouldnt be able to decipher or even comprehend its existence

@mamoros56

2 жыл бұрын

So glad I'm not the only one with these crazy thoughts either! My version is that what we call our universe is just one cell in a body in an infinitely large (from our perspective) universe. Likewise, one atom in our existence is an entire infinitely small universe to someone else... and so forth, in both directions (larger and smaller). Is this what physicists mean when they talk about other dimensions? 🤷🏼‍♀️

@notme2day

2 жыл бұрын

What if we're in only the most recent big bang? Just as galaxies crash into each other and black holes grow and swallow everything. What if two black holes grow so large and come together, boom,big bang. A cycle that repeats every 100 ish billion years give or take. Just a thought for when you can't sleep ... sorry. ; 》

@parrot2134

2 жыл бұрын

@@mamoros56 I like to think a little darker, that the earth is a "damaged cell" and it's like humans will cause issues to the larger being if we spread out into the universe. Just shower thoughts

@chriscourtney3713

2 жыл бұрын

@@mamoros56 and we are cancer eating away at the cell and trying to spread to other planets and in time spread to other universes destroying every planet we move to by just simply living.

Wow, what an interesting episode! Thanks everyone who made this!

Great presentation Matt.

Just reading these comments, I feel so humbled and appreciative of all our scientists and space enthusiasts. I have little knowledge beyond astronomy 101, so I basically have no idea what everyone is talking about…but I want to learn!

@mixz9929

2 жыл бұрын

Well son soon you'll start getting hair in funny places , and you're gonna start thinking about girls 😆😆😆😆 then you'll realize all hoe's black , white whatever they're pretty much the same and you'll love em all .😆🤟🏼🤟🏼

@crandonborth

2 жыл бұрын

Same

@underthetornado

Жыл бұрын

The hole thing is quite confusing....lol

@gby1320

Жыл бұрын

@@underthetornado I think we are in a blackhole universe which is inside another blackhole universe inside another black hole universe inside another ....... And so on.

@arkjade7715

Жыл бұрын

@@underthetornado XD

It gives me chills that there are so many others that have had this same thought. Life is such an incredible experience!

@menthols4625

2 жыл бұрын

It's just one of those things that when you think about it, it makes perfect sense, but there's no real way to prove it. It all fits together so nicely. Maybe all the matter absorbed by a black hole continues to build up and build up until its mass reaches a breaking point, then in a huge explosion the big bang occurs all at once, being released as a white hole.

@AboveEmAllProduction

2 жыл бұрын

@@menthols4625 which mean that every single black hole in the universe is a pathway to a completely different parallel universe. Jesus there's billions of them

@dimtriosk9504

2 жыл бұрын

We are many indeed, it isn't very backed, and it is just a theory of thoughts. After all, it is not something we can test, not anytime soon at least. Hopefully at some point humans may be able to bend physics to enable such testing. The saddest part is, we are extremely far from that point, so us who have been thinking about this, will never have our answer, sadly. I mean such a theory if even remotely to factual, it could potentially answer also a significant number of questions regarding the "big bang" as well. Lot's of great stuff.

@Tubueller

2 жыл бұрын

Deep down we know the truth.

@gianpa

2 жыл бұрын

Yeah I always thought this was the case, it's almost obvious to me... The problem is proving it...

First time watching. I saw you on Star Talk and figured I'd check it out. Now I need to add Space Time to my playlist. Great video!

@Giantcrabz

17 күн бұрын

i wish I could rewatch every episode from scratch now, you're in for such a treat! The earliest episodes are a bit rougher production but still brilliantly written

It would be super cool to go into an event horizon of a black hole and into a singularity and not die, but instead be transported into another universe. Maybe that's when we meet new life. Maybe advanced reptiles instead of advanced mammals. Or maybe Elder Gods from H. P. Lovecraft's Cthulhu mythos.

@chrisPain07

5 ай бұрын

Lol that'd be sick

@selvaa1592

3 ай бұрын

You would probably die, but your matter would make it through!

@iCookCrystalMeth

3 ай бұрын

@@selvaa1592worth it

if the universe were inside a black hole would we be able to detect matter (or energy) leaking out due to hawking radiation? what would the shrinking of the black hole look like from inside our universe that is in the black hole?

@mariusbendiksen163

2 жыл бұрын

Accelerating inflation?

@jogleby

2 жыл бұрын

That's what I'd like to know. I'm assuming it would be energy leaving the system, so it would look like a negative energy with the daughter universe, and that could make the theory falsifiable. However, these video have taught me that I know nothing about physics!

@bsadewitz

2 жыл бұрын

Not like I have any real idea, but perhaps it is happening so slowly we have no way of detecting it.

@AboveEmAllProduction

2 жыл бұрын

It wouldn't be visible at all to us, since everything stops for infinity at the event horizon, from outside the event horizon. So we would never see anything

@c.a.7058

2 жыл бұрын

@@jogleby I think that the "inside a black hole" argument requires the "black hole = white hole" assumption he mentions at the end, in which case Hawking radiation is balanced by cosmic background radiation absorption. So probably the answer is that for it to be possible that we're inside a black hole, then there is nothing to detect as total energy stays constant.

Who does the audio engineering? I've always admired their work.

