Don't know why, but I felt relieved when Matt said the epoch of star creation is just beginning.

"Missing Mass Mystery." That's 3 letters M... "3M" is the company that makes Duct Tape. The universe is held together by Duct Tape confirmed.

@yupnope3171

6 жыл бұрын

Master Therion very funny. That would mean Red on the Red and Green show is God!!!!!!! He makes everything from duct tape!!!!!

@jazeroth322

6 жыл бұрын

Storkz team fortress 3 has a 3 in it, meaning half-life 3 conformed!

@harryandruschak2843

6 жыл бұрын

This video lasts 13:22 3 times 2 is 6. The remaining two numbers add up to 3. 6 three times is 666.....The anti-CERN conspiracy trolls need to be informed about this :)

@shirleymason7697

6 жыл бұрын

Master Therion "..........we’ll then, the red shift is only red tape; Einstein vindicated.

@animistchannel2983

6 жыл бұрын

Actually, since the whole issue was about missing quark/baryon particles, I think it proves that the adhesive should be called by the alternate pronunciation dating back to the beginning of the quantum science era: "Duck Tape." They have been trying to tell us for years! The ducks paddle around calling it out: "Quark, quark, quark, quark!" to let us know they had the situation under control already :)

It's oddly satisfying how Matthew always ends every video with "...space-time". Keep making more. GO PBS SPACE-TIME.

I find it amazing and humbling to think about the distribution of energy from the top down instead of the bottom up. So about 70% of the energy of the universe is of a form that hardly interacts with anything at all, uniformly distributed in a very diffuse way throughout the whole thing: dark energy. About 25% is still in a form that hardly interacts with anything at all, but interacts with itself enough to clump together into a web of invisible filaments: dark matter. About 2.25% is stuff that does actually interact in interesting ways but is just spread out diffusely through all of space not doing much interesting: the cold baryonic matter we'd already accounted for. Another 2.25% of it is at least caught up in those invisible filaments and slowly flowing together: the lukewarm baryonic matter we just found. About 0.4% is concentrated at the tiny points where those invisible filaments intersect, densely enough for some of it to start fusing and illuminating the rest of it incandescently. This tiny glowing fraction of a percent is ALL THE STARS IN THE SKY. And only about 0.1% of all the energy in the universe is interacting stuff that has interacted enough to produce something other than a gas, but rather some specks of dust mostly floating around some of those stars, and just one of those innumerable specks of dust that altogether make up only that one tenth of one percent of energy in the universe is THE ENTIRE WORLD WE KNOW.

@epickat2716

6 жыл бұрын

Pfhorrest deeeep

@PazLeBon

6 жыл бұрын

world is earth dik slash lol

@faroukk1909

6 жыл бұрын

dude , earth is flat. 70% 25% 2.25% Is that right? ok! 2.25% wtf! 0.1% omg .. WTAF! how do they even come up with these numbers ? ?

@Dethas1991

6 жыл бұрын

Farouk K "how do they even come up with these numbers ? ?" - go and read how :)

@alveolate

6 жыл бұрын

i'm still convinced that dark energy is really just very advanced tech used by type-2 civilisations to mask their existence from lower lifeforms like ourselves. a cosmological mute button, if you will.

Possible evidence for string theory in 10000years. I can't wait. No seriously I can't wait that long.

@MouseGoat

6 жыл бұрын

dont be so hard on yourself, believing is the key (and uploading your consensus to a computer would also help)

@FoggyMcFogFace

6 жыл бұрын

That is, if we ever reach a consensus

@BiophysicalChemist

6 жыл бұрын

Pa Pinkelman I don't really get why everyone thinks string theory is some wacky idea out of left field. It seems like physicists still don't understand why strings are a good basis for understanding elementary particles states, even though it should be plainly obvious to anyone who understands simple quantum mechanics.

@baronteddyvonforsthoffer2567

6 жыл бұрын

Please explain why it should be plainly obvious.

@BiophysicalChemist

6 жыл бұрын

Baron Teddy Von Forsthoffer I mean, it just _is_ if you understand the structute of Dirac spinors. Just picture a half integer spin wavefunction on the 3 sphere - notice the two linked circles, one being the spinor's rotational axis and the other which is mapped to a constant phase change by the SU(2) action. At arbitrarily high energy levels these "loops" don't go away because they represent a conserved charge of the SU(2) symmetry, so they just coil up and densely pack into the 3 sphere in a variety of ways. These are your typical hydrogen atomic orbitals, but the orbitals nornally shown are only based on the Schroedinger equation, which doesn't include spin (i.e. doesn't describe the wave function on the whole sphere, but only on the tangent space at the origin).

