Why Physics Can't Totally Explain the Universe's Expansion | SciShow News

[@militantpacifist4087]

Because they have to pay for the DLC and for micro transactions.

[@dominic2446]

what is DLC?

[@TheDeuceofSpades]

Need more RAM

[@GratiaCountryman]

Dominic Lee Downloadable Content.

[@JorgetePanete]

@ IT'S*

[@JorgetePanete]

@ SPORTS,*

[@Im-Not-a-Dog]

The universe is expanding to make room for Muscle Hank. Boy’s been bulkin up.

[@General12th]

@@DougOfTheAntarctic Did you want a hard answer?

[@oldgreggsgardentherapy]

The guy has ulcerative colitis. He would need to take steroids to treat this condition some times. Maybe lay off? 😚

[@MatMabee]

@@oldgreggsgardentherapy You chill, nerd.

[@nabeelkhan7506]

I'm a new subscriber and I never understood how this pun started. Would you care to explain????

[@Im-Not-a-Dog]

Nabeel Khan Basically someone made a “Muscle Hank” profile to be the antithesis of Actual Hank. Hank is skinny, Muscle Hank If buff. Hank is highly intelligent and seeks to educate the world, Muscle Hank leaves silly and irreverent comments on SciShow videos. Occasionally, on videos he hasn’t left a comment on, people will make comments involving Muscle Hank because it’s like an inside joke for SciShow fans. The same goes for the Dank Hank and Hustle Hank accounts. None of it has anything to do with Ulcerative Colitis, or any other malady of the ass, as falsely implied by someone earlier.

[@azero79]

PBS Space Time channel talked about this in an episode called "A crisis in cosmology", very fascinating and frustrating stuff.

[@kefkaZZZ]

I got the impression that they came to a very different conclusion in that episode.

[@nareshsahu565]

@@kefkaZZZ Because the new paper hadn't been published when PBS made a vid about it.

[@roundearthshill248]

I talked to my doctor about the lack of expansion in my penis area and he wrote me a prescription for these dark energy pills and then my penis ripped through the fabric of my pants and found its way into the void of my wife. A little less than a year later a human being crawled from my wifes void and into the world.

[@nafrost2787]

If I remember correctly, 74 kilometers per second per megaparsec is suspiciously more than the supernovae result which is 72 or 71 kilometers per second per megaparsec, at least according to the PBS Space Time episode.

[@letsgosurfing1786]

PBS space time is great

[@timsullivan4566]

There exist two inexorable processes of expansion, neither fully understood: the universe and my waistline.

[@soonny002]

Haha. Love your comment. :)

[@360.Tapestry]

can't relate

[@timsullivan4566]

@@soonny002 Thanks - kind of you to say so.

[@help8help]

An expanding waistline is a sign that you are becoming more well rounded as a human being, and gaining a greater sphere of influence. You'll start to find more people gravitating toward you. It is also proof of time travel, at least for food calories. Perhaps you noticed as a teenager that you could eat as much as you wanted and you'd never gain an ounce. Then, as you approach middle age you eat very little and still gain considerable mass. I think this is strong evidence that your teenage body transported those extra calories through time to your present body. ; ^ )

[@LuckyMoniker]

two inevitable questions of reality...

[@ericwoytasek269]

With each passing year, setting a new record for the Kessel run becomes more difficult.

[@andrewgalloway7344]

worsened by measuring it in parsecs.

[@peterswanson3446]

Especially with the MF being shot at, crashed and smashed into 5000 objects over 60 years. Lol

[@PhilthySteel]

The great man S R Foxley should be made Honorary President of Space for life for his extraordinary contributions to SciShow.

[@pierreabbat6157]

The universe simulation crashed because of uninitialized Cepheid variables.

[@kefkaZZZ]

Oh my God so good!

[@6Twisted]

I hope they figure these things out before I die of old age. They've got about 60 years left.

[@ishtiakhossain1776]

how you so sure you ain't gonna die today, tomorrow or the very next second?

[@darrenkastl8160]

The most common mistake of a non humble person? Guaranteeing your next breath.

[@6Twisted]

@@ishtiakhossain1776 I said about 60 years.

[@MrBizteck]

Luvky bastard ..... Ive only about 40 left 😁

[@Narko_Marko]

Even if they say they have finally figured it out you can't know that. In the past they were sure about many thing but were later proven wrong.

[@crazykaspmovies]

Obviously this is the influence of The Old Ones, Cthulhu is jostling the measuring devices to mess with us.

[@ecognitio9605]

@@computerzero2681 Lol

[@freedapeeple4049]

Makes more sense than the idea that space itself is expanding...

[@RequiemPoete]

@@freedapeeple4049 Derp derp.

