Mapping the Multiverse

[@TheTexas1994]

I'm disappointed that the ring singularity wasn't called a "ringularity"

[@auto514]

That’s fairly common, he just didn’t use that in this video.

[@adolfodef]

It would be a mistake, because it is NOT a ring either. It is "another donut" (like the ergosphere), defined as ~whatever~ new strange physics that -DOES NOT COMPUTE- [different than what governs our universe].

[@spammerspammer90]

From wikipedia: "A ring singularity or ringularity is the gravitational singularity of a rotating black hole, or a Kerr black hole, that is shaped like a ring."

[@adolfodef]

@@spammerspammer90 This is like trying to argument that a black hole is a "hole" in the "fabric" of spacetime. -> There is no discontinuity at all! Spacetime does not "rip" or "break" or "shatter" [the Penrose Diagrams depend on the conceptual entelequia that (time+space)=energy=information].

[@iainballas]

@@spammerspammer90 How DARE you cite Wikipedia! Don't you know it can be edited by anyone? It can't possibly be as reliable as this awesome sketchy site from 1492.

[@AndrewJensenDV2015]

I feel like every time we see a Penrose diagram in Spacetime, it is slightly larger than the previous one.

[@IssasHusband]

A few episodes doen the line and we will meet the boss of penrose diagrams, bigger, and more incomprehensible

[@KungKras]

Soon we'll be able to play Penrose chess. And then the universe shall have fulfilled its purpuse.

[@joluoto]

It is known that Penrose diagrams grow over time.

[@ObjectsInMotion]

Jonathan Luoto Not only that, but the rate of growth of Penrose diagrams is accelerating! Leading to physicists hypothesizing the existence of “Dark Cartography”

[@JamesLaenNeal]

That's just a result of living in an expanding universe.

[@leonardogoulart3245]

"Multiverse cartography..." This is gonna be one of those hard mode episodes, isn't it?

[@Karasamune]

@Kleos whaT

[@MarloTheBlueberry]

mHm , mHM its 11:08 PM and im brain is sleeping am a Rile. Differwnt. Subatomic brain is working, not the original. Oh I meant the subconcious is conciousing me instead of my regular concsious. it is asleep

[@GiomDe]

"this may sound fun, but there's the inconvinient fact of your utter obliteration" got a real chuckle outta me

[@thstroyur]

Because that's not an "inconvenient fact", it's a flesh wound

[@snk-js]

I wonder if we could control quantum entanglement with particles active to observers when sending them to the black hole; all of his manners would be replicated in their entangled par to be viewed live by humans.

[@thisflyingpotato4227]

6:51 "Our balls, and the geodesics they follow, rebound and travel back out." -Matt O'Dowd, 2020

[@elck3]

ThisFlyingPotato So say we all.

[@Zheeraffa1]

Didn't he also say something about repulsiveness of naked rings and plunging into them?

[@elck3]

SupraGuy2jzgte yoo new pick up line! For my nonexistent game.

[@thisflyingpotato4227]

@SupraGuy2jzgte To sum up the video, once you go black you never go back

[@paviad]

I bet it took several takes before he got through that part without him or anyone else in the room laughing

[@enaidealukal4105]

This is an especially great video, even by PBS-ST standards.. I've been waiting for this one since pt 1, and it didn't disappoint. Love the stuff on the inner structure of the Kerr black hole especially, there's next to no information about this online that doesn't require a graduate-level (or higher) understanding of math/physics to even be able to read.

[@tarekchahattou]

Right? I'm glad I understood most of it after watching it like 20 times and doing research, finally. I hope we can one day try to explore black holes more and more

[@mustafayilmaz2259]

Sayın enai hirt Sizin anlattıklarıniz eski zaman masallarinin acı ortaylarini teğet gecen yamuk cozgilerdir.Yamuk çizgi günümüzde geçersizdir Lütfen ayak degistirin

[@enaidealukal4105]

@Kleos um... what?

[@nenmaster5218]

@@enaidealukal4105 I feel like many Atheists and Science-Fans dont realize how much those 2 Overlap. And i even add a Third: Conspiracy-Debunk-Channel. Kent Hovind is a good Way to measure this constant Overlap in Content: Hes covered by all 3 Kinds of Channels, just like Flat-Earth and Evolution-Denial. I think the Fans should be more aware that theres more Fun for them to have.

[@edykauan]

I just found out Matt O’Dowd is almost 50 years old. Which of the time machine options have you used to look 20 forever?

[@rtbeerzi]

Bro what?!

[@rtbeerzi]

how is he so smart

[@adamgage851]

I would've guessed late 30's

[@enaidealukal4105]

Seriously? That's insane.

[@sumans7620]

Wow

[@DFloyd84]

"Repulsive naked singularity"? Way to give the singularity body image issues, Matt.

[@falxonPSN]

Singularity shaming is a thing now??

[@kienhsi9522]

I prefer the term 'time reversed' naked singularity, attractive in its own, beautiful, way

[@obsidianjane2267]

Does that depend on if we give them masculine or feminine pronouns?

[@jinchey]

No wonder it's always hiding behind that event horizon.

[@AlephOneHalf]

@@obsidianjane2267 Singularity is a female noun in French and Spanish

[@derptomistic]

*Before watching* "Yeah, I think I'll understand a little of this..." *After watching* "I can feel the warp overtaking me... IT IS A GOOD PAIN!"

[@no.one.2]

Heretic.

[@sid6645]

HERESY

[@haodev]

Hello fellow DoW enjoyoor.

[@ryanturner6920]

Can I get this Penrose diagram embossed on a towel? I'd like to pack as light as possible for the trip...

