What is the Universe Expanding Into?

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By popular Space Fan request, I offer this video to help answer some of your questions regarding the expanding universe. Many of you consistently ask: If the universe is expanding, then what is it expanding into?
This concept is non-trivial to try and explain in a 5 minute YT video, but I do my best. I hope this helps!
Thanks to all of you space fans for watching this channel, it means a lot to me.
Music from Kevin MacLeod:
incompetech.com

[@reydecopas6309]

At the very end of the universe there is a tax and revenue office

[@koutouloufas7]

No, there is a restaurant

[@bustedrav]

Dmv for sure.

[@greensombrero3641]

Now I know why the space bar on my computer is the largest key. I get it now. Space is big.

[@ADEehrh]

500 million years... awwww universe baby pictures. We were so cute back then.

[@troy2478]

They could have shortened the video by just saying "I don't know" the end.

[@user-se2xm5yp6u]

Well said.

[@cringyboring]

This is pretty much 90% of the Astrophysics content you find on KZbin ever since the pandemic hit.

[@MuhammadAdil-xu6sb]

Thanks

[@drvetsaveyourpet4622]

So hypothetically if we could reach the edge (if one exists), what is there? I mean would we just go into nothing? Or is it like earth, where if you travel in a straight line long enough you end up back where you began? Space BLOWS MY MIND. It makes me sad that we won't ever see the very very beginning of it, or reach other galaxies in my lifetime. There's so many things I have questions about that I won't ever get an answer to and that kind of makes me depressed when I think about it too much.

[@judsonkr]

We won't reach other stars in our lifetimes let alone other galaxies FFS. It is likely we will never even reach another star in thhe entirety of human existance.

[@keklordgrey4522]

I have always wondered since I was a child.... what is beyond the Universe...

[@orgami100]

There is a glass ceiling...

[@drvetsaveyourpet4622]

judsonkr hence, "hypothetically".

[@TheMaskedSam]

I have similar feelings of being sad cuz i wont live long enough to know the truth. However, what makes me cool that humanity will never know the truth even in a billion years, they wont even be able to travel outside the solar system. You might think it is possible but when you look at numbers you will understand that even our solar system is very huge for humanity power resources to handle. Travelling outside the galaxy is a dream will never come into reality. Even voyager 1before 30 years and still travelling at tremendous speed is still exist in our galaxy and didnt reach the edge of it

[@OwnageCubed]

This video really makes you think: "where the hell are we?"

[@RobbyBabes]

Imagine if life didn't exist. Where would anything be?

[@OwnageCubed]

Rob N If existence did not exist, then we are trapped in in a non-existant dimension

[@RobbyBabes]

If nothing existed to measure the size of an atom, would it be infinite in size? Would it be everywhere and nowhere?

[@islamaroc]

Answer is in the Quran (the last revealed book)

[@islamaroc]

just read it .. with clean heart

[@DantesInferno96]

I wish I knew everything there was to know

[@TheDipperPinez27]

sszorin big oof

[@jago76]

He needs to say 100 billion galaxies in the "observable" universe. There is absolutely no reason to believe we are at the center of everything and that there are no galaxies outside the distance we can see based on the light that has so far reached us.

[@greyloc]

He said that seven years ago. Now we know we are on the order of 10 billion or so galaxies in our little cluster of galaxies, which is one of 50 or so billion clusters in our local super cluster, and on and on.... as we get better technology, we learn more about everything that makes up our one universe in what is possibly the great multiverse or quantum universe. Who know for sure? I just like kicking back in the back of my truck way out of town, listening to Pink Floyd- Dark Side of the Moon and watch all the wonders in the night sky. Greeting from west Texas Ya'll

[@eminemishh]

Brian Acctually the earth is at the "centre" of the observable universe.

[@kgill99]

Correction-our planet is at the center of our observable universe.

[@jmp01a24]

eminemishh Any/everywhere in the universe you are will be at the center. It's a sort of paradox. The observer defines the universe from it's point in time and space.

[@PatIreland]

That is correct. It is also correct for every planet.