@davidparadis490

2 жыл бұрын

It's PBS, not some homebody youtuber...they have resources as good as any media operation in the world

@easternlights3155

2 жыл бұрын

@@davidparadis490 That a person gets paid for a job doesn't necessarily mean admiration for said job (if it is done well) isn't in order.

@alexanderinsubordinate1861

2 жыл бұрын

@@davidparadis490 god I hate homebodies

@DemonKyle

2 жыл бұрын

@@davidparadis490 An individual or group of individuals still have to mix the audio, and they still need the skill to do it well. It is fine to admire their work.

@Tabu11211

2 жыл бұрын

@@DemonKyle thanks, what strange reactions to my comment. Just because it's PBS doesn't mean there aren't humans doing the work. Wtf?

This has become my favorite space theory of all time, first because it would kinda make sense, and if proved true, it would answer so many questions while also opening the way to a whole new series of thoughts and discussion on what's out there, beyond our bounded universe.

"Your videos always leave me in awe and eager to learn more about the mysteries of the universe. Thank you for fueling my curiosity. "

Cosmology seems like a path straight into madness, and I'm enjoying every second of it because I'm nowhere near smart enough to understand it all.

@cykeok3525

Жыл бұрын

Taking the time and effort, and having a good tutor, can help us understand it. At that point, after attaining better understanding, I think the surprising thing will be that it's *still* a straight path into madness.

@useyourbrain6937

Жыл бұрын

Or a path to enlightenment. Your choice

@cykeok3525

Жыл бұрын

@@useyourbrain6937 Maybe they're not so different, when seen by others from the outside :D

I think it's plausible, but then, when we've created micro black holes with the LHC, it's also plausible that inside that micro black hole existed a micro universe that experienced the big bang, infinite time, and the delusion of all existence, in what was a fraction of a second for us.

@sardoniclysane

2 жыл бұрын

Have we actually created micro black holes? I didn’t think we had.

@JesusMartinez-gx7bh

2 жыл бұрын

Good point 🙃

@damn_right_man8606

2 жыл бұрын

But there were no black holes created in Cern.

@jerardogonzalez007

2 жыл бұрын

Micro black holes have never been created nor detected. Because they don't even exist

@damn_right_man8606

2 жыл бұрын

@@jerardogonzalez007 true, though Theories confirm them, there is yet no schwarzschild metric physically possible at this subatomic scales

This episode more than any other has blown my mind.

A beautiful theory 🫶 presented by a very talented young man 🍀 Thank you for sharing your work with everyone ♾️

The chances of being inside a black hole is low, but never zero.

@pixelkat1819

2 жыл бұрын

Just about the same odds as being attacked by a cow.

@casenswartz7278

2 жыл бұрын

@@pixelkat1819 actually those odds are very high 😐

@jamesbeechmusic

2 жыл бұрын

@@pixelkat1819 my dad got charged at by a cow (not a bull) when he was hiking in France. The cows horn sliced into his leg and had to get a huge amount of stitches on his upper thigh.

@ablebaker8664

2 жыл бұрын

I'm pretty sure my first apartment qualified.

@ablebaker8664

2 жыл бұрын

@@sirsherlock3550 Not necessarily true. There are provably conditions that are unprovable yet true.

Every since I was a child, I've been fascinated with the idea that all things are within other things. Sparked entirely from a visual comparison based on an extreme zoom in of a human eye, and an extreme zoom out of galactic images; such as nebula clouds. While universes within atoms seems rather outlandish, I do like the idea still. But I am continually fascinated with the comparisons between a blackhole singularity and the singularity at the beginning of our universe. Perhaps each blackhole is actually a child birthed from our universe, just as we were born as one. Each one experiencing their own form of natural selection in ways we could only speculate upon. Well, I at least like the idea of it.

@jeffsimoneaux5968

2 жыл бұрын

Exactly

@jeffsimoneaux5968

2 жыл бұрын

Only the biggest most powerful black hole in a single universe inevitably wins as the smaller ones are also absorbed.

@fromashestoangels378

2 жыл бұрын

Ok.....that just mind f**ked me lmao. Gonna have me thinking of that all day now 😆😂😅

@91722854

2 жыл бұрын

are you talking about fractals in particular?

@vhawk1951kl

2 жыл бұрын

Do you not understand that the very term universes is an oxymoron?

one of the most satisfying “spacetime”s to end an episode, well done

Thank you for speaking so clearly. Rarely can I watch a yotube video at 2.5x speed, but with you, I can.

I often imagined that black holes ARE the "edge" of the universe. And the "space" outside the universe is a "place" of infinite mass and physics and the universe is just an empty bubble-ish shaped space with little chunks of mass that are floating around and sticking together and if enough come together they form enough mass to essentially poke a hole into the other "side". Creating a sort of door way or entrance back into the infinite space but the gravitational pull is so strong that it actually makes it harder for matter to truly fall into a black hole.

@zhangalex734

2 жыл бұрын

hmmm very interesting

@nassera

2 жыл бұрын

nice

@daniel.chicote

2 жыл бұрын

#metoo

@michaeljurney8354

2 жыл бұрын

I like you

@slurricrasher9923

2 жыл бұрын

Thank you, kind folks. 😁

I’ve been watching you for years now. Honest criticism, you’ve become WAYYY better at talking to the camera in the last few years… love your videos now! Good job dude!!

