Mapping the Multiverse

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PBS Space Time

PBS Space Time

2 жыл бұрын

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This is a map of the multiverse. Or in physics-ese, it’s the maximally extended Penrose diagram of a Kerr spacetime. And in english: when you solve Einstein’s equations of general relativity for a rotating black hole, the universe does not come to an abrupt halt at the bottom of the gravitational pit. Instead, a path can be traced out again but you do not end up in the universe that you started in. Like I said, it’s a map of the multiverse.

Hosted by Matt O'Dowd
Written by Matt O'Dowd
Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski
Directed by: Andrew Kornhaber
Camera Operator: Bahaar Gholipour
Executive Producers: Eric Brown & Andrew Kornhaber

End Credits Music by J.R.S. Schattenberg: kzhome.info/get/Rl6.html...



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Пікірлер: 3 114
Andrew Jensen
Andrew Jensen 2 жыл бұрын
I feel like every time we see a Penrose diagram in Spacetime, it is slightly larger than the previous one.
Popeguard
Popeguard Ай бұрын
Mmm
Popeguard
Popeguard Ай бұрын
@Rick mmmmmm Mmmmmmmmm
Mustafa Yilmaz
Mustafa Yilmaz 3 ай бұрын
@Blackhorn & Lynx Evet uzay sürekli genisliyo ve soguyor
Blackhorn & Lynx
Blackhorn & Lynx 3 ай бұрын
Ever expanding, and just keeps getting cooler
Mustafa Yilmaz
Mustafa Yilmaz 3 ай бұрын
@SeaJay Oceans Evet Jay Görüşleri çok dar Üstlerindeki elbiseleri çok daha dar... Yuruyemiyorlar...robot gibi ...korkuluk gibi...kazık gibi...öylece duruyorlar..
Enai DeaLukal
Enai DeaLukal 2 жыл бұрын
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.
Nen Master5
Nen Master5 Ай бұрын
@Enai DeaLukal 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.
Enai DeaLukal
Enai DeaLukal 3 ай бұрын
@Kleos um... what?
Kleos
Kleos 3 ай бұрын
Something fascinating happened on a forum in a span of a few days and it has caused quite a stir in certain parts of the Internet. A person by the moniker of Insider claimed he was from a ruling bloodline and gave the people a chance to ask everything they wanted and Insider would answer. At first it looks like another internet hoax, some lightweight questions were followed by lightweight answers, but then things started changing drastically. Anyone who understands dialectics knows that the answers Insider gave were designed to force/provoke others to ask questions which went to the core of the matter. First some questions are being asked by Insider like "Are you really living on the planet you think you are?" which made people react differently than before. The answers this person started giving to those following questions showed a deep, broad understanding of philosophy, history, metaphysics, religion, magic, politics, and more in a way which is very innovative, detailed and some answers are thought provoking to say the least. What amazes is that Insider answered these questions in a very short time span and if you keep in mind that the topics are diverse, some in depth and some epic answers showed up literally minutes apart, one must wonder how it was done. Copy/paste from internet? I checked intensively and the sentences Insider used cannot be found on internet. Like one person observed, this was way over the heads of the usual suspects. Some people started getting upset, others were drawn to it and this all lead to a dialogue where so much was revealed, including by the other posters that it can be studied for years to come. Sounds hard to believe? Read on.. 1 of 2, both very good reads www.amazon.co.uk/dp/B0877BQCGD/ref=cm_sw_r_cp_apa_glt_CTTKRX7BBH27GCXCAV03 ........
Tarek Chahattou
Tarek Chahattou 2 жыл бұрын
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
Leonardo Goulart
Leonardo Goulart 2 жыл бұрын
"Multiverse cartography..." This is gonna be one of those hard mode episodes, isn't it?