Man has learned so much, it's mind boggling,yet so much we don't know.If this guy has kids,how lucky are they to get read a bedtime story in his voice.

@pendletwinsong

6 жыл бұрын

max stax hahahah so true

@WarLorde

6 жыл бұрын

I think you mean 'mind bottling'

@alveolate

6 жыл бұрын

we've learned so much, yet we still don't know how to get trump to stop tweeting.

@hamdoggius

6 жыл бұрын

There is no cure for stupid.

@NUFC_1

6 жыл бұрын

Craig Rasch Trump makes more sense than this science bullshit

Why is it so satisfying when he hits the final 'spacetime?' Dangit, brain, stop responding to patterns so instinctively!

@romajimamulo

6 жыл бұрын

Max Salmon you know it's coming, and that it pulls everything together

@MaestroRigale

6 жыл бұрын

It's what our brains do.

@Kadaspala

6 жыл бұрын

I get ASMR tingles every time

@kendomyers

5 жыл бұрын

@@Kadaspala My theory is that the young generation is so starved of normal human experiences that the ASMR fad on the internet was made possible. Whereas my generation experienced the world by going outside, reading a book, or eating a sandwich, the new generation experiences the world through KZread, Fortnight, and Snap Chat.

@themonsterbaby

4 жыл бұрын

@@kendomyers exactly!

This series is a non-prescription pill for insomnia, thanks matt

@gagebrandon6674

4 жыл бұрын

I think that was offensive but I cant tell. Are you saying its it's boring?

@AnkurChouragade

4 жыл бұрын

@@gagebrandon6674 don't think so. I watch all the videos as soon as they are uploaded. I love them and replay them every night while going to sleep.

@rahulb6411

3 жыл бұрын

Gage Brandon lol literally the opposite

@aero16547

3 жыл бұрын

I watch these videos to go to sleep every night. So calming and relaxing

@akoblake

3 жыл бұрын

Lol accurate 👌🏾

Wish I had youtube with this kind of channel when I was in school/college. Books are good but this presentation is beyond helpful.

You missed your opportunity. "It surrounds us and penetrates us; it binds the galaxy together."

@XxsteamerxX

6 жыл бұрын

Manuel Pirino ...you ...me ...this rock...

@davidwuhrer6704

6 жыл бұрын

That's just gravity. Never underestimate the kg·m²/s³ of the kg·m/s².

@uranus2970

4 жыл бұрын

David Wührer Isn’t it rather the Higgs-field then? There can’t be gravity without it so... it surrounds us and penetrates us; it binds the galaxy together.

@SebaBuenoHaceMusiquitaJijiji

4 жыл бұрын

@@davidwuhrer6704 And electromagnestism too now?

@davidwuhrer6704

4 жыл бұрын

@DarkEdgeXD Thank you ☺

Even i often need to see an episode several times. I enjoy your show, and sometimes I even think I understand it. So thank you

Thank you so much for this video! during the last couple of days there have been a lot of misleading articles about this topic but your video really made me understand what exactly is going on, thank you! :)

*Q:* Where did the rest of the missing universe go? *A:* It doesn't matter.

@Alazen.

6 жыл бұрын

Out Now.

@jarehelt

6 жыл бұрын

Sebastian Elytron That is unbarionic

@PazLeBon

6 жыл бұрын

wonderif we put this much thought into feeding people n shit we´d have a tidy little planet

@TheDoctorRulesPSN

6 жыл бұрын

EYYYY

@alexgarza760

6 жыл бұрын

Medical Cannabis Spain word

Happy 1 Million subscribers. I don't know when you got so many but congrats.

@ringoffire0

6 жыл бұрын

he mentioned it an episode or two ago at the end

Life is not worth living without these videos. What was I even doing before this?

This show is the best thing on KZread. Thank you for this :)

I love how that one guy got promised a whole series of episodes to answer his question

@alcyonae

3 жыл бұрын

It was probably planned before and his question just fit where they were heading

Dear PBS Space Time, Is it possible to do a video about the possibility of a new big bang by quantum fluctuations? Yours faithfully, Erik de Wilde

@cherrydragon3120

6 жыл бұрын

erik2000 dat zou wel chill zijn

@thanasisgiannakopoulos2315

6 жыл бұрын

Yeah that would be so nice DO IT PLEASE

@erik-ic3tp

6 жыл бұрын

No one Important, Hallo medelander!