@7threign780

2 жыл бұрын

this is not criticism. wtf lmfao

Mind blowing theory, Excellent explainations. Fascinating video.

12:15 “what’s on the outside” The “multiverse” that everyone seems to think exists… Outside could be another version of us where outside of their universe is just another version of us again so on and so forth

Matt, you started me on this journey 4 years ago. I couldn't believe that pie chart showing that we understood less than 5% of the universe. This one is fantastic. Putting some science into my speculations about the role of black holes in the formation of the universe 👍

I’m just a regular guy but I’ve always had strange ideas since I was a child. And as am a grown man now it strikes me that a lot of what I think about the universe without having any real knowledge is shared by many scientists and other people. I guess that’s INSTINCT as we are part of this universe.

@douche8980

2 жыл бұрын

I truly do wonder if our universe is circular and spacetime simply wraps around to where you'd wind back up at these same spot traveling in any straight 1D direction OR..... Is the universe flat and has a folding edge or possibly carries on forever on a infinite plane... Guess the world will never know :/

@leonreynolds77

2 жыл бұрын

Same here bro. 🤜🤛

@loturzelrestaurant

2 жыл бұрын

Science-Watch-Suggesss - want some?

@hardopinions

2 жыл бұрын

Your ideas don't occur in a vacuum and it's not surprising that many people will be led by observation to similar conclusions. It's not "instinct", it's pattern recognition. Now being able to argue your ideas logically, that's the next step and that's how science works.

So, do I still have to go to work tomorrow?

@supergreen5855

20 күн бұрын

nope!

@Giantcrabz

17 күн бұрын

be like Peter from Office Space

I'm totally fine with this explanation. It gives me some sort of closure so I don't freak out every now and then :)

If this is true, that means black holes could contains universes like ours, which also could contain black holes which also could contain universes, etc. Perhaps we could be "stucked" between the infinite small and the infinite big, time flowing differently for everyone, like 1 sec for us is 10 000 years in a black holes.

@FlyingRep

2 жыл бұрын

I dont think so. Matter at an atomic level cannot be reduced below that size, so in my opinion at the center of every black hole is a mass infinitely dense rather than a space, because atoms are the bare minimum, at some point the "universe in a black hole's planets" would be smaller than an atom which isn't possible.

@1mol831

2 жыл бұрын

@@FlyingRep The idea could be that the laws of physics and constants are adjusted based on the black hole's formation, so the minimum size of the atom could be much smaller in the black hole.

@chevon1920

2 жыл бұрын

@@FlyingRep I mean, who knows what the laws of physics are in other universes. They could be completely different. But it’s a moot point really because I doubt we could ever know

@nin1ten1do

2 жыл бұрын

nope black hole is singularity object.. no time flow.. there time and matter become one.. a energy mix + information dataset..

@givetaa

2 жыл бұрын

So, size is indefinite?..

I actually had this very question running through my head for a few days. My problem is I'm in no way smart enough to get much further than that. Thank you for making this so well timed

@bluntedvegas7028

2 жыл бұрын

Leonard Susskind has free lectures about this very subject....free on YT..have fun!!

@loturzelrestaurant

2 жыл бұрын

@@bluntedvegas7028 I ask around cause why not: Scientific Watch-Suggests, wnat some of those?

@travisbeatty5775

2 жыл бұрын

Not smart enough or not enough time to learn the math needed? The fact that you spend time contemplating subjects like this suggests to me that it is the latter... ;)

I'm enjoying the little sentence at the end of the videos detailing Matt's adventures within spacetime and our universe, he's like a little space explorer coming back to Earth to teach us new things and drop existential crises on us and then skeddaddles off to go on another adventure again... I love it! It's very amusing to imagine XD

That sounds badass

That’s honestly very terrifying and beautiful at the same time. The amount of time we have been in a black hole could mean we live in a much bigger universe with possibly infinite time. I don’t know how people carrying on their lives with a puzzle like this.

@hereandnow3156

8 ай бұрын

It could even be like those Russian babushka dolls! Black holes inside of black holes inside of black holes!😂

@dieterrosswag933

8 ай бұрын

You know something else: we probably existed and will exist infinite times if times is infinite. Existing here for the first and last time, a incredible small fraction of infinite, is just not realistic

@kenshinsan12

8 ай бұрын

@@dieterrosswag933 If you define "us" as life then you are probably correct. If you define it as separate individuals with memories and identities, I doubt it. We are matter and have a finite time.

@dieterrosswag933

8 ай бұрын

@@kenshinsan12 yes. When we pass away any memory is gone... probably. But will be born again. Where, who, when...no one knows

@Alextheskater91

6 ай бұрын

@@dieterrosswag933if the universe is infinite, then why wouldn't consciousness be? You just relocate but retain your memory

You cannot escape a black hole, just like you cannot escape our sponsor: raid shadow legends.

This is exactly what I've been speculating about for the last couple of years!

Great video 👍

"Biocosm" has been on my reading list for a while. In the book, it supposedly proposes a "biological" evolutionary model of the cosmos where successful universes create more black holes, which are used to simulate universes with slightly different properties. I like the idea of advanced civilizations figuring out how to use black holes as giant universe simulators to do incredibly complex computations with, and some of those simulated universes go on to create more simulated universes, and maybe complex life gets more and more abundant with each generation.

