Most Galaxies are Moving Faster than Light!

[@blueckaym]

"... some galaxies should be moving away from us faster than light! But how is that possible?! ..." "This was made possible by generous supporters on Patreon."

[@sadkritx6200]

Those supporters are getting too powerful!!

[@Robert_McGarry_Poems]

It's like, if I'm riding a purple polkadot dragon at the speed of light... And a yellow submarine passes me at the speed of light... That is 🚫NOT🚫 2x the speed of light. That's like, relative to the yellow submarine my purple polkadot dragon is standing still. If two events are not causally connected they can be moving at more than the speed of light away from each other. The shape of the 3d space, that guides the dragons and submarines, is kind of hard to wrap brains around so we use 2d representations. Curves... Like two dips on a graph moving in opposite directions from one another at the speed of light. At the top of each dip is some sphere. Each is released at the same time and rolls to the bottom of their respective dip. Relative to each other, the objects moved faster than light, right? In that case, it doesn't matter. No information is being exchanged. They do not move faster than light in their local system, the dips.

[@blueckaym]

@@Robert_McGarry_Poems Ok, but if your purple polish dragon flies at the speed of light by a intergalactic bus-stop, and at the same the yellow submarine passes your purple polish dragon at the speed of light, then at what speed the yellow submarine passed the intergalactic bus-stop?

[@thesecondslit1710]

hahahahahahahahha....

[@mmercier0921]

They are misunderstanding the relationship between time and light and space. The galaxies are not moving. The space between them is expanding exponentially. Time, light and matter are actually waves reacting to the expansion of nothing. Nothing observable moves everything that is. That is all we can see now.

[@Bodyknock]

Oooh, throwing some red-shifted shade at Veritasium!

[@thomashenderson3901]

Takes some confidence to disagree with Derek!

[@rodhenderson690]

@@thomashenderson3901 good he's a gronk!

[@rodhenderson690]

@@Pobodies_Nerfect Derek is a little arrogant and the fact he's not following Nick on any platforms annoys me because it's passive aggressive narcissism.

[@DobesVandermeer]

Nerd battle! Fight fight fight!

[@Kislay11]

Am I the only one who didn't get what was the fight/disagreement here from O don't even know which veritasium's video?

[@3Chandresh3]

This guy is so underrated He explains complex problems with such ease

[@acrobatmapping]

No, he made it more complicated than it needed to be. All he needed to say was that space itself can expand faster than light, but light must move within that space at the speed of light.

[@3Chandresh3]

@@acrobatmapping make a youtube channel, say it yourself. No one is stopping you mate.

[@Mikey-ym6ok]

@@acrobatmapping yeah I noticed I’m always more confused after finishing his videos and don’t feel the answer is ever really answered

[@Anthony_Matabaro_3D_360]

@The Chandricle, I couldn't agree more

[@thesecondslit1710]

@@acrobatmapping I understand your point. However, consider most viewers are not actually scientists for a living, and a great deal of stuff that 'goes without saying' for some of us (me sometimes) is not really that clear, and confirming or even explaining in depth (even being a lil' bit redundant sometimes) is actually quite useful for those who grasp the logic but not all the formality ('because Calculus'... ). So, I politely disagree with your general statement. I deem Nick really a positive influence towards understanding in this weird world we live in. Cheers !

[@playgroundchooser]

4:37 Ah yes. General Relatively. I served under him in the war. Good man, very flexible in his views. It's like he had this gravity about him. 🇺🇲🇺🇲

[@ScienceAsylum]

😂

[@ulti-mantis]

And to think he started his career as a humble specialist

[@traillesstravelled7901]

I'm a dad and approved this comment 👍

[@priceringo1756]

No. He ALWAYS threw you a curve. I swear you had to have a math degree to understand him.

[@dritemolawzbks8574]

Did you serve in the trenches with Schwarzschild?