[@quetzalamaru]

Mean while, here on earth, we size our problems into politics, having no idea how insignificant we are to the size of this thing we intent to imagine - the universe.

[@Jaximous]

ikr.....

[@FedorovAvtomat]

Well unless we screw up big time and destabilize the Higgs field, thus ending all of the universe.

[@mornmorn4367]

bigdog1 i hope you are trolling

[@TrapnestShinigami]

I can't wait for the new James Webb telescope and the Giant Magellan Telescope to be operational. I feel we're gonna start to get images like we've never imagined before. It's an exciting time to live in :D

[@brianskinner5711]

I'm with you on this one--My fingers are crossed in hopes that this remarkable and complex endeavor will succeed. When just a boy, I saw Sputnik move across the sky just going Beep-Beep. So many things cause me to be ashamed to be a human, but this looking out and away is a proud and wonderful achievement.

[@TrapnestShinigami]

Yup! Gotta remember to look at such amazing events to mark a couple amazing moments in our hectic history as a species.

[@SuperYtc1]

Well you’re gonna have to wait because that thing still keeps on getting delayed.

[@dvgsun]

we probably have to wait for another year

[@utubepunk]

Well? Was it everything you hoped it would be?

[@mikebe41]

It blows my mind to know that infinity space exists

[@silence439]

"Two things are infinite. The universe, and human stupidity, and I'm not sure about the former." -Albert Einstein

[@silence439]

@Dan O'Moore former means the one before just so you know

[@silence439]

@Dan O'Moore it's fine!

[@wrathofme03]

Notice how he didnt comment about the latter

[@wrathofme03]

@Dan O'Moore no my point is he didnt actually say whether or not he thought human stupidity was infinite

[@wrathofme03]

@Dan O'Moore well he implies it but doesnt say it...and a genius like him likes to throw riddles like that out there.

[@MarcGoudreau]

Wow, the graphic sequences illustrating that fraction of the universe we've been able to map is awe inspiring. Beautifully done... many thanks.

[@dansmith3321]

I love this stuff.

[@superpeter3662]

I almost fell asleep listening to this His voice is so calming

[@DeusShaggy]

Keep looking up. Keep looking out. Keep looking in.

[@SuperYtc1]

I am looking in. I can see right now through your window what you are doing.

[@TheMaskedSam]

I like the voice acting of this man. Its so comforting

[@gui18bif]

There was a time The universe didn't exist Neither did that time.

[@fredkylam]

The last line contradicts the first line.

[@gui18bif]

of course it is.

[@neopker]

lul what is reality

[@dennisgalvin2521]

CANAL GG Ye, modern scientific view of time is bizarre,

[@Alejandro_87]

Is that a haiku?

[@eddiempate600]

I respect anyone who try to explain about the Universe. Explaining it, is as tough as understanding it. Excellent work bro!

[@JamaicanMeCrazy]

Our world and our understanding of the universe has changed so much in just a hundred years you just have to wonder his much it will change in a thousand years.... If we survive

[@RobKMusic]

Reading through the comments section is incredibly sad.

[@pneulancer]

+momus scythe It is an example of not humor, rather one more indication of the downfall of Western civilization.

[@dickchampion5860]

+mikey mize No, Nicki Minaj's ass is the fall of western civilization.

[@samiam123ist]

i am ashamed i took the time to glance at your comment(about taking the time to read comments)(that is sad for both of us)

[@NikhilKumar-ez5mo]

Agreed.

[@rodneylusk4325]

Rob K Music No Doubt God created the it all

[@fanjapanischermusik]

there is also a 3rd possibility: imagine a balloon, its surface is not infinite big, but you can walk around on it and never hit the edge. and when you blow air in it, it gets even bigger but is still infinite as it was before. i think spacetime is a bit like it.

[@TheSilentStrife]

+fanjapanischermusik Smart thought.

[@JackassBauer1]

+fanjapanischermusik Just as when human thought the earth was flat, they could not conceive what come after the edge of the "observable earth", so they said when you go over the edge, you fall in oblivion. And it turned out the earth is a kind of a "infinite plane" in the shape of a sphere. Maybe we just need to change the way we observe the universe...