[@BeeHatGuy]

@@computerzero2681 no

[@OtavioVeras]

I'm very thankful to Hank Green and the SciShow team to keep teaching us so many interesting topics. Thanks for Mr. Foxley to keep supporting this amazing channel. Thanks to all!! :)

[@SrFoxley]

Me too! I love the effort they put into both the research and production quality of these videos. And thanks also to the many other patreons and channel subscribers, who in total contribute far more than I do each month!

[@Ryan-wk3mc]

I feel like those questions are the MOST important, as it allows us to approach objectivity.

Bread goes in, toast comes out, you can't explain that.

[@acetate909]

Mind. Blown.

[@pencilfriendpaperscribbler6032]

Excellent. Also, the law of conservation of energy stipulates that if you lose a sock in the dryer, it will manifest as hair in the sink.

[@billdecat855]

@@pencilfriendpaperscribbler6032 ...or tangled wire clothes hangers in your closet

[@360.Tapestry]

@@pencilfriendpaperscribbler6032 sounds more like matter to me

[@itsJPhere]

But where did the bread come from?

[@NewMessage]

They may have accidentally invented Bistromath... No matter how you work the numbers, the waiter's total always seems to conflict with the total your party came to on the napkin. Did the Cepheid eat all the Crab Nebula Cakes? 'cause I'm not paying for that.

[@apple54345]

is this like a real thing for people who regularly socialize? i've never heard of it.

[@bradywells1293]

@@apple54345 It's a reference to the hitchhiker's guide to the galaxy -- one of the best works of literature ever penned in the English language

[@raythegardener]

Totally groody. So is there any way for me to use this failing of physics to get out of my speeding ticket? (Driving my Ford Prefect)

[@SifArtorias]

I hate everything about you and your profile icon >:(

[@amorstripes5288]

Thanks for the treat!

[@zedwms]

6:37 Writing papers and getting through another day at work are important, but "what is the universe?" is the only thing that really matters.

[@elwoodsherman2386]

I love the way Hank explains things way more than the rest of the cast.

[@Master_Therion]

2:44 If 74.03 (plus or minus 1.42) km/s/Mega-parsecs is the speed of expansion... How many Millenniums would it take to go less than 12 parsecs? Happy (early) May the Fourth.

[@gravijta936]

Only the Millennium Chicken can do that!

[@xZangHD]

Hank is the best host, his voice and enthusiasm pulls me into the video like a black hole

[@ChromeCobra420]

Caitlyn, all day long.

[@ThrottleKitty]

It's sneaking slices of cheesecake in the middle of the night.

[@TheMrAshley2010]

I think your fingers slipped. You spelled "I'm", I-T-'-S

[@mikestevens8012]

t h a t ! Is a very good idea!

[@domjayyy]

I always say it, Hanks comedic timing is super underrated

[@Jay-qb9gi]

The release of the *Expanding Universe Expansion Pack II* for more information: + buff intelligence about expansion for humans + a key for space travel Update 2020.0

[@reeee4336]

There is a bug, *It doesn't stop*

[@Jay-qb9gi]

@@reeee4336 we had countless reports for billions of years, the bug is irreversible. All you can do is use a VR mode for the rest of time, or do parallel universe glitches, but at the time this is a big one to tackle.

[@Jay-qb9gi]

@@reeee4336 for now the next big updates are 2045.9 and 2100.0. To see how are yall progressing for the next century or so, then we'll decide what to do. Removal or a Buff

[@reeee4336]

@@Jay-qb9gi decrase depression value, it's too high.

[@FanTheories]

FBI year is 2020 and your system has a virus. Please fix it before it wipes us all out.

[@SlyPearTree]

I am unable to convince my doctor that my waistline expansion is due to dark energy.

[@chrisnash3293]

SlyPearTree@ hey man. first comment to acrualt have me laugh out loud. gj.

[@TheMrAshley2010]

Obviously you need to get a new doctor.

[@mikejones-vd3fg]

its sort of true though, you can think of your consiousness as dark matter - mysterious energy that acts upon matter - the matter being your muscles that move your hand with a burger toward your mouth. No one can explain it, but its there and it has an effect on matter. So maybe dark matter is just the universe's consciousness acting on matter, like a big galactic brain beyond our time scale to even figure out what its processing, maybe thats whats going on in this universe, its alive! and expanding, it must be enjoying itself.

[@SpaceAce1993]

SlyPearTree 😹

[@davidroddini1512]

SlyPearTree actually dark matter and dark energy have counteracting effects. Dark energy speeds up expansion while dark matter slows it down. So you need more dark matter to slow the expansion of your waistline. The 1 thing we know about dark matter is that we cannot see it. So if you wear a blindfold while eating, you cannot see the food; it becomes dark matter and will slow the expansion of your waistline. At least that is my hypothesis.

