Do We Expand With The Universe?

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minutephysics

minutephysics

Күн бұрын

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Minute Physics provides an energetic and entertaining view of old and new problems in physics -- all in a minute!
Music by Nathaniel Schroeder / drschroeder
Thanks to Nima Doroud for contributions. Created by Henry Reich

Пікірлер: 3 800
@tylerjaafari
@tylerjaafari 6 жыл бұрын
Man, I just love this stuff. Learning about how the universe works and being reminded of how, eventually, each little stellar neighborhood will be ripped away from its galactic clusters and we will all be suffocated in the cold, unending, and unfathomably solitary darkness of space.
@PerfectBlade20
@PerfectBlade20 10 жыл бұрын
Come back cat :(
@mickeymoose636
@mickeymoose636 7 жыл бұрын
Arctic 3 years later and this comment still speaks to me
@kiyoshi2693
@kiyoshi2693 4 жыл бұрын
And another 3 years.
@magshdz
@magshdz 2 жыл бұрын
NOOOOOOOO!!!!!!!! CATTO COME BACK!!!!!!😭
@justsomerandomguy4127
@justsomerandomguy4127 10 ай бұрын
Another 3 years
@fijcat
@fijcat 6 ай бұрын
Another 3 months
@dylanmorales2209
@dylanmorales2209 8 жыл бұрын
First of all, how do you get a leash on a cat? Second of all, you'd be chocking that cat.
@jakebewely6519
@jakebewely6519 8 жыл бұрын
who cares it's a cat
@TieableCookie
@TieableCookie 7 жыл бұрын
Jake Bewely fuck you.
@fractal5764
@fractal5764 3 жыл бұрын
@@jakebewely6519 has your opinion changed
@icuXD
@icuXD 8 жыл бұрын
Mum! I'm not fat! I'm just expanding with the universe!
@yektako
@yektako 8 жыл бұрын
Underrated comment
@vxdxnsh
@vxdxnsh 7 жыл бұрын
+Yekta Köktürk rate it then
@Siberius-
@Siberius- 7 жыл бұрын
Hmmm.. 4/7.
@dandondayrit4471
@dandondayrit4471 7 жыл бұрын
yperz q
@superoxidedismutase5757
@superoxidedismutase5757 7 жыл бұрын
The video specifically stated that we do NOT expand with the universe because our electromagnetic forces keep our atoms together. Thus the comment is incorrect and doesn't deserve its likes.
@pcyumwa
@pcyumwa 11 жыл бұрын
I have a masters degree in Physics, and I have to say that was the most eloquent visualisation and explanation of universe expansion I've ever seen! I find myself understanding it in an entirely new way. Genuinely surprised, and pleased I watched this!
@TonyF1MMA
@TonyF1MMA 8 жыл бұрын
I've actually been wondering this for a while now so this vid was really helpful.
@nomansbrand4417
@nomansbrand4417 3 жыл бұрын
Same here. However, does this not introduce additional energy into the gravitational or electrically bound system? After all, in the picture presented here, the interacting particles are moving along a force gradient through space. Anyone?
@zone07
@zone07 10 жыл бұрын
This is why I tell my wife that I'm not getting fatter; I'm simply expanding with the universe! Thank you minute physics!
@drednaught608
@drednaught608 10 жыл бұрын
You're not getting fatter; you're getting smaller. (relative to the expansion of empty space)
@zone07
@zone07 10 жыл бұрын
drednaught608 For me to say that I'm getting smaller might be a turn off for my wife. She might enjoy the term "thinner" but such term might be construed as incorrect. I just don't want her nagging me when I'm eating a burrito :)
@amihartz
@amihartz 10 жыл бұрын
But you don't expand with the universe, which is what this video explained...
@zone07
@zone07 10 жыл бұрын
Amelia Hartman thanks for ruining the joke :(
@samreads
@samreads 10 жыл бұрын
Ignore them, +zone07... their sense of humor is shrinking at a rate faster than the expansion of empty space, so their ability to appreciate jokes is tending towards zero.
@darthcervantes
@darthcervantes 4 жыл бұрын
This explained space expansion way better than the 5 hours of science channel I watched last night. I needed it in simple terms and the drawings on the grid helped it click for me. Thanks
@ruhicenetvideos
@ruhicenetvideos 11 жыл бұрын
He is keeping them, nad once he said he'll find a good use for them, maybe he'll make them books.