[@jab7168]

+fanjapanischermusik so the surface of the balloon would be two dimensional, and we would be unaware of the higher dimension we are expanding into?

[@derek-press]

+fanjapanischermusik and what is inside the balloon?

[@nightlightabcd]

+fanjapanischermusik - And what is the space outside the balloon?

[@burnts1enna]

What an interesting question! I never thought of that before!! Thanks.

[@riyazpatan111]

this video is roller coaster of emotions !

[@ks2884]

If there is any boundary in the Universe, the question is: what is beyond it? I wouldn't be surprised if there were other Universes like ours separated from each other with empty space.

[@user-se2xm5yp6u]

If that is so they would exspand into oneanother would they not.

[@forfpartyforfparty6459]

Time slower each succesive demention

[@davidhess6593]

Define universe.

[@ks2884]

@@davidhess6593 Space with stars and planets.

[@Zntii]

I should be studying, but my brain wants to know the mysteries of the universe.

[@JodBronson]

Each Day, all I can say is...., Large or Small, I feel really " Lucky " to be a part of it :D

[@jc-qd6be]

its mind blowing to think that out there never ends..its just that everything on earth comes to an end .this shit does my head in...

[@ThePieMan305]

I just realized that the big crunch, big freeze and big rip are the three stages I go through when eating rocky road ice cream. Mind Blown.

[@troyscorner803]

ThePieMan :|

[@paulhabib5697]

Considering the universe is a bounded infinity. From the observer's perspective, ours, the further we look away, the more we see into the beginning of space time. Since the universe is expanding into that direction, away from us, I suspect it is expanding, quite literally, into it's origins-the singularity from whence it spawned. The future is, in fact, becoming the past.

[@SkullFilms]

Great video, subscribed. I hope i can find more videos like this one in your channel. I really enjoyed the intro, long but no boring.

[@chiefseadawg5164]

The latest estimates I have read on the number of galaxies in the visible universe is 2 trillion, not 100 billion. But even 100 billion galaxies is a number that you just cannot rap your head around. The universe is indeed one huge and very mysterious place.

[@brucegelman9671]

Try not to rap your head(ouch) wrap your head

[@ronaldderooij1774]

The more I learn about the universe, the less tangible it gets. Space and time linked, third dimension is an illusion, space is a hologram, energy out of nothing, virtual particles, time is an illusion, etc... I did not know that a year ago... If this goes on I think in a few years time, I will learn that my whole existence is an illusion created by my own illusive brain or something?

[@mindyourownbusinessfatty]

Are you an idiot, sorry are you an illusory idiot.

[@ronaldderooij1774]

24414330 I regularly ask myself, what satisfaction it gives to people like you to write down such stupid comments?

[@mindyourownbusinessfatty]

Ronald de Rooij Good question, when I read idiotic posts like yours, I come to the conclusion with evidence that this man has written an idiotic comment. Therefore, the only plausable reply, is to ask the question "are you an idiot". If you dont want to be called an idiot, then dont write idiotic comments, its that simple.

[@ronaldderooij1774]

24414330 I could not care less to be called an idiot by people like you, haha. I think you really are good in projections. Idiot!

[@mindyourownbusinessfatty]

Ronald de Rooij The fool who knows he is an idiot is at least wise to that respect. You dont even know you are an idiot. Which makes you the biggest idiot of all.

[@Roxidius]

Man, your videos are almost like a spiritual experience to me. I'm an atheist btw.

[@asrewefwefw1105]

Same here

[@snakebitmgee]

asre wefwefw Oh goody! Another atheists. What else can you share with the world that nobody gives a flying hoot about? Are you gay? Are you black? Have you ever had a heart attack? Can you sing? Do you swing? Have you ever felt a scorpion sting? What's the meaning of your life? Are you happy and rich, or are you lonely and filled with strife? Are you angry and mean? Is your house messy, or do you keep it real clean? I guess it really doesn't matter, so I will quit with the chatter. When you're dead, you are dead, and that makes you mad as a hatter.

