M94 - Rings and Rotation Curves - Deep Sky Videos

Dr Becky Smethurst discussing Messier 94.
More links and info in full description ↓↓↓
More Messier Object videos: bit.ly/MessierO...
More videos with Becky: bit.ly/Becky_Pl...
Dr Becky's website - with links to all her stuff and other projects: rebeccasmethur...
Unveiling the nature of M94's (NGC4736) outer region: a panchromatic perspective: arxiv.org/abs/...
Is Dark Matter Present in NGC 4736?: iopscience.iop...
Deep Sky Videos website: www.deepskyvide...
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More about the astronomers in our videos: www.deepskyvide...
Supported by the University of Nottingham
Back us on Patreon: / deepskyvideos
Video by Brady Haran
Editing by James Hennessy

[@terryendicott2939]

The "theory of duck matter" sounds like quackery.

[@roderickwhitehead]

Duck Lives Matter

[@_rlb]

Who pays the bill? :)

[@garethdean6382]

It walks like a duck and quacks like a duck, but can we REALLY be sure it IS a duck?

[@gonecoastal4]

Pretty easy to find ducks though.

[@thekaxmax]

@@garethdean6382 if it's duck-coloured

[@psygremlin1]

I absolutely love that you didn't edit the ducks out of this!

[@thedarkmaster13]

I'm just surprised they weren't an epilogue or put in a blooper reel.

[@psygremlin1]

And miss the opportunity for a Duck Matter pun?

[@hellionfi]

I was like "Wow, that's some scientification of the popularization of science - can't wait for the results of that telescope time proposal" - and then see that most of the top comments are about ducks. They were cool too, though.

[@morkmon]

Ooh this telescope time proposal sounds exciting. It would be really cool to follow this process from idea to result

[@Rubrickety]

Many thumbs up for "Duck Matter". That was adorable.

[@robertmcgovern8850]

Plenty of Duck Energy on display. And of course quarks are named after seagull noises, via James Joyce ("three quarks for muster mark"). The search is on for a buffleheaded WIMP, or a grebe's boson.

[@nousernamejoshua1556]

Earth would look like what, some gas cloud or something if all water looked black and the atmosphere prevented light from escaping and hydrogen clouds, storms also black and distant light obscuring. We would certainly need a needle in a hay, stack!

[@Olsfen1]

KZbin analytics don’t show them, but I know from experience that Brady is big in the duck community.

[@onalennasehume4586]

Lol😂😂

[@kapa1611]

Ducktor Becky is also popular with them ;) :P

[@MrDowntemp0]

Big duck energy

[@DrBecky]

I shall forever be known as “ducktor Becky”

[@RichardBreen]

Wonderful "narrative arc" to this video - and a cliffhanger too. I will be interested to see where this goes.

[@garyhuntress6871]

Please submit this proposal because I want to hear the results in a future Deep Sky video!!!!!!

[@flynnezrabeckman]

Brilliant! Exciting to see Dr. Becky's deductive process, passion, and a plan of observation to provide more evidence!

[@4o4o4]

Lol I only saw the thumbnail and then thought "oh cool, brady's in a Dr Becky vid"

[@blazebluebass]

yeah Becky is super cool! nice watching videos filmed outside too

[@SuperShadowP1ay]

I suddenly fell in love with this channel a few weeks ago. Excited for my first new upload to the legendary Messier project!

[@qzbnyv]

Be sure to check out Dr. Becky’s own KZbin channel too if you haven’t already (-:

[@Scribe13013]

I like Dr Becky...she's full of life

[@annsidbrant7616]

M94 is one of my favorite galaxies, mostly because I love that bright blue ring of stars. I'm all for knowing more about this galaxy.

[@y4lnux]

I thought I was seeing a sixty symbols video, then I realized this is a new colaboration with Dr Becky :)

[@tramsgar]

Wonderful trait to admit mixing up radius and diameter, like we all do an a daily basis! (right?)

