Flat earthers after watching this video: the universe is *round*

@Sinnbad21

5 жыл бұрын

Lucas Meneses lmao

@KingNedya

5 жыл бұрын

Well I mean technically, don't they have that space dome thing?

@peregrine6741

5 жыл бұрын

lol. Too true.

@pblpbl3122

5 жыл бұрын

Bold of you to assume flat earthers would watch this video

@KingNedya

5 жыл бұрын

@@pblpbl3122 You never know.

But if the universe is expanding, doesn't that mean that the density of atoms in a given space decreases? Will the universe one day be much more concave than it is today?

@theginginator1488

7 жыл бұрын

Dalriad that's a good question. Let's get this up there so Henry can see

@hammad8707

7 жыл бұрын

yea thats a very good question

@boltblast3262

7 жыл бұрын

+

@SteveWhisenhant

7 жыл бұрын

Exact same question came to me. #FollowupVid

@rDnhey

7 жыл бұрын

Dalriad This is what happens when u try to explain something complicated without math in 3 minutes video.

This video is so wrong, the correct term for negative curvature is "pringle"

@larho9031

5 жыл бұрын

Mmm. Pringles.

@danielrynne9300

5 жыл бұрын

This makes me want to eat a black hole

@ardinchesters128

5 жыл бұрын

Finally, someone who gets it.

@xakkep9000

5 жыл бұрын

You're God damn right! :D

@shreyanshknayak

5 жыл бұрын

He may have used some different terms to make more sense and to not entangle things up...

*Perfectly balanced. As all things should be*

@ilayws4448

4 жыл бұрын

Perfectly balanced +- 0.004. So not really perfectly.

@WaterYaDune

4 жыл бұрын

Reddit moment Edit: Thanks for the gold kind stranger!

@user_hat

4 жыл бұрын

*Are

@agentbacojones5082

4 жыл бұрын

Thats assumimg everything is finite

@livesh684

4 жыл бұрын

thats why thanos is never wrong

Great, now we have to worry about flat spacers.

@paskky913

6 жыл бұрын

azdgariarada lol

@bobfortewsevin4711

6 жыл бұрын

Wouldn't that be round spacers?

@SuperNuclearBoss

6 жыл бұрын

azdgariarada I am a potato spacer

@sekarwangi2086

6 жыл бұрын

SuperNuclearBoss 1337 Count me in

@dylanfiore3718

6 жыл бұрын

not planet flat as you would think, but space is flat, not the objects. But ha! And Columbus made my birth possible, so I owe it to a murderer

HA TAKE THAT ROUND SPACERS - Flat Spacers

@Name-ul8es

7 жыл бұрын

-science discussions in future... :d

@ronshvartsman7630

7 жыл бұрын

Incredibly underrated comment. Hats off to you, sir!

@zadraking

7 жыл бұрын

Julius Javellana Duuuuude, you're so on to something NASA lies. Jay slash Kay

@justronjay9226

7 жыл бұрын

Or just have a lot of screenshot material.

@justronjay9226

7 жыл бұрын

Wait a minute, are you talking about AtomZadra?

1:01 can you see grey dots on intersection of line.....Illusion....

@ZzSlumberzZ

4 жыл бұрын

Holy sheet

@thisisarjunbutwhythehellar6188

4 жыл бұрын

omg yes!

@that_one_guy934

4 жыл бұрын

ILLUSION 100

@jianmao9593

4 жыл бұрын

Yup

@federicobinaghi8118

4 жыл бұрын

Justin Y clone

What if the universe is so big that we cannot detect the curvature

@obi-wankenobi5411

5 жыл бұрын

Yes. That's exactly what I think.

@ImAkashRaj13

5 жыл бұрын

I guess that's why the calculations were done from data obtained just after the big bang. The universe had just started expanding at that point of time.

@thespikestorm

5 жыл бұрын

That’s ... not how it works

@callumscott953

4 жыл бұрын

Akash Raj - Yeah, it doesn't work like that at all, all matter from the big bang remains within our cosmic horizon or has past over our cosmic horizon over time. We say that all matter was concentrated to a single point only because we have calculated that BACKWARDS from space we observe today. There is no reason to believe space was not larger than a point at the moment of the big bang and that the big bang occurred everywhere with the space simply forever beyond our cosmic horizon.

@ugandanknuckle505

4 жыл бұрын

@@callumscott953 Cant we see `just` after the big bang by looking 13.8 billion lightyears away? That's how we know about the cosmic background radiation and using trianulatiom we figured out the univers is flat (as stated in the video)

Real universes have curves!

@nickvangorp2915

6 жыл бұрын

Roboblade604 Yes they’re thicc

@someweeb633

6 жыл бұрын

But i think space is circle because if you look all the stars and planets are round. Even galaxies are round

@nati0598

6 жыл бұрын

Galaxies and planets are round, because gravity, shape of the universe has nothing to do with it... It's like saying that your house is made out of bricks, so your entire house is shaped like a brick. (Sometimes it's true, but you get the point)

@maggiekraft3199

6 жыл бұрын

are you implying this universe is fake

@bunderbah

6 жыл бұрын

he is implying we are in a simulation.

ok, just to avoid the confusion, flatness of space does NOT mean the space is like a 2 dimensional plane... the idea of flatness comes from the fact that we are measuring the angles of a triangle on the EDGE of the observable universe. In other words, all it says is that the triangle we are measuring is flat! Hence, all we can conclude is that universe is immensely huge (loosely speaking, sth like a sphere with infinite radius)! basically another confirmation that our universe is almost limitless... so please avoid using the term flatness over here. Instead, the more accurate thing to say is that the EDGE of observable universe is flat.

