What is the GREAT ATTRACTOR? Will It Absorb us? What's DARK FLOW?

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CHAPTERS:
0:00 Motion is relative
2:35 Gravity's influence
4:59 How we theorized the Great Attractor
8:20 How we solved the mystery of Great Attractor
10:00 Great attractor is also being attracted!
12:19 Will we be absorbed or destroyed?
13:44 What is Dark Flow?
14:55 What is the fate of humanity?
SOURCES:
Nature Video: tinyurl.com/26eurqup (many thanks!)
Great Attractor: tinyurl.com/26twjurf
Galaxies: tinyurl.com/23q9dbze
CMB Dipole: tinyurl.com/285ktfop
ROSAT paper: tinyurl.com/227eljr4
Shapley supercluster: tinyurl.com/24l92vtu
Cosmic filaments: tinyurl.com/ydh9owgk
Dark Flow: tinyurl.com/2dx7lu2l
Virgo supercluster: tinyurl.com/2yy3zdyp
Laniakea supercluster: tinyurl.com/27ad2atn
Dark Flow paper: arxiv.org/abs/0809.3734
Will Great Attractor destroy us? tinyurl.com/2abgk96m
SUMMARY:
Our Milky way galaxy is not stationary. It’s attracted by a massive object in space called the great attractor, at more than 600 km/s. What is this great attractor? Will it destroy us? And, what is Dark Flow?
Our galaxy is part of more than a million galaxies in the Virgo super cluster, stretching 100 million light years. The gravity of all the mass in this super cluster keeps it together. Until recently, we thought our Milky Way galaxy was the entire universe. Edwin Hubble found out otherwise in 1923 (18th century French astronomer Charles Messier discovered the first galaxies, but he didn’t know it at the time).
Over time, gravity has caused these galaxies and clusters to group into large web like structures containing visible matter and huge voids. In the 1970’s we found evidence that these galaxies are moving through space. Initially scientists thought we were moving towards the constellation of Centaurus.
In the 1980’s we discovered that we abd 400 other galaxies were moving towards something, not quite towards Centaurus. That something was named the “Great Attractor.” It was calculated that it must have a mass of more than 10 million billion suns.
More evidence for the attraction comes from the cosmic microwave background (CMB). The light from the CMB is distorted due to a doppler effect, as seen in the CMB dipole. This allowed us to locate the source of the great attractor. But we couldn't see what was there because it was obscured by the dust and matter of the Milky Way. But radio, infrared, and X rays can penetrate through the obstruction. Scientists found a rich cluster of galaxies in the center of the great attractor, called the Norma cluster.
But this Norma did not have enough mass to explain the movement. Something bigger was also attracting the great attractor along with our galaxy - a giant cluster of 8000 galaxies called the Shapley Supercluster or Shapley concentration.
This supercluster was discovered American astronomer Harlow Shapley in the 1930s. It's 650 million light years away and has a mass 4 times that of the great attractor. it is the most massive structure within a billion light-years from us.
The CIZA project found that the Shapley concentration is the main source of our galaxy’s and the local group of galaxies’ movement. But there is another piece to the puzzle. In 2016, the team found that the Vela supercluster explains the final 10% of our movement.
Will our galaxy eventually all be absorbed in the great attractor or the Shapley cluster? No, because spacetime is expanding faster than our velocity towards these attractors due to Dark Energy.
DARK FLOW: The overall expansion of the universe is uniform, but cosmologists found an anomaly. Many galaxies might be moving in a preferred direction. This is called “dark flow” because it’s unexplained.
Some wild theories speculate that something massive might lie just outside the the visible universe, or it could be caused by a catastrophe in the early universe, setting up a motion that took billions of years to develop. But it's more likely just a mistake in the data. Evidence indicates Dark Flow is probably not real.
#greatattractor
#darkflow
Are we in danger? No. Any movement due to Dark flow and the Great Attractor are nothing to worry about. These movements so slow and the effect so tiny that it’s not going to make any difference to us or even our solar system.