Kleos
Kleos 3 ай бұрын
Something fascinating happened on a forum in a span of a few days and it has caused quite a stir in certain parts of the Internet. A person by the moniker of Insider claimed he was from a ruling bloodline and gave the people a chance to ask everything they wanted and Insider would answer. At first it looks like another internet hoax, some lightweight questions were followed by lightweight answers, but then things started changing drastically. Anyone who understands dialectics knows that the answers Insider gave were designed to force/provoke others to ask questions which went to the core of the matter. First some questions are being asked by Insider like "Are you really living on the planet you think you are?" which made people react differently than before. The answers this person started giving to those following questions showed a deep, broad understanding of philosophy, history, metaphysics, religion, magic, politics, and more in a way which is very innovative, detailed and some answers are thought provoking to say the least. What amazes is that Insider answered these questions in a very short time span and if you keep in mind that the topics are diverse, some in depth and some epic answers showed up literally minutes apart, one must wonder how it was done. Copy/paste from internet? I checked intensively and the sentences Insider used cannot be found on internet. Like one person observed, this was way over the heads of the usual suspects. Some people started getting upset, others were drawn to it and this all lead to a dialogue where so much was revealed, including by the other posters that it can be studied for years to come. Sounds hard to believe? Read on.. 1 of 2, both very good reads www.amazon.co.uk/dp/B0877BQCGD/ref=cm_sw_r_cp_apa_glt_CTTKRX7BBH27GCXCAV03 ........
uwau
uwau 2 жыл бұрын
@Astute Cingulus Scientists agree that general relativity is coincident with findings, not the truth. Fun dark times ahead
Thomas Evans
Thomas Evans 3 ай бұрын
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.
MargoMB19
MargoMB19 2 жыл бұрын
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.
r-pupz
r-pupz 3 ай бұрын
I've been there, I hope you're doing better now! These videos got me through depression and bereavement, they're so fascinating it takes me out of my head for a while, if u know what I mean.. anyway I'm really hoping you're doing okay now 💖
nell kellino-miller
nell kellino-miller 3 ай бұрын
Physics is art. It can be, at least, viewed properly. Or rather, we can look at things other people have spent all of their mental and emotional energy trying to make sense of, or otherwise trying arrange in some vague sort of meaningful order, and within that work we can see a reflection of ourselves and all of our hopes, dreams, fears, and uncertainties. The Mind is a mirror.
Space
Space 6 ай бұрын
Reading the relevant papers is like what you describe but times ten, put on your favorite music and read away! (sci-hub and arvix are great for getting research papers) Also, don't worry about the crazy-physicist math in the papers, just do your best to understand what you can and refer back to them every time your math skills increase.
Chinmay Krishna
Chinmay Krishna Жыл бұрын
If you want to really understand these videos, I recommend starting off with channels like Arvin Ash and Kurzgesagt. After you have built your foundation, head over to veritasium, minute physics, fermilab, physics girl, looking glass universe etc. After you have done that, come over to a bit old videos of spacetime. Learn relativity from veritasium, some Wikipedia reading and special relativity from the world science festival channel (there is a 12 hour lecture by brian greene). If you really want to go in-depth of general relativity, listen to the lectures of general relativity by Leonard Susskind posted in the channel of the Stanford university. After learning about black holes and penrose diagrams from PBS SpaceTime itself, come to this episode.
Nicolas Gleason-Boure
Nicolas Gleason-Boure 2 жыл бұрын
I'm disappointed that the ring singularity wasn't called a "ringularity"
F4ZE PACINO
F4ZE PACINO 23 күн бұрын
same
37Trash Panda
37Trash Panda 28 күн бұрын
Your parents must be proud
James Elliott
James Elliott Ай бұрын
@Edward Gentle Asking anybody about politics is like being that drunk man!
SeaJay Oceans
SeaJay Oceans Ай бұрын
They named it 'ring singularity' because " Ringworm Hole " sounded like an infection, not physics... :-/
Mayhem Discord & Chaos, Oh my!
Mayhem Discord & Chaos, Oh my! Ай бұрын
Wouldn't that be the RINGU-Larry T.???
Robert Schlesinger
Robert Schlesinger 3 ай бұрын
Very interesting, informative and worthwhile video.
Suman S
Suman S 2 жыл бұрын
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)_
Suman S
Suman S 2 жыл бұрын
Dave Cotterill Thanks :)
Cosmic Ray's  Shots into The Light
Cosmic Ray's Shots into The Light 2 жыл бұрын
You already bought it 42 times and you just don't know it yet.