@erik-ic3tp

6 жыл бұрын

Thanasis Giannakopoulos, You're so right!

@Ed1Ward

6 жыл бұрын

erik2000 Is that your university project!

Bravo! Wonderful text, Science and poetry together. PBS Space Time keeps on improving every week :-)

Wow that's a very interesting discovery! Been loving your videos man. They are really well made and great at explaining things. Been so interesting to finally get an insight to how quantum physics works. Had no idea we understood the universe on the level we do and it's awesome. All the equations in videos that look mind-boggling but with historical explanations. Early into this channel so lots to learn. The how to make a black hole video was so ace but need to learn more about momentum space and quantum mechanics. You should sell shirts too, i bet you'd sell some.

*grabs popcorn, notebook, pen and turns on brain*

@fullblowngaming

6 жыл бұрын

Ditto except i grabbed a joint instead of popcorn,lol

@sebastianelytron8450

6 жыл бұрын

Ditto except I put my always-on brain into overdrive

@fghhna

6 жыл бұрын

at first I grabbed a boob, then I realized I was a lone virgin

@DANGJOS

6 жыл бұрын

You shouldn't turn on your brain watching this stuff. There might be an overload

@mrthompson3840

6 жыл бұрын

*brain overheats and crashes instantly

I wish I could describe what I feel when I think about this giant cosmic web. This stuff is too incredible

@vhawk1951kl

Жыл бұрын

do you normally or usually or habitually believe the imaginary? All this talk about "the universe" is pure religion because it is entirely*unquestioned*

I love these videos. Thank you for existing! This is the best breakdown on the current understanding of dark matter I've seen. I read stories like this in my RSS reader, but the 3D video models and presentations here are such a boost!

My favorite episode! Thanks for it! Star formation is only getting started, Fantastic. But what about black holes? They go up too then?

Have you checked under my son's bed? Everything else in under there. Hear that, Timmy!?!? Clean your room! You're breaking the Universe!

@JimmyStiffFingers

6 жыл бұрын

Kek

@BrnBear

6 жыл бұрын

New Message I see you around a lot. We watch similar stuff and that gives me hope in Trump's America lol

@vallorahn

6 жыл бұрын

It seems like some kind of AI, a very good one. Perhaps stupid humans seem like a good AI. That's why low responsibility jobs still exist instead of using robots.

@hypercuriosity9828

6 жыл бұрын

New Message I see you too much too. We have a lot of common interest

@666Tomato666

6 жыл бұрын

+Codeplayer xkcd.com/810/

A time-traveling monk from Middle Age England arrives in the current day. Being an ascetic, he's not impressed by our wealth and technology. He is, instead, delighted by the number of Christian churches to be found everywhere, generally multiple in a single town, some even situated next to each other! However, upon entering many of the churches, he is stunned and saddened by how few say a full Mass. This deeply perplexes the monk, whereupon he sets himself on a pilgrimage to solve... The Missing Mass Mystery!

@chrislaezur730

5 жыл бұрын

AAAAAAAAAAAAAAAAA

I've really been enjoying these videos--thanks for making them! It would be very helpful if you put the show number in the title of the video.

Your show is a national treasure. God Bless you all.

Q: What's another name for a metaphysical dinosaur? A non-baryonic baryonyx

@kauske

6 жыл бұрын

Nope, just a play on words of sorts. :P

@user-nf3hh8kn5r

6 жыл бұрын

kauske haha

@lonestarr1490

5 жыл бұрын

@@koseq7 Like in "all the missing baryonic mass has clearly just gone extinct at the end of the Permian"?

In before they corrected the title :D

First of all, thank you for this amazing channel. I'm taking one semester hiatus in-between my Bachelor's and Master's degree in physics and your videos truly make me miss sitting in the library studying. I would like to ask, is it possible to make a video on this Sunyaev-Zel'Dovich effect? Greetings from Hamburg, Germany.

This channel has sparked my curiosity and now I changed my major to Astrophysics

I'm so early that even the title is wrong

@kazzlim

6 жыл бұрын

what was wrote in the title?

@Alazen.

6 жыл бұрын

Ghostrider_gt KZread still processing it.

