"Some questions spring to mind: - I mean, besides 'What?!?'" I guess he reads the comments after all.

@oldman2800

4 жыл бұрын

The answer of course is.. ........42

@owwmykneecap

4 жыл бұрын

Funnily enough of all the topics on here, the graphic accompanying that statement painted a completely clear picture for me, for once!

@gjorgipeltekovski7516

3 жыл бұрын

I mean I know what a Big Bang is

@cidb.212

2 жыл бұрын

@@oldman2800 I disagree. I think the answer is aliens.

Has got to be the best one yet: Some questions spring to mind. I mean, besides: “What?!?”

@zes3813

4 жыл бұрын

no such thing as best or not or that, say, think any nmw and any s ok

0:41 "Bubbles that are continuously appearing and growing within a vastly large, *spacetime* ." *video ends*

@prakharanand7012

3 жыл бұрын

Lool

@ortherner

3 жыл бұрын

yes

@pierfrancescopeperoni

3 жыл бұрын

Yeah, I automatically thought it ended, so I quickly zoomed out, locked the screen, crashed my phone on the ground, and detonated a nuclear bomb.

This stuff really breaks my brain, but I love it

@kainoakanoe

3 жыл бұрын

Even though my mind can't comprehend everything they're saying, I like this channel lol

@CivilWarcraft

3 жыл бұрын

Fb: #lock3dinthesh3d

@420frankp

3 жыл бұрын

Your minds cant comprehend something that does NOT exist.

@zirconblue1249

3 жыл бұрын

Lol

@z1X2c3V47

3 жыл бұрын

I take solace in the thought that an alternate version(s) of me in another bubble universe(s) knows exactly what Matt is saying.

*Somewhere, Something Incredible Is Waiting To Be Known* _Carl Sagan_

@hynekchalus1

4 жыл бұрын

becouse that is what magicians do...

@kriptonis

4 жыл бұрын

I wear that on a t-shirt 😊

@bradbadley1

4 жыл бұрын

Carl Sagan didn't say this. Sharon Begley did when she interviewed him.

@realpeacemaker7038

4 жыл бұрын

*THE MAN OR THE WOMAN WHO MUST BREAK SOMETHING IN ORDER TO UNDERSTAND IT'S PURPOSE WILL NEVER BE ABLE TO UNDERSTAND ANYTHING* J.R.TolkinLoreMaster 21th century planet earth

@VerisimilitudeDude

4 жыл бұрын

@@realpeacemaker7038 Ivan Drago

All these universes, and I'm still single.

@demandred1957

4 жыл бұрын

*Ooof*

@vladimircanales8410

4 жыл бұрын

Not in the many worlds interpretation

@jaouadharmouchi7465

4 жыл бұрын

Me too

@fulmarmusic1413

4 жыл бұрын

I'll be your gurlfriend.

@jaouadharmouchi7465

4 жыл бұрын

@@fulmarmusic1413 mine too plz?

1:59 so it IS true: our entire universe is an oil bubble floating in a jar, placed on a shelf, in an alien's child room as a science fair project that got a C- 👽

@ArjunSharma-gy1eq

3 жыл бұрын

Yes. I strongly believe that.

@ZZZdead_lox

3 жыл бұрын

That just makes me think about it even more

@thewizzard3150

2 жыл бұрын

Yours maybe, mine got an A.

Best reason to believe in alien forms of life: We exist.

@303storm

4 жыл бұрын

Best reason is the FACT of how many worlds are in THIS smaller type galaxy alone. 400 BILLION if not much more star systems and there are billions of galaxies out there. To doubt we are alone is simply dumb.

@kaito2005

4 жыл бұрын

@@303storm To believe that 400 billion is a huge number in the grand scale of things is also pretty dumb.

@wasd____

4 жыл бұрын

Whether or not alien life exists is really not a very relevant question, though. What matters is whether we will ever possibly interact with it.