[@asrewefwefw1105]

snakebitmgee I'm Gay and Black and i belong to the middle class... I'm lonely and happy and yes, dead is the end for all of us until science invents the inmortality. I invite you to make science i don't caer if you believe in god or not (that's your problem and you are liying to yourself) but please do science.

[@Roxidius]

snakebitmgee copying and pasting makes you look like an idiot. get the fuck out of my thread and spread your poison somewhere else fucking zombie!!

[@snakebitmgee]

asre wefwefw You must not be paying attention. Science has already proven God's existence.

[@johnbird2586]

This is the best video that I have listened to so far, that explains the universe. It is simple to the point! Thanks. 👍

[@rxonmymind8362]

Wait! Wait! Before I watch this I know the answer....NO FRICKIN CLUE. 😁 Am I right?...

[@CharlesPayet]

These videos by Deep Astronomy are really well done and excellent explanations of so much of what we know, and what we're still learning, about the Universe we inhabit. Wonderful stuff!

[@Rosevillecaliforniadentist]

Nice.

[@leggoego]

Every time I sit down and really try to wrap my small mind around what the universe is, or how large it is, or how mathematically reasonable it is that there is life on other planets and things like that I get this strange feeling. It's almost like excitement that comes with shortening of breath and other odd sensations. Is this weird?

[@KinguCooky]

It's called 'wonder' - it is the catalyst for our journey into the cosmos. I feel our far off descendants will view us with great affection, and possibly envy us living in an age of ignorance and discovery. They may even say to their children when they put them to sleep at night: "A long long time ago, on a blue planet somewhere out there, people would wish upon the stars that me and you now travel amongst. If it wasn't for them, we wouldn't even be here - If only they could see how their wishes came true. Now, goodnight you grey, massive headed little telepathic princess, and sweet dreams."

[@charmendro]

I liked the ending saying how we used to think the galaxy was an island and now that’s how we feel about the univers

[@FatBastardPipes]

The intro and music hearts the ears on headphones.

[@atomicvapor1561]

My head hurts

[@aaronmuller6050]

Atomic Vapor That's a good sign

[@MakeStationWagonsGreatAgain]

Mr. Darnell, you're an amazing narrator! Very reminiscent of Carl Sagan!

[@paxwebb]

Best explanation I've ever heard is that space is expanding into itself.

[@83jbbentley]

Universe, Megaverse, Ultraverse, Omniverse, Zverse...just joshing..this very beautiful.

[@AirEnderman13]

If the universe has boundaries, it's said that we can never reach the border because it's constantly moving away from us. However, who's to say our Galaxy isn't close to the border of the universe? Still too far to detect it, but still right on the edge, moving along the border as the universe expands.

[@Dannys-mb5xy]

We know that we are at the CENTER of the OBSERVABLE Universe by definition. The Observable Universe is the maximum distance than we can see when we look out into space. Since we can see the same distance in all directions, then we are at the center of the Observable Universe. The radius of the Observable Universe is defined by the Particle Horizon, which is calculated to be at a distance from the earth of over 46 Billion Light-Years in all directions. So we're over 46 Billion Light-Years from the edge of the Observable Universe in any direction we look, and we know that the Total Universe extends beyond that......probably FAR beyond that. So even if there is a boundary to the Total Universe, we know that we are very far away from it....at least over 46 Billion Light-Years. A "Veritasium" video on KZbin discusses the Observable Universe and the Particle horizon. It's titled: "Misconceptions About the Big Bang,"

[@smallfry7743]

It's expanding into something close to nothing, but different than the day before. And that's when I saw her, ooh I saw her. She walked in through the big bang, big bang.

[@kgill99]

Great to see a science video showing some humility-we don't know if there is an edge, if there is an edge we don't know where it is and what it is expanding into and (possibly a bit pessimistically) we will never know... All those statements are a lot closer to the truth of things as best we know them now than anything else you will read anywhere else.

[@Zeppelinzulu]

Really enjoyed this..... going to watch more when I get WiFi.... what an amazing place we live in!!!

[@Wawiwowuwe]

The universe is just a piece of candy lying on the ground in a park. We are so damn small that we will never ever comprehend this...

[@stevetreloar6602]

Magic, thank you.