[@Kevin_Street]

You're a rock star in this space, Dude. I didn't understand everything you said here but I'm going to watch the video again and again until it all clicks. Your videos are like a super-rich umami stew of science. Where many other channels use the weak broth of metaphors, you actually explain things in depth and with reference to meaty equations. (Even if, thank god, you don't derive them.) You _really_ answer the questions so we learn something, and that's much appreciated.

[@nokian9005]

You're my favorite science tuber. You're the best at explaining things. You have the mind blow of vsuce, the intelligence of Veritassium, you're as unboring and easy to watch as Bill Nye, and your shows have the creativity, effort, and entertainment value of Alton Brown's Good Eats.

[@Baul_Punyan]

To me, the white lab coat makes the presentation seem less personal and more academic than I prefer. The classroom/teacher vibes tend to harden my mind. Whereas, the less cheesy yet humorous and casual rawness of vsauce gives me a squishy anxious free mind. But my wife has a hard time keeping up with the tangents Michael goes on, relative as they are. To each thier own I suppose. Lab coats stress me out though. I hope my criticism is constructive as intended. I mean no disrespect.

[@BertGrink]

I have an analogy which helps me wrap my head around the idea of the expanding universe: I think of it as a raisin bread, or rather, the dough before it's baked. While the dough is rising, the raisins contained within the dough move further apart from each other as a result of the dough expanding, but they don't move with respect to the immediate surroundings.

[@istvanszennai5209]

the problem with that analogy is tho, that it assumes an extra dimension (the inside of the bread), whereas in GR there's no extra dimension

[@williambrown1095]

Ah, for the old days when two scientists would become angry, duel, hitting each other with their slide rules.

[@GlenHunt]

Now they burn holes in each other with high power lasers

[@TheNasaDude]

BONK go back to sciency jail

[@luantuan1653]

Tycho Brahe lost his nose.

[@doncarlin9081]

My dad was telling me when the mission controllers were discussing the flyby path for Voyager 2 to Neptune, it was full on vitriol. They had to agree on the path from Jupiter to Saturn to Uranus, but Neptune was open.

[@shubhronildutta1563]

The Science Asylum uploads: Me: *Fast Fast* Also video: *FAST FAST*

[@Cappuccino_xoxo]

And the first thinb he talks about is light is actuall pretty slow. Lol

[@sebastianbyczkowski4481]

@@Cappuccino_xoxo Yeah. It is preety slow in cosmological scale or even our solar system scale.

[@antipoti]

The wedding (?) photo is so lovely! And the content has outstanding quality, as usual.

[@franklintangelo3456]

Nick: * does anything * Nerd clone: WeLL aCtUaLLy

[@whoeveriam0iam14222]

well actually it's the same guy in a different costume for the video

[@TheNasaDude]

@@whoeveriam0iam14222 you fool, don't underestimate Nick's cloning ability!

[@judgeomega]

id be happy with nerd clone doing a few videos

[@franklintangelo3456]

@@judgeomega me too.

[@localverse]

Where it turns out, that clone was the real Nick and we've been watching one clone who hadn't realize he's a clone

[@kylefillingim9658]

I don't always agree with conclusions drawn, but i really appreciate how much effort you make to be as correct as possible, especially when it comes to how terms are defined. I find your chanel to be one of the more insightfull science shows around. keep up the good work

[@drparadox2776]

So, basically what is moving faster than light isn't actually moving faster than speed of light. It just seems like that because of scaling factor.... This was a really great video as always!

[@mrkitty777]

I feel like Schrodinger's cat, I both can be 🥺 or can be 😊 depending I am both until someone observed my innercat.

[@drparadox2776]

@@mrkitty777 good one 😂

[@mrkitty777]

😊 was observed. So the other kitty of schrodinger inside me was 🥺, gotta feed a hamster. Ooh and I watched many cat videos so when you get cat food ads at youtube too, it was probably this schrodinger cay equation. 🤭

[@pauldacus4590]

Like beer, this dude is an acquired taste. *Which I've acquired.*

[@Robert_McGarry_Poems]

Mmmm, beer! 🍺

[@xanderunderwoods3363]

Yummy

[@PatricioHondagneuRoig]

12:08 the ad transition was smoother than the surface of a spherical cow

[@humbledaoist]

Holy shit, a Brasseye reference? My man!