@Skynet_the_AI

2 жыл бұрын

WoW! What a fascinating thought... what IF. Hmmm... peace!

@LMarti13

2 жыл бұрын

Sounds like the cosmological natural selection theory

@Napoleonic_S

2 жыл бұрын

I find it very disturbing with the idea that there are advanced beings that's okay with creating all these f'up realities... for no matter what reason...

@Skynet_the_AI

2 жыл бұрын

@@Napoleonic_S how do you know this to be true? Just asking...

@logicss2893

2 жыл бұрын

@@Napoleonic_Sif you think about it we can kill ants without thinking about it just how these beings if they're real create realities without a second thought

If there was a black hole of this size, I would wonder how big the actual universe is. I also wonder what could make a black hole of that size?

I think as we begin to understand dark energy and dark matter a little more, it might become possible or plausible to determine whether we do, or don't exist, within a supermassive black hole

You have an image where the singularity of the white hole and the singularity of the black hole are paired with the event horizons going in opposite directions in time. However, if you pair the event horizons with the white hole singularity at the beginning and the black hole at the end, you have an expansion then contraction of a spiral universe.

@odalyssanchez7

Жыл бұрын

That contraction eventually becing dense enough to cause a big band explosion and so the whole process begins again

@iseethebluescreen

Жыл бұрын

Ur refreshing lol exactly... microcosmic\macrocosmic inversion... tesseracts; fold.

@iseethebluescreen

Жыл бұрын

@@odalyssanchez7 its actually a constant... time makes you percieve that spatial dimension as linear.

@toughenupfluffy7294

Жыл бұрын

@@odalyssanchez7 You mean Artie Shaw and Glenn Miller will return? (Big Band explosion...)

I've been waiting for this video for so freakin long. It's exactly what I've thought since learning how black holes work, especially the space/time flip that is supposed to happen when you cross the event horizon. It makes perfect sense that the time of infinite density being the big bang. We were just assuming the direction of the flow of time was the same inside a black hole instead of it being mirrored. Guess the whole "white hole" thing is just what another black hole looks like after you get to the other side.

Huge thanks to Matt and the whole team behind PBS Space Time! This is one of my favorite channels❤️

This was the subject of my final paper in High School AP Physics I titled "The Cyclic Universe Theory.". I received an A. The idea of infinite density doesn't make sense and something else must happen when the density reaches the Planck Length, a reaction occurs and a brand new Universe is generated. This has been going on forever, the Universe has no beginning or end, it just goes through an infinite series of phase transitions. 🤷🙏

@AG-ig8uf

10 ай бұрын

"... when the density reaches the Planck Length" 🤦‍♂

@eddieparris2803

6 ай бұрын

Yeah, the volume-density reaches the size of Plancks length 10^-35m 🖕

@far2ez

3 ай бұрын

​@@eddieparris2803 The "volume-density"? Volume minus density? Volume multiplied by density? You cannot combine volume and density in such a way through any mathematical operation that would yield something even dimensionally-compatible with the Planck Length. Planck Length has a dimension of "m" and "volume" is m^3 while density ("p") is "g/m^3" - you cannot nondimensionalize any combination of "volume" and "density" in such a way to result in "m" (except for trivially: e.g. m * p/p).

Could a black hole form within a black hole? Great video, first time viewer of your channel. Will be subscribing:)

Question: We've discussed that matter or "information" does not change in any way once it crosses the event horizon of a black hole. In a sense, it is frozen in time never to be altered. If in fact we are in a black hole could the Microwave Background Radiation be this matter or "information" that is forever frozen on the surface of the black hole that contains the entirety of our universe, seeing as it never changes?

@matthiasreichshof9896

2 жыл бұрын

"In a sense, it is frozen in time never to be altered." Only for the beholder outside, not inside.

@kevinpaap2890

2 жыл бұрын

What Matthias said: the information cannot be altered from outside the event horizon once it crosses into the black hole. It could, however, change within by another force

@bobinthewest8559

2 жыл бұрын

Anyway... the universe is constantly changing

@ajcook7777

2 жыл бұрын

I thought a blackhole was when a star goes supernova and collapses on itself, implodes and then explodes? We are inside a star that went supernova? what? that doesn't make any sense

@mnomadvfx

2 жыл бұрын

@@ajcook7777 Generally speaking that describes a stellar origin black hole yes - but there is speculation that not all black holes are formed through this process. At the end of the day a black hole is merely a celestial object of such huge mass that its gravity allows nothing to escape - not even light/em waves once it reaches the event horizon. For all we know the net gravitational effect of large clusters of galaxies actually causes much the same effect as a black hole, and we simply cannot view it from within.

I can't be the only one who as a college physics student I thought that each singularity at the center of a black hole might start of a universe inside of it. It's such an obvious conclusion to come to. Very cool to see that idea getting some actual weight behind it in the scientific community. (dang, that was almost 20 years ago now.. I'm old af)

@hales6547

2 жыл бұрын

Same here by just doing some Google research on NASA websites etc To me it would make sense that the Big bang is what happens when a black hole is formed or entered and the Big crush would be when we meet the singularity

@stevenmoore3480

2 жыл бұрын

'old af' and not doing much 'professional' physics at a guess...