[@louislesch3878]

I have a background in CFD (computational fluid dynamics) and when I see these patterns, I immediately think of the surface of a slow moving river where these patterns are the effect of undercurrents. When I see rotation curves of most spiral galaxies, I immediately think of micro eddies also as a consequence of a flow field with a Reynolds’s number of 4000 or so. If you look at DNS (direct numerical simulations) where the flow field is resolved to the theoretically smallest eddy scales, this is exactly the same pattern that you see. Dark energy fits well in a great river model as well where you get non uniform accelerating expansion due to a dynamic free surface. The only thing left to accommodate is the Big Bang, the supposed beginning of everything. But what if it’s not the beginning of everything but only the beginning of what we can see? A big splash in this great river would fit nicely because it would result in the the highly energetic yet super low entropy signature as seen in the CMB. Maybe we could collaborate on a KZbin video, Arvin.

[@ArvinAsh]

That's very interesting.

[@louislesch3878]

10’ long

[@TristanCleveland]

​@@louislesch3878 You might be able to find a collaborator at the Summer of Math #2, just announced, which is aimed at pairing subject-matter experts with communicators. I would definitely watch this video and hope you will produce it.

[@anatomicallymodernhuman5175]

But rivers flow in channels. What channels the matter in space? Gravity tends to pull matter into balls, not filaments.

[@ornessarhithfaeron3576]

IIRC professor N. K. Spyrou and K. Kleidis from Physics, AUTh, Greece made a paper DOING something similar but also with thermodynamics

[@tomaaron6187]

Top notch presentation,. As someone who has been in the sciences for decades, I appreciate the quality of information. Clear presentation is not to be confused with dumbing down.it’s refreshing to have this type of quality. One caveat: ‘Might’ not impact us. This assumes that these speeds are constant.

[@limbo3545]

I never really understood the great attractor and the expansion of the universe. I mean I understood roughly the concept, but you brought it to another level. Great video and thank you for the education lesson.

[@stant7122]

Since the current speed of the expansion of the universe is greater than the speed at which the Milky Way is moving towards the great attractor, I think that means from an outside perspective, we speeding away from the great attractor and towards nothing but empty new space. Or I guess we are speeding towards great attractor but great attractor relative to our position is speeding away from us faster than we could ever hope to catch up.

[@duncanvantongeren4646]

The staggering gullibility… Space is fake as fuck. 2nd law of thermodynamics, anyone?!?

[@tylermcnally8232]

@@duncanvantongeren4646 source?

[@dria7387]

Great attractor is one of Ultimecia's HP attacks in Dissisdia Final Fantasy ☕

[@duncanvantongeren4646]

@@tylermcnally8232 You cannot have pressurized system next to a vacuum without a barrier. The force of 'gravity' is not going to be of help since the weak vacuum of your lungs on the earth surface can already make you drink with a straw, so forget about a weaker gravity doing anything against the 'pull' of a enormous supposed space vacuum. This is a contradiction, so a 'space vacuum' cannot exist above our (existing) atmosphere. Problem with our education is that we trust our teachers and we don't have enough time to think about and test what we learn. Hence we get deceived...

[@gsalien2292]

Now my brain is being pulled apart while I process all of this and the Great Attractor is now the refrigerator summoning me towards it to retrieve a frosty pint to finish my contemplation! Thank you so much for another brilliant presentation!

[@bokiNYC]

😂😂👍

[@ArvinAsh]

I'll drink to that!

[@WriterCut]

@@ArvinAsh But here comes my doubt. How do they calculate the movement of our galaxy towards the great attractor if our space is expanding at higher rate than the attraction itself. How can we understand our galaxies movement towards great attractor. I mean movements are the key right.. i dont undertand . Please if you can reply please help.

[@CristianKlein]

"You can still sleep sound at night." It actually took me 4 tries to see this video end-to-end without falling asleep. The non-urgent food for thought, combined with the calming voice does an excellent job at helping me disconnect for the night.