[@Evghenios79]

was it faster than the speed of light though?

[@tmrogers87]

Excellent as always. You provide a really interesting perspective on some concepts a lot of science educators have tackled over time

[@directoryerror6653]

I love seeing science channels challenge the claims of others, a good reminder to take all info with a grain of salt, not everyone can be right all the time and some debate really shows the depth of a subject

[@bnice1374]

I have been steadily going through your video's over the past few weeks and I can't understand how you haven't hit a million subs yet. Your video's are very well crafted and easy to understand for people of most levels and I use them as a start off point with my little sister for her school subjects. I even started referring people my own age to specific video's to provide them with explanations that I could never be able to make as simple as you do myself. Goes to show that I have much to learn, because as we all know, if you can't explain it simply, you don't understand it well enough.

[@punditgi]

Amazing explanations. Thank goodness for you being so lucid! And the photos of you and your wife are so beautiful and precious. Thanks for sharing! 😃

[@priscillaallen5276]

This video is chock full of dense data. Wow, so brilliantly explained, nothing overlooked. Nothing on YT comes near. Nobody does it better!

[@leapdaniel8058]

One thing I should clarify that confused me a lot when I first learned the concept: The co-moving frame isn't just one reference frame. It's a whole set of reference frames at different points in space. Two galaxies spatially distant from each other will have different co-moving frames.

[@finspin8577]

This makes a lot of sense because you can only see light that is within the expansion limits. Once photons get beyond a certain distance the expansion of the universe is happening faster than light so no information can be seen. The expansion of the universe itself limits what we can see with our telescopes.

[@ScienceAsylum]

Exactly!

[@anonymoususer7663]

The further out we look, the further back into the past we are also looking. It's not the present we're looking at. That itself is a kind of event horizon where we can't see what is happening present day, only the distant past.

[@finspin8577]

@@ScienceAsylum But there is another phenomena that counters this for real in the Quantum realm. While quantum mechanics has the uncertainty principle. All matter since the big bang has been in superposition with itself, as matter spread out across the expanding universe each particle was reacting to this superposition instantaneously. Even beyond the photon exchange barrier. e.g. Tachyon being a single particle infinite velocity that makes everything. Others say lots of fields vibrating "Strings", some new guys say its Axions or a lower plank length reality. The randomness of quantum mechanics is more like the recursion of ripples of fields permeating. Each deterministic, but their interference, is random at the smallest levels. Determinism (Macro reality) is somewhat weird because "this information" cannot translate into the "lower energy" realm we exist in.

[@mickblock]

As many years as I've been learning about and contemplating cosmology, (physical science in general) its always a Science Asylum video that nudges me past a stuck point.

[@localverse]

Where were you stuck?

[@parmenides9036]

More rants please! That was the best part! 😋 Your actually the best Educational science channel on youtube btw!

[@joaquinel]

Maybe he discovers the lucrative "react" thing. The last I saw, a video of a Korean girl reacting to a video of a Chinese guy reacting to a video of Jamie Oliver making egg fried rice. Fun, and viral.

[@localverse]

@@joaquinel Maybe we fans can start making react videos to Science Asylum clips to give his channel a boost 🤔

[@localverse]

Like, 'Son's reaction as clone's head explodes from insight overload in Science Asylum' And special effects the kid's head explodes after the clone's like a chain reaction

[@patinho5589]

This and PBS are the best two I’ve seen. And that maths one called something like BlueBrown. Oh and that one from Sabine.

[@PapaFlammy69]

Hey

[@NovaWarrior77]

Hey. Wait you didn't mean me? I'm offended.