@stevenmoore3480

2 жыл бұрын

@@hales6547 that and a thousand other random stories that have no proof... but I suppose monkey's typing forever will eventually write Shakespeare's complete works. Maybe you are right and you will find out at the end of time, more likely you need to do something useful now.

@KhalilEstell

2 жыл бұрын

Same here.

@andrewbetances1203

2 жыл бұрын

It is definitely interesting, but what about matter and decay like he mentions? Are they just smaller universes or is string theory coming into play? If it wasn't for expansion and decay I would have thought that black holes will eventually all come together and become such a powerful entity so that it sucks everything back from the furthest reaches like in the cyclical universe shown in Futurama. I thought of that myself as well but didn't seem to work. The theories in this episode are amazing but still need explanation.

Mind blowing!

that concept is sick, i will stick to it

Could being inside a blackhole explain dark energy, as everything is being accelerated towards the singularity which because of the distortion of space-time inside a blackhole is actually located in all directions around you, so everything appears to be getting pulled away from you?

@dalton-at-work

2 жыл бұрын

yea i have heard this somewhere before too. great thought!

@roberttheiss6377

2 жыл бұрын

*mind blown*

@StevenSeagull123

2 жыл бұрын

Woah

@streuthmonkey1

2 жыл бұрын

There is no evidence for the existence of dark energy, the same can be said for black holes.

@Dragrath1

2 жыл бұрын

Dark energy almost certainly doesn't exist since it has been shown that cosmological principal does not apply within our observable universe since the cosmological principal where it is assumed the universe is at some scale homogenous enough for the Friedmann-Lemaitre-Robertson-Walker metric to be able to be applied to our observable universe depends on the assumption that the CMB dipole is purely kinematic in origin as any other dipole component being nonzero would eliminate the applicability of a scale of homogeneity where the FLRW metric could be applied within the observable universe. In the 1980's an experimental test was devised which could unambiguously test the pure kinematic dipole assumption though this test needed millions of cosmologically distant sources which could be used to construct a dipole in the sky that can be compared to the CMB dipole. If the dipoles match in magnitude and direction the CMB dipole is indeed kinematic however if they don't match in both magnitude and direction then the cosmological components to the CMB dipole are nonzero and thus sufficient to eliminate all models assuming the cosmological principal applying within the bounds of the observable universe. The results of Nathan J. Secrest et al 2021 ApJL 908 L51 using a final sample of 1.36 million quasars measured by catWISE reveal a dipole with more than twice the magnitude of the CMB which results in a 4.9 sigma discrepancy (only a 1 in 2 million chance of being a statistical fluke) from the CMB dipole so we can largely rule out the assumption and any model that depends on it if looking at the situation objectively. Given that anisotropic cosmologies automatically produce the observed acceleration with anisotropic and inhomogeneous variation as had been largely demonstrated by work which doesn't implicitly assume the cosmological principal Occam's razor suggests there is no dark energy.

Imagine our entire observable universe being just a spec within a superverse

You blew my mind

This was nerve-racking

One way to define a black hole is a region in which light can not pass to another defined region of space. It is cut off from that other region, as light can not pass between the two. Around our universe, in every direction, we observe a red shift that is proportional to distance of observed objects. Extrapolating, this means that at a great enough distance, light from those vastly distant objects will red shift to a frequency of zero and be undetectable to us by any means. So, this meets the criteria for us to exist inside a truly enormous, massive black hole. And we seem to be just fine trapped in here with all the observable universe to keep us company. But it may be an infinitesimal fraction of the universe outside its boundaries.

I loved watching PBS space related videos with my late grandpa. I first found out about black holes when I was six. I wasn't scared, just fascinated.

My Blackhole theory when I saw the title: The Universe is ever expanding, if the universe was a blackhole, then the black hole would be constantly absorbing matter, which causes the universe to expand.

This is fascinating! But if we are in a black hole where is loses particles, how could our universe be expanding? Soo many questions!

I love the explanation you gave in the beginning that space is flowing like a river. Thank you for mixing it up and sharing your interpretation of the science and not copy and pasting whats already been done. Keep it up.

Man! What an amazing time we live in! That we can explore the universe with such technology and ponder the deepest structure of the universe with such great minds is so exhilarating and exciting! Thank you professor for spending so much of your time bringing us hard won knowledge and go

@christopherhughes2211

2 жыл бұрын

And thank you for bringing your obvious love and dedication to knowledge to us for all these years! Thank you sir, thank you!

@honkhonk8009

Жыл бұрын

ion think this dude a professor bro. Hes just a grad student they prolly hired to fw this stuff

@deyasinharoy4987

Жыл бұрын

“Time”, yes. Amazing indeed.

@JoshDisher

10 ай бұрын

​@honkhonk8009 He most definitely is... "Matthew John O'Dowd is an Australian astrophysicist. He is an associate professor in the Physics and Astronomy Department at the Lehman College of the City University of New York and writer and host of PBS Space Time on KZread."

makes so much sense, a black hole is so strong it can absorb light and light cant escape; our universe is exanding so fast light will never reach the end. even if you would reach close to the border you cant reach it since i think space and time are going slower.

i love this and i feel high and im not even high

If the universe was within a black/white hole, then wouldn't that explain away dark energy and the expansion of the universe as just being the result of gravity at a very large scale?