@gameresearch9535

4 жыл бұрын

@Chris Chu Supposedly trillions of galaxies, based upon the latest info. I have a video in my playlists about it, on another channel. And I think you meant to say "To think we are alone", the word doubt is to disbelieve which leads to giving up, wrong word. : ) @Winston Deleon I disagree, that's thinking small or "short - sighted", and having too much doubt. The way our emerging technology is coming so fast, and our good innovation, I do believe we will find some bacteria / micro - organisms, and maybe animal / plant life on other planets. You can never say for sure to the absolute.. that we won't find anything or even intelligent life. Because we don't know yet until we search, look at the moons around Jupiter and Saturn, oceans underneath one of them that could have bacteria that could be slowly changing over time "evolving" spoilers God does create different species of animals, other than humans. And there might even be aquatic life in the ocean underneath the moon's surface that is around the other planet, or just bacteria if nothing else, and Nasa is excited to find out. They also find new planets all the time, I think there are 4 to 19 new planets discovered every day in our Galaxy, and especially close to our solar system, in other solar systems nearby. They have noticed the little black dots that they thought were sun spots, going around other stars in other solar systems, were actually planets, so we are discovering a lot of new things all the time. Our space transmissions / communications are advancing with emerging technologies, look at Nasa's Mars CubeSats 1 and 2, they were able to transmit data from Mars to Earth in 3 minutes, for future "solar system" communication, and I think that technology will mature over time to be faster for wider ranges throughout our solar system. Look at Quantum Teleportation, Australia plans to build a Quantum Internet by 2030 with this emerging technology, to share with Europe, no word on the U.S. The Netherlands plans to expand their cities with their Quantum Internet, and share it with the world in 3 years. Now imagine using that same Quantum Teleportation for small things like Data transmission / communications for space communications. If you are wondering about everything said, you can find everything mentioned in playlists I have on another channel. And if you are curious about emerging technology and beyond, to get a really good idea on what we can do now, very soon "few years or less", or even a little later after that in the 2020's, also check my playlists. ------------------------------------------------ I was giving out helpful links, but it won't allow me to do that now, so I made playlists. 1. Check my channel, find a subscribed channel called Technology Research, go to the playlists there, and click "created playlists", that should show them all. 2. After that, click on the title / text of each playlist, not on the pictures. 3. Don't forget to click the "more" button in each playlist description for more articles and playlists.

@stephenmancuso3314

4 жыл бұрын

This is absurd, “humans exist, therefore aliens exist”? This is logically invalid.

Anybody else love it when there’s an episode where Matt says “Ten to the power of ten to the power of..”? I always know it’s something mind-blowing when that comes up. Ok, PBS Spacetime is very often mind-blowing, but “Ten to the power of ten to the power of..” seems to be a special treat.

@thiesenf

4 жыл бұрын

Tree(3)^Tree(3)^Tree(3),,, where the power tower is Tree(3) high... granted that is a finite number... but it is somewhat big...

@pcuimac

4 жыл бұрын

It's still less then infinite. Which is curious, when you know that our "bubble universe" itself should be infinite in size since the big bang, but still expands. When you end with paradoxes, you know you are wrong and some of your assumptions are incorrect or only a samll part of the picture.

@douche8980

2 жыл бұрын

Power towers are just the stepping stone to higher orders or operations found among knuth arrowed notation.

I love this series but I was admit it is forever over my head. I lack the technical knowledge to grasp these subjects but they fascinate me deeply.

@freedomstonemycology9894

4 жыл бұрын

Yay progress though keep at it!

@BreeingIan

Жыл бұрын

@Michael Lochlann Matt admits he loves physics jargon too much to simplify things for the average person. I think it makes this channel pretty unique, it's definitely not for the faint hearted. Like you said, physics books and conferences do a much better job at simplifying so if that's what you're after those are a great choice!

If bubble universes could potentially have different laws of physics, what laws would describe the bubble universes that form from their collisions?

@Sadix99

3 жыл бұрын

could that multiverse be a bubble universe in an other multiverse ?

@AngIezi

3 жыл бұрын

If there is infinite possibilities there’s a uni where i got a stando and a uni where your theory is true.

@yourfutureself3392

3 жыл бұрын

Also, if bubble universes are generated when spacetime stops expanding in one place, how does a stop in expansion in an area change the laws of physics of that area?

@prakharanand7012

3 жыл бұрын

Yes, the thinking that they r "inflating" Or expanding just like ours, at the same time as having different laws, just doesn't sound right, it could be that they r out of our human understanding? If they have different laws, how can u say that they r inflating?.... There might as well rightfully be no words to describe them.... This is rlly addicting stuff

@Monster33336

3 жыл бұрын

If the laws of physics are so different wouldn't everything be and look different and Incomprehensible? A bubble would suggest it resides in the same space.

“Planets only orbit the sun. Other stars have exoplanets.” Well gee. That’s a really heliocentric definition.

@gregoryfenn1462

4 жыл бұрын

Yeah I hate the term 'exoplanet' too, but that's what we're stuck with for the time being.

@123td1234

4 жыл бұрын

I think it’s just to differentiate between “planets” in our solar system and “planets” (exoplanets) outside of our solar system. It makes sense, but yes it is weird when even though something is technically a planet like Mars or Earth, it isn’t actually called a “planet” because it’s outside of our solar system

@ChessMasterNate

4 жыл бұрын

I agree. Exoplanet should just be a class of planet based on location. A way to specify, what you are talking about. It is like some islanders live on an island that has one kind of snake, but they refuse to call any other kind of snake that exists elsewhere "snake". "Those are not snakes, those are exosnakes". Silly.

@YesPlease964

4 жыл бұрын

@@ChessMasterNate "Exosnakes" oh my god, I can't breathe :D

@ThePurza

4 жыл бұрын

@@ChessMasterNate That example is perfect, it also captures the pettiness of the definition; as though 'our planets' are different just by virtue of being close to us.

Again, my brain is currently melting down while simultaneously expanding at an insane rate!