[@MeloettaMarmalade]

These videos really expand my universe

[@leosefcik]

O

[@logisticsnail5014]

Asian people

[@100colinrr]

Is there any reason why the universe must be exactly the same everywhere? Could there not be pockets where the average quantum expansion is greater than other areas? So looking in one direction could appear different than another direction. And when we look at the whole sky in the CMB we see granularity that could be explained by slightly different expansion rates. The data was statistically analyzed and averaged to arrive at the 64 km/s/megaparsec number. But the other approach looked at specific cepheid variables and that data was averaged to arrive at 74 km/s/megaparsec. The cepheid data though may be looking through a corridor of space with greater concentration of quantum expansion compared to the CMB average.

[@macsnafu]

If the matter in the universe originated from a common event like a Big Bang or inflation, there's good reason for believing that the expansion would be uniform. If it is not uniform, then we would need entirely new ideas or hypotheses for explaining why it is not.

[@100colinrr]

@@macsnafu Actually it is thought that matter did not originate from the Big Bang, energy did. Matter precipitated from energy as the universe expanded and cooled enough for it to be stable. The expansion is not linked to matter in any way we have yet discovered. Based on the distribution of matter in the universe though there is no reason to believe the expansion must be uniform, namely galaxy clusters, superclusters, filaments of gas between superclusters, and vast voids. Recently astronomers have concluded from observations that dark matter, whatever that is, is neither all pervasive nor does it envelope all galaxies. So the universe is a mess. The way it works is probably also a mess.

[@Dontbeweakvato]

Maybe the universe just appears 10% faster because it is being measured.

[@willhaney96]

Please... no

[@benjaminchance3311]

like when your at work and you can kinda just feel the boss watching you so you work a bit harder to seem like your not slacking off. does this mean we are the universes boss?

[@JorgetePanete]

@@benjaminchance3311 you're*

[@JorgetePanete]

@@benjaminchance3311 universe's*

[@benjaminchance3311]

you can correct me all you want, i'm still an idiot.

[@IsilNasar]

Actually, watching this video at work does help me go through the day, so the research does too indirectly..

[@annaliseoconner9266]

I like to imagine that instead of saying SR Foxley, its *Sir* Foxley: a very well groomed red fox with a three piece suit and monocle, sipping earl grey, pondering the physics of a tea biscuit.

[@SrFoxley]

I'd be more at home in a captain's hat on the quarterdeck of a tall sailing vessel, and with a spyglass instead of monocle, but you're not far off. You got the well groomed red fox part right. ;)

[@lifethetragiccomedy2889]

Can we do a video on who SR Foxley really is?

[@remkoburger6595]

As far as I understand, every measurement method eventually falls back on the Hubble Constant, because you have to measure light. If the incoming redshift tends to shift a tiny fraction over a distance more than a lightyear, we won't have any clue, because we don't have any other method to calibrate it to, right? That would mean our total understanding of the expansion rate of the universe might be flawed. (Please correct me if I'm wrong) The other method to determine distances in space is gravitational waves, but, as being said in this video, the method is too young to draw any conclusions from. I can not wait to see what those conclusions will be.

[@bobobobo-nj9yg]

Agreed! Also I think the redshift of light over long distances could be due to multiple variables which we haven't yet taken into account, not just expanding space. The Great Attractor and the uniformity of the cosmic background radiation also need better explanations. Hopefully we can a better understanding of this stuff in our lifetimes, we'll see!

[@orangejoe3864]

The best part about science as a whole is, that every answer only leads to more questions :)

[@LittleTreeBlue]

Ok this would have to be much longer for me to understand what’s happening. You really charged through that whole Cepheid thing! Why do these objects change in brightness, and why is it regular? - I’m sure I’d have more questions but I was still thinking about Cepheids when you got to the ripples that don’t interact with light or something and now I have questions about that... you don’t have to make these short, you know. I’m pretty sure we’d watch them even if they were longer. I would.

[@TheEVEInspiration]

Maybe there are two kinds of gravity that act differently on regular- and dark matter? In most cases we would see the aggregation of their effect, but in extreme cases they might diverge. A bit like the other forces in nature that only became distinct at various times during the cooling of the universe as it expanded.

[@bleep8048]

This stuff does help me get through work tho, I love just spurting science facts to get through my day

[@tjthrash0143]

This may seem stupid... but perhaps the actual expansion is producing gravitational waves that interfere with each other distorting our perception of far off objects ever so slightly... Maybe?

[@nafrost2787]

Gravitational waves are produced by acceleration of masses, I don’t think that the expansion of the universe does this.