[@yshuasson]

Thank you for the video Tony, I thought it was well done and it obviously sparked some debate and thought. One reader commented that a lot of posts are rather sad; I have to concur. I would rather see us encourage debate, not put down somebody's effort to put forth their idea(s) on current theory; and it is always [current theory] until the next theory or discovery comes along. Again Tony, well done. Thank you. Wm.

[@neil6477]

I thought this video was very good. I also think that many of the critical and sarcastic comments are made by people who need to drop their own intellectual pretentiousness and ask themselves who this video is aimed at? Don't forget not everyone is as wise and as all knowing some of you seem to be. Many people are approaching these types of questions for the first time, for such people this video is an excellent first step. Although now retired I have spent my life teaching maths and physics at college and university level, this is exactly the type of material I would present to my students who are just starting out on their journey of discovery. I think the makers of the video have struck a good balance of being informative without being too speculative or self indulgent - unlike some of the posts that they have invoked. Well done!

[@universalstudios13]

If we say that the universe has a boundary, what would we call the space/zone/area on the other side of that boundary? Is the outside not still considered as a part of the universe?

[@goodmanj1941]

it is called " the bulk" as described in M theory

[@universalstudios13]

Not Sure Thanks for the response Brother. When I look up the definition of the word Universe, it can cause some confusion due to the fact some definitions include "the bulk", and others do not (even though they don't refer to "the bulk" by name. I think that it is important that the defiinition be made clear in order that people understand what is trying to be implied in science video's. This changes my view and understanding on so many things, and know I can understand what other science video content makers are trying to say. Peace and Respect Brother.

[@jakejones5736]

***** The first dimension is a line. Add the second dimension and you have a plane. Add the third, and you have a box. Another way to look at it is length, area, volume. Your example fails because it excludes the third dimension, and space is 3-D.

[@jakejones5736]

Sebastian K. "space time curvature" No such thing. That volume can be infinite destroys your theory.

[@jakejones5736]

Sebastian K. "What is gravitational lensing then..?" Nothing that proves such curvature.

[@rasverixxyleighraq1509]

One thing I often wonder is if the Universe is finite and has an edge, then what would it be like for a civilisation living in a galaxy on the edge, in one direction there would be nothing and in the other there would be everything. Very cool

[@jacobh869]

U need to go to Arby's they have new stuff on menu ok?

[@richardt8604]

Rasverix Xyleighraq there is no end to the universe just like you can count for ever ! There is no edge to anything ,it goes ever increasingly smaller and same bigger !

[@j-man72b72]

Rasverix Xyleighraq , I often wonder what the night sky would look like if we were in a different location within our galaxy especially closer to nebula, would they have been part of mythology? The Titans perhaps? Being at the edge of the universe would be a natural variation on that theme.

[@budlit1854]

Duuuuude

[@momin4811]

Rasverix Xyleighraq there is no such thing as nothing

[@1ginner1]

Simple, either an expanding universe into infinity, or an expanding universe which will then contract, resulting in a crunch leading to another big bang. Not sure how you prove either hypothesis, but go for it, and I wish you luck.

[@clintwolf4495]

Great video. Thanks.

[@NothingMaster]

The Truman Show, all the way out. Something beyond the transfinite boundary is replaying our universe’s recorded spacetime tape. Heck for all we know, it might even be a malicious extra-dimensional child.

[@k7jeb]

That's right. We are living inside some kid's Science Fair experiment.

[@ZammleMan]

I've watched so many universe type videos I've seen that blue square grid zooming in animation so many times. :D

[@mach037]

C'mon, spit it out. Does the grid bother you, or not?

[@ZammleMan]

no? XD

[@ernestimken5846]

E=MC2 also says that space, time, and energy are finite. If the universe has a beginning then it has an end. Everything loses energy with the passing of time. Then energy will end and the expansion of the universe will reverse into shrinking and it may be faster or earlier than we ever imagined.

[@draganatanasov2503]

Some of it I find it's language, and how certain expressions are taken. For example the words "expands forever" can be taken in two ways: It keeps on actively expanding, or it could also mean (which I think it's probably the more correct way in which to perceive it), it "expands forever" means there is no boundary and space never ends as a given. I hope you get my gist.