Jr M
Jr M 2 жыл бұрын
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 :)
Kleos
Kleos 2 ай бұрын
@Techno Mage500+ bloodlines, more above and below these. en.m.wikipedia.org/wiki/List_of_noble_houses
Kleos
Kleos 2 ай бұрын
@Techno Mage research the Black nobility and Papal Bloodlines. And the video on my channel
Techno Mage
Techno Mage 2 ай бұрын
@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.
Kleos
Kleos 3 ай бұрын
Something fascinating happened on a forum in a span of a few days and it has caused quite a stir in certain parts of the Internet. A person by the moniker of Insider claimed he was from a ruling bloodline and gave the people a chance to ask everything they wanted and Insider would answer. At first it looks like another internet hoax, some lightweight questions were followed by lightweight answers, but then things started changing drastically. Anyone who understands dialectics knows that the answers Insider gave were designed to force/provoke others to ask questions which went to the core of the matter. First some questions are being asked by Insider like "Are you really living on the planet you think you are?" which made people react differently than before. The answers this person started giving to those following questions showed a deep, broad understanding of philosophy, history, metaphysics, religion, magic, politics, and more in a way which is very innovative, detailed and some answers are thought provoking to say the least. What amazes is that Insider answered these questions in a very short time span and if you keep in mind that the topics are diverse, some in depth and some epic answers showed up literally minutes apart, one must wonder how it was done. Copy/paste from internet? I checked intensively and the sentences Insider used cannot be found on internet. Like one person observed, this was way over the heads of the usual suspects. Some people started getting upset, others were drawn to it and this all lead to a dialogue where so much was revealed, including by the other posters that it can be studied for years to come. Sounds hard to believe? Read on.. 1 of 2, both very good reads www.amazon.co.uk/dp/B0877BQCGD/ref=cm_sw_r_cp_apa_glt_CTTKRX7BBH27GCXCAV03 ........
mthumpherys
mthumpherys 2 жыл бұрын
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?
Onyx Path Publishing
Onyx Path Publishing 2 жыл бұрын
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.
Dirk Bastardrelief
Dirk Bastardrelief Жыл бұрын
I’m waiting for a ref to “Heirophant Apotheosis: The Raising”
Felix Franz
Felix Franz 2 жыл бұрын
I love your visualizations and the sound design. Great work!
Anthony Dunn
Anthony Dunn 2 жыл бұрын
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?
Chaz Sewell
Chaz Sewell 2 жыл бұрын
Interesting video thanks! It got me wondering though. Would accelerating to near light speed look the same as trying to escape from a black hole to the person accelerating? As I understand it the closer to the speed of light you get the less light behind you would reach you and eventually only light coming at you from ahead would reach you making it look like a black hole. So if you just suddenly woke up on this hypothetical ship that you didn't know if it was accelerating to the speed of light or escaping from a black hole what could you observe to tell which scenario you are in?
Arthur West
Arthur West 2 жыл бұрын
You’re the man I learn so much from watching your channel. I am going back to college for physics. Thanks for the inspiration!
Filipiano
Filipiano 2 жыл бұрын
Very exciting video. I was wondering, besides infinity, is it also possible that the multiverse map is cyclical? Let's say you have the initial 'our universe', 'parallel universe' and 'black hole', but then rather than adding besides the 'past white hole' and its wormholes another 'new white hole' with its wormholes on top, you just cut out the whole picture, fold it, making the the flat map sheet into a curved / circular map sheet, and have the 'past white hole' and its wormholes connect also on top of the map to the black hole, replacing the 'new white hole'. Then rather than an infinity of spacetimes, you'd have a circular spacetime. I'm just a philosopher with some background in philosophy of time - do tell me if this is impossible due to the equations or something. Curious on your thoughts.
Steve Hinkle
Steve Hinkle 2 жыл бұрын
In the best scenario, it goes in a loop, and it's still infinite, but it ends up back in our universe at some point. Also, the thing about space and time switching roles creeped me out. I had dreams about it. Thankfully, I'm glad the ergosphere gave me a boost out of there in those dreams.