[@ScienceAsylum]

Hey 👋

[@YounesLayachi]

Wassup 🔥

[@narfwhals7843]

Oy!

[@foldr431]

Omg it’s senpai greeting senpai 😍

[@Lucky10279]

"Don't get on my case, ok. I don't get to name these things." Tell me about it! That's how I feel whenever I'm explaining "imaginary" numbers to someone.

[@localverse]

This video did a great job helping visualize imaginary numbers and referred to a proposal for renaming them as 'lateral' numbers m.kzbin.info/www/bejne/imeXaHZ9qNqCjLc

[@pravinrao3669]

I disagree. I see numbers just as magnitude. I see things like -5 , i i^z as a magintude and some extra information we are giving to a function. example -5 magnitude is 5 and the info (whenever this object encounters a + or - sign use the opposite sign. ) 5i == magnitude is 5 and whenever this object is squared give it a negative sign. of course we can just define any number. Raising i to any power is just dependent on how we define raising power of i. But i don't think we should call them numbers. I see math just as logical operations they are objects we use to represent logic. I don't think of them as numbers. I just see positive rational numbers as numbers. Otherwise why aren't vectors numbers. Because every argument we can use for imaginary number can also be used for vectors

[@Lucky10279]

@@pravinrao3669 The word "number" us admittedly vague, but so are lots of words. Try defining "sandwich" or "game" in a way everyone agrees on and you'll see what I mean. But that's not the issue. The issue is that calling them "imaginary" is silly because because it implies they're somehow less "real" than other numbers. It'd be just as silly to call them "imaginary vectors". But we're stuck with the term for historical reasons.

[@thehousehack]

All numbers are imaginary. They are a human construct.

[@Lucky10279]

@@thehousehack Yes, I agree. That's why it's silly to call one type imaginary as if they were somehow more imaginary than the others.

[@XEinstein]

0:49 YES!! We've got a fast fast ladies and gentlemen! Now I'm still excitingly anticipating the next superzoom, Nick!

[@raghu45]

Perfect! Thx for the clarity. Now I understand that it is not an entity has been "pushed" to go faster! It is the more primitive concept of space itself that is taking all the items, at and beyond a critical distance, more and more away from each other at a rate faster than the speed of light!

[@alone-vf4vy]

Plot Twist, we're also as fast as them from their pov

[@ScienceAsylum]

Indeed!

[@josebarria3233]

Ive never think of that

[@Anthony_Matabaro_3D_360]

Yes, excellent point

[@Robert_McGarry_Poems]

They are all standing still, well relatively speaking...

[@__-fi6xg]

Im fast af boiii

[@AlleyKatt]

Love the happy-happy picture-covered refrigerator in your kitchen. Loved the video lesson. I've "known" much of this for quite some time, but you made a lot of it snap into understanding. Thanks!

[@Biogenesiss]

In this episode became clear to me how much you improved as a science communicator Ps: Nerd clone FTW

[@SkywalkerAni]

Fascinating. I've heard both that we can't go beyond the speed of light, and that the universe was expanding faster then the speed of light. I've never giving this much thought, so this was a great topic to learn more about.

[@philochristos]

That was a really Lucid explanation.

[@edthejester]

That's an awesome wedding pic

[@Lucky-df8uz]

Your channel is the gift that keeps on giving, happy holidays all you asylum watchers!

[@rome8726]

This video is the one that had the most effect on my understanding. It's shocking. 🤯

[@bcast9978]

"Peculiar" velocity makes sense since peculiar would denote exclusively to one's self.

[@ScienceAsylum]

A few other people have mentioned this. I had no idea there was a second definition for the word "peculiar." 🤯

[@FuturePluperfect]

The Science Asylum It's the original meaning, something to with cattle belonging to a certain place. The second, modern, usage means "foreigners have strange ways" or "we don't do things like _that_ around here, thank you very much".