[@derivious2012]

Asking what's beyond the universe is like asking what's north of the north pole

[@safesurfing9486]

This video really makes you think!!! Should people be making shorter intros :P

[@jennibaxter9588]

We are all so small! However, I find this beautiful.

[@martinmanifold2241]

Thank you and great music to

[@kamokak3799]

what if our universe has always been expanding and there were infinite amount of big bangs that exploded and expanded the galaxies before ours. If that is true wouldn’t it make sense if the civilizations from early big bangs 1. gotten so advance that we are not worth visiting. 2. Extinct.

[@dralberthofmann]

Speculatively it could be expanding into the substrate of a multiverse.

[@50PullUps]

Cooks With Spoons shut up idiot

[@jb111082]

Why should he? He could be correct. No one really knows.

[@Phoenix-tv4gb]

Love , Light , Awareness , IAM is reality and energy is all the forms and emptiness on virtual reality .... 😍💖🕊️🎶

[@atheistveganmillionaire2952]

great video! 👍

[@Livereater]

plain & simple we will never figure out how large the universe is. humans will be dead in a few thousand years and the cycle of 'life' continues on other planets in different forms.

[@wissamsakre]

Smart peoples All my respect for your achivements with this good video

[@samthegreekboy6812]

It may not be so mush that the Galaxies are expanding out into new space but that new space is getting in between galaxies. OR. its not so much that galaxies are moving away from each other but more space is moving in between them.

[@NomosCharis]

@4:10 " if that is true however, then the boundary is so far away that we cannot see it, and it can therefore never ever affect us." Right. Because things that we cannot see never ever affect us. Like germs and radiation. Good logic there

[@peterstefanovic6010]

So what would astronomers in the most distant galaxies see if they look in all directions ?

[@nominus1138]

They would see basically the same sort of things we are. A never repeating pattern of galaxies, each becoming bluer and younger and smaller as duo look further out, then would see the point the universe reionized in the cosmic microwave background.

[@sanjuansteve]

When the big bang happened, what did it explode into?

[@donmackay9315]

Very well done. Great narration.

[@anusarin3096]

It is absolutely glorious and outstanding

[@armeture27]

3:07 KSP vets know all too well what that music means. "I actually got this flying bundle of fuel and scrap metal into space!"

[@iNiMiNiMike]

jup, haha.

[@EarnSomeRespectOT]

The minute I heard that music I'm just lie "ayyyyyyyyy"

[@DanMice1]

The universe is expanding into itself.

[@davidduffy9806]

Beautiful, thank you so much, glorious!

[@David-qu1hh]

This video leaves more questions than answers.

[@safesurfing9486]

When you throw stones in the water what is the water expanding into?

[@martin-jp8ml]

I really wish I knew the answers to some of these questions! to the point where it angers me not knowing!! when will we know..

[@josephselkow2845]

A friend of mine was depressed because he heard the sun will only last another 5 million years. When I explained that in fact the sun will last another 5 BILLION years he was very much relieved and very happy again.

[@neilcoss1589]

That was absolutely astounding. One of the best posts in the history of youtube. That you so much for your incredible insight.

[@stratopastor_uk]

I love the use of the word 'creation' in this.

[@adjuster57]

Yeah. I’m just thinking about removing my living room carpet, and replacing it with tile.

[@sunnythymes5444]

Excellent!👍

[@Tnbeazy]

Awesome video!

[@TheOmnipotence]

Maybe we are looking at this at the wrong angle or perspective. I imagine the universe as a 4th dimensional balloon.Imagine you are inflating a 3D balloon then 2D creaturs thrive on it. They will think its infinite because there is no edge and they think that their universe started from a "point" but the truth is, it started everywhere. As you indlate the balloon, every part of it expands. So maybe our universe is like that. Expanding into a 4-Dimensional space.

[@eddy-nd7nh]

TheOmnipotence 👍

[@hans2695]

Finite but infinite, exactly. I thought of that also.