@twstdreality

2 жыл бұрын

You can’t get inside a white hole. They push everything out and away

@jaylev85

2 жыл бұрын

My theory is that gravity is the inverse of whatever force is expanding space-time. Otherwise all matter would be pulled apart from the stretching of space-time

@shukrantpatil

2 жыл бұрын

@@twstdreality exactly why the universe is expanding at an accelerating rate .

@gonzofonzo5814

2 жыл бұрын

My teori is that there is no black matter and there is no black energy . The space is expanding because a singularity or a huge black hole , that strech the space

@emodude35

2 жыл бұрын

Close - Dark Energy becomes nothing more than the expansion of your containing black hole, which expands your surface area.

the idea of a nested universe makes so much more sense to me than the idea of a multiverse. there are so many parallels between earth scale and the cosmological scale, universes creating more universes just seems to fit the general parallel better. there is also the factor of our universe expanding inexplicably - what if that expansion is powered by the constant feed of matter and space time into a black hole? or what if the collapsing of the initial star speeds up over time, explaining the acceleration of universal expansion? idkkkk it's all theory and questions i have but it's so interesting to think about!

@DelFlo

2 жыл бұрын

It's fractal all the way down. And up. And sideways.

@itchykami

2 жыл бұрын

That means the CMB is in part hawking radiation.

@ghosthunter0404

2 жыл бұрын

I beleive multivariate might still be possible even on top of this theory. Nothing is set in stone on how things happen there is no destiny as we all have free will in our choices. In another version of reality there are infinite ways things could've happened maybe an alternate you did something slightly different today. There isn't a way to prove this theory unless we can control time itself maybe even invent a device to jump to different universe inside different black holes.

@joshgardner112

2 жыл бұрын

I don’t see any reason why a nesting universe and a multiverse cannot coexist simultaneously…

@joshgardner112

2 жыл бұрын

@@ghosthunter0404 I’m not really sure that multiple diffferent universes of our realities is how the multiverse really works….I kinda think it’s being used as a misnomer for the infinite multidimensional existence of the universe itself, as well as ourselves

This theory is so interesting, and actually, in a strange way, a more comforting thought than us being in a mysterious ever expanding "space". In fact, seems more logical than just a random "big bang" started everything from nothing. Now imagine being able to travel into blackholes, it'd mean universe hoping.

Fascinating.

Hi Matt, I absolutely love the show despite not having any formal education in physics beyond the age of 16. Your explanations of complex phenomena are incredible and have rekindled my interest in the subject! I've been mulling over a question to which I haven't found an answer on the internet. I wondered if you could provide some insight. If two black holes were orbiting each other very closely and their event horizons overlapped, what would happen to a particle that entered into the overlapping section of both event horizons? All geodesics lead to the singularity beyond an event horizon, but they can't lead to two singularities. My theory (based on no maths and purely on conjecture) is that the possible geodesics of the particle all remain within the overlapping "Venn diagram-esque" section of the event horizons as the black holes' orbits decay. As the black holes get closer and the overlap in their event horizons gets bigger, the particle's possible geodesics include the new, larger area of spacetime. Then, either, the particle meets both singularities simultaneously at the point at which they merge, or when the black holes eventually merge, all of the particle's possible paths point to the "new" combined singularity. I picture it as though the particle is dragged around inside the overlapping sections of the event horizon. I would really appreciate it if you could provide clarity on this! Alternatively, please let me know if this has been answered previously, or whether this question is completely nonsensical. Thanks, Hugo

@marsovac

2 жыл бұрын

When two perfectly round soap bubbles are squished together you don't get overlaps of their surface, but you get two joined bubbles where the part that should be overlapping is now the edge of both bubbles and they are no longer round in that area - straight line. They divide the air pressure as efficiently as possible to minimize surface tension.

@shadesmarerik4112

2 жыл бұрын

there is no overlap. Black holes bend space-time to infinity. The way the light takes into a black hole or out of a black hole is infinite, and with it the distance we measure. One black hole literally needs to travel infinitely long (both in distance and in time) to reach the event horizon of another black hole. Which is not possible, since u assume a finite time the universe existed. There is quite literally infinite space between u and every event horizon.

@JNArnold

2 жыл бұрын

Also got this from that stack exchange answers, a youtube channel with simulations of merging black holes: kzread.info

@deepak_nigwal

2 жыл бұрын

just buy some good reference books about black hole harmonics, their thermodynamics, wave dynamics, or something which gives deeper understanding of their behaviour mathematically. Find and read good research articles which are published every month in reputed journals. Finally, talk to some good astrophysicists and professors who give regular lectures about this topic. Only then you will understand the VAST nature of the black holes. Its ok if you dont have any formal education in this, but you can start learning right now instead of wondering for answers on internet.

@MrMattnis1

2 жыл бұрын

Don't worry, you can make up any ridiculous thought you want apparently.