@-_Nuke_-

6 жыл бұрын

hahaha

@Katatawnic

6 жыл бұрын

In order to be early, you'd have to be here before the upload. You were on time, at best.

@namelessnick9791

6 жыл бұрын

kazzlim these comments I swear 😂😂😂

Somebody call Jim Carrey, the mask is gone!

@apple54345

6 жыл бұрын

Sssssssmokin'

3:47 props for including the redshift in the animation of the CMB photon!

The response to the last question was pure gold!

Fascinating topic, good on the researchers pushing the limits of our understanding.

Darn I was hoping the dark matter mystery was solved. But I guess that would’ve overtaken the news and internet long before this video was made.

@wesbaumguardner8829

4 жыл бұрын

Einstein was wrong. Mystery solved.

Small tweak here small tweak there, a small splash of so and so's constant and it always adds up to what you need it to be in the end. Nice one.

I love your responses to the comments! Keep up the good work!

oh shit not the missing mask mystery

@supersonictumbleweed

6 жыл бұрын

Scooby Doo and the Missing Mask Mystery!

Absolutely love this channel. Been waiting for this video since I read about this article a few weeks back. Please cover the new possibility that Flux tube knots gives our universe its 3 dimensions.

@alansnyder4104

6 жыл бұрын

I'm wondering if the flux tube knots being 3 dimensional is a good subject for PBS Infinite Series. ....

@Hav2bmor

6 жыл бұрын

Alan Snyder that's a good point. I was thinking more along the lines of the implications in inflation theory that they described.

Large scale structure of universe is amazing to behold. Good episode.

@10.45 Phew! I was worried about that. A relieve :)

Plasma in-between galaxies? I can already hear the Electric Universe priests going crazy.

@urinveisinfeksjon

4 жыл бұрын

I came to the comments sections specifically looking for them😂 Apparently they haven't seen this one yet... They would go bananas indeed..

"The Missing Mask Mystery" Notification squad knows what I'm talking about.

One of my favourite episodes! (amongst most of your other videos).

I truly enjoy these videos, Professor. Some I have to watch twice or more. Its a tad complicated.

"This is an entertaining video, hopefully we can further understand this supposed missing 'mass' sooner than later" Some idiot: first, omg im first guys.

@B-System

4 жыл бұрын

last

Missing Mask Mystery!

@Alazen.

6 жыл бұрын

D T corrected.

i liked the jib at string theory in the end :) made giggle out load

This channel is too awesome. Great video guys! Keep it up!

"We seek the Holy Grail!" "uh, we already got one of those--now go away!" ("i told them we already got one!")

The more we learn, the more it feels that humanity is rather early-ish on the stage. Maybe, adding to other factors, this is why there seems to be a paradox wrt having noticed alien life from beyond the solar system.

@xBINARYGODx

6 жыл бұрын

To be clear, I am referring to the point that we are rather early in the live of the universe being full of active-life stars.

@aidanclarke6106

6 жыл бұрын

BINARYGOD - Or aliens who existed were as dumb as humans and caused their extinction before having a chance to travel in their galaxy. Sad but possible. 😢

@karthikeyan020

6 жыл бұрын

Aidan Clarke Or the machines rose up and put them in a matrix

@TheRABIDdude

5 жыл бұрын

Nope. We're not. There are trillions of stars, many of which have been around for over 10 billion years. Our planet is not nearly as old, so the Fermi Paradox definitely still stands: if space-faring civilizations are possible (and ambitious/colonial), they should be everywhere by now.

@TheRABIDdude

5 жыл бұрын

Haakon Dahl I'm sorry to reiterate the obvious, but I feel a need to when commenters like BINARYGOD fail to understand it. Fermi paradox videos like this are overrun with comments which roughly equate to "maybe the reason we don't see aliens is because we humans are actually the first ones!" It's a complete misunderstanding of the paradox.

I never understand most of what is said but since i was a kid i have had a fascination with the universe so will watch anything about it.

Fascinating, as always! :)

MASK

@BlueButtonMasher

6 жыл бұрын

www.imdb.com/title/tt0088563/ M.A.S.K

When light get red-shifted by the expansion of the universe, it has the same energy or lost some? I guess that the energy stays the same and it is just spread over bigger distance. Otherwise, it would violate the principle of energy conservation. However, I'll rather ask than guess.

@aidanclarke6106

6 жыл бұрын

eloniusz s- In our current understanding, it seems that energy is actually lost and it violates energy conservation principle. There is an episode of Physics Girl about that.