@MrCarGuy

6 жыл бұрын

Reza Madankan Exactly.

@breakerdawn8429

6 жыл бұрын

Reza Madankan can you explain more because i can't understand

@avypath

6 жыл бұрын

Reza Madankan which doesn't really mean anything, since the universe doesn't necessarily end at the edge of our observation. Who's to say we won't start getting light from far more matter out there, or even far less than we were expecting?

@ahitler5592

6 жыл бұрын

Flat means 2 D and anything with thickness or depth is not flat you stupid fucks. If you doubt me look up the word flat in a official Webster’s dictionary. You stupid fucks are like the uneducated people in the dark ages who thought the earth was flat. In 700 years people will laugh at stupid mother fuckers who thought the universe was flat. DO YOU UNDERSTAND YOU GOD DAM NEANDERTHAL?????

@xuanbachlai5371

6 жыл бұрын

but what is a triangle? how do we know it's a triangle?

When even the universe is able to do cartwheel but you youre still unable to

@sashimiroll5055

4 жыл бұрын

At least you haven’t give yourself whiplash trying to do one. There’s no coming back when even a doctor in the ER has laughed at how you got hurt haha

@JAGuy

4 жыл бұрын

I just want this to be seen cause I know no 1 will see my actual comment in a like a year Have u seen those videos when they put a bowling bowl on a round sheet and smaller round objects if space is flat u cannot go under anything other rise u would go under space itself unless we think of it as a graph with 3d objects instead of 2d shapes the 3d objects can look as far as I want them to look

@mr.whoosh7582

4 жыл бұрын

Wow u so stupid. The universe can’t cartwheel. Smh...

but when the space is curved, wouldn't our measure tools also curved to a same degree so that we can't tell?

@joshuareich580

5 жыл бұрын

Yunpeng Liu That’s an interesting question. I think the answer may be no. If you consider the tools which we have on earth, which is a curved surface where we exist and seems like a reasonably analogous to living in a curved universe, then you can see that the tools which we have are able to measure the curvature of the earth. If you want a way that you can test that at home, take a globe and choose any three points on the globe. If you draw the shortest line between each of the points and create a triangle, then you can use a protractor and measure the internal angles and sum them in the same way shown in the video. While an impractical method for us to use on the earth, it should still scale if you get creative.

@suwuliu5232

5 жыл бұрын

@@joshuareich580 Yes and you are right, but only in limited cases, which in your example is measuring 2D using 3D tool. Imagine you only have a perfectly flat protractor with mathematically 0 meter thickness and it only dwells on our earth surface which also has height of perfect 0. Then you can only have a "curved tool" as so to speak since the hosting space is curved. Would you know that the three angles together are more than 180 degrees? I guess not, because a 46 degree in 3D matches 46 degree angle perfectly in 2D but your tool reads 45 degree. Our world is exactly in that situation. We are using 3D to measure 3D, but we can only see the curvature when we jump to 4D. Hope I articulated well.

@ANGRYpooCHUCKER

5 жыл бұрын

@@suwuliu5232 The way we measure curvature is by looking up into the sky, at the Cosmic Microwave Background radiation. In other words, we measure how the universe was in the PAST. Thus, we know that any possible limitation of measuring curvature due to being "in" the curvature will not affect our ability to calculate whether or not the space we live in is curved.

@Aetheraev

4 жыл бұрын

@@suwuliu5232 It is perhaps hard to visualise but we can in fact measure curvature without worrying about our tools being too curved. The usual way to explain this is using geodesics and triangles but it is hard to see why this avoids the problem you describe. We can solve this by thinking a little more mathematically though. The Gaussian curvature of a surface is intrinsic meaning it depends only on the surface itself and not on any larger space we embed the surface into. Similarly for any "pseudo-Riemannian" manifold (such as space-time) we can define an appropriate idea of curvature that depends on the "pseudo-Riemannian" metric. Put simply, this metric is how we measure angles on the manifold and it is a infinitesimal tool (that is, it acts on the tangent space, which is flat). TL;DR: We measure angles on a flat space tangent to the manifold and so the tools don't have to be curved.

@pranit_33xa91

4 жыл бұрын

Holy SHIT !!! NASA should Phone you

But as the universe is expanding, this density should change constantly, right ? so a few billion years ago, it was not flat - because the density of the universe was higher - and a few billion years later, it won't be flat anymore ? If this is the case, it's strange that I've never heard this reasoning before.

@geniusmp2001

6 жыл бұрын

It's not really the matter density that's relevant; it's just easier to understand, given that we're made of matter. What's relevant is the energy density, which includes matter, radiation, dark matter, and dark energy. And as the universe has expanded, it has come to be dominated by dark energy. That's kept the energy density constant.

@greenfullness

6 жыл бұрын

The universe expands with the matter, which is part of the universe, so the density is the same

@anthonymonterrosa4383

6 жыл бұрын

I don't think that's what is being portrayed in the video. I think the video's definition of expansion is extension, as in the dimensions of space are growing. This is in contrast to a stretch, where the matter inside space would also "expand", but I don't think this is what was meant in the video.