[@SideshowMorgan]

Yay! So good to have Becky back :)

[@iansharmacook]

I would love to see a vid on how such proposals are put together!

[@lamegoldfish6736]

Dr. Becky is incredible! 😃

[@andersf2798]

Real time science in the making. Love it.

[@jakeroberts8471]

PLEASE give us any updates on this galaxy and it's dark matter controversy!!! Genuinely interested now 🌌

[@SoleaGalilei]

Please do submit the proposal and keep us updated! Let the ducks know how it turns out too.

[@unclvinny]

Keep the Ducktor Becky videos coming, please!

[@ChrisTurchin]

I love these videos so much, sometimes just put the playlist on to run in the background on a lazy day. And the fact that one can read and enjoy the comments as well (mostly avoid KZbin comments like the plague) is an added bonus. 😂 #duckmatter

[@Hotrob_J]

I'm excited for your updated data! Science in the making!

[@thepoofster2251]

Yay Dr. Becky! She rocks

[@LiyangHU]

A bit off-topic, but where is this pub? That garden looks lovely. Becky's got the best spot!

[@klaxoncow]

Yay! Boctor Decky!

[@Tom-ef1mz]

Dr. Becky: We could be on to something here Brady: Sounds like great content! Let's get a proposal together! Dr. Becky: Ya, I'm not writing that.

[@DrBecky]

😂 I have so many things I’m already supposed to be writing

[@Tom-ef1mz]

@@DrBecky But the content! Think of the algorithm!

[@harshraojr]

Hey Becky & Brady, this was such wonderful video on how logic and curiosity can help you ask big questions. I think everyone here would like to know what happens to the proposal. May be a series on drafting entire proposal and telescope observation will be great insight for everyone.

[@mgrenee5878]

Please keep these Deep Sky Videos coming. So interesting and entertaining.

[@shivercanada]

Great to see a new one!!! Haven’t been able to do any astrophotography recently this helps. 😊

[@theemissary1313]

Was that dr. Beaky talking about duck matter? Also, as great as it is to see another video from Deep Sky Videos I can learn a bit more about dark matter, I really want to know where this was filmed, great location.

[@Sbence92]

Ducking love the channel! It's a pity the content is so rare.

[@rhoddryice5412]

Great episode! I cross fingers you get the telescope time.

[@theharbinger2573]

That sounds like Brady from Numberphile - you need to get Dr Grimes and Dr Becky together in a video on something cool.

[@marpfel]

There is some mysterious behaviour of duck matter going on o.O

[@spamboli]

that would be awesome if this informative channel with somewhat arbitrary goals directly led to useful science! make it so!

[@GregtheMad]

Wait, they don't have the new data yet? This video has a cliffhanger! :O

[@matszz]

Well Dr Brady, we're expecting a sequel now.

[@superstringcheese]

This is gonna be huge big.

[@RavenZahadoom]

I do hope the idea to put in a proposal is real and not just a throwaway comment. And that we are all kept informed on it. But also I have to ask, if this galaxy's apparent lack of DM is so controversial, why hasn't a IFU been done since 2009? Surely Becky isn't the first person to think of that? Again with respect to the controversial nature of the findings.

[@garethdean6382]

It's surprising, but not really 'controversial' as such; the amount of dark matter in galaxies varies, in small dim galaxies it can exceed 99% of the mass. There's current focus on other no-DM galaxies and this would just be another one to add to the pile. In a big field sometimes things like this get overlooked.

[@sukhoranjanshome4527]

Wait, the Messier list wasn't completed ?

[@DeepSkyVideos]

We still have some more to do!!!

[@sukhoranjanshome4527]

@@DeepSkyVideos Yeeahh man good luck, looking forward to it !!!

[@maksphoto78]

The list is getting messier and messier.

[@asabelesabelo1060]

Dr Becky, what does the ring on this galaxy means? for example on the mass distribution binding the galaxy

[@roderickwhitehead]

"...is, like, wuuuuut?" LOL

[@Josecannoli1209]

Nice Brady we need more physics and space

[@jwwjww2041]

love your videos keep it up thanks

[@Veptis]

Rarely get a shot that has Brady in it. But has anyone written a proposal?

