What is the Universe Expanding Into?

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:

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Автор Gmmaverick (1 месяц)
"The fabric of space and time is expanding"
This is why I (being polite) call these people "babbling idiots"
*First-* Time doesn't exist, it's merely a measurement tool created by
humans to measure how long it takes for a particle to move from point *A*
to point *B* and,
*Second-* If space was "expanding" the most basic logic tells you that we
wouldn't be able to realize it because *EVERYTHING* would be expanding at
the exact same rate. Hence the solar system would be expanding, the earth
(and everything in it) would be expanding, WE would be expanding, and of
course our measurements devices would be "expanding" as well, *AND* with it
the measures themselves.

Автор chase1146 (15 дней)
what is the universe expanding into?? void. something that we dont know

Автор iiXeno (2 месяца)
This is false. God made the solar system and stars, not a universe as you
would call it. Why do you think he was on Earth? to save us!

Автор s0medudeonline (1 месяц)
In the video he said that if there is a boundary we can never see it
because the universe is expanding. I've got a fair understanding of the
expansion of the universe concept (I couldn't follow the math to save my
life but I think I understand the concept fairly well) and of course
looking from earth we could never see the boundary if there is one but if
someday we derived a technology to warp space to travel faster then light
or create wormholes and teleport then what is stopping us from seeing the

Автор Spread Love (11 дней)
but what if we develope devices, that can look further, faster than the
universe can expand. maybe it is someday possible

Автор dangflo (19 дней)
"And the heaven We constructed with strength, and indeed, We are [its]
expander" (Quran 51:47)

"Have those who disbelieved not considered that the heavens and the earth
were a joined entity, and We separated them and made from water every
living thing? Then will they not believe?" (Quran 21:30)

Автор Tecnovlog (1 месяц)
curved universe doesn't have any sense to me. bended by what? and what
there is outside? a wall?

Автор Yusif Carlos (1 месяц)
وَالسَّمَاءَ بَنَيْنَاهَا بِأَيْدٍ وَإِنَّا لَمُوسِعُونَ

And the heaven We constructed with strength, and indeed, We are [its]

Автор Zachary Hunter (4 месяца)
Simple. Thought creates reality. Pure consciousness is neither polarities
on the quitensential basis of metaphysics. An outer universe that wraps
around the universe created a world of gods and goddeses and their faerie
kingdom with their own version of nature. peace

Автор willieofroanoke (1 месяц)
Another video that answers no questions. Watching another of his junk...
oops I mean "science" videos he said before the big bang there was
literally nothing. Not time, not what we refer to as space, no atoms, no
matter, no particles, nothing, nada, totally empty, just a big fat zero.

That begs a simple but tantalizing question. IF there was nothing,
absolutely nothing, how did anything happen? You have no space for any
Singularity to form in. If that's not a big enough problem you neither have
time for it to happen in. Yet science insists this magical Singularity of
their imagination is the cause of both time and space and everything in it.

If you protest and say our universe is but one of many in some limitless
multiverse that's a cop out because all I need to ask is how the first of
these came to be. If you said they all happened at once, I still can ask
how? Where did the first spec of matter/energy come from? Say it always
existed and the universe or multiverse is infinite that still avoids the
same question unless you say everything that is, ever was or will be
originated from nothing. Absolutely nothing. Anyone honestly think that
makes sense?

Автор Aamir Mirza (1 месяц)
The Presenter assertion that we did not have any knowledge of other
galaxies about 100 years a go is plain wrong. Maybe in the West they did
not , Ancient Indians however were fully aware on the Universe, Galaxies
and stars , Our own Galaxy was called the "Akash Ganga", Universe
"Bhramand" , they knew the earth was round and went around the sun. As far
as 3000 BC.

Автор Justus McNeal (2 месяца)
The question is a good question, but the answer is simple:

This question assumes that the Universe is "inside" of something, which is
an assumption that, even if true, which no evidence points to, then it only
begs the question "What is the thing the Universe expanding into inside of?
Eventually, you're going to arrive at a point where this "thing" isn't
inside of anything, and it is simply all there is. 

Автор Roy Rki (3 месяца)
So the universe is a black hole?

Автор Brad Woodfield (3 месяца)
The Universe isn't expanding. The idea of the expanding universe was based
off the idea of red shift of the light we were receiving. It was initially
thought that the red shift was caused by the objects moving away from us in
the doppler effect. It was later found to be cause by the rotational
energy of the body, but the idea of the doppler effect had already been
picked up and the new results ignored. The idea of the expanding universe
(and dark energy) goes against the laws of thermodynamics and conservation
of energy since the amount of energy to expand the universe quickly ramps
to infinity. 

Автор maanil Laad (18 дней)
What if the whole universe is nothing but inside the brain of a creature?!

Автор Mark Kastrioti (12 дней)
This introspective into what we are looking at freaks me out!

Автор Richard Ames (15 дней)
The stars are not for man.

Автор VederchiHarry (1 месяц)
It all depends on what You call "our Universe". One thing is sure, our
"observable Universe" is about 28 billion light years in diameter and is
expanding into something that is also related to the Big Bang but we cannot
see because its beyond the Time barrier of the Big Bang.

Автор I haz Cheezez (15 дней)
no wait.
my life is to short to think over this kind of thing
Thats my conclusion about "Nothing"
Im going to do something fun now.

Автор Stuart Bermingham (3 месяца)
If the space between objects is expanding then doesn't that mean that
objects will also be getting bigger because the space inside them is
expanding? Therefore object would not appear to be moving away from each
other... please help me!