@-Offstar

6 жыл бұрын

It's not the density that decides the curvature. What was used in this video with 4, 5, or 6 atoms was an example. Basically what it is is if there was 20% more or less matter in the universe the curvature would be different. Honestly using the example they did just causes confusion.

@lionbryce10101

6 жыл бұрын

Offstar1029 didn't he give a density though? 4 5 or 6 atoms per cubic meter

*Space is just boneless*

@X_rnas

6 жыл бұрын

Can i have uhhhhhh *boneless* space and uhhhh two liter of time? Said the universe to god

@YitzharVered

6 жыл бұрын

Joel The Process Embiid *S P A C E I S J U S T B O N E L E S S S P A G H E T I*

@theMcWOPPER

6 жыл бұрын

Joel The Process Embiid *Boundless

@blank8479

6 жыл бұрын

It's just a stupid meme he meant to say that

@robohat4837

6 жыл бұрын

Space is just boneless matter

But if space is expanding wouldn't that mean that density would be declining as the volume increases and mass stays the same?

@ireallylikeclouds989

5 жыл бұрын

*more hydrogens made* Space: Suck it Matt

@educn6830

5 жыл бұрын

Some one can please answer

@educn6830

5 жыл бұрын

@@ireallylikeclouds989 you are sayng that hydrogen are created with space?

@MattFyrm

5 жыл бұрын

@@educn6830 no that would defy the law of energy/mass conservation

@educn6830

5 жыл бұрын

@@MattFyrm thank you

"Cosmic hyper-potato." The best space name ever!

So he's not saying that space is flat as in 2D. He's saying it's flat as in it has no curves, still 3D but no curves

@TheTaXoro

7 жыл бұрын

Doesn't have to be 3D, there could be more spacial dimensions out there that we just cannot even fathom, but regardless of the amount of dimensions, yes, flat as in no curves.

@unfiltered577

7 жыл бұрын

Chicken Of the Cave I thought matters interference with space created 3D

@BigattckFirecat

6 жыл бұрын

no this video says its flat like the earth but in reality a better explanation would be: Space = game water physics

@leomyths5265

6 жыл бұрын

Niels Rasmussen He's talking about curves with respect to the path of an undisrupted object. It would actually be counter intuitive to think that an object could essentially accelerate without an external force being applied to it, so we are essentially taught this principle from a very early stage in physics studies. The implications of space curvature are very interesting though. Imagine if you could permanently change an attribute of a finite region space so that the trajectory of objects passing through it is always predetermined.

@siggyincr7447

6 жыл бұрын

It's flat on average, but local curves in space time exist everywhere there is gravity.

Flat earthers gonna like this video.

@cameronfitzpatrick2489

6 жыл бұрын

that's what I was thinking xD

@Ashegao

6 жыл бұрын

Yep

@nathanbrawley7256

6 жыл бұрын

shaind god fucking damnit

@bigpoppabotch3523

6 жыл бұрын

Scientists and mathematicians say the geometry of the universe is flat, what are you, a science denier?

C'mon guys just admitted it Space is a *Cat*

Space is the shape of a Klein Bottle no doubt

@Q__22

3 жыл бұрын

Is the clein bottle the 4d shape in your profile pic

@KTFG

3 жыл бұрын

@@Q__22 It is, kzread.info/dash/bejne/fHZ2j5OGldG_mag.html

@yonyonson3102

3 жыл бұрын

You know you're a fuckin nerd when you're hyped to see a klein bottle comment

Space is T H I C C

@mlgesuschrist5518

7 жыл бұрын

No, it's flat sadly :(

@imstupid7614

7 жыл бұрын

With that curvature ;)

@Kaien15

6 жыл бұрын

Nah, it's flat cuz flat is justice

@sugarwater7463

6 жыл бұрын

You're fucking stupid. They just said it was flat. This comment would be funny if it was using double irony which only stretches the joke. I'm so fucking mad

@yaisetan

6 жыл бұрын

Something can be "thick" and "flat" at the same time

1:03 anyone else see the optical illusion?

@fire2fireable

7 жыл бұрын

Daniele Daniele was talking about the dots in the crossections tbh

@CDexie

6 жыл бұрын

The whole video is littered with illusions. You can't draw 3-dimensional objects on a 2d paper

@404User-Not-Found

6 жыл бұрын

I've seen both. :P

@Sam-oz8pn

6 жыл бұрын

The lines are actually slightly curved. Since the screen is pixellated, you can see when the lines move up or down by one pixel.

@LonelyPug

6 жыл бұрын

Me

I have just left my Cosmology class on Shape of space & I was VERY confused. I immediately searched fpr this and I feel enlightened. Thank you for explaining in the best way possible ❤

I love Daniel and Jorge Explain the Universe! Didn’t know I’d catch them here too

I'm just going to remain blissfully ignorant and pretend space is a hyperbolic potato. Neat video though.

@BampNation

7 жыл бұрын

60 Second Success Great Channel keep up the great work!

@martind2520

7 жыл бұрын

If space is potato shaped then it is not hyperbolic. One is positive curvature and the other is negative.

@pleaseenteraname4824

7 жыл бұрын

+Martin D A hyperbolic potato as in a Pringle

@mrdownboy

6 жыл бұрын

They're called books. Try it sometime.