Filipiano
Filipiano 2 жыл бұрын
Very exciting video. I was wondering, besides infinity, is it also possible that the multiverse map is cyclical? Let's say you have the initial 'our universe', 'parallel universe' and 'black hole', but then rather than adding besides the 'past white hole' and its wormholes another 'new white hole' with its wormholes on top, you just cut out the whole picture, fold it, making the the flat map sheet into a curved / circular map sheet, and have the 'past white hole' and its wormholes connect also on top of the map to the black hole, replacing the 'new white hole'. Then rather than an infinity of spacetimes, you'd have a circular spacetime. I'm just a philosopher with some background in philosophy of time - do tell me if this is impossible due to the equations or something. Curious on your thoughts.
Edy KS
Edy KS 2 жыл бұрын
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?
Jg235
Jg235 4 ай бұрын
adrenochrome
Lyle
Lyle 2 жыл бұрын
Those are some mighty good genes
Lyle
Lyle 2 жыл бұрын
HOLLY MOLLY
Blackstar 76
Blackstar 76 2 жыл бұрын
He's obviously in his 40s.
mosquitobight
mosquitobight 2 жыл бұрын
Not many twentysomethings have gray whiskers on their chin
Rezerk_9
Rezerk_9 15 күн бұрын
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!
Baron Vladimir Harkonnen
Baron Vladimir Harkonnen Ай бұрын
its so crazy that this man came along with this revolutionary equations of relativity 100 years ago.
Freedomachine
Freedomachine 2 жыл бұрын
How would you visually represent two black holes colliding on a diagram like this one? What would that look like, and how would it affect each universe around them?
MaxthexPfarmer
MaxthexPfarmer 2 жыл бұрын
Could there hypothetically be an alien civilization entirely inside the inner horizon? Could there even be a star system in there if it is a supermassive black hole?
Rasta
Rasta 2 жыл бұрын
"this may sound fun, but there's the inconvinient fact of your utter obliteration" got a real chuckle outta me
Juliano
Juliano 3 ай бұрын
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.
Iago Silva
Iago Silva 2 жыл бұрын
Because that's not an "inconvenient fact", it's a flesh wound
Ginsy George
Ginsy George 2 жыл бұрын
Sir, Your videos are so inspirational to people loves to learn the truth behind the spacetime. You're a very nice teacher. Thank you!
Suchega Uber
Suchega Uber Жыл бұрын
What exactly stops it from spitting the ship out into the same space it went into, just in the other direction a few moments later? Why specifically does it *have* to be a new universe, aside from the fact that it wouldn't fit the pretty picture? We see clearly that the ship is moving through time, but why isn't the universe also moving through time at the same rate?
Faint
Faint 2 жыл бұрын
that was some nice science fiction, unfortunately its based on a lot of assumptions. It has some useful information and is a pretty well thought out theory, but unfortunately we do not have sufficient information about blackholes nor multiverse yet to find out if anything in this video is even close to reality.
Vitalijs Ļebedevs
Vitalijs Ļebedevs Ай бұрын
Great cartography skills. Recognized my home stright away just from the thumbnail! P. S. I believe i was lost once outside that map.
ilko derez
ilko derez 2 жыл бұрын
Episodes like these are what Space Time is all about (or what got me into watching SpaceTime).
Sylvan Pappas-lai
Sylvan Pappas-lai 2 жыл бұрын
Well, had to watch that one twice. Wow. Fantastic explanation. Thank you.
Flux Capacitor
Flux Capacitor 2 жыл бұрын
Hi Matt, Thank you and to your team for making awesome videos. I really appreciate what you guys do. This video blew my mind. Would it be possible to bend space, with a Warp Drive, below an Event Horizon, to cheat the required FTL velocity to elude a singularity? Thanks
Mustafa Yilmaz
Mustafa Yilmaz 4 ай бұрын
Uzayı bükmek yasak Fluks.... Elon Musk tan izin almalısınız.
TurboCat
TurboCat 2 жыл бұрын
Can you guys do a video on naked singularities, or the anti gravity universe you get into by traveling through the ring's wormhole?
Spoony
Spoony 2 жыл бұрын
When travelling the Multiverse, always remember : Don't panic and always carry a towel.