@EternalSilverDragon
@EternalSilverDragon 10 жыл бұрын
"The cat is off the leash" made me feel sad. :'-(
@BoringNugget
@BoringNugget 11 жыл бұрын
I'd just like to thank you, throughout all of these videos you have been making science fun for everyone- and seeing that your the TOP recommendation when you type mini into the search, it makes me happy to know that you've made science so much more fun for the community, Thank You minutephysics.
@Daniel-fi7jp
@Daniel-fi7jp 11 жыл бұрын
Thank you Henry :) amazing video, despite what others say i am waiting patiently for your next video
@tomatodamashi
@tomatodamashi 10 жыл бұрын
This video doesn't make any sense. I mean who walks a cat?!
@natheniel
@natheniel 10 жыл бұрын
i did.
@VixenAurora
@VixenAurora 10 жыл бұрын
I do.
@antonmayorenko6736
@antonmayorenko6736 10 жыл бұрын
If dogs can be walked on a leash, a cat will do it perfectly fine as well.
@asheqularif6280
@asheqularif6280 10 жыл бұрын
it doesn't work as well as dogs but it can be done
@chibiemo100
@chibiemo100 10 жыл бұрын
I walk a snake fuck me right?
@ddermont6058
@ddermont6058 8 жыл бұрын
Good god man. Have you ever tried to Leash a Cat????? LOL
@xMasterJuiceX
@xMasterJuiceX 11 жыл бұрын
great video that is easy to understand. keep it up!
@bsrrhsl
@bsrrhsl 11 жыл бұрын
Awesome good ole classic minutephysics!
@jktomas
@jktomas 9 жыл бұрын
Very well explained. But what I still don't understand is why was space expanding in the beginning of the universe when everything was close to eachother? Wasn't gravity supposed to hold everything together?
@craycraytotesbruh3262
@craycraytotesbruh3262 9 жыл бұрын
I'm going to go out on a limb here and say gravity has absolutely nothing to do with the size of spacetime. Just imagine in the future when the expansion of spacetime is so fast that the only thing we can see in space is our own galaxy. A future civilization will, from observation, assume that the milky way galaxy is the whole universe and that gravity makes the whole universe spin around it's center. When really all they are describing is how a galaxy works, not the whole universe. They will also have absolutely no evidence of spacetime's expansion. This might have already happened, the universe may have been a trillion zillion light years across but it's expansion rate has made it look like it's only 13.7 billion years old. Think of an ever decreasing event horizon towards your position. The big bang explosion radiation we see everywhere? Just the light of the rest of the universe getting stuck and stretched at the event horizon. So what drives the expansion of the universe? It could be a 4th dimensional bubble (or blackhole) that is expanding due to 4th dimensional gravity attracting 4th dimensional matter into it. With us existing in the 4th dimensional bubble's 3rd dimensional surface.
@jktomas
@jktomas 9 жыл бұрын
CrayCrayTotesBruh Thanks. I'm sure you know what you are talking about but I'm not smart enough to understand it yet. :) So my question is still open. But you made me wonder. I never thought of that before, but it's really creepy to think that future civilizations will have no knowledge of other galaxies. I know that humanity might never reach other galaxies anyway, but just knowing that many more galaxies with many more stars and planets are somewhere there is comforting in some way. As big as our galaxy is, it's not big enough when you think that that's all there is in the universe. Thank god we live in this time period and not billions or trillions years in the future. But then again, maybe living billions years earlier was even better.
@mohammadtausifrafi8277
@mohammadtausifrafi8277 9 жыл бұрын
jktomas Gravity does not obstruct the expansion of space i.e. it does not work on space itself.
@Crmson117
@Crmson117 5 жыл бұрын
@@craycraytotesbruh3262 Yes, a 4-D hyper cube would have 24 faces, each of its eight surfaces being a 3-D surface like 2-D squares are the sides of a 3-D cube. Perhaps our reality is a surface of a higher one or couple n_n
@MahraiZiller
@MahraiZiller 10 жыл бұрын
Surely the video should have said that Gravity and Electromagnetism are too strong for the CURRENT expansion of space to overcome?
@solaris117
@solaris117 11 жыл бұрын
One of the best minutephysics videos so far!
@nikkitytom
@nikkitytom 7 жыл бұрын
I fretted over this puzzle into the wee hours ... Such a beautiful, concise and comprehensible explanation for people like myself who are burdened with endless curiosity along with big gaps in their scientific education. I also like the cat. Mine walks reluctantly on her leash and messes up gravity and cosmic expansion.