@davidatkinson7474

4 жыл бұрын

I feel the same...and somewhat intellectually inadequate

Q: How many universes are there? A: All of them.

@Gr3nadgr3gory

4 жыл бұрын

The answer to your question is yes.

@Albeit_Jordan

4 жыл бұрын

@@Gr3nadgr3gory That would've been too obvious.

@RSHastingsIV

4 жыл бұрын

@DigitalDan As many infinite possibilities as your imagination, at least until we figure out a way to observe it and it settles to something relatively more mundane. Keep your mind open for all possibilities, but remember that science follows facts whole fiction follows dreams. It's always great when they overlap, but important to remember the distinctions between the two. Sounds like we're coming up on the edge of our current knowledge of inflation. Curious what the next major theme will be.

@jimc.goodfellas226

4 жыл бұрын

All of them...ALL of the universes

@David-qv9yy

4 жыл бұрын

the many worlds theory has flaws there is a video that very constructively debunks not a fan of the MWT but I am a fan of time travel not our bodies but our conscienceness kinda like that wolverine movie where information is transported and we know the speed of light may be a constant but there is stuff out there that shits on the speed of light

"Some questions spring to mind ... I mean, except "What?!" made me laugh so hard, I had to rewatch that part a few times

You're literally one of the coolest dudes I've ever seen in my life. Your wealth of knowledge is awe inspiring.

@drainedeyes4268

2 жыл бұрын

And I love your narration lol.

PBS Space Time: "How Many Universes Are There?" Inflation: Yes

@Skylancer727

4 жыл бұрын

"Ancient astronaut theorists say yes."

@jamesbentonticer4706

4 жыл бұрын

Please do not trivialize such important matters. Go on some Chemtrail bull shit page to do that.

@igorastral4816

4 жыл бұрын

Best possible joke for this video!

@jamesbentonticer4706

4 жыл бұрын

Poes Law Haha yes I agree. Contrails are quite real. Though if you notice, I typed Chem, not con-trails. But pretty sure you're joking. If so, good one.

@MrHarychan76

4 жыл бұрын

@@Skylancer727 hahaha...you surely often watch ancient aliens

I spend more time watching videos like these than actually studying

@tomkop213

4 жыл бұрын

You probably learn more here than in school

@playbutton657

4 жыл бұрын

Fedora Eagle I’m from the United States but I’m studying abroad until university. doing my a levels currently

@dillbourne

4 жыл бұрын

@Fedora Eagle my exam grades when I do my homework vs when I don't do my homework beg to differ.

@tomasramirez301

4 жыл бұрын

@Fedora Eagle I don't understand how a comment so irrelevant like this one can get so many likes and comments. The world is really turning into an idiocracy.

@manjsher3094

4 жыл бұрын

The truth is your mathematics is weaker than you wish, therefore you watch to escape the fact that you maybe in the wrong field. Or your just bored with your professors.

Thanks for covering the planet definition issue in detail at the end, and giving air (finally) to the biggest problems with the definition. Great show as always.

I like that Hitchhiker's Guide reference at the beginning

now i am curious as to what two "Universes" colliding might potentially look like. how might it effect physics within the area of overlap?

@omnigeek

4 жыл бұрын

Vacuum Decay maybe?

@valjean76

4 жыл бұрын

Bootes void

@Chareidos

4 жыл бұрын

@@valjean76 The Great Attractor

@mvmlego1212

4 жыл бұрын

I'm guessing that the universe with a lower-energy vacuum state would win out.

@livefree1030

4 жыл бұрын

Assuming the dark energy, and dark matter quantum exponent between both universes is not equal to the quantum exponent of matter, then one universes would cancel the other out in time as space would differ. The Exponential nature between what was found during the findings of the Higgs Boson, a photon could travel between universes and the dark field would cancel out.

The whole time he was talking about seconds, I kept wondering how seconds would be measured on a multi-universal scale.

@b.a.r.c.l.a.y9701

4 жыл бұрын

Jacob Opstad time dilation has this flipped over completely

@gregoryfenn1462

4 жыл бұрын

It's kind of assumed that there is a "time" dimension (that may or may not be linear) that exists as a shared parameter in the calculus between all the universes. The inflaton field, where the bubbles expand inside and collapse randomly in, has it's dynamics, and I suppose that dynamic state can define time for all worlds. (Or you could just define time as the number of universes currently existing! Since the spawn rate is faster than our plank-scale theoretical limits of measurement, that would be more than good enough as a multi-universal clock.)

@dennisdejong6540

4 жыл бұрын

There would be time if these bubble universes are created in another bubble universe that is already expanding so quick that these universes can start popping up. And eventually more universes might pop in in these new universes when they olso expanded enought .

@Bishka100

4 жыл бұрын

I like seconds coz I like pudding and you can never have enough pudding.

I absolutely adore this channel, I'm often amazed by the content. However, this particular video blew my mind.