The Grey Goblin
The Grey Goblin 2 ай бұрын
Always be aware of Superhero universes, you may end up caught in the middle of a Crisis
Adrian Mach
Adrian Mach 2 ай бұрын
and once you miss the ground dont think about it
Oliver Gillard
Oliver Gillard 4 ай бұрын
Dont forget to bring a towel
Jeremy Gross
Jeremy Gross 4 ай бұрын
Ah geez Rich, uh I don't know if I can always keep hold of my towel during all our crazy adventures, ya know? I mean what about that time bacteria ate all the cloth in our clothing? Uh, I bet a towel wouldn't have faired any better, ya know? We just, gotta make sure there's enough portal gun fluid and I think we'll be solid.
WonderLoaf
WonderLoaf 7 ай бұрын
Unless you run into the Combine. Then panic.
Feynstein 100
Feynstein 100 2 жыл бұрын
Wow, this really blew my mind. I love physics so much lol
Shudhanshu Verma
Shudhanshu Verma Жыл бұрын
Wow, this video is so well done !
馬璽مستأمن
馬璽مستأمن 3 ай бұрын
This is... absolutely crazy. Spacetime/timespace-based reality... And thus, the opposite of gravity is intertia. And velocity is the quintessential component of existence - as a passionate driver, I love that.
Montrose Deloofs
Montrose Deloofs 2 жыл бұрын
FINALLY an understandable explanation of mass inflation instability. Thank you!
Peter de Havilland
Peter de Havilland 2 жыл бұрын
Really like the art work behind you. Is it made with gold leaf squares ?
Christopher Valkoinen
Christopher Valkoinen 2 жыл бұрын
Woah! Infinite speed‽ What are the implications of that? Can you instantaneously travel back in time to the creation of the black hole? Or to the big bang? Or only to the moment you arrived?
Donald Wile
Donald Wile 2 жыл бұрын
I love this series, including this one ...which is way beyond my understanding. I’m just trying to figure out if I need another beer or not.
Charlie Angkor
Charlie Angkor 2 жыл бұрын
Next video will come with the time and space dimension swapped so that you can experience what it feels like after falling through one of these boundaries that swap space and time. Basically the cube of pixels that the video is (time dimension is one dimension of the cube) will have the horizontal and time axis swapped. The width of the video will be the number of frames. For 50 fps and 17 minutes it will be 51 000 pixels. The number of frames will be the width, let's say 1024 frames. So the video will be 20.48 seconds long. If you watch on a normal system, you will see a sea of horizontal lines which will contain some diagonal lines and will be interrupted every time there is a cut in the video, and this will change as the scanning slice moves through the video. Will need a special patch into the H.264 codec and a recompilation of video decoding libraries and the browser to watch. Otherwise, it will be just an ordinary video explaining about the multiverses and stuff.
Tom Walker
Tom Walker 2 жыл бұрын
I BLOODY LOVE SPACETIME!!! You guys are brill!
David H
David H 7 ай бұрын
Makes me wonder how much energy it would take to cause a black hole to spin versus the energy needed to spin the rest of the universe around (to the same relative angular momentum, moment, and eccentricity)…
SirMan McDude
SirMan McDude 2 жыл бұрын
*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!"
Sid
Sid Жыл бұрын
HERESY
Adrian LeCesne
Adrian LeCesne 2 ай бұрын
I’m really struggling with how spacetime can spin faster than light speed. Isn’t that the speed limit for causality and information? What does it mean to spin faster than that?
Zoltan
Zoltan 2 жыл бұрын
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.
angeldude101
angeldude101 9 ай бұрын
@Chris Manuel The thing is that "Quantum Mechanics" gets its name from the discovery of an absolute minimum.
Chris Manuel
Chris Manuel 9 ай бұрын
@angeldude101 There's always a new minimum. And then we discover something below that. I wonder how many layers deep reality goes.
Chris Manuel
Chris Manuel 9 ай бұрын
One is parallel, the other is future. This multiverse diagram works to include Bot both, but this video only focuses on future universes. You can see parallel universes labeled on the opposite side of our current and future universes. The multiverse includes both parallel and time separated universes.
osdever
osdever 10 ай бұрын
@Obsidian Jane We can't be sure of their non-existence though, can we?