Back in the 80's when I took ASTR 101, the professor had us work on the density of black holes. What would be the radius and density of a black hole if the mass of it were 1 kg, like what if you made a black hole by compressing something you could hold in your hand. Very tiny, very dense. What if it were the Earth? Still small, like a baseball if I recall, but less dense. The sun, larger, less dense. Keep adding mass, the radius is larger and the density is less. He then asked us to consider the theoretical density of the known universe. So it's always been in my head, the mass of the the universe, given that it would not need to be dense, could be a gigantic black hole, we live in, and have no idea what's outside. Update: What I mean by 'black hole' is what's inside the event horizon, not the mass singularity itself.

@davidsheckler8417

2 жыл бұрын

An you wasted all of that money studying unproven nonsense...get a refund

@davidsheckler8417

2 жыл бұрын

You basically studied CGI cartoons

@ShapeDoppelganger

2 жыл бұрын

Also, the density of all Black holes are the same, infinite. All that changes is the radius and the mass of the Black hole, but not the density.

@davidsheckler8417

2 жыл бұрын

@@ShapeDoppelganger Also the density of the Sheeple believing this nonsense is astounding

@ShapeDoppelganger

2 жыл бұрын

@@davidsheckler8417 Believing in what, that black holes exists? There's no other affirmation on this thread.

Mind blowing theory, Excellent explainations. Fascinating video.. Mind blowing theory, Excellent explainations. Fascinating video..

The problem is that yes it would explain the big bang, and also explain the multiverse, every universe having blackholes which are their own universes, but the problem is there still needs to be an original universe, with the first star, first black hole, which requires matter and energy, and since its the first universe theres no matter from outside universes to fuel it, so yes this is more probable than the big bang and the universe creating itself, it still requires an original creator.

whilst i suspect that there are some definitive physics saying that it isnt the case, ive always thought that blackholes all seed either into separate singularities (one for each universe), or all seed into one singularity which, when all the matter in a certain area/universe is captured, becomes so intensely compressed that it erupts into a big bang and then expansion- rinse and repeat.

@simonlockley-evans9349

2 жыл бұрын

Agreed this has been my assumption too. I believe black holes in our universe to be a big bang in another universe thus creating the multiverse.

@caleb2507

2 жыл бұрын

Thats a pretty interesting thought fo sure, I would not discount it. Wish you could ask a Physicist this question so we could all hear an answer lol

@andrewmadilecy5704

2 жыл бұрын

The idea that all black holes lead to a single singularity is very wrong. The base requirements for a singularity is a point in space, and, as we all know, you cannot have two points in space equal each other. Else causality would break. But each black hole having it's own separate big bang equivalent singularity is unprovable. So you can believe it if you want, no one can't prove you're wrong.

@cheese4840

Жыл бұрын

@@simonlockley-evans9349 Yeah but if you think about it that way the likely chance of our universe being the "original" universe quickly becomes very low.

@simonlockley-evans9349

Жыл бұрын

@@cheese4840 Agreed 100% so low in fact as to be beyond the normal range of human understanding. We are talking extremely large numbers that the human mind finds difficult to comprehend.

used to think this when i was like 10, never knew this was a real topic of consideration

just imagining how dense and compacted we are with our molecules. leads me to believe we are already in some sort of black hole

Great video. I don't understand, but I like the subject material anyway. ✌🏾

When I was quite young, I proposed The Big Cheese model of the Universe: that the Universe at large was eternal, but inside every Black Hole, the Singularity appeared as if it were the Big Bang of a universe contained within the event horizon of that singularity.

@renderproductions1032

2 жыл бұрын

Sometimes it’s the young minds who have the best ideas.

@antondovydaitis2261

2 жыл бұрын

I had a very primitive model of special relativity that made sense to me in the third grade. I tied time dilation to the expansion of the universe, arguing that because the radius of the universe was larger in the future, something like centripetal force pushed faster objects slightly into the future. That doesn't work, as it assumes an objective frame of reference, but it was simple enough that I could explain it to someone.

@RenneDanjoule

2 жыл бұрын

It's a shame black holes are just a theory. Call them Plasmoids.

@EffWriteOff.

2 жыл бұрын

I thought this many years ago as well, then later on the white hole theory was published, I think if a black hole has nothing else to absorb/eat eg outside of the event horizon could it possibly collapse on itself to the the singularity that then creates a Big Bang.

@antondovydaitis2261

2 жыл бұрын

@@RenneDanjoule What are you talking about? Black Holes, at least until you get much beyond the event horizon, behave exactly as General Relativity predicts, and General Relativity has never failed a single prediction. We have observed objects that must be denser than any neutron star, and we have observed matter interacting with accretion disks. There is the recent famous "photograph" of a Black Hole, or more technically, the neighborhood around a Black Hole. We observe gravitational lensing. Not a single astronomical observation contradicts the existence and behavior of black holes. Do you even know what a plasmoid is, or does using the word make you feel smart?

Who else is being left wanting this masterpiece to become an actual series on traditional TV through our local PBS affiliates?

@loturzelrestaurant

2 жыл бұрын

I ask around cause why not: Scientific Watch-Suggests, wnat some of those?

@ciarrai3575

2 жыл бұрын

Would be great for those who watch them in school. Personally, I am comfortable getting my head around the snippets on this channel for now.