Can you use tetration instead of exponentiation in order to keep track of the number of bubble universes in the multiverse, as a function of time? I haven't yet seen a practical application for tetration, but if there is one then this surely must be it.

@douche8980

2 жыл бұрын

You would likely need several more degrees of higher math functions than that to keep track of all potential universes out there.

When I was in college we had this term that the professors would use called theory-territory or therotory. Basically most sciences will expand into their neighboring fields of study. For the softer sciences of human behavior you'd have psychology, sociology, anthropology, and biological behavioralism all trying to explain the same phenomenon within their framework. I feel like planetary scientists are telling astronomers to get off their lawn. I think there's a good chance that they probably have working definitions and classifications for planetary bodies. Kind of like there are classifications for stars. Like what is the difference between an astrophysicist, astronomer, and cosmologist. How much overlap are we talking about and how specialized do they get. Back to anthropology an archaeologist and a linguist can both be anthropologist. Maybe SpaceTime could do a theory-territory episode explaining all the branches of physics and an astronomy.

@Bitchslapper316

4 жыл бұрын

It would be an interesting episode.

@CharmedPop

4 жыл бұрын

I like this idea for a video!

@korakys

4 жыл бұрын

Perhaps, but there is a channel that is already specialised in this: kzread.infovideos

@freedomstonemycology9894

4 жыл бұрын

LoL softer

These videos used to go way over my head but now I can at least hear the wooshing sound they make.

@Jesse__H

4 жыл бұрын

p r o g r e s s .

@Games_and_Music

4 жыл бұрын

Keep looking up and it will be looking up

@TheFrasseF

4 жыл бұрын

Hear hear!

@funkyflames7430

4 жыл бұрын

Jerry Rupprecht They probably got slower

I've been fascinated by this inflaton field and watching the last few Alan Guth episodes over and over. I also tried watching some of Guths lectures but this feels like it hits the homerun better in explaining what Guth is really talking about. I never knew that vacuum space had such high POWA!

I'm so glad that this guy is telling everybody what I have been thinking for twenty or more years...

This is a fine discussion, especially the perspective on Fermi's Paradox, but the most important thing I took from this was, we really need to talk about where I can get that t-shirt.

I was doing fine. Then the numbers came. My god. The numbers. They're everywhere, especially over my head.

@SanJose408Alex

4 жыл бұрын

The numbers Mason, what do they mean?!

@faarsight

4 жыл бұрын

Man those over your head numbers are the worst

How many ways do you want to experience yourself ? Universal consciousness: *Yes*

@LalkeBanditen

4 жыл бұрын

@Greg Jacques Lucifer's Jizz Gargler In one where the Nazis won, and order is restored

@FastEasyLifeTips

4 жыл бұрын

I cut my finger chopping vegetables.

@jeffreysaker9528

4 жыл бұрын

A hasty healing to your wound, my friend!

@FastEasyLifeTips

4 жыл бұрын

@@jeffreysaker9528 Thanks mate, it seemed to magically disappear

@jeffreysaker9528

4 жыл бұрын

Look at you my dude, first person to see another’s prayers come to fruition!

So, bit late to the party, but this video has me asking a question: If bubble universes can meet (even if they have to start off absurdly close together to do so), wouldn't that allow for the creation of expanding regions entirely contained or "trapped" between a network of connected universes? In a simplified 2d version of this, you could imagine 4 universes, in a square pattern, so that the edges of all 4 bubbles meet shortly after the pop into existence. But if you timed it just right, and set them just the right amount away, there would still be a region of exponential inflation right in the middle of it. I have no idea what the implications of this would be, but it seems hard to imagine.

@oberonpanopticon

9 ай бұрын

Perhaps such a structure would rapidly end up as something like a shockwave as the space inside expands, inflating the surrounding universes like the skin of a balloon?

The "Youngness Paradox" seems pretty transparent to me. Although it's true that the majority of sentient life would be in other bubble universes that should in no way interfere with the probability of a 2nd or 3rd sentient forming within the same bubble universe or even down to the scale of a single galaxy.

@Gunandrunandgun

4 жыл бұрын

I think you're right. Couldn't you use this premise to argue just about anything that happens should statistically be happening for the first time? I mean, the number of universes in which someone is drinking tea for the very first time is almost infinitely larger than the number of universes in which tea drinking has been happening for thousands of years. Imagine how many new universes must have formed in that time! But here I am drinking tea, thousands of years after its invention.

@RanDStClair

4 жыл бұрын

I agree.

@FlekkefjordStation

4 жыл бұрын

That isn't really what the Paradox says. It's talking about the probability of us being in a newer bubble universe compared to an older one. I'll try to rephrase it a bit: There's always more first sentient races than second sentient races at any point of time in the 'multiverse', because there's always more new universes than old ones. Because of that it's simple probability that we're one of the first ones. The chance of a universe developing more sentient races afterwards has no bearing on the paradox.

@Thessalin

4 жыл бұрын

It's also a thing on our galactic scale. Terrestrial planets and the heavy elements to make us are actually relatively new. Thus, wouldn't it be crazy if we were the first. Boy howdy we need to survive to help the others not be like us.