Dean DeanN
Dean DeanN 3 ай бұрын
This "down becomes the future" thing elicits great curiosity in me. Is our own future also down in the very nearly the same sense? Are we within a higher dimensional black hole? I understand that our universe is not equivalent to a three dimensional space plus time black hole, but might it be in higher dimensions? I am thinking of this in a concrete sense ie in the dimensional degrees of freedom of a mathematical description of our physics.
Chris Manuel
Chris Manuel 9 ай бұрын
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!
Mr. Grant
Mr. Grant 2 жыл бұрын
Hypothetical question: It seems impossible for a complex physical structure to follow the path through the black hole but, in theory, would light or compressed matter follow a natural geodesic through to the alternate universe or would something need the ability to accelerate/decelerate to follow that path? In other words, if this is all accurate, is there a passive flow of matter/energy between these parallel realities?
David Fredericks
David Fredericks 2 жыл бұрын
Hi. Love this. Great content. Question......can you guys depict with a visual what the 3D gravitational field of earth looks like? The 2D "trampoline " is too simple. I can't wrap my head around this in 3 Dimensions. Thanks again
Spiritus Terra
Spiritus Terra 4 ай бұрын
Think about a cubic grid, then bulge it towards the center of Earth. I hope this helps.
Extraterrestrial Intelligence
Extraterrestrial Intelligence 2 жыл бұрын
Since you can ride spacetime faster than the speed of light, you could move to the edge of the universe, but you will also „move“ back in time, which means the spacetime of the universe contracts(since we know that space is expanding) and counteracts your movement in spacetime. When you reach the point of cosmic inflation you will be super contracted to the point of time where the bigbang happened and that should be the point where you reach the edge of the universe??? If you move in any direction to the edge you reach the same point??? What would happen to your warping spacetime ship?? Would you die??
Cody House
Cody House 3 ай бұрын
VERY eye opening video. Thanks 😊 I totally forgot about penrose diagrams...
Crooked Paths
Crooked Paths 2 жыл бұрын
8:15 Makes me wonder if it's possible for mass to be recycled back into the universe at a different point in time?
Chant Live
Chant Live Жыл бұрын
One of the most interesting Concepts have had the pleasure to think on. Thank you..
VGames 1
VGames 1 2 жыл бұрын
I have an off topic question, would it theoretically be possible to avoid time dilation when travelling at lightspeed (and maybe beyond)? Because it seems pointless to me to travel to a distant planet while leaving everything behind at the same time. You go to a new planet, come back after some time and realize that you have been gone for like 500 years for example.
MammothBehemoth
MammothBehemoth 2 жыл бұрын
this is my most favorite channel about quantum space time. Makes me feel like I understand it, even if I cant 😅 Still, a lot of fun to watch
MammothBehemoth
MammothBehemoth 2 жыл бұрын
@Paulo Azuela circle of life..haha...like the n-dimensional geometry. I'm just starting to better understand it after a few years of watching these sort of videos...now adding quantum multiverse on top of n-dimensions
Paulo Azuela
Paulo Azuela 2 жыл бұрын
You'll probably understand it later on to the point where you can't understand it anymore.
Ali Fazel
Ali Fazel Жыл бұрын
Does this mean there's a real possibility that leftover particles from matter from our universe that falls into a black hole will end up in another universe? What happens in the Penrose diagram when black holes merge?
Raezores
Raezores 2 жыл бұрын
It just feels like you're explaining how the universe is gonna start and end over and over again.
Nicklas Strand
Nicklas Strand 2 жыл бұрын
@NoxA Eventide LOL i dont disagree (ツ)
NoxA Eventide
NoxA Eventide 2 жыл бұрын
@Nicklas Strand That's kind of nice as we would not have to live the same life over and over again! xD
NoxA Eventide
NoxA Eventide 2 жыл бұрын
@Moses I suppose so. But I would aslo suppose that there is vector equilibrium at the singularity.
Joshua Scott
Joshua Scott Ай бұрын
Great explanation with stunning visuals as usual! With that said, it says "Paralllel universe" at 11:30, bottom left. Lol.