[@ArvinAsh]

Glad to hear that. I'm trying to solve the world's insomnia problem.

[@madangopalbhardwaj]

His videos are my lullabies too 😂

[@Reyajh]

Well we can still sleep sound at night for at least another billion years. After that tho, we need to start worrying about the big rip, but really the sooner we start to solve these issues the better! :P😆

[@jimsmind3894]

The idea of a larger mass outside the visible universe, causing expansion (dark energy) is an intriguing idea!

[@Physics__guy]

Arvinash you are the great Online teacher i have ever seen in my life . I NEVER imagined that i will ever be able to understand these complex Topics in that simplified way... Hats of Arvin . Love from India.🇮🇳🇮🇳🇮🇳

[@hupekyser]

fun fact: If you Shazam the song at the very end of this vid at 15:40 you will find its called "When You Are Crying by Norene Murdock" yet if you search the entire internet, you won't find one playable or downloadable file or stream of it, apart from a 30 second clip from a weird place called chartoo. great vid. btw.

[@TheSwiftFalcon]

Is it this one? kzbin.info/www/bejne/aGjCmJairZx8o5I

[@rickcilo7567]

channels like Arvin Ash, the versetarium and star talk have taught me more about theoretical physics than i would have learnt in a school and this inspires me to want to keep learning more about the universe.

[@Iogicaldude]

WHAT A VIDEO MAN ! HAT'S OFF TO ARVIN SIR.. IT EXPLAINS EVERYTHING NEEDED

[@dawnwatching6382]

Thanks Arvin & The Team, you're all great.

[@robertlee4809]

The scale of our universe is mind boggling...I can't describe the feeling I get when I ponder such scales of size....small? Miniscule?

[@robertschlesinger1342]

Excellent video. Very interesting, informative and worthwhile video. Many thanks for the links to the papers.

[@Urroner]

Good stuff sir. Got a bunch of my required science fix here. Have a son who, when he was 15, declared himself to be the Great Attractor. He had just learnt about it in school. Ha, ha, funny son. Problem with that is the great attractor is way older than you and way more massive. Without missing a step, he walked up to me, patted my belly, called me Sir TGA, and ran out the door. I expected nothing less. Between ourselves, I was Sir TGA, and he was Mr. U. Every kiss begins with "K," but ugly starts with "U" son.

[@abhishekc232]

The way you explain the concept is incredible.

[@lennyngrado6365]

Astronomy and physics are so interesting that even knowing that there are things we don't know is fascinating.

[@louisdetulleo1347]

You are the best! Thank you for making physics and astrophysics so accessible!

[@alfredobeltran611]

Thanks once more for explaining this topics with such clarity

[@MarsStarcruiser]

Thanks for the explanation of the CMB dipole. I had curiosities on that for awhile now but this definitely makes sense.

[@tracyhouser]

One of my favorites from you and I've watched dozens of your videos so happily. So so so interesting! Thanks Arvin!

[@Akamai.808]

This cosmic content is truly top shelf! Your explanations and detail very well presented. Mahalo!

[@OmniGuy]

Never a boring Arvin Ash video. Heck, never even a boring minute in an Arvin Ash video. Very well done. Looking forward to your next video, my friend.

[@TM-yn4iu]

This was truly an excellent explanation of a subject that I am not "educated" in but is stimulating. I appreciate the condensed approach to share complex information. I understand that is a documentary mode of theory based on the presenters facts - as always great.

[@anthonychan4571]

Thank you for the great explanation. You are perfectly gifted to be a great teacher

[@BlindPidePiper]

I’ve been interested in the subject for quite a while and this was the best description that I’ve seen. Thank you.

[@ManiBalajiC]

SEA did a great job on this concept with a good visualization...

[@lawrencegoldworm960]

Excellent content. Excellent presentation. You are at the top of your game!

[@prateekactive]

Superb presentation...how can someone explain these complex terms so easily. This is awesome.