[@luisaleman9512]

That is a great idea given that a towel it's the most important item for a galactic hitchhiker

[@TJfromEarth]

@@luisaleman9512 yes thats the reference they were making

[@robharwood3538]

@@luisaleman9512 Haha, you were thinking along the same lines as me, see previous comment. 😄

[@ariochiv]

You know you're in trouble when an astrophysicist calls you a nerd.

[@somedude4805]

A compliment, to be sure.

[@animistchannel2983]

...but he also knew the Order of Hermes from "Mage: The Ascension" so you can think of it as an inclusive greeting. Anyway, Homer Simpson quotes tend to get the last word, like in SG1 on the last fishing trip: "Close enough..."

[@zes3813]

wrg, not nerx no matter what, learning some science s k

[@DiracComb.7585]

Some Dude but a welcome one

[@somedude4805]

@@DiracComb.7585 Of course.

[@MargoMB19]

I've been staying home, dealing with depression, everything is just kinda 'meh' in my life... And then this. No idea why, but I got so excited while watching this video! I muttered to myself multiple times in an effort to actually understand things, 'rewound' (is that word even used anymore?) probably a half-dozen times to make sure I really took in what was being said... This made me so happy. I'll never truly *understand* most of these videos, but it's so so fun to watch and think about anyways.

[@dannyhussain5489]

That's it, that's the exact same feeling I get. I watch them with an awe struck face trying to understand how there are some humans understanding things on a level I'll never be able to

[@portiktamas810]

But it's hypothetical unless we know for sure what singularity really is 😒

[@MrEurolaf]

I had the same reaction. This is all theoretical but even the fact this is a possible is amazing. It really speaks to the fabric of space/time and how our universe functions. So much more research needs to be done but I doubt this gets the attention it deserves.

[@morkovija]

Break the cycle, raise above, focus on science, sis

[@denimchicken6549]

"Be Kind, Rewind!" You're not alone, Margo. Stay safe, and stay sane, and don't feel like you can't reach out to someone, even if that one is a many and those many are internet strangers. Isn't this stuff just fascinating? :D

[@Gam3B0y23r0]

: Reads the headline: - yeah... I'll definitely understand this...

[@E_PHI_r]

Its easy bro

[@Gam3B0y23r0]

@@E_PHI_r Don't get me wrong, I don't disagree, I think everything can be learned by the average human. I learned my profession by myself, with the internet... and I understand this on a basic level, pretty well, but I don't understand how it should be understood, (on a mathematical level, with equations, etc...) it is not my profession.

[@manu85345]

I definitely don’t

[@KingNemba]

Brilliant people. There's understanding then there's UNDERSTANDING. Its insane how deep the rabbit hole can go for what we believed to be simple.subjects from.a. vague point of view. Look at the proof for 1+1. Like wtf? You can proof what we thought we could take for granted.

[@glowingdawn9179]

Watches the video : yeah... I definitely understand it now...

[@spoony8232]

When travelling the Multiverse, always remember : Don't panic and always carry a towel.

[@john-or9cf]

Spoony And don’t smash tiny rodents

[@JusNoBS420]

Bring TP cause you never know if thats a thing in the new universe

[@spoony8232]

@@JusNoBS420 Better panic buy now

[@horizon241]

Just make sure the towel has the maximally extended Kerr map of the Carter-Penrose diagram of space time printed on it.

[@birdseyeview-5280]

Always a towel!

[@kevindave277]

"Our balls, and the geodesics they follow, rebound and travel back out." Haha, you tease!

[@dauntless64]

*My Brain at the start of the video:* “Multiverse _[Captivating Scientific Gibberish]_ . In English this is *[Captivating Scientific Gibberish with a hint of English]!* ”

[@AaronQian]

@DejaVoodooDoll Or, just think anti-particles are regular particles going backwards in time, or regular particles just anti-particles going backwards in time. ( ͡° ͜ʖ ͡°)

[@stevewithaq]

T-shirt idea (from 8:05) - "Naked Singularities are Repulsive"

[@elck3]

Steve WithAQ the t-shirt would thus also be cut open in the back

[@exoplanets]

Oh

[@blackshard641]

What, would you prefer one with hair? ;)

[@lisasteel6817]

I would buy that

[@dogsdinner99]

I'd buy that for a dollar :)

[@mlbatman85]

Am I the only one that laughed uncontrollably at "this may all sound fun but unfortunately theres the inconvenient affect of your utter obliteration" @11:10

[@elguada123]

Yes

[@austins.2495]

It made me think of death. Maybe we have to die (go through the black hole and get obliterated) to get to our next life (another universe). I'm not religious or anything, just a thought.

[@thepricillove5244]

Low key British wit gotta love it. I usually sort of do a half smile of amusement and slap around that lady from > Keeping Up Appearances

[@pineapplepenumbra]

@@thepricillove5244 You slap Hyacinth Bucket on a regular basis?

[@arasonyth3243]

@@pineapplepenumbra "it's pronounced Bouquet"

[@JetskiDex]

Yes lads, good to see everyone checking in nice and early.

[@aimfail]

You know the world is global, right?

[@NewMessage]

Good luck with that map, Google.

[@Adolf1Extra]

Meanwhile my GPS: "Recalculating..."

[@auregamer5]

You cant go back to previous universes, but at least you can see entirety of them on google street view.

[@NaptownsClassic]

@@auregamer5 hey, they found the Millennium Falcon on maps, and that was from a long, long time ago in a galaxy far away

[@skilz8098]

@@NaptownsClassic No, that would be in the past universe, you're now in a new universe...

[@larsalfredhenrikstahlin8012]

there you are

[@thomasevans5467]

This is absolutely wildly interesting and elegant, I can conceptually comprehend maybe 19% of the whole concept at this time in this version of this existence in this universe.