[@EagleLogic]

I love your theory

[@XxBobTheGlitcherxX]

pretty popular theory in relativity. The universe is either flat or a weird 4 dimensional thing

[@adamharrison927]

But that begs the question, what is the 4 Dimensional space and how did it come into being

[@stevecoley8365]

The universe expands to give stars a place to live.

[@bonchance9241]

its good to pose the question most people never think

[@KillsAll.]

You have done well

[@ILoveMagic15]

Video starts at 0:45

[@janecasper846]

Good looking out bruh

[@YanVidz]

This should be pinned

[@randy109]

If our Galaxy was the size of a Neutrino, the size of the observable universe would be about the size of a Hydrogen Atom. All things being relative we should be studying and spending more on the Sub-Atomic "world". We like to think BIG but thinking small sort of frightens most of us...

[@goteverlastinglife]

Well, glimpsing though a few comments, I for one thought your video was pretty darn good. Science definitely has its limitations. What could the answer be? Could space really be infinite? How is that possible? Everything we see and know has boundaries. It is literally mind boggling! And even a deeper question... Why?

[@ioanbota9397]

Really I like this video so so much its incredible

[@lordilluminati5836]

good video, but your intro is too long,I think you should make it shorter in the future.

[@deepastronomy]

I know, people have pointed that out. Later videos have 15 sec intros. Thanks!

[@computer_in_a_cave2730]

Naaaah... Don't cave to impatient people... (Your craft is sound). I liked the intro as it helps me mentally pull focus on the subject we are dealing with. It's like you have been outside in the sun, and it takes your eyes a good 45 seconds to adjust to a dark space. Similarly with the topic in hand, most people transitioning to this video are having to deal with the flotsam and jetsam of everyday life... So I find the introduction helpful to change "Metal gears" and be able to visualize and in a sense try to intuitively feel or wrap one's head around the vastness and truly epic naure of the topics we are dealing with. It's all good ! :-)

[@NickJanosky]

+Extra Dimension That is a good point

[@steelymcbeam4296]

It used to be smaller, but for some unexplained reason it began to expand.

[@davidware3240]

Let's face it.goes on forever

[@genie0390]

the universe is infinite in every direction, the human mind cannot process that concept and never will. This precludes thinking as to what's beyond the edge of the universe

[@timefororbit]

No. Either the universe has an edge or it's infinite. Something that is infinite doesn't have an end-point, by definition. Something that has an end-point isn't infinite.

[@dolphinsatsunset1]

The universe can't be infinite. If the universe had a beginning about 14 billion years ago then the universe must be trans-finite meaning that it is unimaginably huge but still has a finite volume. If you were to keep going in one direction you would eventually come back to the place you started because the universe is a curved 3 dimensional surface of a hypersphere.

[@nikolaydyankov7866]

SpaceTimeMachine Think he meant the edge of the observable (part of) the universe.

[@TheMongobongo]

dolphinsatsunset1 np

[@Dannys99887]

There's a lot of confusion about whether the "edge" being talked about is the edge of the defined observable universe, or about the larger (maybe "infinite") universe of which it's just a small part. The only "edge" to the observable universe is simply the limit of our astronomical observations of light which has been traveling since the big bang. The size of the observable universe expands each day with the 24 hour age increase of the universe, and simply expands into the larger universe which surrounds it. As for the universe outside of the observable universe, it's size is unknown. What sort of an edge it has if any is unknown. But the measurements of the WMAP and Planck satellites against the "surface of last scattering" of the Cosmic Microwave Background radiation indicates that the large scale topology of the universe is "flat." Which is to say "Euclidean"......that the sum of the interior angles of a universe-sized triangle based on the variations of the CMB radiation totals 180 degrees, as close as it can be measured.

[@Cooliofamily]

It's not as though the edge is moving out, but it is expanding at every point. Imagine space like lots of small points. And they keep dividing. That's pretty much what happens!

[@jacobbosley2425]

Not a motionless box or sphere that expands, but a form moving in a way similar to flowing that has a direction and folds that overlap as a fluid poured from a spout behaves. Only as infinite as its purpose if it’s life like ours an beyond.