@101Mant

6 жыл бұрын

eloniusz lower frequency light has less energy, from what I learned this really does violate the conservation of energy. Mostly what I've learned in physics recently is from KZread videos like this one so you may want a more reliable source.

@Slicerz717

6 жыл бұрын

Aidan Clarke From what I have read, it isn't 100% agreed upon that the energy is just lost! Some physics argue that it's lost as gravitational energy and some other ideas have been thrown around. However with this recent work in detecting gravitational waves has made me very excited for new understanding and discoveries that might solve some of these problems. Crossing my fingers.

@Mandragara

6 жыл бұрын

Energy is not conserved in an expanding reference frame.

@garethdean6382

6 жыл бұрын

Yes, the light has lost energy. This CAN be considered a violation of conservation of energy but does obey a broader conservation law. Energy conservation is not some law handed down by God; like all scientific discoveries it can be proven wrong at any time by strong enough evidence,e which the CMB and redshifting in general provides. In fact it's better than simple observation since, thanks to the work of Emmy Noether almost a century ago we know that energy conservation can only hold if the space that energy is in remains constant. If space expands or contracts energy conservation can break down. This happened before with matter conservation;once it was discovered that mass wasn't some fundamental thing but related to energy it was 'absorbed' by energy conservation, a broader conservation law. As such there is the concept of 'energy-momentum' sing 4-vectors where something similar to, but broader than our regular idea of energy is conserved. In a sense the energy lost by the CMB has gone into pulling the photons apart, fighting the minuscule curving of spacetime they produced and flattening it. If the universe collapsed back we'd see the CMB blueshift until it reached its original energy again.

Man these are great. Always happy to see the educational side of youtube going strong.

looooved this episode, great one!

The MASK is under my bed. I am going to wear it to a masquerade ball to give me some extra MASS.

What video can I watch to start understanding the stuff? because I always watch a video and then you recommend a video to understand and in that video u recommend another one and I get crazy

@Ouvii

6 жыл бұрын

Lukatos007 I'd recommend watching playlists created by this channel. The first video in a playlist might recommend another playlist, but at least the chain you'll have to search through is shorter.

@goodzilla9455

6 жыл бұрын

bigbenhoward man I just have one account kkkk

@goodzilla9455

6 жыл бұрын

Overkillius thx very much

@nicolaiveliki1409

6 жыл бұрын

Go to your local rez and fet some peyote... and THEN watch Spacetime

@PicoGirl

5 жыл бұрын

As big as space and as long as time are the made up theories to explain other made up theories, and calculations based on other calculations. There is no end to the theories, just a big black hole to suck us all in. Wow, how intelligent!

I love this channel! Thank you so much you wonderful nerds!

Well I am totally addicted to this channel now. I’ve been watching it all night.

Could this help answer where all the missing Lithium is?

@aidanclarke6106

6 жыл бұрын

aerozord - In Tesla cars? 😜

@garethdean6382

6 жыл бұрын

No, the same model that predicts the missing mass also predicts the missing lithium; not finding the mass may have provided a clue that the model was wrong, finding it confirms it and makes the lithium question more pressing. (Alternatively it may strengthen our conviction that the lithium 'is there' in some form, that some similarly unconsidered process may be responsible.)

I have some question related to your last video which I could not ask ... 1.Virtual gluon's lifespan is limited by the Heisenberg uncertainty principle....So does a real gluon have an infinite lifespan like regular photons? 2. delta e represents uncertainty in energy.so does a virtual particle that exists forever have infinite or any POSSIBLE value of energy? I know I am wrong somewhere ...but where? PLEASE ANSWER

@garethdean6382

6 жыл бұрын

1.) Being massless (The previous video made a mistake which they corrected.) a real gluon CAN have an infinite lifespan. In baryons however it experiences 'containment' which means they don't last very long on average. This has important ramifications for the structure of things like protons. Massive particles like the W or Z have a half life, their virtual versions have a SECOND half life that adds to this, meaning that while both don't (On average) have infinite lifespans virtual versions decay far faster. 2.) A virtual particle that can exist forever must have an infinitely precise energy. This value can't be just anything, there's no such thing as 'exactly half a particle'. It's either 0 or 1. If this value is 1 then what you have is something infinitely close to a real particle. If this value is 0 you have no particle or a virtual particle with an infinitely small energy.