[@tjthrash0143]

@@nafrost2787 You may be right. However I would argue that masses affect spacetime with a... Let's call it negative... Bend. A warping affect when they move this causes the "negative" waves. Would not the production of more spacetime have the reverse or positive affect?

[@nafrost2787]

The masses don't move on an epxanding spacetime, you can think of it like dots on a balloon, the dots don't move, but the space between them expands. I don't think I completely understand your point, but from what understand, you're saying that the expansion of space dispartes the warping of spacetime caused by masses in it. This would not have any effect on anything, because: a. The very present of mass will always create the same amount of spacetime warping, regardless of that spacetime's expension rate. b. you don't need the spacetime to expand itself to dissparce the spacetime warping of the mass. even in stationary spacetime when the spacetime warping of the mass covers more and more spacetime, it just dissipates.

[@craigmckinney2219]

We've heard this before but I haven't heard you mention the problem of paralax. Postulate an infinite balloon. draw 2 dots on the lax surface. Add x amount of air the points are 2 inches apart. Keep inflating. At some point, add 2 points near you. When the inner points have moved 2 inches the outer will move much farther eventually orders of magnitude farther. They will seem to move faster and faster although the expansion is constant. Simple geometric progression. I remember an mass ejected from a supernova that seemed to move FTL. They finally decided it was coming directly at us at nearly light speed. thereby compressing its light trace to seem to be FTL. The opposite effect of what I am proposing.

[@endrankluvsda4loko172]

I really think there's a reason space is expanding and yet "empty" space isn't getting warmer even though stars are putting out all that energy. I think all empty space has all the super positions of matter that can exist there since it's not being observed, kinda like that old slit experiment with the light behaving as waves unless it's being observed. As stars decay, they're actually creating more empty space so everything seems to be moving away from everything else.

[@coraldelaluna]

Nice PSA at the end👏🏼

[@tachrayonic2982]

What if the Universe isn't expanding, but the stuff inside of it is slowly taking up less space? Of course, the effects of relativity make it extremely difficult to say a "constant" is changing throughout the universe. Events that appear to be simultaneous from one perspective do not appear so from all (relativistic) perspectives, so you can't assume that a "constant" is the same everywhere in the current Universe. Likewise, the flow of time throughout the universe is not constant (Higher concentration of energy/mass -> less flow of time) so you would expect those areas to show differing progress as far as changing "constants". I'd personally like to understand how different the Universe would look from different relativistic perspectives, particularly things like the size of the observable universe and the change in the rate of expansion over time.

[@gregoryfenn1462]

A question about dark matter: I get that it’s basically “stuff” that interacts with the gravitational field, but not the other fundamental forces. But why do we think there is only one kind of “dark matter”. We have many kinds of matter (up quark, down quark, electron, neutrinos etc) and the way forces work on these all differ. So maybe the dark matter come in different forms. I can imagine an initial large amount of dark matter accelerating the early universe, then being weakened by some kind of opposing dark matter (dark anti matter?), and then the other stuff bounces back in a kind of cyclic way. For all we know in another 20 billion years the universe will start expanding at a slower rate again for a while. Basically I’m just confused why we believe in only one kind of dark matter, and we we seem to think it must obey analogous laws of nature that other observable particles do

[@ewout256]

Gregory Fenn As far as I know we don’t assume that there is only one kind of dark matter, there basically is no consensus at all at the moment. Scientist have looked into many different options for dark matter (brown dwarfs and other dim massive objects, molecular gas, ... There’s even a theory that Newton’s gravitational law would need an adjustment on galactic scales, the scales at which basically the whole need for dark matter arises), but so far none have been able to fully explain the measurments. There could very well be other factors in play as you mention, but we’ve only been able to disprove wrong options, not find right ones.

[@TheZenytram]

your confusion is due the fact that DARK MATTER is a DUMBASS name, there is no matter here, the thing called "dark matter" should be called DARK GRAVITY. the concept of matter is so vague that you can include or not photons or any boson in it,

[@paulleader9532]

Dark matter is basically the sum of matter in any form that cannot be accounted for. Bare in mind that currently we can only see objects that radiate some form of energy over large distances.

[@specialk5548]

The universe spins like a record on a record player, we are crumbs on top starting from the middle moving outwards, the more we move outwards the faster we all go. That's why it seems we are expanding faster and faster.

[@buckanderson3520]

I think the super massive black holes at the center of galaxies drive expansion. They fall in on themselves from all perspectives or fall away from everything. Because they are accelerating away in all directions they don't move but everything else does except things caught in their gravity which fall towards them in an orbit.

[@omsingharjit]

I was right , Expansion of the universe it should be uneven in different direction of the universe i did concluded this based on my Theory on dark energy and later i found that European Observatory have observed this unevenness in sky observation . I also have some other prediction related Dark energy expansion . One is expansion rate should be faster between two massive clusters with distance greater then its gravitational attraction .