@infinitemonkey917

4 жыл бұрын

@@FlekkefjordStation Aren't low probability odds attained all the time ? Somebody has to win the lottery.

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

@TheTwick

4 жыл бұрын

I love Douglas Adams. Just ‘heard’ HHGTTG in audio book.

@DavidBeaumont

4 жыл бұрын

@@TheTwick See if you can track down the original radio series, that's the original version.

@hereticpariah6_66

4 жыл бұрын

If _only_ I could have been the 42nd upthumb.....

@jukeseyable

4 жыл бұрын

Well best you don't panic ! Just put a fish in your ear

@hereticpariah6_66

4 жыл бұрын

@@DavidBeaumont BBC series is damn funny, too...

So as far as aliens go, it's basically: "Thank you Mario. But our princess is in another universe."

Perhaps it is oscillating and we are in a period of positive expansion, and the harmonic depends on the size of the universe.

My mind wasn’t ready for this on a Monday afternoon 🤯

Wow, that was quite a workout. I think I can feel the burn of my brain consuming calories. It'll be sore tomorrow.

@gstylez0107

4 жыл бұрын

D.o.b.s. Delayed onset brain soreness.. Wait two days before you watch another one or you'll risk over training..

When ever I think I've got a grasp on a subject I like to watch your videos to humble myself. :P

the idea that we are the first intelligent life in the universe, because the amount of universes created each second is more than the last, and so the vast majority of intelligent life is the first, is ... phew. it shakes me.

@-Kal-

2 жыл бұрын

That same logic seems to make a pretty solid argument against that infamous simulation hypothesis too.

As long as vacuum energy is enough to suck up the dust bunnies under my couch, I'm happy.

Omg when he started talking about 10 the power over and over I started to smell copper now my head hurts 🤢

@tonysolar284

4 жыл бұрын

Your iron is low. When your body has low iron, you'll get that metal taste in your mouth.

@charleslescoe6617

4 жыл бұрын

Tony Solar LoL I was making a joke about how confusing that part started to get

@NefariousKoel

4 жыл бұрын

Blood tastes coppery. Perhaps he bit his tongue? Or residual memories of past cannibalism were stoked.

Thanks for making me feel even smaller than I did when there was just 1 universe.

Excellent video. Very very interesting. Congrats.

Hi, thank you for a most interesting segment. I understood EVERYTHING you said up until you said "welcome to PBS Space Time ...."

Fry: So there are an infinite number of universes? Professor Farnsworth: No no, just the two.

@Vasharan

4 жыл бұрын

Those were the only two within 10^-50m of each other, so were the only two to merge within Fry's universe.

@LORDTHUNDERX

4 жыл бұрын

Yet they had an episode with Multiple Universes in boxes

@MarioXcore1

4 жыл бұрын

@@LORDTHUNDERX that's cuz it was only the two that you could visit like that

@user-DongJ

4 жыл бұрын

All these sounds nice but isn't multi-verse theories/ideas highly speculative concepts that borders on being like religion, fengshui, astrology &/or science fantasy?

@scottmcintosh4397

4 жыл бұрын

@@user-DongJ Or the Democrats' pie-in-the-sky "New Deal" for a kinder, gentler world.

This is so outrageous. I love it!

I hate it when universes collide. It makes my hair look bad.

@areality40

3 жыл бұрын

Then stop the universes from colliding! Pretty simple...

Too sober for this

Fermi paradox is about aliens in our own universe, not across the multiverse. What am I missing here?

@timo4258

4 жыл бұрын

You are not missing anything, he is talking about fermi paradox exactly in our own universe.

After listening to Kip Thorne explain how there’s no matter whatsoever in a black hole, I really needed my mind completely blown again, and voila! Good stuff!

@haroldfloyd5518

2 жыл бұрын

@dan parker many worlds theory says indeed there are many exact or nearly exact replicas of you in the multiverse.

14:07 Need more of that existential awe on the wonder And weirdness of the universe? Got burning questions on the nature of reality?

Me: I need to shut off my brain and relax for a bit PBS Spacetime: How many universes are there?

The multiverse it never ends It just goes on and on my friend Some universes Started popping up not knowing what it was And now they'll keep on popping up forever just because!

@eaboatnuts76

4 жыл бұрын

Throughout the multiverse, 'bout anything could be true Might as well make up anything to believe in It's made inside of you

@Bassotronics

4 жыл бұрын

@ danwic It’s a Lambchop Universe

Excellent video. Congratulations.

I don't know how but theses videos started making sense to me.

Listening to Valasse Eruva's album Ascending Phoenix and thinking about multiple universes is an ideal combo

That look on his face when he says "aliens" in the intro 😂

@mykulpierce

4 жыл бұрын

"well it gets clicks sigh"

@Quantum_GirlE

4 жыл бұрын

Zsolt Donca OMG, I noticed that too. Almost evil or excited? Hos facial expressions are always very animated. Them eyebrows tho! ;) Wondering too, if he frequents the discord and how many are members now. It's all interesting :)

Haha I love the HHGttG references. Don’t forget your towel when traveling the multiverse!