Автор princeahmad456 (19 дней)
If there is a boundary? What's outside it? And what's outside that? And
what's outside that? And on and on

Автор Spread Love (11 дней)
that gives me a science boner

Автор Dannys99887 (1 месяц)
@ Dean Bainbridge: When you see a comment that begins with the words "Time
doesn't exist", which then proceeds to totally dismiss one of the most
successful theories in the history of science, all you can really do is
ignore the nut job who posted it. He may be a religious fanatic, or he may
be a huckster peddling his own cosmology theory, but it's all simply
arrogance and ignorance, and there's never a way to penetrate that
combination. (The name calling starts really fast with these guys.) This
guy wouldn't be able to understand the theory's mathematics of General
Relativity, but he could understand the concepts of the theory with the
resources posted on the internet. He could understand the time coordinate
of cosmology by simply reading the Wikipedia article on "Cosmic Time." But
guys like this are not about to do something as simple as that. He prefers
to spout gibberish.

Автор I haz Cheezez (15 дней)

Автор Al Milligan (6 месяцев)
Interesting that when we talk about space/time we are measuring it by an
absolute space and time. These forms seem to be fixed. The narrator says
space/time is not a static entity. Measured by what but those forms of the

Автор Ron Bohlouli (1 месяц)
As I understand "space time"; If somehow all matter were frozen (stopped)
in a now moment, there would be no past or future Hence time would not
exist. Since all matter is moving, by all accounts in one direction "the
arrow of time" this gives us the past, the now and the future. And it can
work only in this way, barring warping space time, but that is a different

Автор Roxidius (7 месяцев)
Man, your videos are almost like a spiritual experience to me.
I'm an atheist btw.

Автор Jake Jones (1 месяц)
Notice that he did NOT answer the question when he said "if there are
boundaries"? He only said "we are expanding into something".

Автор Naeem kuzco (1 месяц)
"And the firmament We have verily built with might, and verily we are
expanding it*" (51:47)

﴿وَالسَّمَاء بَنَيْنَاهَا بِأَيْدٍ وَإِنَّا لَمُوسِعُونَ﴾

Автор Tefo Reborn (8 месяцев)
“And the heaven We created with might, and indeed We are (its) EXPANDER.”
(Quran 51:47)

Автор TheDarkomasia (3 месяца)
God doesn't exist, religitards, ever heard of the Big Bang?

Автор Gunter Raffel (1 день)
" ... the universe expanding into?" That is a misleading question. The
Universe is not expanding into anything but is simple expanding, and
thereby more space is 'created' that was not there before (to expand into).

Автор Naimul Haq (6 месяцев)
Why are the galaxies tumbling into other galaxies although expanding
universe means they should be moving away from each other?

Автор AlexanderHL (2 месяца)
NO! NO WAY!!! I REFUSE!!!! If space time has to be created anew, than
beyond the limit of expansion of our universe shouldnt be any existing
spacetime so what is? >:( Are we in the middle of nowhere? Where is this
nowhere ? Whats it made of? ARGGHGHHHHHH !!?!?!?!?!?! >:(

Автор Blake Stigerts (16 дней)
Look at these comments and convince me that religion isn't dangerous to the
human enterprise.

Автор sprinklegames (17 дней)
Dear religious hypocrites, do not watch this video... please and thank you

Автор Ludak021 (8 месяцев)
what is the space between electrons or quarks or anything in that scale?
It's not air of course, it's not gas (we are on a far lower scale) what is
it? It is empty and consists of nothing yet it provides some distance in
space...Maybe I am just ignorant...

Автор Commodore Man (21 день)
After seeing this I was wondering "what is nothing"? I can't come up with
one example of it. Nothing is just a concept, but to my knowledge has never
been observed. For us there is always something. Maybe that is what
infinity looks like.

Автор Wahab .Goldsmith (26 дней)
If we ever know what the universe was expanding into, then we can ask, what
is the thing the universe is expanding into placed on?

Автор snakebitmgee (4 месяца)
I don't know what makes less sense; A universe that ends, or a universe
that goes on forever.

Автор silverss onyoutube (19 дней)
its expanding because the edge of space is expanding into dark matter .

Автор Josh Cook (4 месяца)
If I had 1 wish, it wouldnt be for money or fame, it would be to know all
the secrets of life. I find myself with many questions. For instance....Our
earth is in the solar system, and the solar system is in the universe, but
what exactly is the universe in?

Автор poolehart (1 месяц)
I didn't follow, but I'm sure Youtube comments will clear this up for me!

Автор Introgauge .C (4 месяца)
Here's a question I've never heard before, is our galaxy moving somewhere?
and at what speed? Seems kind of naive to think that our own galaxy is just

Автор tracy roberson (25 дней)
Ahhhhhh you guys know more then me i am going to just...kill my hand (not
saying that is bad i just don't understand what you guys are talking about
in the comments)

Автор proximity1620 (4 месяца)
One day a person looking through a microscope will observe a person looking
through a telescope.

Автор SuperRustyTrumbone (25 дней)
i think i get it now. its like if you had a 2d universe in your hands like
a peice of paper and connected the ends, the 2d creatures would travel all
they way round and bend with the spacetime so it would seem to them like
theyre travelling straight. so its the same sort of thing for us right?
except the shape the universe is folded in more than 3 dimensions right?

Автор chamillion707 (1 месяц)
Name of the song at the beginning plz

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