[@Glitch_Online]

Questions.... How do Scientists actually measure galaxy/star light moving away? i get the principle, but wouldn't the light change be so insanely small? can't we attribute a change to say... the atmosphere? Space dust/nebula/clouds of gas?

[@scientistsbaffled5730]

They're lying dude

[@wasabi42]

the idea of literally nothing existing in the universe except for that one speck of matter that started it all is truly mind boggling to me. did our definition of time start when the universe started expanding? did time stand still before then?

[@troyyoung8167]

If only as much time was spent hammering home the fact that the two teams measured two different things as was spent measuring uncertainty.

[@ashyosings5089]

What if the great attractor isn't attracting anything it's being pushed by the expansion of other "big bangs" but in a 4 dimensional fashion assuming space is a separate 3 dimensional object in itself. If place the speed of light to be a variable depending on how the big bang works and so forth explaining cool spots etc Just a thought of mind, anyone got numbers to disprove This?

[@EpicDeception]

When you put it that way is it really expanding though? It's not like if you have point a and b which are fixed in space, and their distance is 1 meter, it won't become 2 meters over time right? It's just that celestial bodies are getting further apart, right? Is space really stretching or are things just getting further apart by just floating away on their own.

[@sanjuansteve]

The natural first (Occam’s) assumption to explain how or why a particle like a photon (or electron, etc) might behave as an uncertain location particle while also like a polarizable axial or helical wave ''packet'', given that everything in the universe from electrons to solar systems are in orbit with something else pulling them into polarizable axial or helical apparent waves depending on the orientation of their orbits as they travel thru space, and given that we know we’re in a sea of undetectable dark matter but don’t know where it’s disbursed, is that they’re in orbit with an undetectable dark matter particle pulling them into polarizable axial or helical apparent waves as they travel where the speed of their orbit determines the wavelength and the diameter is the amplitude which would explain the double slit, uncertainty, etc. No? Could the wobbly loop of strings actually be the traced orbits of photon/dark matter pairs?

[@kefkaZZZ]

“Starboy!!! And the Captain of Outer Space!” -Home Movies Every time you say “President of Space” this is all I can think about.

[@wonderingjibril1210]

So I think the real question is what in the world is expansion of the space filling? Yes is increasingly growing which makes sense if it’s some type of limitless amount of material or elements pushing forwards constantly creating new elements that make more new elements. But what is it filling because it’s pushing “outwards” so it’s actually filling up some type of space. So it can possibly be pushing some type of other matter or element farther out and that’s why it’s changing its speed sometimes slightly. What was here before the events occurred that caused the formation of the first materials of this universe to begin to actively form? And what caused this event to happen? These are the questions that I wonder most of the time. And also it’s OK if the calculations are not accurate you have to realize all these terms that we use were originally built on something that wasn’t accurate at all but made the foundation for something more advanced to come later. That’s the great thing about knowledge it’s ever-growing topics and it always leaves room for improvement. And that’s how it should be; if something stayed absolute it would never be any room for change or developments. This is a fascinating video to see because lately I’ve been wondering as I was looking at some of the pictures that NASA has of different planets and stars how we would judge or pinpoint a relative horizontal or vertical plains of the universe such as which way is up and which way is down. To try to see which way or direction the universe is expanding by the shadow of each planet stars and galaxies if possible. It’s funny because everything casts a shadow when it’s by something that radiates enough light and by pinpointing shadows in enough places and synchronizing that time until we collect enough data that can be tracked may be we will be able to get an active direction about which the shadows fall i different regions that may match up with each other. I really hope that more research is done on this .

[@xthe_moonx]

its black holes and einstine-rosen bridges! black holes warp space-time so much that it folds in on itself, creates a E-R bridge where the other end of the bridge ends up as far away from matter as it can, as if its repelled by matter, and the space folding in on itself gets pushed through the bridge and expands out the other side of the bridge, expanding the space between things like galaxies(matter). conservation of energy doesnt matter(no pun intended) here cause empty space is whats growing(expanding). yeah!

[@Starfals]

This is amazing, and the things people find out about the cosmos. From the first person that calculated how the earth is moving around the sun and not the other way around to this.. How can you not get a boner for humanity? :D

[@pencilfriendpaperscribbler6032]

Not cepheids, cephalopods. Admiral Ackbar would have something to say about that.

[@disruptivetimes8738]

Dont listen to him, its a trap!

[@JakeobE]

ALLAH ACKBAR *Big Bang happens*

[@honkatatonka]

OK. I don't get it and maybe I missed it. But looking at the CMB would tell us how expansion was then and cepheid measurements are looking at "younger" data, so it would mean that expansion is increasing over time. What am I getting wrong here?