@sudhanshubharadwaj3337

6 жыл бұрын

This value can't be just anything, there's no such thing as 'exactly half a particle'. It's either 0 or 1. If this value is 1 then what you have is something infinitely close to a real particle. If this value is 0 you have no particle or a virtual particle with an infinitely small energy....? I couldn't clearly understand what you meant by that.So could you please elaborate on what exactly is quantized?

@garethdean6382

6 жыл бұрын

In QFT particles are quantized, you have 0 particles, or 1, or 2 or... You can't have half an atom floating about. For virtual particles that exist a short time their energy is imprecise, it'll be sort of 0 and 1 and 1/2, it doesn't matter, they don't last long. But one that has existed a long time (say forever) must have an energy that spread that is stable, it must be near 0 or near 1 or near 2... Ones that try to be near 1/2 aren't stable, they just don't work.

ive gotta watch you agaain couple of times, lost you midway through . great video! (Y)

Great work. I love these videos.

Seriously: The found that the most distant super massive black holes all have the same spin! this is immpossible! Could it indicate another force not yet known?

@TiagoTiagoT

6 жыл бұрын

That has happened? Got a link to something about that?

@TWJfdsa

6 жыл бұрын

www.businessinsider.com/synchronized-spin-of-black-holes-2016-4

@TiagoTiagoT

6 жыл бұрын

Interesting, thanx.

@nmarbletoe8210

6 жыл бұрын

that is super cool. "Scientists believe there are a few different explanations for this phenomenon, ranging from cosmic magnetic fields, fields associated with exotic dark matter particles, or even cosmic strings."

@TWJfdsa

6 жыл бұрын

look at it this way- these supper-massive black holes are on the perimeter of the observably universe. They are all spinning the same way at the same angle. They are the spinning tops keeping our universe stable! Yes i just came up with that- tee hee hee

Missing...BARRYons? Maybe flash is trapped in the speed force again :P

@BiophysicalChemist

6 жыл бұрын

More like trapped in the friend zone.

@NeroPiroman

6 жыл бұрын

he came out of it in season 2

@abyssstrider2547

6 жыл бұрын

Nero Piroman "came out"

@user-nf3hh8kn5r

6 жыл бұрын

please stop

@rickc2102

6 жыл бұрын

I was going with Barry White, myself, because the universe is mad sexy.

For a second, I thought you were going to be talking about baryon asymmetry and I got really hyped when you said we may have solved it.

Great episode! I'm not sure what it is, but I feel like I understood this one better than most others. Maybe it's just because it was pretty easy to visualize this in 3D space, rather than being limited to, e.g., graphs of relation between space and time.

Last time I was this early the earth was still flat

@garethdean6382

6 жыл бұрын

Whaddya mean 'WAS'?

@sebastianelytron8450

6 жыл бұрын

Gareth Dean He's probably deluded, believing the crap so-called "scientists" say about the earth being round and all......

@centerkungkanil4730

6 жыл бұрын

Sebastian Elytron It's a joke,it doesn't MATTER(srry)

What if dark matter is just time building up, since it once contained mass it still maintains its gravity. And since we observe time as passing from past to future we can no longer see the light interactions that have already happened, this would be like the expansion of the universe. Just a thought

@KaentukiTheFuki

6 жыл бұрын

tjzx3432 interesting...

@tjzx3432

6 жыл бұрын

YT user 597863 I was thinking that since entropy must increase, in theory the vacuum of space would be the net function of past, present, and future expansion positions. This could account for the average temperature of the vacuum being as cold and clumpy as it is, and concluding with its eventual heat death of the universe.

@Mandragara

6 жыл бұрын

Great. Express it in maths.

@karthikeyan020

6 жыл бұрын

tjzx3432 But that would cause the universe to grow linearly and not accelerating growth. But if we account for the dark matter being included in that time, it would grow exponentially. But I don't think that explains the growth pattern of the universe. Because if it did, someone would have noticed it and put a paper based on it.

@suramaypidara

6 жыл бұрын

tjzx3432 wouldn't it violate the unidirectional flow of time in this universe.if ur theory is true then dark matter should be small event horizons where u can see time in both directions as it wouldn't continue to be a unidirectional quantity

Guys let's help PBS space time make more awesome videos. Please click on all the advertisements you see on this channel. I already do that. Keep going PBS you rock!

Thank you Family that is beautiful and your research is going in the right direction, peace and love, Doug:)< 3.

if we have an magnetosphere, and even an heliosphere, would we have an galaxisphere?!