@icarus313
@icarus313 10 жыл бұрын
"I do." --Gravity
@ginkner
@ginkner 8 жыл бұрын
TLDW: Don't put your cat on a leash.
@matyviola
@matyviola 8 жыл бұрын
+Ben Actually its put it on a leash or you will lose it because space expansion
@gregonasher
@gregonasher 7 жыл бұрын
Dude I've read so many physics books watch so many videos , read so many articles... finally I understand why galaxies are receding but the space between our Atoms, solar system, and galaxy is not. In your one minute video you've made me understand something that bothered me for most of my life. Thank you so much! It's opened up my mind to understand how we detect gravitational waves, and so many other things it all makes so much more sense now!
@justin555666
@justin555666 11 жыл бұрын
Awesome thanks! I'll have to go and check that out.
@thegreatninjaman
@thegreatninjaman 8 жыл бұрын
what IS space though?
@thezipcreator
@thezipcreator 8 жыл бұрын
Kurz Gesagt has a good explanation on his channel
@Manibe37
@Manibe37 7 жыл бұрын
+The Zip Creator KURZ GESAGT IS LOVE KURZ GESAGT IS LIFE
@sparkyd7824
@sparkyd7824 6 жыл бұрын
Space is created when someone sneezes and farts at exactly the same time.
@Mr51seer
@Mr51seer 10 жыл бұрын
because everyone puts cats on a leash
@MK-qh4jp
@MK-qh4jp 11 жыл бұрын
Please keep these videos up! Please.. Please.
@Liv55555
@Liv55555 11 жыл бұрын
This is the sort of question I didn't realise I wanted to know the answer to. Thank you for explaining it!
@musiccat9513
@musiccat9513 9 жыл бұрын
I AM THE 1 MILLIONTH VIEW!! OMG!* *No one cares, MusicCat.
@sen7859
@sen7859 7 жыл бұрын
hey i do care :)
@jeromealday614
@jeromealday614 6 жыл бұрын
You clearly messed up in making the text *bold*
@ImpakaWarrior
@ImpakaWarrior 10 жыл бұрын
who the hell puts cats on leashes
@mindziasin
@mindziasin 10 жыл бұрын
I do..
@VixenAurora
@VixenAurora 10 жыл бұрын
I do. Cats running around loose unsupervised have SEVERELY shortened life expectancy. My Jack likes to go for walks on leash and harness. It keeps him safe and lets him enjoy the outdoors.
@GabrieleLabanca
@GabrieleLabanca 11 жыл бұрын
Very easy to follow, you're good!
@simonwakefield303
@simonwakefield303 11 жыл бұрын
Thanks. You're very helpful and good channel. Good to see more science channels to check out.
@dangflo
@dangflo 9 жыл бұрын
"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)
@felizzhappy5276
@felizzhappy5276 9 жыл бұрын
No sorry the quran copied science from the greeks
@reh3884
@reh3884 9 жыл бұрын
dangflo It also says that fresh and salt water won't mix, and that you should kill people that believe differently than you.
@3ckitani
@3ckitani 7 жыл бұрын
+RE H No, it says that there's a place where two different waters don't mix.
@3ckitani
@3ckitani 7 жыл бұрын
aslam khan no, no... "There shall be no compulsion in religion; the right way has become distinct from the wrong way. Whoever renounces evil and believes in Allah has grasped the most trustworthy handle; which does not break. Allah is Hearing and Knowing." Quraan (2:256)
@MindStrider34
@MindStrider34 9 жыл бұрын
"And it is We Who have constructed the heaven with might, and verily, it is We Who are steadily expanding it." (Qur'an, 51:47) Quran written 1400 years ago, in a middle of a desert. No technology. Word of the creator or word of an illiterate man?
@FortisConscius
@FortisConscius 9 жыл бұрын
Illiterate man. Next question?
@MindStrider34
@MindStrider34 9 жыл бұрын
FortisConscius Ok: "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). BIG BANG! Quran written 1400 years ago, in a middle of a desert. No technology. Word of the creator or word of an illiterate man?
@FortisConscius
@FortisConscius 9 жыл бұрын
Illiterate man. Next question?