There is a great idea! For the dark side of the Universe - suppose that it consists of short-term interactions in long-lived fractal networks, the smallest quantum operators - Spherical «rosebuds», consisting of a large set; 1 - rolled into a sphere, 2 - half rolled into a sphere and 3 - flat, vibrating quantum membranes relative to their working centers in the sphere.

After taking a deep look into strings theorie i thing there are approximately 7 universes in existence

@Dan-cm2ux

4 жыл бұрын

Nice

@zorgius

4 жыл бұрын

nice

@albertigno1129

4 жыл бұрын

The other 5 were destroyed by Zeno-Sama

Twenty seconds into the video and I'm already hyped af

I have conflicted feelings about the Youngness Paradox. On the one hand, I like it because I have been arguing for years now that the reason we don't see anyone else out there is that we're first (because someone has to be). On the other hand, it sounds suspiciously like the Doomsday Argument which I dislike but I don't know my way around statistics enough to properly articulate my intuition that it's a load of baloney.

@davidhand9721

3 жыл бұрын

I have the same problem with it. There is no reason to suspect that the rate of civilization generation in a single universe is dependent on the number of universes in total. It's not exactly like the doomsday argument, but it does have that same ab initio feel. What makes you think we are the first and only life? Or the first and only civilization? I am more of a late filter, doomsday tech guy. The doomsday tech is obviously Facebook.

@internet_introvert

3 жыл бұрын

The Great Filter gets them all in the end

@RandallStephens397

3 жыл бұрын

@@davidhand9721 Given the conspicuous lack of evidence of any [interstellar] other civilizations out there, and given that the current age of the universe is about as young as it could be to give rise to concentrations of heavier elements (Fe in particular), I think it is not only reasonable to assume we're first (or at least, not significantly further behind in technological development than anyone else currently out there), but imperative that we act and plan as if we are [on the verge of being] first because if there are stakes to be claimed in the galaxy, it's important we plant those flags before everyone else beats us to them and we're stuck being the Alabama of the galaxy with only a single yellow dwarf to our name.

@A1Authority

3 жыл бұрын

I have conflicted feelings about two-tiered comments. - On one hand it's a great way to join a band wagon. On the other hand, it's just a great way of feigning some sort of creativity you don't possess, at least not enough to do it without a huge blank waste of space that really means "prepare to have your mind blown... but not really"... and, also, "I don't know what a colon is for, like educated people".

Good episode. Thanks! Also, I dig the new outro.

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

In an endless reality, all possibilities for life would be realized, so even after everything we can see evaporates into radiation, life will carry on elsewhere. It is comforting to think that perhaps, in some distant but similar universe, I am having tea with you.

@cripplingautism5785

4 жыл бұрын

it's also a rather hellish prospect as it means infinite, eternal suffering. if you deal with mental illness or chronic pain you don't want it to go on forever with no way out.

@mvmlego1212

4 жыл бұрын

I don't think personal identity carries across parallel universes. I appreciate the sentiment, though.

@elindis

4 жыл бұрын

@@mvmlego1212 Well, perhaps not. Still, the DNA of every living thing would end up randomly duplicated at some point, so it's nice to think that life itself is neverending.

@greatness2421

4 жыл бұрын

How Tsundere of you

@Monster33336

4 жыл бұрын

If using the current limited laws of physics, it may be a very big number but events can only replicated so many times.

The question is, What happens when they collide? I understand the theory that universes infinitely create in space time, but it sounds as if there’s constant collisions between universes. What happens when that occurs, other than the creation of new universes, because in our own universe, just for a reference. When black holes collide there’s an incredible amount of energy released. So, in space time, the collision of universes simply leads to a never ending creation of further universes? I feel there could be more, and the video briefly touched on it when they talk about dark energy

My second take on my problem with the Fermi Paradox explanation: One of the ideas, that is often formulated together with the anthropic principle is the idea, that we are a totally normal, average species, and everything about us is totally normal, typical and average. So, our universe was about 13.8 billion years old, when humanity first appeared, and we therefor assume, that it takes an average universe about 13.8 billion years to produce its first technological civilization. The Fermi Paradox problem is, that according to all we know so far, and assuming, we are the first technological civilization ever, we don't really understand, WHY it took the universe so long to produce us. The circumstances, that we deem necessary for our existence should have occurred multiple times before, even in the time cone of our observable universe. So, the multiverse theory by far can't solve the Fermi Paradox, at best it shifts the question from: "Why did it take the universe 14 billion years to produce us?" to "Why does a given random universe on average need 14 billion years to produce its first technological civilization?"

If the universes do collide/join, don’t they have to follow the same laws of Physics? Not sure, but something about gauge theory. And what type of spacetime is in between the bubble universes?