[@zozzy4630]

@@FuturePluperfect Yup! It comes from the same root as pecuniary ("having to do with money") on the notion of cattle and other property both being a pecuniary measure of wealth, and peculiar to the owner. "Fee" comes from Old English feoh ("cattle") the same way, and the word cattle itself actually evolved in the other direction.

[@walterbrown8694]

He is absolutely correct - Since most galaxies move faster than the speed of light, that is the reason we cannot see them - every time we try to see one, voila - it's gone before we see it. Time for a visit to the optometrist - maybe he can help in the galaxy vision department.

[@nerd8342]

Science asylum uploads Me:faster than light click

[@LuisAldamiz]

You cosmological cheater!

[@nerd8342]

@@LuisAldamiz u can say so...

[@nerd8342]

@Jani Akujärvi i hope i dint break causality

[@__erroneous__]

I love the fact you like to questioning everything ....and some times it causes disagreement and you are not scared to say that ....you are true brave scientist 😄😄😇

[@storm14k]

I'd seen that Veritasium video and something just didn't quite sit right when I finished. I think you explained it. I need to watch it again.

[@ScienceAsylum]

The things he said in the video were all at least _approximately_ true. He gets away with it because he kept the distance steps small.

[@VinayakYSandimaniEC-ECB]

Which vedio of his are you talking about Can I know?

[@anon3308]

Yeh which vijeo? 🙏

[@thenapdoreast4633]

keep fighting the good fight Nick, some of the best educational content I've seen!

[@jhill4874]

This is the most understandable explanation of this stuff I've seen! Thanks!

[@twothreebravo]

I have so many questions about Cosmology but I don't even know where to begin. For now I'm just going to keep watching and learning until I know enough to ask a question.

[@hallod1]

This channel deserves way more subscribers!! Great science and sense of humor.

[@fourkings7897]

Maybe he doesn't care much about his subscribers or viewers... He's happy as long as he get patreon support..

[@thesecondslit1710]

Indeed. Spread the word !!! I do it whenever I can...

[@CallsignJoNay]

Best science channel on KZbin.

[@ativjoshi1049]

Holy shit, the transition to the ad was smooth :)

[@LuisAldamiz]

Sharks are that way: now you don't see it, now you are dead meat.

[@thesecondslit1710]

@@LuisAldamiz hahahahaha

[@thesecondslit1710]

Best smooth ad transition ever, BTW ! ;)

[@corydharma]

That Veritasium call out hahaha nice.

[@TheBrunchina]

pls sir, may i have a crumb of context?

[@it6647]

@@TheBrunchina Veritasium recently made a video about these shifts And Nick disagrees with a point he was trying to make

[@corydharma]

@@TheBrunchina Science Asylum is gently "well, actuallying" Veritasium's video from a few weeks ago "What actually expands in an expanding universe" (i think its that video).

[@TheBrunchina]

@@corydharma thanks

[@LTMarhman]

How is this channel not have 2+ million subscribers during these times! I would have eaten up these videos way back when I was in high school/undergrad!

[@rickd1412]

I have to listen to these videos 3 or 4 times before I finally get it. This one, maybe 7 or 8 times.

[@XtReMz98]

You surpassed yourself in this one. Answered my questions via Nerd Clone as they came to my mind, gave insights on how the grid connects to special relativity and threw a lil’ jab at veritasium, what’s not to love?

[@SB-qm5wg]

9:06 ADORABLE!!

[@bjm6275]

Interesting, I never heard a scientist explain that galaxies are carried along by space. This is different than combing against space or the fabric of space which does not allow light speed by objects of mass. Excellent points.

[@KeithCooper-Albuquerque]

Another great and funny video! Thanks for the humor, the crazy, and the learning, Nick!

[@Nikolausi26]

Christian Doppler (Physicist) and Wolfgang Amadeus Mozart (Pianist) are both born in Salzburg in Austria only a few kilometers away form my home town.