@potato1341

6 жыл бұрын

60 Second Success Am I an unhyperbolic universe then? :D

Wanna know what else is flat? That joke at the end

@Chigger

5 жыл бұрын

SHOOKETH!

@terner1234

5 жыл бұрын

And earth

@terner1234

4 жыл бұрын

@The main cause of warps in all of reality you just turned the frogs gay

@TheLetterJ10

4 жыл бұрын

@@terner1234 *flat earther's brains

@YoBoiHrcky

4 жыл бұрын

And the earth

This explanation was way easier to understand than most. Thank you!

Finally, a video that explains shows the explanation in a way that makes the most sense to me :)

PBS Space Time, Physics Videos by Eugene Khutoryansky and minutephysics on the same day? Hell yeah.

@ZelForShort

7 жыл бұрын

Eugene

@garielmartir9876

6 жыл бұрын

Feynstein 100 Eugene!!! Woop! And PBS is amazing, too. Love them all!

@alexwang982

6 жыл бұрын

Feynstein 100 mathologer too

1:02 "There's only one shape space can be..." Me: A potato!!? Video: "...a giant hyperspace potato." Me: HOLY CRAP I GOT IT RIGHT!!! *Subs*

@glardian966

6 жыл бұрын

But it's NOT a hyperspace potato...... :(

@maslily781

6 жыл бұрын

No one knows how big is space or what shape is space

@skyrocks12

6 жыл бұрын

Pandavap I love your profile pic |-/

@snickeringdragon

6 жыл бұрын

Pandavap A POTATO!

@georgeb.wolffsohn30

6 жыл бұрын

So the milky way could be a french fry ?

3:05 *sarcastic laugh*

Very clear explanation, thank you.

FLAT IS JUSTICE

@Erika-gn1tv

7 жыл бұрын

NON SEQUITUR IS PINEAPPLE

@IImagnumalucardII

7 жыл бұрын

Goddammit Konata, you're like 30 y/o now, get over it already

@elevate07

7 жыл бұрын

Jose Perez In all the other universes Oppai is truth

@BigBoss-sm9xj

6 жыл бұрын

Lolicon is my thing

@BigBoss-sm9xj

6 жыл бұрын

Lel

The Flat Earthers are going to love this video. They may ask how can we have a round earth in flat space? So if space is flat the earth must be too 😳 😂😂😂

@chasesearle556

6 жыл бұрын

Answer: Time is depicted on *CURVATURE, BOI!* in these lines of space’s expanse. SPACE is growing cuz particles are spreading. Since PARTICLES are spherical(perfect or not), the Earth. IS. ROUND. And so’s your head, get over it already!

@nathanbickel3916

6 жыл бұрын

Earth is obviously flat

@OlivierDeSillegue

6 жыл бұрын

Don't flat earthers believe that the earth is also a disk? Wouldn't the same reasoning fallacy apply for a disk as it would for a sphere? :P

@Nerd2Ninja

6 жыл бұрын

I mean the Earth can be flat relitive to a higher dimension right? Nothing like the current flat earth model but *shrug*

@rattttooooo

6 жыл бұрын

I commented the exact same comment thinking "this is pretty funny, i bet no one said this" well i was wrong, so wrong.

Great videos btw. Always. Concise efficient yet charming. 🤘🖖

THIS CHANNEL HAS SO MANY PUNS IN EVERY VIDEO I LOVE IT

I love every second of this video. Beautifully written and described.

That explains Flat Stanley 😏😏😏

You are like Sir Einstein you explain every thing simply . I hope i had a physics teacher like you. Thankyou

Really great looking animations in this video.

Space is my city

@aidanm6916

6 жыл бұрын

city is my solar system

@martiddy

6 жыл бұрын

Universe is my country

@snickeringdragon

6 жыл бұрын

Lucas Oliveira Saintrain potato is my life

@jennifermccarthy2415

6 жыл бұрын

galaxy is my continent

@georgeb.wolffsohn30

6 жыл бұрын

Space is my brain.

Everyone prepare for all the comments saying "If space is flat then Earth is flat too!!!"

@delta4093

6 жыл бұрын

Well, duh! If you think about Earth and the rest of the cosmos as the result of one big fart [the big bang] you'll see objective, irrefutable evidence that all celestial bodies our teachers have told us are round, in actuality, are flat! Why? Because "flatulence" has the word "flat" in it, obviously. It all makes sense, the damn government lied to us all!

@lmjenn65

6 жыл бұрын

Delta40 😂

@akyer8085

6 жыл бұрын

If matter bends the Universe, then it can bend Earth too! *Mind blown*

@elysium8131

6 жыл бұрын

shut up rick!

@ObsidianParis

6 жыл бұрын

Still better than "who's watching this in 2017"…

Subscribed. You make it so imaginative. Great work bro. :)

Fantastic vid! Thanks.

2:57 that self promo tho

But, cosmological inflation is a widely accepted solution for the flatness problem. This video implies we have no idea at all why our universe might be flat, which seems plainly wrong.

@PieMan061

7 жыл бұрын

Accepted as a plausible theory. I understand what you mean but it's hard to explain everything in 3 min. Also the "fuzzy part" before inflation is still difficult to model.

@chadd990

6 жыл бұрын

I guess you could say this video is **puts on sunglasses** flat out wrong YYYYYYYEEEEEEEEAAAAAAAAAAAHHHH I got too much sun today. Don't mind me.