[@auri1075]

"Why are these numbers are so different?" edit: its in the description, they thought one phrase and in the middle of the sentence they thought another way of writing it putting two are's...

[@mikemower1939]

Back when light began to be shed on this topic over a decade ago was when I highly began to doubt what we're taught about distances and sizes of everything out there.

[@avmtg3549]

You can't tell us knowing how the universe works wont get us through our next day at work... Thats all we have!!

[@holz_name]

What I find fascinating is that we are wrong just about 10%. That means that there isn't any super civilization out there that is messing around with the universe. To predict and to measure the expansion rate of the universe we are observing pretty much everything out there. That means that there isn't any super civilization that is moving around galaxies, exploding stars, creating black holes or harvesting dark energy. Maybe there are some civilization out there that is doing that at a much much smaller scale, but there isn't any super civilization that is doing that on a grant scale to affect the universe as a whole.

[@lukerarock]

i just love this dude

[@rnelson1415]

You guys, space is just so cool!

[@thesuccessfulone]

Each frickin second the expansion changes the distance between us and Cepheids making our calculations wrong every time.

[@SmallishPants39]

How do researchers deal with the time element when calculating expansion speeds? I feel like all of the layman-type explanations leave out the problem of having measurements in different timeframes. The common explanation is that the redshift of more distant objects is greater than closer objects therefore expansion. But further away also means older, so how can you determine relative speeds from measurements not taken in the same relative timeframe? Why is it wrong to conclude that red-shift is increasingly greater the further we look into the past, therefore the expansion is slowing?

[@myessyallyahcbssjr9618]

Tuolome river reminds me of my friend Brian tuoey who wanted to fight me in eight grade because I was horsing around and hurt him on accident. He wanted to fight after school. I met him and told him I didn't want to fight because I didn't mean to hurt him in the first place and apologized for the accident. The next day he was still one of my good friends. I don't mean to hurt people and I don't understand people who do. Brian tuoey was fortunate not to be in the car accident I was in. Nobody apologized for that nor was i compensated. I've been penalized for my back problem though like I caused it when I've never been hit hard enough since then to have caused it, but when I was poisoned in 2003 and In 2006 in 2008 and in 2016 each time it got worse. 2016 was the most disabling event of my life. And the worst tragedy I could imagine. Except that it still is happening as there has been no closure that I've found. My country seems to be addicted to stealing from me. That's the biggest surprise. I never thought that justice would die or be so downgraded in my lifetime. But it has been. That's all I've been allowed to see. I never owed a thing except to try my best to father hope. But hope no one person could ever garentee on his own or even with all the help of those currently living. Hope is a long way away and all kinds of shot can go wrong. Just like my accident at ten years old. I wish it hadn't happened but I still hope for the best life I can manage. I am not happy alone. Allah is not meant to be all one its a push out and expansion its a spreading of life. Trapped in a prison since 6 16 2016 is a fate I didn't deserve. Its been a prison because in surrounded by people I can't trust and with being so robbed I've got no escape from. And yes my life is one I wish is not lived because of hope dying in December 2017 and remaining dead ever since. I alone can't raise the dead. It would take like a 77 generations to raise hit from the dead and at least one woman alive right now I could trust. I don't think I have met her yet. If I did then I missed her name. Because she wouldn't of hid so long from me if I could trust her. I couldn't imagine one reason why she would if she could be trusted she wouldn't of robbed me. I don't like the way my life's made me feel. Its the thieves that hurt me the most. I always do everything I possibly can for a reason that i can justify if any God were to show up knocking on my head asking questions.

[@tantalus5370]

What if since the universe started as an infinitely dense one dimensional point it actually imploded creating a 3 dimensional representation of a one dimensional space. Then everything that was gravitationally bound would be scaling down into that one dimensional space giving the illusion of expantion.... I've always wondered if something like that were possible, we would see it as expansion, and dark energy would just be gravity persisting from the one dimensional plane...im probably wrong

[@ardentdfender4116]

The distance from home to work on my commute is still very much the same.

[@sent4dc]

Theorists thought about it long and hard and called it, the "Dark Expansion" .... because, why not?

[@lassoatrain]

LoL

[@Chaos------]

Everyone: We know everything The Universe: Yeah...about that.