@felizzhappy5276
@felizzhappy5276 9 жыл бұрын
Yea will alll know that the quran copied from the bible....... Isaiah 40:22 Thus saith God the LORD, he that created the heavens, and stretched them out; he that spread forth the earth, and that which cometh out of it; he that giveth breath unto the people upon it, and spirit to them that walk therein: This was written like 2600 years ago and there are many other verse that speak that the universe its expanding...... Im not trying to debate but i dont belive in religion...i only believe in a personal God
@felizzhappy5276
@felizzhappy5276 9 жыл бұрын
FortisConscius these religuos people treat their wives as slave
@baileyskates
@baileyskates 9 жыл бұрын
Omg I have thought about this so much. so it's nice to finally have a clear answer.
@UTubeSL
@UTubeSL 11 жыл бұрын
Brilliant! Thanks!
@arthurabraham3271
@arthurabraham3271 9 жыл бұрын
Superbly explained.. Stuff that took me many hours of thinking to understand could have been understood in a few minutes!
@Ashpower999
@Ashpower999 10 жыл бұрын
The drawings are very creative. I love this channel,
@janiselmeris5705
@janiselmeris5705 4 жыл бұрын
Thank you for clearing this up! This was something I didn't understand before. The last "the cat is off the leash" analogy is bad though, because once the cat is off the leash, there is no more force applied by the leash, but you just said that even if the space expands faster, the gravity force is still in effect.
11 жыл бұрын
I had to miss that, gonna watch it again. .)
@mouthmouth3
@mouthmouth3 11 жыл бұрын
great videos man
@ytjimmyd
@ytjimmyd 11 жыл бұрын
Thank you so much. I've been wondering about exactly this for years, and never got a good answer from a physicist.
@natecastronovo
@natecastronovo 10 жыл бұрын
FANTASTIC background music, Henry. Keep it up. Can we get a download link?
@jeffreybeitel1291
@jeffreybeitel1291 11 жыл бұрын
The "Cat" is also out of the box! hahaha Nice job!
@rye025
@rye025 8 жыл бұрын
this episode pretty much blowed my mind :O !!!!!
@99thTuesday
@99thTuesday 11 жыл бұрын
This gave me the last piece in the puzzle I was having on rationalising the number of stars in the sky for myself. Thanks.
@Damnage96
@Damnage96 11 жыл бұрын
Learned more from this video than 3 years of high school physic classes.
@macronencer
@macronencer 11 жыл бұрын
Yes, that sounds exactly like what I had in mind! Let's hope it becomes more common as a way of doing things...
@Apwolsopcjrhei
@Apwolsopcjrhei 8 жыл бұрын
This is what I was thinking about yesterday
@sadieandbean
@sadieandbean 7 жыл бұрын
This helped me with my homework, thank you
@drawingboard82
@drawingboard82 10 жыл бұрын
Very good explanation, thanks. Also worth noting that whilst EM force holds molecules together (ionic and covelent bonds etc.) it is the "Strong nuclear force" which holds atoms together. This force is orders of magnitude stronger than EM but only works across quantum scale distances. It is the reason why positivly charged protons can be packed into a nucleous without being repelled by each other. It is also why atoms with large numbers of protons are unstable. Even if space expanded fast enough to rip molecules apart it would need to expand much faster to rip atoms apart. :-)
@Nfinch1992
@Nfinch1992 11 жыл бұрын
This makes so much sense now, I always wondered why universes didn't collide more often with this expansion thing.
@jarahatkeify
@jarahatkeify 11 жыл бұрын
Your explanations are lucid.
@cdr0
@cdr0 11 жыл бұрын
I really like minutephysics and its videos. Please henry try to increase the frequency of video posts.
@mkannan
@mkannan 11 жыл бұрын
Thank you. I learned something new.
@counterpicky
@counterpicky 11 жыл бұрын
I thought this was a thing! Great explanation
@TheJpaisley
@TheJpaisley 11 жыл бұрын
Great video :)
@adicakes
@adicakes 11 жыл бұрын
that's something i didn't know. thank you
@aurelia8028
@aurelia8028 3 жыл бұрын
Finally an analogy that actually makes sense!
@Synthenist
@Synthenist 5 жыл бұрын
the only youtube channel where I aint forced to double the speed of the video^^
@Cheesebane
@Cheesebane 11 жыл бұрын
You can tell from the spectrum (graph of emitted light intensity over the light wavelength) of a distant light source (e.g. a star). Each chemical element or molecule in the star absorbs and emits some very specific wavelengths (absorption/emission lines) when it is sufficiently energized and leaves that pattern of peaks and dips in the spectrum. If you recognize the pattern of some substance you'll get the redshift by measuring by how much the pattern was shifted along the x-axis (wavelength).