[@hemantmakone867]

Please make video on James Webb telescope.. 👍

[@ArvinAsh]

That's coming soon! probably 2 videos from now. Stay tuned.

[@SuhailSyed_Ibn_Patcha]

Heard that the first image captured by JWT will be sent back on July 12, wow!! Eagerly waiting to see how humanity will actually experience the cosmos!

[@AndreaZzzXXX]

@@ArvinAsh great !

[@chriswhite599]

One of the best videos yet! Thank you!

[@SleepToSound]

Amazing video as always - keep it up

[@keniaoliveira4048]

Arvin ... you are doing an AMAZING & WONDERFUL work 🙌🙌🙌🙌🙌🙌 Thankyou so much ... my days are much more meaning with your videos. Big hug from Sao Paulo-Brazil.

[@rwarren58]

I love that you answered my question about the great attractor and the expansion of the universe before I could ask it. If I may ask I’ll ask a fringe question. Could this be a primordial black hole that is using galaxies like yo-yo’s?

[@michael195b]

Another great video, thanks for making them.

[@sunitapalissery258]

Thank you once again for the beautiful presentation.

[@affenwerk5598]

I'm always spaced out on how far into the universe we can already detect and speculate despite the massive distances... 😵❤️

[@JohnLobert]

Great video. I learn something new everytime I watch your channel. One note: “Begs the question” doesn’t mean “raises the question” as you used it. It means that the answer assumes the very point being raised by the question.

[@reesetorwad8346]

No.

[@edimbukvarevic90]

In classical rhetoric and logic, begging the question or assuming the conclusion (Latin: petitio principii) is an informal fallacy that occurs when an argument's premises assume the truth of the conclusion, instead of supporting it. For example, the statement "Green is the best color because it is the greenest of all colors" claims that the color green is the best because it is the greenest - which it presupposes is the best. It is a type of circular reasoning: an argument that requires that the desired conclusion be true. This often occurs in an indirect way such that the fallacy's presence is hidden, or at least not easily apparent. In modern vernacular usage, however, begging the question is often used to mean "raising the question" or "suggesting the question". Sometimes it is confused with "dodging the question", an attempt to avoid it, or perhaps more often begging the question means simply leaving the question unanswered. The phrase begging the question originated in the 16th century as a mistranslation of the Latin petitio principii, which in turn was a mistranslation of the Greek for "assuming the conclusion".

[@paikesitics]

I was holding my breath while watching this!! ..wow

[@brianzomorodi]

Excellent. The best clear science on KZbin.

[@deeperblueofficial]

Another great one. Thank you.

[@Haroldus0]

Excellent, very clear, concise and complete. Thank you so much.

[@farshadostadalirezania1936]

Thank you Arvin Ash for the beautiful program. As always you explained a hard subject in a way that is easily understandable. You did not leave anything out so all of the questions were answered at the conclusion of the program.

[@jimbuono2404]

Not really. Are you and I moving farther apart? Is the moon moving farther from the earth? The earth from the sun? The answer is 'no'. The local effects of gravity maintain the distance between objects in their local gravitational field. You are not expanding outwards in all directions.

[@blindmoonbeaver1658]

Hello Mr.Arvin, as always phenomenal video. I recently came across the topic of great attractor and your video just came at perfect time! Also I would like to suggest the video of SEA on this very topic. I am sure you will really like it.

[@vikitheviki]

I'm so relieved! This was such a cliffhanger but now I know we will be safe 😁✔️👍

[@raymcconnell1075]

Thank you for another great video! Arvin, you are wonderful!

[@vishalikasharma2624]

very well put together! this is one of my favourite channels on KZbin. ^_^

[@Dr10Jeeps]

Another wonderful video from Arvin Ash. I love them!

[@cobrabtc]

Great educational video sir. Really enjoyed this and learned about the new superclusters.

[@xshakespearex1]

This video earned a sub.I came in not expecting to learn much and left wanting to learn more. That is perfect. Thank you for making this

[@ArvinAsh]

Thanks for the sub!