[@Madara8989]

localized entirely within your kitchen?!

[@MarloTheBlueberry]

Yep, localized entirely in my own kitchen, @Mandara8989

[@AndrewDotsonvideos]

*Takes plunge into black hole* God I wish that were me.

[@schokoladenjunge1]

Is grad school taking your will to live, Andrew

[@1224chrisng]

when is physics memes coming back

[@theg.c.142]

@@schokoladenjunge1 any college does. Brainwashes you into a raging liberal if you're not careful......🤦‍♂️

[@onenickelmiracle]

Cannonball!

[@MephLeo]

@@theg.c.142 That's the most unlikely place to find echo to anti-intellectual rants, I'm afraid. But do go on, tell us about how liberalism has ruined everything by giving you the right to freely rant against it... * yawns *

[@GiancarloPaniccia]

Matt: You're inside the inner erogsphere and could die. Me: Haha spinny lightspeed ship go brrrrrrrr...

[@lncerante]

Matt: you can't really travel back in time! Me: haha time go ɹɹɹɹɹɹɹɹɹq

[@jamesdriscoll9405]

Ride the ergosphere - good for a t-shirt!

[@TheOnyxPath]

Well, this was an unexpected place to come across a Mage: The Ascension reference. Thanks, Matt! We actually have a Kickstarter ending in about a week for a deluxe edition of our upcoming "Technocracy Reloaded," so please do check that out if it's the sort of thing that interests you.

[@dirkbastardrelief]

I’m waiting for a ref to “Heirophant Apotheosis: The Raising”

[@salmamraih2968]

Haven’t watched it yet but I don’t get it.

[@LaminateMonkey]

It's okay, you will understand even less after watching it.

[@sleazymeezy]

@@LaminateMonkey remember, licking doorknobs is illegal on other planets

[@calculandopoop5825]

Watch the other videos of the channel and you will start to understand somethings

[@xenos_n.]

@@calculandopoop5825 bold of you to assume

[@Angela.Perkins]

@@sleazymeezy And just gross on this planet.

[@DiracComb.7585]

Don’t you mean “the multiverse of madness”? Also, I’m guessing the hitchhiker’s guide to the galaxy isn’t gonna help me with these new universes?

[@AboveBeyondVapor]

No...this is pure physics

[@DiracComb.7585]

2 Sides 2 Every Truth yeah, this is mostly mathematical extrapolation involving manifolds and differential geometry. In a mathematical sense, it’s possible, and it certainly might exist, gut no experiment has yet proven that this is precisely how it works.

[@procrastinator99]

Think the new Doctor Strange is caught in a permanent limbo, or will we ever see it?

[@Rassilon42Omega]

The Guide Mk.2 would have been able to help you, but it seems it was stolen by a disgruntled restaurant columnist.

[@josephsalomone]

I mean, this is a testable theory. We just need to get to our closest supermassive blackhole and take the plunge. And thanks to quantum immortality, you will survive the encounter.

[@jamieg2427]

This is among the trippiest videos I've ever seen . . .

[@johngrey5806]

Nobody warned me that we need drugs to watch this episode.

[@soldatwalmart9515]

John Grey this one is the drug lol

[@soldatwalmart9515]

Anirban Chakrabarti bruh you’re making me jealous stoppp

[@DissociatedWomenIncorporated]

@Anirban Chakrabarti I'm _also_ thoroughly jealous. You know the rules, you need to bring enough to _share with the entire class._

[@mrmccranky]

Dude. That’s every episode.

[@DissociatedWomenIncorporated]

@@mrmccranky _Dude._ You have a great point. Duuuuuuuuuude. ...I'm intoxicated and making fun of the word rather than you, and I even like the word, just adding that disclaimer since I know many people are 🦆ing awful, especially on KZbin comments. It's almost like they've never watched and accepted the words of our Lords and Saviours, the Wyld Stallyns. *Be excellent to each other!*

[@Alorand]

Wait, where is the bookshelf in this diagram? I need to float to behind the bookshelf...

[@feynstein1004]

MURPH!

[@thatgirlinautumn5995]

YES also how could anyone forget that LOVE is the ONLY THING that transcends time and space, we can do it guys. All we need is love

[@feynstein1004]

@@thatgirlinautumn5995 Yeah no 😂

[@Yulad_A]

Is this video saying that Cooper didn't come back to his own universe after that event in the black hole?

[@doorstopper674]

@@thatgirlinautumn5995 looks like aromantic people are gonna have to stay on earth

[@jrbling25]

Question: So now that you've got this figured out for us, how about showing us what happens to matter and space time within these boundaries, but during a black-hole merger? Please and thank you :)

[@Vastin]

I'm going to go out on a limb and suggest that you probably don't want to be in there when that happens. Or would that be *where* that happens? We are flipping time/space coordinates after all...

[@technomage6736]

@Kleos Huh? A "ruling bloodline" with the implication that he has some "insider" knowledge? Perhaps a fantasizing philosopher with a big ego. The question "Are you really living on the planet you think you are?", while philosophical at heart, is more a question of semantics, because whether we live on a "planet" at all, and what particular planet it is called, is arbitrary semantics we've created to label something. If the question revolves around whether we've somehow been fooled or misunderstand our situation or are in the matrix, this is a very old conversation that goes back long before Rene DeCartes' famous line "I think, therefore I am". In other words: How do we really "know" anything at all aside from being a collection of thoughts? Fun topic, but nothing new or groundbreaking in philosophy.