@bluberry371
@bluberry371 11 жыл бұрын
when i watch 15 minutes of these videos i feel like ive learned as much as i would in 2 hours of school
@skepticwung118
@skepticwung118 11 жыл бұрын
Good stuff
@kimarnina
@kimarnina 11 жыл бұрын
this video made me interested to space science and stuff
@terryhabchi9303
@terryhabchi9303 11 жыл бұрын
awsome dude explains alot ive just found physics you explain it well im 47
@little-lamb-learning
@little-lamb-learning 10 жыл бұрын
awsome
@SpaceAndStarsGalore
@SpaceAndStarsGalore 11 жыл бұрын
I love you Henry
@sqnyster84
@sqnyster84 11 жыл бұрын
Thanks, this always bugged me :)
@Wesleigh123
@Wesleigh123 11 жыл бұрын
His voice is soothing. :D
@poorshot1
@poorshot1 11 жыл бұрын
Mind... Blown
@PhecdaPlato
@PhecdaPlato 11 жыл бұрын
During phase-conjugate mirror via stimulated Brillouin scattering, generate the laser beam at 308 nm to pump a Raman cell. In time, an out come is Forced Oxidation.. After magnetosphere is weakened. (Weakening Gravity) Rayleigh scattering is a good approximation of the manner in which light scattering occurs within various media for which scattering particles have a small size parameter.
@tonyspilotro2598
@tonyspilotro2598 10 жыл бұрын
Each metre of space around us is expanding by about 2x10^-18 metres per second (using Hubble expansion of 70km/Mparsec). That's similar to the distance the weak force acts at.
@Pooua
@Pooua 10 жыл бұрын
It's an interesting idea, and I wondered how it played out. The space at every point around (and in) us is expanding, along with the rest of the Universe. So, it looks like we are dragged through this expanding space, held together by the electromagnetic force.
@AlexOjideagu2
@AlexOjideagu2 10 жыл бұрын
The effect is tiny on a galaxy scale, it is almost zero. So the space inside atoms isn't really expanding at any measurable rate.
@ObjectsInMotion
@ObjectsInMotion 11 жыл бұрын
Base energy (Zero-point energy is the official term) stays at a constant amount per cubic meter of space, and some say it's one of the fundamental constants of our universe. As more space is created, the total amount increases, but the energy in a certain area remains unchanged.
@DiabloDBS
@DiabloDBS 11 жыл бұрын
I meant photon, not sure where i got that "r" from. And sorry that i didn't answer your question, i somehow got it mixed up with another question. As far as i understood the frequency shifts, they occur because light or better photons travel(s) at a constant speed (through empty space). So if you apply any motional energy to them they cannot accelerate or slow down. But their frequency can change and thus any motional vector will be applied to either increase or lower their frequency.
@James01100011
@James01100011 11 жыл бұрын
thanks sir! Was trying my best to explain but we were going off on some strange tangents.
@eldenfindley186
@eldenfindley186 11 жыл бұрын
I think it would be cool to see a video on Chaos. Order and disorder are interesting topics.
@Zazz30
@Zazz30 11 жыл бұрын
It depends on the distance. The separation between two objects doubles over a very long time. When short distances double in a given time, that's not much of an increase and can be considered slow. If a very large distance doubles in the same time, that's a massive difference and is much faster. Scale that up and you can gets speeds that are faster than light, but on small scales it's immeasurably slow.
@opinionateddrone
@opinionateddrone 11 жыл бұрын
Can you do a video explaining why and how the atoms in solid objects stay together?
@No0bT4rD
@No0bT4rD 10 жыл бұрын
the concept of space and how it relates to us and the universe is very hard for me to grasp x) and im atm in my first year of the hardest university level education you can get in sweden. (it's an education in engineering, physics and mathematics. i can basically become whatever i want - a scientist, computer engineer, astronaut. just no big shot wall street guy ;D)
@BeingSamSince85
@BeingSamSince85 11 жыл бұрын
Interesting video
@PhecdaPlato
@PhecdaPlato 11 жыл бұрын
Adding to that, That polarization or anisotropy of the emitted light can also affect the measured fluorescence intensities because the efficiency of gratings depends on polarization. So .. The "Cat" is almost like "Schrödinger's" cat..