[@nemohamed]

Your method of story telling gave me the shivers and made my brain tingles

[@TheMg49]

Great vid. Fascinating stuff. Thumbs up and subscribed.

[@MahbubRahmann]

Thanks for the great content as always

[@maheshanigol8657]

WoW!!! That was mind-blowing and mind-boggling

[@pertwee9376]

Thank you Arvin, wonderfully explained.

[@Stefan_trekkie]

I was waiting for your thoughts on this topic for a long time.

[@TheDrewb666]

Great content. 😁 lookin forward to the next.

[@Jakob.Hamburg]

This was interesting. Ty for the video. : )

[@ashisnaiding8702]

My favorite space channel. Love your arvin ash

[@FelixIsGood]

I can't sleep calmly after those videos, every time i watch videos like this i get a existencial crisis because of the short time we are alive and how much we will miss. Great video however and that's the reason i watch those kind of videos anyway.

[@onebylandtwoifbysearunifby5475]

Thanks for providing some numbers and detail. More detail the better.

[@stevenbliss989]

Great update, thank you for pulling it all together! :):):)

[@MendTheWorld]

So would you say that Arvin Ash and his videos are a great attractor for you?

[@acemanNL]

Thank you for letting us all know we can sleep soundly at night! 😀 Great video, my friend!!! ❤️💪

[@Z-42]

I wish I could upvote this more than once. Thank you!

[@paxwebb]

Mind blown yet again. Thanks for another amazing video~ :p

[@carmenosorio1315]

Great Arvin !!! Thankyou!!!!

[@sphinxtheeminx]

This channel is my go-to place for expanding my consciousness - who needs psychedelics when we have this to ponder.

[@ArvinAsh]

I agree. Who needs drugs, when we can just ponder the wonder of reality!

[@sherif.kenawy]

انت الافضل دائما ، رائع و عظيم كالعادة شكرا لمجهودك و معلوماتك

[@xenan1260]

Great informative content 👍 you seems such a nice person friend 👏🏻

[@Shah37Bang]

Another great video as usual Arvin, thank you!

[@ArvinAsh]

Glad you enjoyed it!

[@The_NASA_GUY]

Great video!! I always wonder about the great attractor.

[@badreddineabbes114]

Love your video my friend ... clear explanation of very complicated phenomena ...even for those who do not use English perfectly .. like me hh ...

[@rw6836]

Thank goodness, our lives are so short, that we don't have to worry about collision with any other galaxy or large objects!

[@anuragtuti7357]

I learnt something new today. Very well presented! Of course, I do understand, our attempts to make more sense of our universe is mostly based on prevailing knowledge that we have accumulated so far. So, this may or may not be relevant in future when we are able to unravel the mystery of dark energy and likes of it, which perhaps we still aren't aware of, as yet. Nevertheless, learning something new is so exciting :) Keep them coming!!

[@jettmthebluedragon]

We say dark energy is the dominant force however it could be as he said the milkey way is moving and the earths rotation is moving as well and according to the observer that could lead to a optical illusion 😐also how can the entire cosmos only be 14 billion years old ?😐it does not make since 😓

[@TheFos88]

I really appreciate the way you end this. I am utterly fascinated with pretty much everything you covered (and explained so well!) yet at the same time I find myself terrified by it all. Like, I can't wrap my brain around the expansion of the Universe and Space-Time itself, because then I wonder why don't we observe this as each second of time goes on, if it's increasing at an ever faster rate? And when would it stop? Would it ever? Would matter itself expand? How far does this behavior of the cosmos go exactly? Just crazy stuff...

[@blokin5039]

Did you already figure it out?

[@melangellatc1718]

I like you, Arvin! You didn't bore me or hit me with too much math for my BA/History to handle.