Monte Batts
Monte Batts 2 жыл бұрын
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
pineapplepenumbra
pineapplepenumbra 9 ай бұрын
@Arasonyth But of course, good sir, in polite society one would never pronounce it "Bucket".
Arasonyth
Arasonyth 9 ай бұрын
@pineapplepenumbra "it's pronounced Bouquet"
pineapplepenumbra
pineapplepenumbra Жыл бұрын
@The Pricil Love You slap Hyacinth Bucket on a regular basis?
The Pricil Love
The Pricil Love Жыл бұрын
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
Austin S.
Austin S. Жыл бұрын
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.
shaun humphreys
shaun humphreys 2 жыл бұрын
I've been really looking forward to the penrose diagrams, to mapping beyond the event horizon-your episode 'how blackholes spin spacetime' was a favourite of mine. So lucky to have this exceptional quality science channel available for free-thanks to sponsors. This channel and fermilab are the only ones I watch, with the latter always beginning with mathematical equations on a chalkboard-with a university lecture feel to it. PBS spacetime deals with more higher concepts-taking physics equations to their absolute extremes, and seeing what happens, in a way that is both accessible yet not watered down like other channels do-you include the meaty details incl equations. You amazingly achieve presentations that undergraduate and graduate physics students enjoy, amateur physics lovers, the complete astrophysics novice with reasonable intellect level,and ive even seen professors of physics to enjoy them. unfortunately like with fermilab there are always the few idiots who will write to fermilab every week claiming they have found something that proves special relativity wrong e.c.t. yet lacking the rigorous scientific education or ability to apply rigorous scientific method to even be in the discussion. Such people should be humble and engage with these high concepts with a childlike awe and wonder, with a desire to learn, reading up on more basic scientific principles-for example i am eager to have an intuitive grasp of the mathematical equations that come up in these video presentations and in the science journal papers i read every week, the latest being arxiv.org/pdf/1312.2007.pdf, and arxiv.org/pdf/quant-ph/0105101.pdf, that latter one is my favourite current physicist Yakir Aharanov. so i want to start calculus one, which physicist isaac newton is famed at having invented-allowing him to write his laws of motion, including his 'universal gravitation' and before that i am currently reading a comprehensive book on algebra, geometry and trigonometry-pre calculus to ground myself, as my maths level is embarrassingly low-maths is a use it or lose it skill, like foreign languages. an eight year would beat me at any maths in a test right now. My primary 'obsession' is with spacetime geometries, and the nature of time and time travel using quantum physic and SR plus GR.With the sudden surge in disinformation, a tactic for example disinformation is the primary technique deployed by the russian federation under president putin to toy with the west, with its russian state newspaper inventing a story about hitler's 'mein kampf' being more popular in latvia than harry potter. and this was payback for latvia being now a part of the west, a part of nato, which russia hates, and feels encroached by. And disinformation is rife from the American and British governments during this coronavirus pandemic. and from religious fundamentalists. That is why getting science from authoritative qualified sources is essential.
Mustafa Yilmaz
Mustafa Yilmaz 4 ай бұрын
Arkadaş bu kadar uzun yazı yazilirmi...kısa kesin. lütfen..işimiz gucumuz var...
Aspore
Aspore Жыл бұрын
So the big bang could just be the singularity at "the end of time" looping on itself and the universe truly is infinite in all aspects.
VorpalGun
VorpalGun 2 жыл бұрын
Doesn't this part of relativity kind of fail testability? After all we can only see as far the event horizon, and the results are (as you suggested) somewhat questionable with time travel, naked singularities etc. Is there any reson to not think that more of this is also bogus, such as emerging in a new universe or even the existence of an inner horizon? And we talk about a circular singularity, yet we have no idea what it is like? Is it like a thin line of... well, of what? Presumably, if it is like a singularity in math, it is a point where the function is not well defined, goes go infinty, etc. That doesn't mean that the real universe is also not well defined there (consider the coordinate singularity of the north pole for example: the earth doesn't care about our numbers). All in all, I feel that this episode is perhaps too speculative without being upfront about that fact. Feel free to do this sort of episodes, it is ceriantly fun to let imagination run free, but it also needs to be clear that we really don't know for sure if any part of our model holds in such extreme conditions.