@PanagiotisLampropoulos
@PanagiotisLampropoulos 11 жыл бұрын
All about forces positives and negatives have the power attract the things at the side which is more effort than its opposite.
@protocol6
@protocol6 7 жыл бұрын
If anything, we are shrinking due to time dilation/length contraction caused by gravitational collapse as local mass density in overdense regions increases.
@jareddavidson3010
@jareddavidson3010 9 жыл бұрын
What is there for space to expand into? For example like a flash drive, flash drives have memory and once that memory is used up it can't fit anything else onto it. Either space hasn't used up its memory or something is getting deleted out of space for it to grow more.
@Cheesebane
@Cheesebane 11 жыл бұрын
In other words: assuming that distant light sources consist of the same types of matter we know on earth, certain prominent patterns in their spectra are most easily explained by interpreting them as somewhat redshifted.
@Zazz30
@Zazz30 11 жыл бұрын
Even though the window would be floating with nothing holding it in place, the window's mass gives it momentum. Momentum is what makes it difficult to change an object's speed and direction, even if that speed is 0. So when the brick hits the window, the window's momentum helps to keep it in place and the brick can smash through it. A window on Earth it's still floating in space, it's just sharing momentum with the planet it's attached to.
@nanodonna4122
@nanodonna4122 9 жыл бұрын
That's a relief. all time travel movies would be wrong if we expand with the universe. If you travel back in time you might be a giant O__O
@pixair
@pixair 11 жыл бұрын
Thanks
@DiabloDBS
@DiabloDBS 11 жыл бұрын
The proton losing potential energy is only one cause for the red shift and as far as i know may occur when a proton gets in contact with matter. Google Raman scattering if you want to know more about it, while it's something you can see with your own eyes everywhere it still might be interesting. But in the case of expanding objects the cause for the shift should be the Doppler-effect which you can also experience when an ambulance passes by, maybe you find an interesting article explaining it.
@Zazz30
@Zazz30 11 жыл бұрын
It's an optical illusion caused by the way light scatters through the atmosphere, so you can't ever reach it. It's also actually a ring, so there is no start or end to it. The ground just gets in the way making it look like an arc.
@BlahLab
@BlahLab 11 жыл бұрын
The little add in that the leash is stronger than the force of friction made me unreasonably happy
@ObjectsInMotion
@ObjectsInMotion 11 жыл бұрын
Well because it's the base energy of the universe. Just like when a book fall of a table, it looses some potential energy which is used up in the form of heat and sound. But when it's on the floor, it still has potential energy, it's just that there's no where else lower to fall to, and so the book will never convert that potential energy to heat and sound. Dark energy exists evenly everywhere, to actually use that energy there has to be a location of even lower energy for it to "fall" to.
@arlenokstar
@arlenokstar 11 жыл бұрын
Well, the "hack" (sic) that came up with the Expanding Earth theory was actually someone that provided us with one of the most groundbreaking theories. His name was Charles Darwin, you might've heard of him. Another guy named Nikola Tesla also had a similar thesis although his was a little bit more extravagant.
@Zazz30
@Zazz30 11 жыл бұрын
Infinity isn't like a 'last number' than nothing can be bigger than, it's a statement that there is no limit - there is no last number, you can always go higher. There are an infinite number of infinities that are infinitely bigger than each other.
@ObjectsInMotion
@ObjectsInMotion 11 жыл бұрын
He said that because we aren't sure whether or not time exists, and because the expansions of the universe is dependent on time, its all a matter of opinion whether or not the universe is expanding, or some crazy shit like that.
@karenwang7826
@karenwang7826 11 жыл бұрын
I have a comment to the last sentence you said: Thats true but the electromagnetic force between the protons and electrons are stronger than the force that is pulling them apart since they are rather close because of the size of the atom
@Zazz30
@Zazz30 11 жыл бұрын
It's a matter of semantics, but I agree that bit is confusing. He was trying to point out that everything in the universe as a whole isn't "scaling up at the same relative size [so] it would seem like nothing has changes". Two of the components that the universe is made out of is space and matter. Basically space is expanding, but matter isn't necessarily.
@agiar2000
@agiar2000 10 жыл бұрын
It reminds me of my pet electron at 1:07! The only problem with my pet electron is that I lose track of where it is every time I figure out how fast it's moving! :D
@TheShamansQuestion
@TheShamansQuestion 9 жыл бұрын
Do we know at what rate space expands? Is that a legitimate question? Love the music!
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