@amlord3826

2 жыл бұрын

TV is so 20th century... Everyone can see it here so why also on "tv"?

@ThePowerLover

2 жыл бұрын

@@amlord3826 This "place" has also TV, YT is a form of TV.

If universes were simply black holes inside other universes, what would happen when black holes merge?

My brain has melted

What I learned: if we're in the blackhole, what's outside?? Other living creatures wondering if they're inside a blackhole? Blackhole-ception

@ghosthunter0404

2 жыл бұрын

Yes in fact everything outside our black hole would be massive in comparison to us because when you enter a black hole it breaks you down to smaller bits then atoms itself. Meaning a dust mite on our planet could be in fact as large as a lightyear in length in that universe while we would be billions of light-years in length if we somehow ended up our size in that universe.

Could the direction of time that we experience as "forward" actually be backward to someone observing from outside our universe/black hole? In that case, all of the matter that to us looks like is expanding away from us would actually be falling into our black hole if we were to watch from outside it, I'm probably wrong but to me this would seem to help explain why the big bang was a moment of extremely unlikely low entropy, since in that view the collapsing of the universe would be inevitable, and that period of low entropy is what caused our perception of times direction to flip (maybe?), and the collapsing of the universe into the big bang may be what it looks like from the inside of a black hole as it radiates and shrinks due to hawking radiation

@l0d1z01

2 жыл бұрын

Maybe that's why I have this feeling that I've already died and that I am just re-experiencing my life as it once was.

@LochyP

2 жыл бұрын

I had a similar thought. A black hole is a singularity in space - the big bang is a singularity in time. Reminds me of penrose diagrams.

@connornolan4432

2 жыл бұрын

@@LochyP same, I kept thinking throughout the video about how space and time "swap places" inside a black hole

@PetraKann

2 жыл бұрын

Yes

@vorname1485

2 жыл бұрын

Entropy is not symetric.

I thought we were all inside the eye of a giant called Macumber. I'm afraid the science in this video is way over my head but it was an enjoyable presentation nonetheless. Thank you.

The whitehole is the Big Bang. A location virtually impossible to reach. It's also the event horizon as viewed from the inside.

This is heavy stuff. -- I think all of this is worth taking "seriously" in the sense that many discoveries began with a guess or "crazy" idea that later turned out to be true. We make advancements and discoveries by asking questions, some times seemingly absurd ones. It's how we learn.

@loturzelrestaurant

2 жыл бұрын

May i ask you a Thing?

@mikekull7183

2 жыл бұрын

None of these scientific facts are actually facts. You do know that right. It’s like saying you know what gravity is…

@loturzelrestaurant

2 жыл бұрын

@@mikekull7183 I mean, yes and no? No one claimed he knows everything about Gravity, so therefore no one has been objectively wrong. And yeah, we kinda do know an awful lot about Gravity already; it wasnt discovered last Monday.

@mikekull7183

2 жыл бұрын

@@loturzelrestaurant I was speaking in general, not so much about him. We don’t really ‘’know” what gravity is though, nobody does or is

Hawking radiation means things going out of the event horizon which will never return. Which is what is happening to the cosmological horizon too because of expansion of the universe. Could the black hole shrinking relative to the universe be the same as universe expanding relative to the singularity?

@khatharrmalkavian3306

2 жыл бұрын

Hawking radiation is not leaving the interior of the event horizon though. It's the result of virtual particle pairs splitting at the horizon such that one particle is outside and can escape the gravity but the other is inside and trapped. The radiation is the escaping particles, de-virtualized by their inability to rejoin their partner and annihilate.

@Vastin

2 жыл бұрын

Bear in mind that if the universe is inside a black hole, that black hole almost certainly doesn't have a real singularity - it'll likely be something more exotic, such as a 2d sphere, or a quantum fuzzball. A real singularity can't represent a universe - it doesn't have the complexity necessary to represent much of anything at all. Wherever math indicates a singularity, it's a very strong bet that something rather more complex and interesting is going on there. Similar to the way that the speed of light never actually *stops* you from going faster, it just approaches an infinite asymptote and time starts to warp instead. Similarly you should never be able 'reach' a singularity, even if you can always get closer to it, something akin to the speed of light should be kicking in as you approach infinite density which prevents that outcome.

@mb1287t

2 жыл бұрын

Thats the jist of it. If compression is put on matter to shrink inward on itself in all directions then it would simply appear that the universe is expanding in every direction. Been waiting on this one for years. Ask a spaceman touched on it about 5 years ago too. His answer was essentially so what? Its possible and how does it change anything? I appreciate matt and his team's response much better.

@KRYMauL

2 жыл бұрын

@@Vastin A mathematical singularity is just a 1d dot, and the real world is never that simple.

@101Mant

2 жыл бұрын

@@khatharrmalkavian3306 I heard that explanation for Hawking radiation too, but have also heard since then several times it is incorrect. There is a good Science Asylum video on it.

So... I was under the impression that if there is enough mass within the Swarzschild Radius, boom, black hole. Apparently, physicists equivocate on this when it comes to talking about the universe, but I'm not sure why. The observable universe HAS enough mass to be a black hole within the radius we measure. That should be end-of-story as far as my understanding goes. Why is it not? Please explain.

I love watching these types of videos acting like i know wtf they're talking about