[@technomage6736]

@Kleos I will read further out of curiosity, but with all due respect, the Illuminati and anything related are more boogeymen than reality. To the rare "spiritually" enlightened person, and those who "like water" go with the natural flow and change of the world, any group/organization that might exist with such power will hold no sway over such a person. To be fair, this is a rare minority, but any organization with power only achieves it in the minds of people. Without people thinking, believing, and following that which the Illuminati (or whoever) would want, they are powerless. I would like to read this conversation you spoke of so I can get my thoughts on it.

[@Stefbb]

It's really strange watching videos from a channel for years and barely understanding a thing. But I have to keep watching, it's so interesting!

[@tinycnyc]

It just feels like you're explaining how the universe is gonna start and end over and over again.

[@noxaeventide8845]

Kinda looks like a torus in my mind. Where the extended penrose diagram could be seen as moving along the toroidal geometry. So it could just aswell be circular instead of infinite.

[@Bebolife12345]

NoxA Eventide Wouldn’t it being circular implicate that it is infinite?

[@christiancampbell466]

Raezores Yeah, he can get a bit repetitive… =‑p

[@nickestrand]

Even if you reverse time it woulden come out as the same entrophy wount be restored

[@nickestrand]

kzbin.info/www/bejne/ioinfoCXgZekmZo

[@manwithnoname5510]

“Let’s push a little harder and try to get through the ring”

[@anarchyantz1564]

Just remember not to pull out too early or it could get messy.

[@TheStarBlack]

Black holes do have an irresistible attraction.

[@kalakritistudios]

@@TheStarBlack Repulsive when naked

[@IPwn3dJo]

When a topic on this show has a black hole and Matt talks about space and time switching. The end should be time-space instead of space-time

[@eduardoGentile720]

Ahhahahahahahhaha exactly

[@juzoli]

Just to clarify, this concept of “multiverse” has NOTHING to do with the multiverse predicted by quantum physics, right? If there are two universes, one with the alive, and the other with the dead cat, I cannot use a black hole to travel from one from the other, because that is an entirely different concept, only the naming is similar.

[@obsidianjane2267]

Yes. "Many worlds" is the rationalization to explain the paradox of a literalist Copenhagen interpretation of superposition. Where as the relativistic multiverse is.... bending math to prove that hypothetical "other universes" exist. Both are effectively just mental exercises that don't exist.

[@juzoli]

Goaltender Interference I don’t know, ask Matthew McConaughey. He saved the whole world by doing that.

[@MadGamer_666]

@Goaltender Interference awww why not ?

[@magnuspeacock5857]

@Goaltender Interference i would

[@abydosianchulac2]

On the map, the multiverse you're referring to I suspect is represented by the "parallel universes", while the multiverse mathematically accessible is represented by "new universes".

[@9Rezerk]

I have watched a lot of your videos. I mean a lot. This one right here is the best one for a lot of good reasons. I don't know why I missed it. Maybe I just watched it again? IDK, but great topic, really well written and exposed. And those very last seconds were amazing. I'm a nerd too, and I'm happy to know there's plenty of others around. Thanks!

[@arirahikkala]

9:55 The extra "l" stands for extra parallel.

[@devrim-oguz]

it took me a few seconds to notice 😂

[@tdogg1515]

Last time I was this early, all fundamental forces were unified

[@samsungtelevision695]

Theo Dixon I sat here trying to think of something clever along these lines to no avail. Nailed it man!

[@TheDavidlloydjones]

They still are. Problem is, we evolved this corpus callosum...

[@samsungtelevision695]

David Lloyd-Jones so you’re asserting that in fact spontaneous symmetry breaking didn’t happen when the cosmos cooled shortly after the big bang but rather that it happened when human brains evolved a few millions of years ago? Is this more of a symbolic metaphorical statement? I love DMT as much as the next guy but I think filling in a few more blanks for us readers would help get the point across better.

[@devrim-oguz]

@@samsungtelevision695 I think he is referencing to our time perception, but I don't know what it has to do anything with corpus callosum.

[@acey457]

@@samsungtelevision695 you don't need to be on psychedelics to acknowledge the anthropological has as much significance as the cosmological. after all, we are the locus of understanding

[@tomwalker6624]

I BLOODY LOVE SPACETIME!!! You guys are brill!

[@Natibe_]

>”or maybe hufflepuff” If this guy isn’t ravenclaw, ravenclaws don’t exist.

[@tracyh5751]

I don't know, he does seem to be a great finder of spacetime content.

[@marksmadhousemetaphysicalm2938]

Wizard smarts seems different from Muggle smarts...consider what Hermione says..."Books, cleverness..." (Sic) She's in Gryffindor...Luna Lovegood is in Ravenclaw...🤔 Hermione is good at logical thinking and solving puzzles...that's muggle smart...Luna is Wizard smart...seems more a type of empathic intelligence...with an understanding of the weird rules of magic...anyway...anyone who watches this channel regularly is a nerd to begin with...🤔😁

[@armack5]

Ravenclaw 110%

[@whoeverofhowevermany]

Well, um... Ravenclaws don't exist.

[@NicoAssaf]

"Our balls, and the geodesics they follow." (6:51) I chuckled.

[@stevejobs5488]

_our balls_

[@Inertia888]

"nerdery".... as of today, definitely one of my favorite words! 🤓🔎

[@FirstRisingSouI]

Penrose has also recently extended the diagrams to the left and right, in the Conformal Cyclic Cosmology model. Are we going to have an episode on that?

[@ATX_Engineer]

It looks implied that the left and right side extend infinitely. Again, it’s a donut

[@Bandofmodernbrothers]

What if the Penrose donut ring was the ring around a black hole like Matt explained in his video which is inside a black hole. That would be mind blown!

[@StumpyDaPaladin]

@@ATX_Engineer mmm donut. Which means that The Simpsons is really on that time travel business

[@nmarbletoe8210]

yes let's do!