[@dipolifom]

Noone mentioned the causality examples and how great it was. Let me do it now! It was amazing! Also looking for further wife reacts videos. Whatever you do, they are always great

[@sppindrpurple1981]

I was trying so hard to understand what you were trying to say and couldn't even begin to really start grasping it until you said it's a change in scale of expansion versus a change in scale of distance

[@arborinfelix]

Please make sure that before we point a laser to the Moon that we have set laser to stun.

[@kristyanne719]

That's phaser, not laser. Lasers don't have a "stun" setting.

[@arborinfelix]

@@kristyanne719 Live long and prosper

[@waynedarronwalls6468]

The point about the speed of light is that it indicates the vastness of interstellar space...if something that travels at approximately 186,000 miles per second, can take what is known as a light year, or the corresponding distance from one place to another, shows us just how unimaginable the size of the Universe is...

[@ZagrosŞêxbizin]

“Fast Fast” is my favorite youtube phrase. FAST FAST, FAST FAST, FAST FAST! Where is my FAST FAST compilation!?

[@mldag1678]

right??? we desperately need one of those lol

[@ZagrosŞêxbizin]

@@mldag1678 we need one and we need it FAST FAST.

[@MrMarkwill62]

Great video... Little by little I will optain my KZbin Cosmological Degree through The Science Asylum 😎

[@altuber99_athlete]

That "fast-fast!" has become a meme

[@uninspired3583]

The image of Nick's face firing that off jumps to mind every time I come across something that's quick. And it makes me smile almost every time

[@namaanda5349]

Wait... It did!?

[@anthonyborrazas6289]

Thank you so much.... So saved.... I'm tired of hearing there's no speed past the speed of light......

[@justmehere_]

this channel makes me question my true amount of scientific literacy, aka i feel too dumb to understand wtf the universe is

[@leroidlaglisse]

You're in Dunning-Kruger's Valley of Despair. Same here. It actually means we're progressing in our understanding. Keep it up. The other side of the Valley is worth the climb!

[@feynstein1004]

Lol sometimes I get that feeling too but I've increasingly realized that all of physics (and math too) can basically be reduced to two things: entities/objects and their interactions. That's basically it. Seen that way, the universe is just a set of physical objects interacting with each other. The speed of light, or rather, the speed of causality, just happens to be one of the rules of interaction: no objects shall interact with each other faster than c. Galaxies can travel FTL because they're not interacting with each other, but rather with spacetime. But then again, spacetime too can be considered an entity, which should forbid this.....but perhaps we got the rule wrong. Spacetime is a different kind of entity and can interact with the other kinds (matter/energy) at any speeds? But matter/energy can only interact with itself at c. Damn, I see your point 😂

[@LuisAldamiz]

You actually understand the universe well enough, else you'd be dead. It's just that you understand it locally and not cosmologically enough, but it happens to the best minds, so worry not.

[@feynstein1004]

@Irish Jester Aren't forces just different ways of interacting with each other? I mean, the strong and weak forces are called interactions for that very reason. EM is just interaction between charged particles through virtual photons and gravity is the interaction between matter/energy and spacetime. I don't see how that negates my point.

[@icetea52]

I couldn't put it better myself. Every single time before watching señor Lucids vids I'm like "I have a grasp of the thing he'll be talking about" and every single time after señor Lucids fantastic videos reality hits me with: "nope. just nope". Won't stop me from watching but damn...

[@xanderunderwoods3363]

I love the "We are the exception" Mongolian T-shirt!!! :) Crash Course is awesome just like this show.

[@Mr-Garibaldi]

7:59 - A new galaxy materializes right next to us. Quantum Tunneling confirmed.

[@manishgant]

Came here for this

[@jskratnyarlathotep8411]

i noticed that too, they're keep materializing here and there all the time \0/

[@jojox1733]

Boom tube

[@Belikewaterbud]

As always amazing video my dude thank you

[@definesigint2823]

_Really happy_ about this video recommendation; I suspect I'll be re-watching this as I get more educated.

[@SlimThrull]

This is the only channel I've found which could explain quantum spin in a way that I could better understand what was going on. I'd suggest watching the rest of the videos here. They REALLY are easy to get even without a science background.