[@Etudio]

I assume you don't want Spoilers, but... Anyway, Good Work you Two!

[@vaderdudenator1]

Soooooo is that proposal actually happening?

[@Daniel-yj3ju]

I'm up for it too

[@rienschooll3506]

Has anything ever come from the telescope proposal?

[@brouquier7172]

I'm watching this more than two years after the video was published. Does anyone know if Dr Becky has actually followed through with the telescope proposal and got the data?

[@stu8506]

She's in the middle of a creek. Flash flooood!!!!

[@Leo.Wirabuana]

05:08 the ducks were proofing that no dark matter beneath the river.

[@essaboselin5252]

Looks like the ducks are down-voting this video. That whole bit sent my mind on a Pratchett-esque tangent where, even now, ducks across England are arguing among themselves whether they should tell you where the analysis went wrong. Don't underestimate them - they're a bunch of wise quackers.

[@Ausussum000]

I want a "duck matter" t shirt please

[@TheExpatpom]

Is that Ducktor Becky?

[@QIgorecki]

Modified Newtonian dynamics

[@Kwodlibet]

It's all fun and games, but should it ever turn out that the Dark Matter is actually made of ducks Brady and Becky will have to split that Nobel Prize money.

[@DrBecky]

One can only dream

[@tramsgar]

No "extra bits" of ADD-ducks? =(

[@Lunarmobiscuit]

Seems simpler to get some telescope time looking for faint spiral arms on other galaxies. Find a few more of those and the need for dark matter disappears too. No? Becky?

[@ErizotDread]

Everyone duck! Here come the puns! lol

[@Jesus.the.Christ]

I am with team ducks: Dark Matter is not a particle.

[@gregs2284]

Do tripods not work outside? Especially if you're going to zoom in (and out and in and out...) a steady camera on a tripod would be far less motion sickness inducing than this handheld shakyvision.

[@bullardsbarbarian]

Please put Brady on the us ballot before it’s too late. We need someone willing to learn and grow with science. California resident looking for a place to defect speaking

[@chaoslab]

The discovery of duck matter... xD

[@nousernamejoshua1556]

Ayyeee..🙂 Thank's to DR. Becky's duARckle particle smasher. 😄 But sadly no ducklings were produced, so randumb Tevatrons not high enough.

[@ossipozzi1238]

Should be interesting

[@Jerome...]

Are you on a tiny island?

[@exoyt7575]

Ducks pog

[@billbaggins]

Duck matter with ducktor Becky

[@Jesusisyhwh]

They were being duckstracting.

[@raskov75]

Ha ha! yeah!

[@Kargoneth]

Oi! Where's me IFU proposal then?

[@miri64]

Contains Berlin easter egg

[@RedStefan]

Duck Lifes Matter

[@namanziu4211]

And by dark matter you mean ether which explains all of the mysteries in physics.

[@mr51406]

The ducks got excited because they thought you were talking about “drake matter.” 😉 🦆

[@iugoeswest]

Ducks anyone

[@Happy_Abe]

The ducks are jealous of dark matter

[@Mr.Beauregarde]

*THESE data

[@dougel4709]

🦆🦆🦆🦆🦆

[@RebeccaCampbell1969]

And if so, then what! To dark matter, which at this point could be particles-dust-objects or nothing Hurry, one of the ducks looked you funny: as if hinting intentions of publishing before you 🦆

[@guyh3403]

an then suddenly ducksies

[@TamDNB]

Put a mask on Brady

[@maksphoto78]

Science and technology. This is what young women should aspire to, not stuff like "Instagram influencer" or OnlyFans.

[@kapa1611]

women are roughly half of the world's population.. i think there are enough of them around to be scientists and entertainers xD

[@maksphoto78]

@@kapa1611 Not nearly enough scientists.

[@cyanidejunkie]

Time will show there’s no such thing as “Dark Matter” But there is such a thing as miscalculation. And don’t even get me started on the effects of electromagnetism.