[@JK_Vermont]

Z Hud it’s 10pm and now I want a donut

[@polygondwanaland8390]

How much of the weirdness is actually weirdness, and how much is the math being broken? Because the whole "closed timelike curves" thing usually means math is broken.

[@eugenekozlov1504]

IMO the “multiverse” part already means that math is broken. I mean, rotating black hole is something you can _make_. Assuming there are multiverses reachable from black hole, does it mean that you can actually make infinite multiverses by creating a black hole of arbitrarily small size? Sounds implausible.

[@Ricocossa1]

@@eugenekozlov1504 implausible, but not contradictory. Closed tulimelike curves on the other hand are an open door to all sort of time travelling paradoxes.

[@Drkwll]

@@eugenekozlov1504 I think it's more of a black hole connecting two universes together.

[@eugenekozlov1504]

Drkwll but it is impossible. You cannot “open” black hole into existing universe. All universes you can possibly travel to contain exactly one eternal black+white hole. Therefore, these universes do not exist until this black hole forms.

[@Drkwll]

@@eugenekozlov1504 To be honest, I don't know. I'm just guessing.

[@HighPokerChessPL]

6:09.. THAT'S ENOUGH. GOOD WORK.. MADE ME WALK AROUND AND LOOK AT THE SKY.. THERE ARE PEOPLE NOW ON THE STREET.

[@doemacmonkey]

“When your balls rebound...let’s push a little harder” - not a TOS violation, I swear!

[@kenetickups6146]

C O C K A N D B A L L T O R T U R E

[@d3vitron779]

From Wikipedia, the free encyclopedia at www.wikipedia.com/CBT

[@shibomi1]

"Now you're thinking with portals"

[@mthumpherys]

Thank you to you and your team for producing these videos! They've long moved past my understanding, but I enjoy them all the same! If we had physical access to a black hole what are some experiments that could be done that could advance our understanding of space time?

[@einstin2]

Question: As black holes are said to evaporate (something that I assume also applies to Kerr black holes), and space and time switch places beyond the event horizon, would the effect of passing through the event horizon effectively be the process of this evaporation? As you (a 3 dimensional object) pass through the Kerr black hole and are annihilated by these incredible forces, some of this energy and information is deposited in the form of energy during evaporation. So the white hole is actually a mathematical representation of this process of energy conversion. In essence, the question I am asking is how much of this changes when not dealing with an eternal black hole? Is it simply interpretational or is it possibly completely different?

[@exoplanets]

Interesting

[@danieljensen2626]

I think it's probably completely different. All of these models are purely general relativity, you only get Hawking radiation when you start to mix in quantum mechanics. Adding in QM probably changes a lot of other things from these models but I bet we'd need a much better description of quantum gravity to know for sure.

[@kettvektor8037]

No.

[@kiancuratolo903]

There's a reason they add eternal to the description for the equations, the equations don't solve a blackholes beginning, or its eventual end through Hawking radiation. For one, it came about before it could even solve for the second.

[@Breeze_E]

Sup dude, hawking radiation is the result of matter-antimatter particle pairs popping into existence right at the event horizon. Normally these pairs instantly annihalate eachother, but at the event horizon one particle is pulled in while the other particle is ejected. I forget how this ties into the black holes mass, but I know these pairs come from the mass of the black hole.

[@sehihiwaneze3426]

happiest moment of my day: seeing a notification from this channel

[@Aidnidmsosj]

If watching this in a ringularity you would be watching time space instead of space time

[@robertschlesinger1342]

Very interesting, informative and worthwhile video.

[@123FireSnake]

Sooooo technically i can with my trusty map get "back" to the origin universe by going forward until i find a replia of it due to being able to go forward to new universes for as long as i want ... Got it.... Thought experiments aside, how would all this look like if we hold to our "knowledge" of not being able to exceed the speed of light in the torus on the other side of the ring singuularity, does it only do away with the time travel or the entire white hole part?

[@kevin_dasilva]

@CRIMNALSNEAK I loved this answer. If it weren't for you I would just say that we would die (ripped atom by atom) basically instantly before getting anywhere close to the singularity, that famous name that makes me want to go to my nearest italian restaurant

[@mustafaelbahi7979]

If the human mind is unable to visualize multiple universes, can a computer visualize multiple universes? It is simply a simple trick.

[@ConquerYou]

We’re about 50 iterations off the Finite Central Curve.

[@nif4345]

Say what? Oh right PA broken universes Huh

[@5488awestify]

You’re the man I learn so much from watching your channel. I am going back to college for physics. Thanks for the inspiration!

[@billy77860]

i'm totally imagining a sci-fi civilisation that teleports "singularity-mills" directly past the inner horizon to extract energy from the inner rotation, which would somehow be entangled to some turbines outside the black hole to make energy None of it really make sense but it sound too cool so I need to create some lore around that. The madness of physics is just so much of a infinite well of inspiration

[@doommaker4000]

Not exactly this idea, but Kurzgesagt has a video on how to extract energy from black holes

[@TKUA11]

You hit the nail on the head. This is all science fiction. For people who believe only in the physical world, this takes a bit too much faith for me

[@technocore1591]

The Penrose diagram image at :40... I want that as a black light poster please.

[@420subswithnosubs]

I'll sell you one for 120

[@MiniLuv-1984]

What does it mean to "fall" and "inside" mean when one crosses a black hole event horizon where, what was a space dimension intersecting the singularity, is now a time dimension that I presume now intersects the singularity?

[@asbjo]

SPACETIME! Day saved! Edit: This broke my brain. More than any other PBS Space Time episode. I will have to re-watch tomorrow.