@maltava4534

6 жыл бұрын

Inflation is an as of yet unproven hypothesis. To claim that it is fact or the correct answer is putting the cart before the horse. There are also several other hypotheses that match what we know thus far and as such are equally likely. They are also exclusionary. We need more observation and experimentation before we can build a sound theory for the flatness or expansion problem.

@xsabirx

6 жыл бұрын

because space is fake and the earth is flat

@geoffcunningham6823

6 жыл бұрын

I thought Inflation explained why the universe was uniform in density. I don't think it explains why the shape of spacetime is flat. You could have a inflationary uniform-density universe with a bit more energy, and it would have positive curvature.

I love that there is a Google + link in the decription 😀

This video is awesome!

"And yes the universe in constantly expanding" "then what is it expanding into?" "okay you just blew my mind" -Ferb internal conversion aka a children's show (Phineas and Ferb)

@dylanfiore3718

6 жыл бұрын

you watch phineas and ferb too! man, we're busted

@dylanfiore3718

6 жыл бұрын

I love when Doof, was spelled Doof

@ablipi

5 жыл бұрын

Ferb is braining

@Merennulli

5 жыл бұрын

It's expanding internally. There is no outside to expand into. It's not like a balloon filling up, it's like the surface of a balloon stretching. If you draw two dots on a balloon and inflate it, the distance between the dots increases, but it's an increase in the internal distance of the balloon surface, not an increase into something.

@toxendon

4 жыл бұрын

@@Merennulli I don't think my mind is capable of understanding how something can stretch and be finite and not have something outside of it

Could this be interpreted as evidence for multiverse theory? If life (or, at least, life advanced enough to develop sufficient intelligence to measure this sort of thing) is most likely to exist in flat universes, then the fact that we are in one for no discernible reason might indicate that there's numerous differently-curved universes out there and we're experiencing a cosmological form of survivorship bias. Of course, that's a big if, and it's one that I don't have the background to really argue in any compelling way, but at an intuitive level it seems at least plausible, and if we can demonstrate that it's true then that might give us a framework through which to approach this question.

@paolovincedelgado559

2 жыл бұрын

That's an insane take holy crap.

@ghsjshagusbshshshhhs8614

2 жыл бұрын

Yeah I was thinking that as well. We can't assume we are special so we kinda gotta assume there's room for other universes

@carso1500

Жыл бұрын

That and also things like the very specific strenght of both gravity and the electromagnetic forcé is one of the biggest proofs that proponents of the multiverse theory provide

@bronzejourney5784

Жыл бұрын

Problem with your take is that you expect a "discernable reason" for something to exist. What discernible reason there is for

Excelente vídeo. Muchas gracias! / Excellent video. Thank you very much!

I read about the flat universe many times, but I didn't understand clearly before I watch this video.

imagine if we actually live in a cool cosmic hyper-potato thoughhh🤩

@vedantsridhar8378

3 жыл бұрын

It actually could be. But then the cosmic hyper-potato would have to be so large that we cannot tell

@davidgumazon

3 жыл бұрын

No, this is Technoblade's Potato Deity

In addition, there is no way for us to know if we really viewed a significant portion of the universe, or we simply measured a small small area that therefore makes the universe seem flat, in a similar way that a triangle 100m wide would show the earth to be flat, while a triangle 2000km wide would prove it to be round.

@boginoid

2 жыл бұрын

That's why they say 'it seems to be', we may never know for sure. I mean we know that locally it's curved, also there is that Great Attractor drawing entire galaxies towards itself, so terms like local are on a whole different scale in spacetime. Who knows, maybe things work the other way around, and our universe "wants" to flatten, and that's the reason of the apparent perfect density, and not just some cosmic coincidence. Also, there is a chance that we got the wrong idea of something, did the wrong calculations based on that idea, and a lot of things we know might be simply wrong. Or maybe we are on the right track, but miss some crucial information. There is a whole slew of possibilities, luckily science is relentless.

best explanation so far!

I was looking for something a little more serious, but thank you all the same.

@luckyblockyoshi

3 жыл бұрын

well, this is named "minutephysics" for a reason

1:00 for the Hermann grid illusion anyone?

Does the universe had an end? What is there at the end of the universe, another universe ?

@Octillerysnacker

6 жыл бұрын

hornetluca if at the end of this universe was another universe wouldn't it just be the same universe but longer

@hornetluca

6 жыл бұрын

Octillerysnacker , mind blowing

@evandrolima1724

6 жыл бұрын

If the universe is expanding faster than light, in the edge because of time dialation, time is "frozen". And no matter how fast you go you can't go faster than the edge, your time would slow down. In the edge of the universe, it's like no time has passed since the big bang.

@uneducatedprof

6 жыл бұрын

The end of space is unobservable -- light beyond the horizon will never reach our planet or our galaxy (since all matter is accelerating away from us)... So for all intents and purposes, it doesn't matter whether there is an end. Kinda beautiful if you think about it.