@garethdean6382

6 жыл бұрын

Yes, though each time the effect lessens; our magnetosphere involves greater forces than those at the edge of our heliosphere and galactic magnetic fields, though large, are comparatively weak.

The plural of "nexus" is not "nexus-ease"!

@paulcoy9060

6 жыл бұрын

"nexi" ? (pronounced nex-eye)

@geminireaperhd8648

6 жыл бұрын

What is the plural of nexus, all knowing one? Bestow upon us mere mortals your grand cosmic knowledge!

@diegobrand6970

6 жыл бұрын

Actually if you're going to try to follow Latin declension like that the plural would just be "nexus". It's a 4th declension noun. However, in this age where not everyone learns Latin, you can't really expect folks to get all the classical plurals right. "Nexuses" is good enough.

@fakeItRight

6 жыл бұрын

Based on the latest findings, it's actually "obnexus".

@qc1okay

6 жыл бұрын

Correct, like biases and processes, nexuses (at 5:38 in the video) has a plain old schwa-sound plural, despite all the KZreadrs mispronouncing them with long-E. They mistake these plurals as Latinized (like analyses), thinking they'll sound more educated. Nope. Just look up any plural you're not sure of in a top dictionary. If no irregular plural is listed, the plural is a plain old -s (claps) or -es (classes). Even if a plural is shown, it is pronounced regularly unless it has a pronunciation showing otherwise. Look up nexus, bias, and analysis at m-w dot com to see examples of how this works. Interesting that even though m-w tries to show pronunciations of singulars and plurals that often are mispronounced, the mispronunciation of biases is so recent (mostly due to KZread, probably) that m-w hasn't noticed it yet and thus doesn't even show a plural, much less a pronuciation of a plural.

Matt O'Dowd has a bright career in audiobook performances ahead of him.

I'd love to see an episode on the problem of where all the anti matter is. I was under the impression that for every particle made in the big bang there would also be an anti matter particle yet scientists have not detected it yet and it hasn't encountered matter yet or there would be particle annihilation. This problem of finding anti matter might also somehow answer some of these other unresolved issues such as the one presented in this video.

You're basically a smarter Russell Brand

@SuviTuuliAllan

6 жыл бұрын

idk Russell Brand is pretty smart

All gAstromoners know that the dark stuff is soy sauce

@ethantoth6601

6 жыл бұрын

Nah bro, it's the lamb sauce. Someone needs to tell Gordon we finally found it.

@FaithNoMore223

6 жыл бұрын

Is this a John dies at the end reference? Lol

Love this channel, thank you.

I'm amazed by the number of subs who imagine ''I fell asleep'' is somehow a bleedin' compliment. If you fell asleep you were either bored or using information as though it were merely noise. Falling asleep ''in class'' isn't cool.

I wonder if this has ever been brought up before, but while discussing dark matter and Dyson arrays/spheres me and a discord group I'm in came to the question: "What if dark matter is just all the stars some ancient type 3 civilisation has encapsulated and is capturing all the energy from? Could not in theory such a civilisation capture everything down to the smallest scraps of infrared?" Kind of a harrowing thought on the explanation to dark matter. Though in gravitational lensing, and eclipsing of other stars and bodies could give that away, the same problem with the dark matter just being quiet little black holes smattered through the cosmos.

@jpoconnor2857

6 жыл бұрын

Perhaps. The Blink-182 guy was on JRE today saying he was part of a secret government program that was going to be releasing UFO information

@garethdean6382

6 жыл бұрын

Well no; for several reasons. First is emissivity, that would suggest that the civilization isn't producing any waste heat, and the laws of physics say if you're not doing that you can't use the energy. The spheres would have to emit as much energy as the star they contain. We assume this would be heat energy, IR and we are in fact looking for such signals now, but it could also be radio waves if they were more efficient. The star is pumping out energy, at some point the spheres must too. Secondly dark matter isn't clumped like stars are, it forms a sort of 'halo' around galaxies, almost spherical in shape. This suggests whatever it is isn't stars. Thirdly it's present in a massive amount in all galaxies we've looked at; what are the chances that a civilization arose to do that in every galaxy we see? To nearly the same extent, no exceptions? And why haven't they taken ALL the stars? Why leave 10%?