[@dustinjames1268]

These episodes tend to assume you have a baseline knowledge of know these things work Its why most people leave these videos utterly confused Don't feel bad for having to rewatch multiple times or refer back to older episodes. Its part of the learning process friend

[@semaj_5022]

Yeah, seriously. Outside of most of the equations I tend to understand more than I would expect to of a lot of what Matt says, but for some reason he lost me so many times in this one. Definitely gonna have to come back again tomorrow too.

[@asbjo]

@@dustinjames1268 I would like to think I have a decent understanding on the intuitive level and thought visualisations that you need, to be able to follow most other Space Time episodes. This one just took, basically, all those previous videos about Penrose diagrams and black-holes and all the other spacetime breaking stuff and quick-fired them in a constant stream, while intertwining it all with each other. I don't have a formal education in astrophysics, so all PBS Space Time content only gives me that "visual imagination" and "intuitive feeling" about how the universe works. The method hasn't failed me before this video. And even though the equations do make good sense to me, if you would ask me to rewrite them and use them in practice, I would not be able to. .... Yet... Regarding this video, it is just a question of taking the time to sit down and break the events down in segments, and understand them one by one, and then chain the whole chain of events together. Across the multiverse style. ;) But thanks for the encouragement.

[@asbjo]

@@semaj_5022 Exactly. ^^

[@CarthagoMike]

Lets take a moment to appreciate everything Penrose has done for the advancement of our understanding of space-time, and the surprises that he might still have up his sleeve in his ever-ongoing research.

[@TheDavidlloydjones]

Nice tiles. But does that make up for his "consciousness" nonsense?

[@Fleurlean4]

David Lloyd-Jones Is this nonsense only from when he’s at Rogans podcast or does he say this somewhere else?

[@TheDavidlloydjones]

​@@Fleurlean4 I don't know anything about Rogan's podcast. I'm thinking of his claim about microtubules being the seat of consciousness for some sort of totally hocus-pocus reason, which I probably read about in some Scientific American, Martin Gardner, columns thirty years ago... Purest lunacy.

[@Fleurlean4]

David Lloyd-Jones Very strange.

[@ysf.3393]

Can we please get a shirt with the full Penrose diagram? Instant buy.

[@Scribe13013]

This video turned me into an unstable genius

[@AmithRamsumair]

Show me what you got.

[@72marshflower15]

Amith Ramsumair ...of the 10-26 dimensions thought to exist so far, depending which string theory you chose, one of them belongs to ideas and concepts. If ideas and concepts have their own dimension, then they could very well have their own form of “ecosystems”. That very well could be us. If we are the ecosystems for ideas and concepts, then we are simply reemergent algorithms and doppelgängers aren’t just physical... Corporations call ideas and concepts “creatures”. We face one that religious scholars identify as “The Beast”. It’s a thought algorithm that, by its nature, seeks to end all life on earth. It’s supported by a movement known as “Zionism”. What this all leads to is a challenge of creation. If there is no sentient life to gauge the existence of the universe, does the universe exist to begin with? Unstable genius that... 🙃 Also, intelligence is relative as everyone is stupid in their own ways. I figured all this out by applying objective laws to political theory, and low beyond, the objective laws emulates physics..

[@BigMobe]

When you think you understand, then you have to start watching all of the videos in the series again to figure out where you got lost.

[@1laurelei1]

Just got back from there. Nothing helped with "space and time switch". Was literally yelling wait! wait! at my phone while I was queuing the previous video. Lol

[@pushbaner5219]

KZbin why is this not trending? instead of cosmetics or personal life related vlogs!! this video is so well made and qualifies as good infotainment!!!

[@557andrea]

At every horizon is associated a Temperature, since Kerr (and Reissner-Nordström) Black Holes have two horizons an observer in the region between these two horizons does see both radiating?

[@JoeJoeTater]

I would think the inner horizon would only radiate inwards, since time-like paths can't travel out from it.

[@TehJumpingJawa]

He is not a man. He's the holy Half-Dead who has seen the UnderVerse!

[@CheezyDee]

You keep what you kill.

[@TenetNosce]

Well said!

[@DanteKG.]

Someone promoted him...to full-dead

[@mrsoggywaffles59]

Kudos to the guy that went out and mapped the multiverse for us to see.

[@boch2411]

No need to map it when you just emc2itup like a cool kid

[@mh6276]

@@boch2411 You mean solve the Einstein-field equations for a Kerr black hole and you get a nice map.

[@ytbobo31]

This time I really do think you made everything up.

[@MrTripcore]

Those were the other times

[@oisnowy5368]

I've always been a time traveller. Going at a steady pace of one second per second.

[@TheDavidlloydjones]

You're in the wrong newsgroup. You want reasonable-and-intelligent. Two doors down on the left.

[@etherealworrier]

Y'know, relatively speaking given the close proximity to Earth.

[@whitejesus9115]

That's a chimo joke you just made

[@chegeny]

Thanks Matt. I just watched a lecture by Sir Roger Penrose at Gresham College and had to watch your video again in an attempt to learn a bit more. Turns out quite a bit more. Thanks again for your time and work putting it all together.

[@nenmaster5218]

I feel like many Atheists and Science-Fans dont realize how much those 2 Overlap. And i even add a Third: Conspiracy-Debunk-Channel. Kent Hovind is a good Way to measure this constant Overlap in Content: Hes covered by all 3 Kinds of Channels, just like Flat-Earth and Evolution-Denial. I think the Fans should be more aware that theres more Fun for them to have.

[@josephsalomone]

Does this mean that I can now get in my spaceship and start my promising career as a space cartographer?

[@TheDavidlloydjones]

You can but there's no room in the capsule for that big box of crayons.