[@aitchpea6011]

Dammit, now I'm confused again. I used to wonder why, if the further away (and thus the further back in time) you look, the more redshifted objects were (and thus the faster they were travelling away from us), scientists concluded that expansion was accelerating when the logical conclusion should be the opposite. Then, recently, I had it explained that the redshift was not because the stars further back in time were going faster, but instead because of the stretching of the intervening space, which was increasing over time (the expansion of the universe) and so, stretching the wavelength of light. The further away the source of light, the more stretching happens and so the greater the redshift. I accepted that, though I wondered how they could tell the difference between redshift from one cause versus another, but I trusted the explanation because it's accepted by the science community. Now you tell me that more distant objects ARE in fact travelling away from us faster. Or were, because we're looking back in time. Sooo expansion is slowing and the big crunch is back in play? Or what? HELP!

[@Ni999]

The expansion description hasn't been rigorously treated in popular accounts. This may help, from Sean Carroll - www.preposterousuniverse.com/blog/2015/10/13/the-universe-never-expands-faster-than-the-speed-of-light/ And hopefully this will help with the story from this video - www.forbes.com/sites/startswithabang/2019/05/03/cosmologys-biggest-conundrum-is-a-clue-not-a-controversy/#52c9916f78ea

[@three6nine992]

The Universe must be expanding "into" something, if there was "nothing" outside the Universe the Universe couldn't expand.. There has to be a reference point to model the expansion, you can't make an accurate model without knowing the medium the model takes place in.... As an analogy, the explosion from the detonation of a stick of dynamite would have have different expansion characteristics depending on the medium the explosion took place in.. Such as in water or in the air or in the ground...

[@supercommie]

There could be another explanation. The cosmological constant can be changing. The expansion acceleration due to dark energy could be itself be accelerating.

[@believeinpeace]

Fascinating!

[@headcheesefry]

Don't judge, I have a hypothesis. What if matter is shrinking at a constant rate? Would that answer any mysteries like expansion, dark energy, dark matter, or redshift? If i were a physicist with a supercomputer and the wherewithal to use it i would run some simulations or something and probably get the exact answer i would expect. Maybe it's never been looked at that way.

[@Dyslexic-Artist-Theory-on-Time]

What you need is a new theory!

[@thstroyur]

The theory is fine - try a new _model_

[@juniormynos9457]

This was explained in PBS Spacetime few weeks ago

[@BigNewGames]

I know what is causing space throughout the universe to expand. With that said, I was able to predict that the Hubble constant and lambda (cosmological constant) will be found to be in error, especially noted with galaxies found to be positioned the same distance away from us. I also found an error in Einstein's field equation. It is missing a very important variable.

[@RPKGameVids]

I'm feeling an expansion in my underpants right now, but I'm not really sure what's going on.

[@RPKGameVids]

@Toughen Up, Fluffy Yeah, it probably is, it does smell a bit.

[@PhilippMehr]

Two questions: is new spacetime created in that process or is staff just flying appart? A billardtable isnt eypanding, only the balls are moveing away from another and have high density at the beginning. When everything is moveing awa from each other, dosnt that.mean, that the universe cant be spherical, because at one point of that sphere, things should move towards each other? So its either flat or negaitvly curved?

[@kennethaxe218]

The Red Jelly Theory ( proposed by A.Z.London ) suggests the accelerating red shift is the hallmark of a pulsating universe and that it is only in its early inflation phase.At some point the red shift will slow to its maximum value and then deminish back to zero ,this will designate the maximum size of the cosmos. From this point it will begin (like Picasso ) it's blue shift phase as the cosmos deminishes back to its former more compact volume and this can be tracked by the blue shift of absorption lines in the light spectrum..So in this indemic cycle blue shift will follow red shift will follow blue shift in an eternal cycle as the universe pulsates (thus preventing stagnation in the heavens) in a time period yet to be established. Sadly this throws a spanner in the works for calculating the age of the universe (soss Coxxy .....er .. Sorry Professor Cox ) The 'Big Bangers' may need to reconsider Nebular Theory and a more finessed origin to the universe as it rolled into existence ... like mist on the sea... and from which clouds the stars were (and still are) born.This pulsating phenomenon Azl named 'Winnie's Wave' to honour his and all mums everywhere and to the glory of Yahweh the creator of all.

[@henrytjernlund]

Time. What if time is not as consistent as we think it is? Yes space-time is linked together according to our understanding. You can't change one without changing the other. But, it's obvious that time is somehow different, no matter how connected it is. Perhaps there is some mechanism that has an effect on time without it affecting space. Maybe a small effect. Maybe the coupling between space and time isn't as perfectly solid as we think it is. Maybe there is some wiggle room where one can change, even if very slightly, and not th other. A tiny bit of cushion-ness in the space-time fabric.

[@yuriyashurin1629]

Please do video about pulsar based navigation

[@mchinZR]

They aren't very good standard candles though....

[@Kibaoftheleaves]

Stupid question, but is it possible they forgot to take into account for the stars being in different places than they appear due to how long it takes their light to reach us?