James Hedin
James Hedin 2 жыл бұрын
Supposing you got one of an entangled pair into a new universe, could you use quantum teleportation to bring it back?
Steven Schilizzi
Steven Schilizzi Ай бұрын
Boy, that really got my brain whirring! It almost became Kerr brain. Now I’ll have to look inside for the ring… Brilliant as usual, Matt. But this one I’ll have to watch again. And yet again. And again… ad infinitum.
cubicmetre
cubicmetre 2 жыл бұрын
The ring singularity feels like a mistake resulting from the assumtption that the spin is about a single axis, this assumption was likely perpetuated by visualising the fabric of spacetime in 2D. But in space, objects can spin about all 3 spatial axes, gathering angular momentum in each of these as stuff hits them at different trajectories. For example when the earth formed initially it's spin would of been entirely in plane with the sun, but as objects collided with the earth this spin axis precesses due to angular momentum carried within the other axes. Wouldn't a black hole also be able to hold angular momentum in all 3 axes, spreading the singularity over an elliptical surface thus making the region within the ring inaccessible?
Stephen Ball
Stephen Ball 2 жыл бұрын
"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). :)
stef_iifym
stef_iifym 2 жыл бұрын
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!
doublestrike photo
doublestrike photo 2 жыл бұрын
OK, I have an engineering background and I usually follow these videos quite well... But... This one broke my brain. 😵
Ron DiBiase
Ron DiBiase 3 ай бұрын
What would happen to entangled particles as one travels the multiverse?
Tarek Chahattou
Tarek Chahattou 2 жыл бұрын
Wow, super interesting! i've been thinking about this video for several days now
yumemi13
yumemi13 2 жыл бұрын
Could this ejecting of matter from under event horizon be somehow related to Hawking's Radiation?
ThisFlyingPotato
ThisFlyingPotato 2 жыл бұрын
6:51 "Our balls, and the geodesics they follow, rebound and travel back out." -Matt O'Dowd, 2020
crappo zappo
crappo zappo 2 жыл бұрын
@BoDiggety i have tears in my eyes. So beautiful
Aviad Pineles
Aviad Pineles 2 жыл бұрын
I bet it took several takes before he got through that part without him or anyone else in the room laughing
elck3
elck3 2 жыл бұрын
SupraGuy2jzgte yoo new pick up line! For my nonexistent game.
Joe Campbell
Joe Campbell 8 ай бұрын
Incidentally, I just discovered in my experiments with nostalgia, that "Bristlebane" is still up and running! My old Everquest 1 server! (Also, I can confirm that all galaxies were right on top of each other back then.)
Russell Talley
Russell Talley 2 жыл бұрын
So if I understand correctly, the problem is that we are limited with how far that we can go into space since we have limited resources and outer space goes forever? Also, even if we did have unlimited fuel, a ship would have to withstand a black hole without getting destroyed and have the ability to travel at the speed of light? I’d love to find out what is out there in outer space.
Shaurya Shaktiman
Shaurya Shaktiman Жыл бұрын
Is it possible that light along with other electromagnetic waves travel through a different dimension entirely? Could this explain why the velocity of light or the velocity of any other electromagnetic wave is independent of the speed of the observer or the speed of the source (technically the speed of the observer/source will be perpendicular to the dimension through which light travels, hence the cosine component of the velocity of the source/observer has no impact on the speed of light, thereby making it independent)?
Ty Jules
Ty Jules 2 жыл бұрын
What would a parallel universe be like on this diagram/theroy of reality in relation to our universe?
Thomas Franchi
Thomas Franchi 2 жыл бұрын
1. Is there a video about the different kinds of black holes, how they form, etc? Had no idea they had charges or could lack one... 2. Do the new universes exist in superposition? Or are they fundamentally the same and just other possible universes?
ilko derez
ilko derez 2 жыл бұрын
Bravo. This is a good episode!
david fishwick
david fishwick 2 жыл бұрын
I figured something similar out more than a decade ago........that the negative spacetime region gives birth to infinite negative mass energy and the positive region gives birth to infinite positive mass energy. As negative mass pushes outwards the result is indeed a big bang/white hole. I'm glad i've found someone who has reached the same conclusion.
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