@kauske

6 жыл бұрын

Gareth Dean Already covered the problem of heat. Chances are if some civilisation could get to the point where building dyson arrays was trivial, they may find a way to minimise energy loss to the point we just can't detect it. Alternatively, we can detect it, but it's lost in the noise of the CMB and other radio grumbling from the cosmos. And why not take all of the stars? Many reasons, they could only be interested in red dwarfs for their longevity, they might not be "finished", Maybe they specifically ignore inhabited worlds. It's mostly just a thought experiment anyhow. :P

@garethdean6382

6 жыл бұрын

Energy loss isn't the problem, the basic laws of physics state that you have to move energy if you want to use it. I can stockpile dynamite all day long but can't do anything without exploding it.There's even a limit on how little energy you can expend flipping a single bit\state. So this civilization is going to have to take energy from their star, make it do work and dump it somewhere cooler. Since the inside of the sphere contains the star the only option is outside, into space. Otherwise the sphere will heat up until it reaches equilibrium, a hot 'heat death'. Moreover, unless they destroy the star somehow they'll have to vent as much energy as the star produces, otherwise again the 'excess' heat will build up inside the sphere until it gets as hot as the star (At which point the star will dissolve.) The upshot of all this is that the spheres should be emitting a lot of energy, since it's not in the form of light it should be in the form of infrared, microwave or radio. Each should be incredibly obvious, even if purposefully disguised at the CMB (Since there's more stars along the band of the milky way than other parts of the sky.) Isolated dyson spheres could avoid detection but not if they are even equal to the current visible stellar population, let alone if they exceed it several times over.

Mask*

Awesome, good to hear that the stars will continue to form.

Great episode. Please do a video on Lanakea and LMC

Mask... disable your autocorrect, PBS 😂

Sounds like we're going to run out of electrons

ONE thing I like about this guy, he does not consider dark matter and dark energy, the samething, practically, all other scientists do. This guy is honest, most Physicist aren´t... This guy is not involved in religion, like Neil Degrase Tyson, and not involved in politics, like Michu Kaku, the guy in the video, is straight up Physics.

All 3 (QED + QCD + EWT = SM) are QFTs. Both QFT and GR individually and independently include SR. Anything that stretches space is included in DE. Anything (other than visible/known/SM particles) that bends/curves space is included in DM. (Acronyms: Q=Quantum, EC=Electro/Chromo, D=Dynamics, FT=Field Theory, G/S=General/Special, R=Relativity, D=Dark, M/E=Matter/Energy). M-Theory includes all 5 super-string theories which generalize the old/obsolete Baryonic String Theory. So, nearly all physics is covered with a simplifying sub-set of M-Theory + SM/QFT + GR.

anyone know if matt is married? i wanna have his babies!

@pendletwinsong

6 жыл бұрын

michelle mcveigh same.

@tomwohler6553

6 жыл бұрын

michelle mcveigh hopefully not for dinner^^

@geminireaperhd8648

6 жыл бұрын

Crib midgets are a trap.

@NUFC_1

6 жыл бұрын

He is gay

Who will be the first to miss the like button, hmmm

@TheJefferson1998

6 жыл бұрын

Jakob Saadbye oops I missed.

@DANGJOS

6 жыл бұрын

Just correct it

@YadraVoat

6 жыл бұрын

You're the first person I've seen point out that's probably where some of the dislikes come from on all popular videos! :D

@NUFC_1

6 жыл бұрын

This video is BS, so I disliked it

A very interesting video, as always.

The end bit was so cool, If the majority of visible matter is actually still feeding into galaxies.

First.. i don’t care that you don’t care.

@ZackLee

6 жыл бұрын

Krabbel8beiner i don’t care that you don’t care that i don’t care

@willoakley847

6 жыл бұрын

Nigga no one cares

@MrRobinhq

6 жыл бұрын

I actually care that you're first, which is why I reply: You done gud son, Mommas proud of you.

@billiondollardan

6 жыл бұрын

I do care. I care a lot

@sogerc1

6 жыл бұрын

257th

The theories are not solid. Only parts of them are. Someone needs to hire a writer with a 3 digit or better IQ.

Hey Matt, recently I watched this lecture by Erik Verlinde in which he introduced his Entropic Theory of Gravity which describes gravity not as a fundamental force but rather as an emergent behavior from statistical nature of quantum mechanics and the holographic principle at interstellar distances. Do you think you can make an episode about this since we hear about Dark Matter all the time and this would explain the universe without it? Thanks and I love the channel!

those illustrations of the filaments moving through galaxy connectors looks just the neuron pathways connecting different parts in our brains!