[@KittyBoom360]

The expansion is not relative to anything. That means it's also shrinking, depending on your POV. As we shrink, we see everything as expanding.

[@broomemike1]

Hmmm... All the galaxies and solar systems would have to be shrinking, also. The expansion of the universe is relative to local neighborhoods.

[@KittyBoom360]

@@broomemike1 Correct. The expansion of nonlocal space is relative to local space and the shrinking of local space is relative to nonlocal space. However, it's a mistake in logic to extrapolate an absolute expansion or shrinkage without an external metric.

[@broomemike1]

Most metrics are not external to the space they describe. Even with a larger space to embed the local and non local universe in, we still would only know how the three are changing relative to each other, right? My topology is a little rusty... It's been a few years since grad school

[@Am717171]

High thought but if we spun up a live geo located simulation of the microwave back ground in Vr - would it move faster then the day?

[@animeshrine]

The hypothesis that the Fine Structure Constant is not so constant might indeed be true.

[@justincase5948]

Key here is neutron decay time. We have to solve the mystery, maybe oscillation.

[@RequiemPoete]

Weird question. If Stars are moving and are so far away their light is out of date. Is there a map somewhere that shows the stars where they should be right now vs how their out dates light indicates?

[@JosephGallagher]

The heartbeat of the Cosmos

[@BoDiddly]

Why did they only measure Cepheids from the large megalanic cloud? Since not all galaxies are moving away from every other galaxy (note: The Andromeda and Milkyway are moving towards each other and towards some unknown great attractor ), shouldn't they have used a wider variety of galaxies for their measurements?

[@TitanUranusOfficial]

The universe isn't expanding, we're shrinking!

[@pedrolmlkzk]

It's horrifying that this statement can actually be true

[@TactileTherapy]

according to einstein, those are essentially the same thing.

[@TitanUranusOfficial]

yup, I was actually thinking of a time travel story I read years ago where objects brought forward from the past were much bigger, relatively, than they had been at their point of origin. It was a bit of silliness, but the scientists engaging in Time Travel were shocked because they expected, if anything, for the objects to be relatively smaller "due to the expansion of the universe in the meantime" lol.

[@joemomma7148]

I’ve figured it out. We don’t know everything!!!

[@broomemike1]

Not yet! That's next week!

[@X-Gen-001]

Maybe expansion is cyclic in nature rather than constant acceleration. The younger the universe, the faster the hubble constant is. Going back to the "Big Bang" inflation was infinite. Conversely as the universe gets older, the cycles of inflation occur further apart until the universe's entire energy density reaches a hydrostatic equilibrium, rather than the so called "Big Rip" which is what is expected based on current observations. But that could be wrong, if what I just explained is right, that the hubble constant is variable. The acceleration is possibly just the second cycle for our relatively *very* young universe.

[@lucidmoses]

Maybe variations in time or the speed of causality could account for it?

[@chrisc1158]

Could it be that everyone continues to model the universe with a purely elastic space-time? We only use localized data sets to model the entirety of the universe and wonder why we keep getting it wrong. Modeling space-time as a fluid membrane would allow for local geometry to remain almost purely elastic, while also allowing for other scales to act differently. Dispersion, displacement, cavitation, and buoyancy could go a long way in explaining what is going on out there...

[@aimii7881]

Chapter ath-Thaariyaat of the Qur’an also seems to allude to one of the most imposing discoveries of modern science, the expansion of the Universe. “I built the heaven with power and it is I, who am expanding it.” Qur’an,51:47 The expansion of the universe was first suggested by the general theory of relativity and is supported by the calculations of astrophysics. The regular movement of the galactic light towards the red section of the spectrum is explained by the distancing of one galaxy from another. Thus, the size of the universe appears to be progressively increasing.

[@dgray7537]

Remember how confident BICEP2 was? Solo papers should always be taken with a mine of salt.

[@fastfiddler1625]

I was spacing out during some of that.

[@proteusaugustus]

The universe is an M-brane(U); not, a P-brane. It is accelerating because the void beyond view has mass/energy. The farther the mass/energy in the visible universe(u) gets closer to such mass/energy, its pull increases. U(m:E) >> u(m:E).

[@daywattly]

I don’t understand, this seems like a very easy thing to solve with the Hubble telescope. If space is expanding you would see galaxies with lateral movements over time along with the standard candles; you should be able to calculate the expansion just from visual conformation.

[@who-man7699]

I could be wrong but did that mean the it's speeding away at the speed of gravity and I know I'm wrong but I still like stuff like this

[@odan49ak47]

Dark energy you say " laughs very maniacally" do tell

[@StuMas]

How long before the most distant, observable galaxies start to disappear, due to the expansion of the universe?