[@oilcanshawn4918]

Thank you for another video sir

[@jaybruce593]

Yet another video where Arvin knocks it out of the ballpark. Up until 12:40 I'd been getting fidgety wondering "how does this square with hubbles observed expansion?" I should have known Arvin wouldn't leave something as important as that unanswered. Thanks agian my friend, looking forward to your next video o7

[@iamborg3of9]

great video. well explained. thank you

[@edwardmartin6052]

Wow. Thanks for this!

[@geemanbmw]

Love this Arvin thank you

[@zeus.87]

Great as always

[@guiller7150]

Excellent material, as usual!

[@deant6361]

Very interesting but I must admit Im not up to speed with this video but I really enjoyed watching. Thanks for sharing 🌌

[@clintwilde1048]

A great tutorial. Scientific endeavor, the ability to make a living thinking about all this, writing it down, speculating, theorizing, made possible by a world of people farming, processing, transporting, drilling for oil, running steel mills and power plants, making the physical world we know, so that some folks can sit around and ponder things.

[@gary1anderson]

Wonderful presentation. Thank you.

[@richardrichards9180]

Very interesting and intelligible-the logical extrapolation would seem to be that all matter agglomerates to ever-denser units, until everything disappears into ultra-super-massive "black holes""-(which maybe then explode at "absolute maximum" temperature & pressure, restarting the whole cycle?)

[@samuelbrooks7455]

Good video. Thanks for sharing

[@MrDominicharrison]

Excellent video so well presented too 👌🏼

[@ArvinAsh]

Glad you liked it!

[@juergenlorenz9698]

Great presentation. Thank you

[@hupekyser]

Arvin is the school teacher that the kids actually liked

[@Jack-gn4gl]

Kids would like going to school if all teachers were like him

[@thedubdude]

Well done. Thanks.

[@geraldhoag5548]

My favorite theory involving dark flow is, There is another universe, outside of our own. At one point we thought that all the bright objects were suns/stars. Then we discovered that they included galaxies. Since then we have found Sagan Units of galaxies, you know, "billions and billions". So why can't there be a universe, out there, in fact Sagan units of universes, just beyond our ability to detect. More massive than our universe. Not strings or dimension, just more rocks on rocks, just like our universe with the same laws of nature. A lot more fun to consider, without all the elegant math getting in the way.

[@ArvinAsh]

Dark flow is probably not real, just a mistake in the data.

[@markymark3075]

Thanks, i learnt a lot!

[@travusfaulkner1461]

The research that I have been doing on my own leads me to believe this to be true. .Dark flow has been my most favorite cosmological scientific research done to this day. I do feel like I might have an idea of what is attracting us to the great attractor or what is pulling the great attractor in that direction.

[@rubycelica]

just found your channel and damn, why only now?! you are just SO GOOD, i think i have my new favourite science channel...:) thank you for your efforts, i appreciate it very much!

[@ArvinAsh]

Thanks. Welcome aboard!

[@Heartford]

Excellent excellent video…WOW 🤩

[@keything8487]

love these videos !!!

[@mikegeld1280]

Great little video 👍interesting, I think the idea of something massive outside the visible universe is a good theory. We just dont know,but I think that a QC would be able to "extrapolate " what could be causing this draw.

[@Learner..]

Love your videos❤️

[@ProactiveForce]

New information for me in this video. I love this type of mystery. The great attractor seems to be an important clue to the mystery of gravity. Imagine the combined kinetic energy of each of the great attractors your described. The significance of quark and lepton action and interaction to me is mind boggling. Our current understanding of the Higgs field and gluon is currently too limited. As to the cosmological constant dark energy and gravity question, I am fascinated by gravity inside a black hole and the actions of quaks an leptons and the curvature of spacetime or time space and the super colider singularity result measured and superposition states. If the gluon force were extended or a new wave field discovered that extended the strong nuclear force seems to be a possible path to follow. To me I am fascinated by the attractive force proton neutron quark kinetic energy measured state heald together by the gluon wave field superposition state. Amazing!

[@damianabbate4423]

Great video!