@Cherryfish386

4 жыл бұрын

There is probably just normal space time in between the bubble universes

@billthepay5990

4 жыл бұрын

I would have bet for no spacetime at all if someone is a property of a bubble universe

@ozzymandius666

4 жыл бұрын

There is no principle which states that bubbles that do collide must have exactly the same laws of physics (things like coupling constants). Assuming that the dimensionality of each bubble is the same (3 space, 1 time), then I would guess that what is called a domain wall would form between them, and it would move further into the bubble with the lower value of the inflaton field with a speed proportional to the ratio of the values of the respective inflaton fields of each bubble. The domain wall is 2 dimensional, so there would be nothing between each bubble except for the domain wall. Passing through the domain wall would likely be fatal to ab life doing it from either side of the bubble, and would likely drastically change the structure of any energy to pass through it.

@urinater

4 жыл бұрын

New evidence supports the idea that we live in an area of the universe that is “just right” for our existence. The controversial finding comes from an observation that one of the constants of nature appears to be different in different parts of the cosmos. If correct, this result stands against Einstein’s equivalence principle, which states that the laws of physics are the same everywhere. “This finding was a real surprise to everyone,” says John Webb of the University of New South Wales in Sydney, Australia. Webb is lead author on the new paper, which has been submitted to Physical Review Letters. Even more surprising is the fact that the change in the constant appears to have an orientation, creating a “preferred direction”, or axis, across the cosmos. That idea was dismissed more than 100 years ago with the creation of Einstein’s special theory of relativity. Read more: www.newscientist.com/article/dn19429-laws-of-physics-may-change-across-the-universe/#ixzz616H9gCH0

@ozzymandius666

4 жыл бұрын

@@urinater That "New evidence" is almost 10 years old, and no-where near the 6-sigma needed to be considered "evidence" among scientists. "But, he adds, extraordinary claims require extraordinary evidence: “That’s way beyond what we have here.” He says the statistical significance of the new observations is too small to prove that alpha is changing. "New Scientist" is a rag.

Max Tegmark's "Our Mathematical Universe" is a great book covering all of these topics in a lot more depth while still being pretty approachable.

@captainpugwash4100

4 жыл бұрын

Bogdan Vera An excellent read, and I may have understood half of it. But after finishing it, I came up with two answers, either one or an infinite number as there is simply no logical reason for a finite number of universes.

@zverh

4 жыл бұрын

Tegmark is a mad platonist

@yojiviriak675

4 жыл бұрын

@@zverh what's Platonist?

@zverh

4 жыл бұрын

@@yojiviriak675 Someone who adheres to the philosophical position called *platonism.*

@zverh

4 жыл бұрын

@DigitalDan I am myself skeptical of any position that claims absolute truth. But being skeptical about maths/logic is not easy.

One possibility which would make a difference to the physics is that any given bubble exists completely in isolation to others: its 'space' cannot collide with that of any other. Also we cannot lay out these bubble universes in the topography of some 'meta-space' since they absolutely cannot share coordinates: Universe A is not any given distance from Universe B. Each exists only within itself.

Where’s the link to that wee bit of calc required to find out how close the universes have to be to collide I’m very interested in how to do that

2:21 That's exactly what I thought while watching the first episode in this mini-series!

@salvadorsarpi9634

4 жыл бұрын

1:21 choo choo

...besides "WHAT?!?!" - Matt O'Dowd LMFAO - couldn't agree more.

I have no clue what your talking about in most of these videos...but I like it!

I never understand what this man says half the time but that always makes me more curious and always watch more to understand better

Actually for me the solution of the Fermi paradox in our own universe is a lot easier. Let's suppose that every coefficient of the Drake equation is really low but not zero. So, a planet in the habitable zone with microbial life: rare, but not that much. A planet with multicellular complex life? Orders of magnitude less common. A planet with intelligent life? Even less common than the latter. We end up with a probability declining exponentially every time we add a condition to the equation (intelligent life, intelligent life + civilizations, intelligent life + civilizations + technology capable of interstellar travel). In the end, if we factor in the probability of 2 already extremely improbable civilizations capable of interstellar travel coexisting at the same time in a billion years old galaxy, it seems reasonable we haven't yet encountered aliens

@francescoghizzo

4 жыл бұрын

If you think about it, alien explorers could have visited us in the Cambrian, collected some samples and just moved on and we wouldn't even know

@jvcscasio

4 жыл бұрын

I believe the timing is also important. It doesn't matter if 1 million years ago there was an alien civilization sending messages to the 100light-years-away sun. We wont detect them if they went extinct within 1 million years, and a civilization of a million years is a lot!