[@hedlund]

Please don't get started on anything apart from some sorely needed education.

[@michalk1487]

omg boring becky again ;/

[@MrDowntemp0]

the process of writing a telescope proposal and the way it pans out would make a great series!

[@naplesbeachfan]

Optical telescopes have given us a narrow view of space. It is now Radio telescopes that can give us a more complete view of our wonderful Universe.

[@peternakitch4167]

Please keep us in the loop about how the proposal and investigations go.

[@gerttherude6366]

I love the talking to the cameraman thing , really helps the dynamic :) ty for making content understandable by idiots (like me) and intellectuals

[@i20010]

True, this format makes for a much livelier interview.

[@iflytb20]

Who published the theory of Duck Matter? Duckter Becky🤪

[@garethdean6382]

A real egghead, but I think perhaps a bit of a quack.

[@nousernamejoshua1556]

The spirals are time? So maybe the extra space is compiled mirror images like a hall of mirrors. MCMDO, Sunrise sunset ² what did the southern half do?So if you could unravel all of the galaxy spirals to straight lines to form a square... it has to be square. It can't be cubed, you cant have a duck inside of a duck. How big is the square, and how much actual space? Beckster, Show off, ducks. 😄🦆🐧, just like it was yesterday 😂, hey, are there space seasons, like interferometry measures the height of time waves? We have more energetic waves but it doesn't affect seasonal time but our appointments, schedule changes through voids, which brings the next wave peak. More light more stability, but you can measure language through the troughs. Quack. We're not in space, hyperionspace moved in between us. Hyperion /haɪˈpɪəriən/, also known as Saturn VII (7), is a moon of Saturn ... by ... Orbital period: 21.276 d Rotation period: ~13 d (chaotic) Clocks ticking, Hyperion Technologies - Smart components for small satellites  Press release - 7 October 2020: Based on a cash and shares deal, Hyperion Technologies has agreed to be acquired by AAC Clyde Space. Calyde space... ugh. 🙄

[@nousernamejoshua1556]

I don't mean completely empty, I mean have some buzzing of knowing and doing, but everytime you look away and look back they have a different kind of personality of knowing and doing. It is That particle which cannot be known of its location because it is like a liar, and the cause of Brownian Motion and zwave particle duality with angles. Which was blamed on light, but is the constant fault of darkness.

[@justpaulo]

We already have Qua(r)ks in physics, so I'm all for "duck matter" !

[@alansilverman8500]

It's nearly face-on, how are you getting a rotation curve out of it at all?! What's it's estimated inclination...maybe that's off ? As long as you're applying to do an IFU, why don't you also see if it's rotation curve at 21cm agrees with your observation...

[@DanielBerke]

I was wondering the same thing about getting a rotation curve from a face-on galaxy.

[@nousernamejoshua1556]

They did an IFU four years after some time ago. I didn't understand the reading, might be just purely aging stars low light buffer and not a AGN black hole.

[@ypey1]

Exiting! Cant wait for the folow up...

[@hedlund]

But you only just got here

[@FredPlanatia]

This has been brilliant, I just like the atmosphere of casual discussion about science, while the Oxford ducks do their crazy things. You have such a knack for explaining the kernel of the science so a lay audience can understand it, and feel your excitement about it. I wondered if you have a follow up on this. There was the recent study of 6 diffuse galaxies which all apparently have no dark matter, so even if M94 ends up behaving like other spiral galaxies (having a dark matter halo) don't you still have to contend with those 6 diffuse galaxies?

[@19TheChaosWarrior79]

Unashamed love of science right there

[@sandybarnes887]

Quack

[@TamDNB]

Vera Rubin

[@primoroy]

WHAT? You are NOT in grey dreary pea soup weather? Sunshine, greenery, flowing water, ducks, intelligent people? Not the U.K. we know outside the U.K. 😳

[@bazpearce9993]

I'm with the ducks. No dark matter. Clearly we have something wrong.