@AmericanMusketeers

6 жыл бұрын

hornetluca asking questions there might never be answers to

Wow amazing explanation 👍👍

Could we also find out the shape of space in some places like this: if we know the speed things like the sun, earth and moon orbit, then we can test on different shapes of fabric, have some balls on the fabric just scaled down and scale down the speed too and test all the shapes and see if they match? Flat fabric is often used to demonstrate gravity.

can i get some sources for this want to do some further reading on the matter thanks :)

Space is like a great big ball of wibbly wobbly timey-whimey... Sstuff

@bananabeansyoho7781

6 жыл бұрын

Eeeeeeeeeeeeeeeeeeee

@nathanbrawley7256

6 жыл бұрын

Doctor whomst'dlyaint

@nathanbrawley7256

6 жыл бұрын

I get the reference. The OG rick and morty

@JoeMakaFloe

5 жыл бұрын

@@nathanbrawley7256 yes that's the one

@garyvte

5 жыл бұрын

Nathan Brawley well the OG Rick and Morty was Back To The Future.

Best explanation ever!👍🏼

For years, I've struggled to understand what physicists really mean when they say space is flat. I get it now and it's thanks to this video.

Me: I would like to order space fries.

Actually, the theory of inflation perfectly explains why we live in a flat universe.

@cjthomp2005

6 жыл бұрын

Vark321 keyword: "theory"

@maltava4534

6 жыл бұрын

Actually it is the hypothesis of inflation. There are many competing hypotheses about the early universe and how to explain what we see and why. We need more evidence before any of these can be a testable and predictable theory. When speaking in science it is only correct to use the scientific definitions for theory and hypothesis instead of the colloquial ones.

@avypath

6 жыл бұрын

Andrea Teal Not really. Theory in science means it has significant backing based on observation and repeated experimentation. Scientific laws are theories which have undergone so much experimentation under so many different circumstances that they are now widely held to be true, and would require extraordinary evidence to disprove.

@maltava4534

6 жыл бұрын

+AvalancheofNeed Sorry but that is not the definition of a scientific law. Scientific laws are expressed as mathematical formulas that describe how a phenomenon behaves. They do not attempt to explain any mechanism, just what is observed. They basically only state "this is happening and it can be described with this formula". For example, the Law of Gravity is not the same thing as the Theory of Gravity. en.wikipedia.org/wiki/Scientific_law

@Vark321

6 жыл бұрын

In astrophysics inflation is considered a theory: en.wikipedia.org/wiki/Inflation_(cosmology)

3:04 Our knowledge falls FLAT!!! Awesome video to see space as flat. 👍👍👍👌👌👌 🙏🙏🙏👁️‍🗨️ 💬💬💬

im an astronomer and the visualizations at 2:25 are actually really useful. thanks!

I miss the stick figures

@mlgesuschrist5518

7 жыл бұрын

But do the stick figures miss you?

@naryosh_

7 жыл бұрын

They might

@Weebish_Dragon

6 жыл бұрын

is your aim getting better?

*cough* we live in a simulation *cough*

@seby6669

7 жыл бұрын

o O 0 maybe

@Menno_3

7 жыл бұрын

What if we are a simulation inside of a simulation which is in part a simulation inside of our simulation?

@unfiltered577

7 жыл бұрын

o O 0 it's more likely than not

@MrDosonhai

7 жыл бұрын

Kado: The Right Answer is one hell of an anime about this topic.

@MrMartin1538

7 жыл бұрын

o O 0 We can't know if we live in the "real" reality or not and we'll never be able to tell what the "real" Reality truly is. It could all be a simulation inside a simulation inside a.... and so on.

I all ready own this book...a great lecture ☺tbh I wasn't able to stop reading ^^

So the expansion of the universe will on day curve the universe? (If not everything is connected and stays together)

you can make religion out of this!

@uranium404

6 жыл бұрын

no don't

@areg7182

5 жыл бұрын

the sun iz a deadly lazer

@Ratmania7777

5 жыл бұрын

@@areg7182 U FRICKING MISSPELLED A 2 LETTER WORD!!!111!!

@areg7182

5 жыл бұрын

@@Ratmania7777chill it's a meme

@viengsamphet

5 жыл бұрын

*noooooo*

if triangles in a space get bent inward or outwards im guessing that the tools we use to measure the angles will also get bent , which would lead to us never being able to determine if angles don't add upto 180 degrees

@YEASTY_COMMIE

6 жыл бұрын

no

@clgarrett7767

6 жыл бұрын

Good point

@YEASTY_COMMIE

6 жыл бұрын

no, not a good point, that's not how it works, the people who measured it obviously know what they're doing, they don't draw lines on a sheet of paper and measure them with a ruler

@id2349

6 жыл бұрын

Fuck me now

@maurits00222

6 жыл бұрын

Wouldnt space expand to the point of 5 hydrogen atoms per m3 and then stop expanding? meaning its at equilibrium like nearly everything that doesnt get energy added to it constantly. (at 5 hydrogen per m3 the shrinking and expanding is equal)

Finally after looking at 10 videos I found the answer I was looking for in this video

Own and love that book

Coincidence 😅. Since when did we start using the word coincidence for perfect balance?

@somemagellanic

4 жыл бұрын

because perfect balance would be a coincidence?

@seyyidhansaroglu

4 жыл бұрын

BakedBeans that doesnt seem cleverly. What a coincidence (!) That makes happen all life. And in this life only human can think on everything. There must be something we dont want to understand. We have to make an effort to understand the Real.

@nishantbhaskar7685

4 жыл бұрын

@@seyyidhansaroglu We are not basing off the coincidence as a 'mere' coincidence. We are indeed trying to find out the reason for this coincidence, although studies in that regard are still pretty illusive. Hence, we term it as coincidence to satisfy the momentary curiosity of ours.