[@josephsalomone]

@@TheDavidlloydjones oh man, I'll have to bring my small box instead. Do you think I'll be able to refill my crayolas in future universes?

[@Ethan-gb3zh]

the best part is you can keep selling your maps to people in the new universes and just hop into a black hole and go on to scam the people in the next universe with maps that they'll never be able to use

[@josephsalomone]

@@Ethan-gb3zh They could still use them to confirm models and ideas about how universes work in general, as you would see entire lifetimes of entire universes each time. But as a map, quite useless, unless they figure out a way to travel faster than light by using the ring singularity.

[@TheDavidlloydjones]

@@josephsalomone According to the best information available on the subject, Crayolas are the dominant lif form on 0.00072917...% of ~iverses out there. In there. Wherever there. Also life forms. Too.

[@FlesHBoX]

Psh, Everyone knows that the fifth element is love... It's how we got our moon.

[@blackshard641]

Multipass.

[@jamesdriscoll9405]

@@blackshard641 Anybody else want to negotiate?

[@nmarbletoe8210]

@@jamesdriscoll9405 Negative. I am a meat popsicle.

[@Wpjgdmtu]

WHEN THE MOON HITS YOUR EYE LIKE A BIG PIZZA PIE THAT'S AMOREEEEEEEEE

[@CheezyDee]

@@jamesdriscoll9405 Smoke you!

[@elisaseller7022]

Again I have the feeling that if I whatch it 100 times I will get it... So it is not possible a white hole existing or matter going trough it but is possible that the fabric of space itself can go through it? If that will be possible, it will make sense that the big bang could be a white hole that is accelerating the fabric of our universe by pouring "space" into our universe "from another universe" and we will never be able to see it because it is in our past? It's a total non sense I know just curious and ignorant. Great episode.

[@michalsejak]

Sam: "DESTROY IT!" Kerr: "No."

[@onemadscientist7305]

Criminally underrated.

[@KungKras]

@@onemadscientist7305 indeed

[@MrTripcore]

Destroyed god and kept going GG

[@TenebraePatruus]

Question: What would happen if an entangled particle fell into a singularity. Would we be able to receive measurements from it?

[@nmarbletoe8210]

yes, but we could never confirm if we did or not, so no.

[@SigmaOfMyParts]

how about sending mire then?

[@jonscholes8721]

@@nmarbletoe8210 Why are you such a nob ? The answer is No. Not some weird.....well, yes, but no, but yes, but maybe but ive no idea....The answer is a simple NO.

[@Mernom]

Pretty sure that you can't use measurement data from entangled paticles without measuring both by definition.

[@nmarbletoe8210]

@@Mernom what do you mean by "use" measurement data?

[@rareschelariu3]

so..when does Hollywood make a movie inspired by this episode?...what a wild ride that would be!

[@sumans7620]

Been waiting for this episode a long time; seems you guys have a lot of stuff on your mind! Great video, by the way. Also, can you please print this map on posters? I would totally buy it, and so would other spacetimers. Edit: Also please print it on a towel as quite a few people want it. _(Insert reference to A Hitchhiker’s Guide to the Galaxy here)_

[@denimchicken6549]

You seem like a real hoopy frood.

[@cosmicraysshotsintothelight]

You already bought it 42 times and you just don't know it yet.

[@sumans7620]

Dave Cotterill Thanks :)

[@swbaxter13]

"Order of Hermes, or maybe Hufflepuff." Man, if you thought the Mage RPG folks were coming for you before...

[@martinsirois3770]

He’s a Void Engineer, if anything. :-)

[@silmarian]

That line cracked me up

[@juliahenriques210]

True. He runs a Virtual Ecstactic show for... the Order of Hermes? What?!

[@stathis2037]

3:54 "Down becomes the future". My brain hurts trying to understand this

[@blackshard641]

7:53 "...the ring is a naked singularity, as well as being repulsive." Way to astral body shame, Matt. Right up until a moment ago, you were calling it attractive, too.

[@camerons6028]

in the theory of the big rip/stretch at the end of the universe, when space-time itself accelerates faster then the speed of light, dose the ring singularity brake apart? or dose it lose it ring shape and become a line singularity, and if so, how dose that affect the inner workings of the black whole?

[@EpicMiniMeatwad]

A singularity is a mathematical error, and infinities should not be appearing in the real universe. The black hole is destroyed.

[@EpsilonKnight7]

​@@EpicMiniMeatwad The gravitational binding force at the "singularity" doesn't need to be infinite to always be greater than the outward pressure of expanding space in a Big Rip. The energy of the Big Rip would always be finite, too, even after 10^10^10^45000 lifetimes of the universe, and the perpetual collapse of an object *approaching* infinite density (to the absolute limit that anything real can) might be too strong to overcome. There's too many questions left to be answered to pretend like we know.

[@EpsilonKnight7]

The energy required to dissipate a black hole is certainly higher than the quark binding energy, and quantum theory dictates that the energy required to pull apart quarks will immediately create new quarks. Does this apply to the energy of an expanding spacetime? All we need to do is unify relativity and quantum chromodynamics to find out (this exercise is left to the reader)! The Big Rip decimating all quantum fields to the point quantum excitations can no longer exist -- where all quantum waveforms are larger than the cosmic horizon and all energy is destroyed -- probably means we haven't got the complete picture of dark energy, yet, or at the very least that its strength cannot increase limitlessly.

[@soldatwalmart9515]

I really don’t like being a grammar nazi but, DOES* (😂❤️)

[@enaidealukal4105]

@@EpicMiniMeatwad can you point me to where this proposition is established as either a tautologous/provable statement of logic, or an observationally-proven empirical fact? Spacetime singularities may well represent an artifact of the math (i.e. a "mathematical error", rather than anything real or physical), but we don't KNOW that to be the case either, and probably won't know until we have a complete and successful theory of quantum gravity

[@ilkoderez601]

Episodes like these are what Space Time is all about (or what got me into watching SpaceTime).