@francescoghizzo

4 жыл бұрын

@@jvcscasio exactly, we have to consider distances between advanced civilizations in a 4D spacetime which could potentially span millions or even billions of years in time and millions or even billions of light years in space

They reserved word "planet" for bodies in our solar system? The future human galactic civilization will certainly come to think this was a totally smart decision

@Mystixor

4 жыл бұрын

Haha, when he began with "sun" in the definition I thought "No, they could not have made *that* mistake" but this way it is even worse :D

@kyjo72682

4 жыл бұрын

Isn't it weird? :) Planet seems like a generic category not a specific case for our solar system. Exoplanet is just a subcategory.

@udzielafamily9813

4 жыл бұрын

wrong video

@karthikkrishna5870

4 жыл бұрын

aurell we maybe considered the Mayan calendar .

@NimbleBard48

4 жыл бұрын

The definition will change eventually when we get to that point in our history.

Very interesting! definitely need to see the other videos about cosmic inflation!

What's fun about this is that we're basically still grappling with the implications of Einstein's theories.

@douche8980

2 жыл бұрын

He was in the top 10 smartest people .....ever

I just watched dragonball super and i dont want to spoil the amount of universes😅

@WackadoodleMalarkey

4 жыл бұрын

Makes you wonder where will Goku next have to go for a worthy challenge?

@mvmlego1212

4 жыл бұрын

Over nine-thousand?

Any other KZread video: reading comments while following along with the vid playing... PBS space time video: reading comments....erm... wait whaaaat? Rewind.....lol ^_^

@jimc.goodfellas226

4 жыл бұрын

Yes so true

I feel that a quote from Billy Madison would be appropriate here.

Love the new close! Way to go, Kornhaber Brown!

I kid you not the past 3-4 days I've been researching the multiverse theory myself and there is no limit to my delightment when I see PBS make a video on it!

This video has more hypothesis than there are atoms in the observable universe.

This video made so much sense and answered so many questions i had. The reason collisions are likely rare is that the space between the bubbles is expanding faster than the bubbles themselves. Kind of like us not being able to reach distant galaxies. I just won't to know if there's particles between the bubbles? Or it's just a quantum field?

Six! ok 4:41 that ~ approx part made me spit my tea out

never been lost so early when watching pbs spacetime series T_T

@drawmaster77

4 жыл бұрын

I wouldn't worry too much dude, I doubt any of these theories are remotely true.

@mgilangr9883

4 жыл бұрын

@@ChantelStays yep, same here

@mgilangr9883

4 жыл бұрын

@@drawmaster77 it's, at least in its current progress is untestable (this is what i got so far from watching this vid), hence it's more like philosophy or tought exercise, although it's backed by mathematics

@lancetschirhart7676

4 жыл бұрын

Then there are plenty that you haven't seen.

@drawmaster77

4 жыл бұрын

@@mgilangr9883 that's not really true. They come up with crazy theory first, then write some equations around the "what if's". If their theory is false, and it absolutely is, then all these equations are meaningless. Think of it like writing a sci-fi novel about space exploration and calculating how fast the interstellar spaceships are flying. If you come up with a number through some calculations, it doesn't make it any less of a fact that interstellar spaceships are science fiction. The entire string theory is nothing more but a really long sci-fi novel.

Lol I was just watching the previous PBS videos about bubble universe when I got this notification

this is a strong stuff ... best physic channel ever

There are so many good theories out there.

I love how the Titles of these videos have questions, No one can answer.

@Sentient.A.I.

4 жыл бұрын

What you dont know how many universes there are? Obviously its ∞-x+¥/time since the beginning of time. All you have to do is fill in those incalculable variables and you have the answer of course until the next second passes and 11 to the 78th quadrillion universe's pop up and you have to add those in.

@oracleofdelphi4533

4 жыл бұрын

@@Sentient.A.I. which simplifies to 42.

@drunkenramble4120

4 жыл бұрын

@@Sentient.A.I. Thanx, lol

@jovetj

4 жыл бұрын

Answer: Just the one. I am now not a no one! I'm a somebody!

@jovetj

4 жыл бұрын

*@F* You took me waaaay too seriously.

2:21 Is exactly how I feel with every single one of these videos.

@jacobstromburg5803

4 жыл бұрын

That's the purpose of this channel, to confuse you, not to inform you.

This episode blows my mind.

Had to watch a few times, but epic.

"Space is big, really big. You just don't believe how vastly, hugely, mind bogglingly big it is. I mean, you may think its a long way down the road to the chemist's, but that's just peanuts to Space, listen" and so on.

@Merennulli

4 жыл бұрын

Eventually, the style settles down and tells you things you really need to know, like how many universes there are.

so has earth cleared it's orbit even tho tons of dust hits our atmosphere and falls to earth every day? To me this is where the current definition falls flat on it's face and is just not clear enough

Regarding the Pluto debate addressed at the end: there's a third distinct problem with the IAU definition, which is one of inconsistency - namely, in the proclamation that "planet" and "dwarf planet" are to be treated as mutually exclusive. In no other astronomical case is *dwarf X* not a subset of *X* - dwarf stars are still stars, dwarf galaxies are still galaxies.

How do variances in the flow of time, factor into all of this? As in, the flow of time in and around all the bubbles.