Well being a follower of the anthropic principle, the reason we live in a specific universe is because we... well we NEED to be. Check the anthropic principal on youtube or wikipedia for a better explanation

@pranavarvind4281

5 жыл бұрын

I find it interesting too. I'd love to use it against creationists.

@lunyxappocalypse7071

5 жыл бұрын

@@pranavarvind4281 I use it against atheists

@ahumanperson3649

3 жыл бұрын

Nestrislia Crystal how does the Anthropic Principle go against atheists? If anything, it totally removes the necessity for a god to exist for us to exist, and then we can apply Occam’s Razor, meaning that it’s more probable that the universe just came out of nothing than an arbitrary god coming out of nothing and then creating the universe.

There is something out there that is way beyond what we can comprehend. Like this universe is just a tiny part of something that is so much bigger and only when we figure out what that is can we start to explain black holes and space properly. It’s the ultimate mystery

2:15 i wouldn't call it a "coincidence" that things happened to have turned out just perfect. i would call that "Intelligent Design"...

and that, my liege, is how we know the earth to be banana shaped

@bryanriley8783

6 жыл бұрын

This Science is amazing! Tell me again how sheep's bladders may be employed to prevent earthquakes.

5 is the only Fibonacci Number greater than Zero that is the same as the number of the term

@jeffvader811

5 жыл бұрын

But centimetres are a pretty arbitrary unit. Measure it in inches cubed or metres cubed and the number is no longer 5.

@dabest8147

5 жыл бұрын

@@jeffvader811 you're thinking of the spiral. If you just count along(1, 1, 2, 3, 5...) Then this is true.

@gooj6682

4 жыл бұрын

wow very super

@jeffvader811

4 жыл бұрын

@@dabest8147 I think the original comment I replied to was deleted. For context it went something along the lines of "there are 5 atoms of hydrogen per cm^3 in space" and they tried to correlate that with the Fibonacci sequence :)

Omg I love this book!!!

This book is amazing.

*Oh, entropy!*

@dankazmarek1259

3 жыл бұрын

here comes the villain of everything

everything is designed perfectly, the more I know the more I get that this universe is not just a coincidence, there is a smart design and a designer beyond our comprehension.

I feel so satisfied with this video

The fact that space can do cartwheel is the only information I need

2:30 My theory of why the universe has the exact amount of energy to be flat, it's just because if it were not that way then we would not be existing. Think about the conditions in which we would live, maybe some people do not think about it or pay attention but they have to remember how insignificant we are and the time we have living in this space-time.

@CRT601

6 жыл бұрын

AndyPiedram123 nope the shape of the universe should have no effect on life as far as I know

@skylar8277

6 жыл бұрын

but every coincidence is highly unlikely, so to add on to you, i believe there is many universes with every possible combination of everything and we happened to live in this one

@NeWx89

6 жыл бұрын

The inflationary theory allows for a region of flatness the size, or bigger than the observable universe and still be extremely curved as we zoom out into the whole size, wish according to eternal inflation might be 10^(10^30) times larger than the observable universe.

@dante35517

6 жыл бұрын

How would the curvature of space time be effected by an infinite universe?

@DJHise

6 жыл бұрын

In other words, the anthropic principle + many worlds interpretation. My hypothesis is that the net energy in the universe is zero. We started with nothing, but nothingness can split into positive and negative energy (like quantum foam). No matter how much you split zero into positive and negative matter/energy, we still get a flat universe. We would just be occupying the portions of space in which positive matter just happened to never cancel out with the negative. Antimatter could easily be repelled by gravity, dispersing into deep space.

What do you mean by flat? Isn't space in 3 dimensions?

@Speedinglobster

7 жыл бұрын

Ęÿūį Æßñ Flat is a possibility (and scientific answer)

@Tumbolisu

7 жыл бұрын

Dimension and Flatness have nothing to do with each other.

@FelkniaMusic

7 жыл бұрын

Yeah same question I have a hard time to warp my head around it.

@TheTheorizer

7 жыл бұрын

Sort of flat, because it's... Well I call it the fourth dimensional hyper ellipsoid's surface area

@hey7328

7 жыл бұрын

It's flat as in there's no curvature. 3 dimensional shapes likes spheres can curve into 4 dimensional shapes like hyperspheres. It's like how a 2 dimensional paper can be curved into a 3 dimensional shape

Awesome!!!

Oh my gosh thats so funny, I bought that book like a week ago (its really good), and was drawn to the thumbnail because I thought illustrations look “similar”.

What if, extra curvature in space causes anti matter to become transformed into an undetectable for of matter, stopping regular matter from becoming annihilated. Causing space to constantly balance itself toward a flat state while explaining both dark matter and why there exists more matter than anti matter. I must be right, I'm some random guy on the internet giving an off the cuff guess.

@MrtinVarela

6 жыл бұрын

en.wikipedia.org/wiki/Baryon_asymmetry#Regions_of_the_universe_where_antimatter_dominates en.wikipedia.org/wiki/Annihilation Jokes aside about being a random Joe, it is indeed very unlikely as we probably should have already detected such disturbances. Take in account that curvature of space does not make two particles uncollidable, otherwise it would be a very radical property of space that remains undiscovered and would require a theory compatible with current knowledge, plus any missing positive evidence for whatever such theory predicts. Furthermore, you should already know that in it's verbatim sense, "undetectable" is a concept science is not anyhow interested, if that's what you meant.