[@thesinofpride9433]

7:48 - that's when you know it's time to get schwifty

[@JK_Vermont]

SHOW ME WHAT YOU GOT!!!

[@headhertz8914]

We're getting closer to finding Miles Morales every day.

[@Nanamowa]

I love morels.

[@vitalijslebedevs1629]

Great cartography skills. Recognized my home stright away just from the thumbnail! P. S. I believe i was lost once outside that map.

[@MarloTheBlueberry]

... *outside the map?*

[@ragingfred]

Can you guys do a video on naked singularities, or the anti gravity universe you get into by traveling through the ring's wormhole?

[@ploppyploppy]

Ok I've reached the point where I couldn't understand 99% of this. :) I'm too dumb for this level of video.

[@dredelcottcryptozooligist4101]

99% of us dont understand it either, perfectly normal

[@mydogbrian4814]

> There is nothing to understand; - Its just another "Alice in Wonderland" story in untestible psuedo science geberish. - To start; Have you, or anyone else, ever seen a white hole? Even though they would be the brightest singularities in the universe. - If not, why then speculate any further when the very premise, (the very foundation) of all this speculation is on very shaky grounds. Its like trying to build the worlds tallest skyscraper on quicksand. - And dont have blinding faith in the power of mathamatics to predict outcomes. In 1902 the imminent mathematical physicist Lord Kelvin proved mathamaticly that heavier than air, manned flying machines were a physical impossibility, and man would never fly.

[@seriousarius]

I just listen to his voice to fall asleep

[@ploppyploppy]

@MyDog Brian Well I understand that maths and science are continually changing when evidence is gathered. If they didn't nobody would have bothered proving Lord Kelvin wrong and by your logic should have stopped speculating. However he didn't have in mind the concept of the current plane shape in his mind... that is why maths and science are important to approach from new angles. Also your assertion that a white hole would be the brightest singularity is incorrect (over time). They do not function continuously - just for a brief moment. Therefore you would have to be looking at the exact spot at the exact right time for a very small period of time - very unlikely. What I mean was that I didn't understand 99% of the *hypotheses*. Of course nobody can know for sure - that doesn't stop maths making sometimes 100% accurate predictions as well. The Higgs Boson particle, black holes, quantum entanglement - all theorised and mathematically proven way before they were discovered. Should we have just stopped 'speculating further' when some people said at the time they were impossible? I would much rather there be a lot I don't understand (and can try to introduce concepts to myself to aid understanding) than just dismiss everything because I don't understand it. Ignorance (for me) is not bliss. So Matt... love the videos...continue pushing my boundaries of thought please.

[@meekerdb]

Like the Schwarzschild solution, the Kerr solution is for an eternal static black hole. How seriously should we take the internal structure as a model of a real black hole that forms from collapse of a star?

[@Tenly2009]

It’s about time that we see a relative comment that doesn’t take up too much space.

[@nziom]

So what about a rotating charged black hole at the same time how much charge and rotation is needed to stabilise the singularity

[@chrismanuel9768]

This is funny because when I saw the Penrose Diagram the first time I thought "If time turns 90° doesn't it turn again coming out?" and wondered if that would be covered at some point. Here we are!

[@Ender586]

Haven't watched yet but I'm sure it's another great video 👍🏼

[@garryleonberger882]

I noticed you seemed to include the term “antiverse” in your diagram at the beginning of the episode, but then never mentioned it later on. Was this a term y’all decided to discard; is it that “bizarro” region you described?

[@eduardoGentile720]

I still don't understand why if you cross the middle of the ringularity you go in broken physics land (the region in the penrose diagram that is next to the wharmholes) where there are close time-line loops. What are the properties of the antiverse and why isn't it just part of the wormhole?

[@Luke96Green]

@@eduardoGentile720 yeah, what is this region? It doesn't seem to be a "universe", are we travelling outside of the multiverse? Somewhere else? Super interesting

[@3rdcoasttoast201]

Deadpool: breathes a sigh of relief at his balls rebounding out of the Ring Singularity

[@anthonydunn729]

Wouldn't it be more accurate to call something a "counter-gravitational" force than it would be to call it "anti-gravitational" unless it can somehow effect the way gravity itself is working?

[@MultiSteveB]

"Relative to the rest-frame of the cosmic microwave background radiation". So is the CMB considered to be (as close as possible to) an actual rest-frame? Do the virtual particles that pop in and out of existence do so also "at rest" relative to the CMB? Note: Note a physicist, so please forgive me if I used some terms poorly (or worse). :)

[@scienceface8884]

"I've always thought of myself as more Order of Hermes" 17 min talking about black holes, relatively and the multiverse, not even a passing mention of sympathetic links, destiny or the spirit planes: You're not fooling anyone, Technocrat. Keep up the good work, though, this was very enlightening!

[@osmosisjones4912]

Sometimes time travel maybe nessarary for causality like. Creepy action at a distance

[@SKyrim190]

"Ok, let's go through this one more time. My name is Peter Parker"

[@nmarbletoe8210]

"With great power comes great expenditure of energy per unit time."

[@dmitryribchiuk8045]

hope that all the viewers understand your videos because they are awesome)

[@dauntless64]

Matt, I’m curious, how do these spinning Kerr black holes relate to the information paradox?

[@nmarbletoe8210]

They probably do not affect the paradox. These Penrose diagrams been around a long time, so if they solved the paradox it woulda been solved long ago

[@dauntless64]

Never new that. Thanks :)