@chasesearle556

6 жыл бұрын

Me too. Doesn’t mean we couldn’t have brought up something new to a real table of study!

@clgarrett7767

6 жыл бұрын

So would there be an undetectable anti matter mirror universe? I kinda like that idea. Seems legit.

I'm struggling with that concept of having the perfect amount of mass/energy. Assuming our universe is indeed flat and infinite, imagine somehow enough matter/energy was added everywhere to positively curve spacetime. According to the example, that would mean spacetime is a closed surface, but it "started" so-to-speak as an infinite surface. I know adding infinite mass/energy suddenly is obviously not possible, but mathematically speaking it seems (to me anyway) that it would change from flat and infinite to curved and finite. I just don't understand how that would work. It's like a circle with one point fixed at the origin an having infinite radius, in other words a horizontal line. If you were to "decrease" the radius to any finite number, the line would collapse into the curved edge of a circle, but how does that step occur? The step from infinite to finite?

@thstroyur

6 жыл бұрын

ImagineBaggins That's a good question; first, where do those shapes come from? A: the Cosmological Principle, AKA FLRW metric. We already know there are 3 possible topologies for 3D slices of ST, which we input in the FLRW solution via a parameter k=0,+1,-1 for each; feeding this metric into the Einstein eqs wields the Friedman eqs, which, by a lil trickery, allow you to compute k (topology) from the (observed) energy density! But, remember that the CP imposes _tremendous_ constraints on the 3D slices - assuming that such a change of spatial topology occurs, even in the ''''preferred '''' cosmic frame, probably is beyond the FLRW sol., i.e., it's counter to observation Refer to others if u like ;)

@rtg_onefourtwoeightfiveseven

6 жыл бұрын

It comes from the first law of thermodynamics. Such a thought experiment is irrelevant because energy cannot increase or decrease in a closed system, such as our universe.

@thstroyur

6 жыл бұрын

This is true _locally_ ; what about _globally_ ? Is energy globally conserved in GR, _always_ ?

@rtg_onefourtwoeightfiveseven

6 жыл бұрын

Our universe is a closed system, therefore energy is conserved. Even as it expands, the mass-energy which appears in the form of a smaller mass defect is perfectly cancelled out by the increase in negative gravitational potential energy as a result.

@rtg_onefourtwoeightfiveseven

6 жыл бұрын

Also, I think underscores have to have spaces around them to work as an italicising tool.

I'm studing Space, Earth Science This video is sooo helpful

animation here is godly

It's like a ball of jello, grape flavor, we're bacteria

@simonruszczak5563

6 жыл бұрын

I'm a fungi.

@DannyDog27

6 жыл бұрын

Wait a minute… **Jeopardy theme plays** What?

@shaizahmedshariff

6 жыл бұрын

exactly,

A flat universe implies an expanding universe with a decreasing velocity approaching zero. However, what we've seen instead is expanding universe with an increasing velocity due to dark energy. So unless matter is being created out of nothing somewhere, mass-density will continue to drop and become more and more negative. How are astronomers and physicists reconciling "flat" mass-density versus accelerating expansion? it seems to be a contradiction, as there is an ever increasing volume without a corresponding increase in matter (mass).

@gralha_

6 жыл бұрын

The universe could change shape

@kvltman782

6 жыл бұрын

Dark energy and regular matter do not interact in normal ways. So it might be possible for Dark energy to cause the Universe to expand while having the universe retain it's shape. Also, the shape of our universe depends on the amount of matter, or mass and energy, and as far was we know, dark energy has no mass, and exerts no "normal" energy on regular matter. Note. The expansion of the Universe is a weird and not normal interaction of matter and dark energy. Please correct me if I got anything wrong! I'd love to continue this conversation!

@ravenlord4

6 жыл бұрын

Here are some diagrams that might explain better: www.schoolphysics.co.uk/age16-19/Astrophysics/text/Universe_flat_closed_or_open/index.html and upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Universe.svg/2000px-Universe.svg.png minutephysics says the universe is flat due to mass-density (omega) estimates being close to 1. But that is not what we observe when we measure universal expansion. What we see is a positive acceleration, which corresponds to an open universe: phys.org/news/2015-04-mysterious-dark-energy-universe-expansion.html So I don't understand if there are completing claims, or if minutephysics is just working with old data that was used before the discovery of an accelerating expanding universe and dark energy?

@Zazz30

6 жыл бұрын

The scenarios you mention, and diagrams raven lord provided, assume no dark energy because they're older than its discovery in 1998. Here's an article and diagram about that scenario, which you can see was published in 1995. archive.ncsa.illinois.edu/Cyberia/Cosmos/CosmosFate.html

@Sdog014912

6 жыл бұрын

Lol when y'all gonna learn that we know nothing about space and everything we do "know" about space are just educated guesses

this is pretty much the ‘fine tuning argument’ (fyi. hydrogen atoms per cubic meter are not the only fine-tuned values). You are absolutely right, that we can’t explain this in a testable way for now. I would like to highlight something very important tho: it’s not the universe that is fine-tuned for us, but rather we adapted to an already existing universe. Which obviously raises the idea that our universe might not be the only one.

fun fact, in space with negative curvature, there is a _maximum size_ of triangle. for a given constant negative curvature, there is some area for which it is impossible to create a triangle with greater area than that