[@localverse]

@@SlimThrull Which video helped you understand what's going on with quantum spin? (My vague notion is that quantum spin is merely related to which direction the particle travels in the magnetic pathways of the machine doing the measuring)

[@SlimThrull]

@@localverse Specifically this: kzbin.info/www/bejne/qXOUdoN9otWtr8k I'll admit that I don't REALLY get what's going on, but the video gives me a much better picture of it than any other media I've found does.

[@rogerman65]

I actually for the first time understood absolutely totally everything in a science video, including the math. This means that I am not stupid, I am merely an Aspie. What a relief!

[@TheNasaDude]

You open the video thinking you somewhat know the answer Then Nick steps up to the plate and sends you out the stadium A lovely video, I particularly liked the personal referneces and the pace of exposition

[@wordysmithsonism8767]

Thank you. I am beginning to understand this.

[@drktronic]

Ok, so if two things of mass eventually come together over time in space due to their own gravity, doesn't that mean once the universe is done expanding it will all come back together again?

[@ScienceAsylum]

It _wants_ to, but the expansion is too fast. The expansion overpowers gravity at the largest scales.

[@stefaniasmanio5857]

Omg Nick here you went really over your wonderful ability of explaining.. you are a blessing upon us…

[@ScienceAsylum]

Thanks! 🤓

[@adityachk2002]

We needed this so bad ( a new. Video)

[@rockbore]

I feel like such a boss of science when i watch this chanel. No wonder, i actually understand some weird stuff now. Thanks!

[@ScienceAsylum]

Happy to help 🤓

[@adityavardhan6606]

E=Mc² : I am the most famous equation . a²+b²=c² : am i joke to you?

[@erenleonhart717]

Also quadratic formula (-b±√b²-4ac)/2a : Kids

[@xyz.ijk.]

Another great video Nick. Thanks for this -- it was particularly enlightening (sorry), and I'm really impressed with how the graphics have changed over the years ... much more powerful now.

[@ScienceAsylum]

Thanks! I've worked really hard to improve my animation skill.

[@priceringo1756]

We know who He Who Must Not Be Named is!

[@kca698]

Smoothest intro transitioning into that ad

[@Plash14]

Clicked on this video faster than anything else :D

[@samuelgibson780]

This is an incredible channel. Thank you!

[@MrBenenator]

"The cause must occur before the effect" *Quantum physics laughs with sufficient energy to pay the resulting debt*

[@SanPendro]

Watching your educational videos is as close as I ever came to the vulcan skill domes :)

[@grouchygeek4176]

THIS is the answer I've been looking for that nobody could give me! Thank you! This has been driving me nuts! Lol I would've loved to have had a teacher that could explain things in as much detail as you do, make it super easy to understand AND make it entertaining. Your channel is awesome

[@ScienceAsylum]

Thanks 🤓 I'm glad I could help!

[@Nyan_Kitty]

Awesome video =D Seriously, one of my favs so far!!

[@crackedemerald4930]

G r e a t v i d e o (Posted near Sagittarius A*)

[@zacknattack]

"Proper distance is called proper because it's the kind of distance we're used to." this says a lot about our society fr fr😔😔😔

[@Kevin36914]

As expected, Nick lucid always explain a deep subject with clean and easily to understand. Thanks

[@ProphetSD13]

Thanks for explaining the ULTRA basics of relativity...

[@ianvaughan9028]

Do the Local Motion with me! (Sorry couldn't resist)

[@TheNasaDude]

Now that you can do it, let's all expand now (come on baby, do the local motion)

[@ScienceAsylum]

I was thinking this during the entire production of this video.

[@algordon5843]

I think that I understood most of that. Well done Nick. Thanks.

[@mike814031]

5:00 why does it get so complicated near a rotating black hole??? By the way I love how you do your videos!

[@ScienceAsylum]

Spacetime gets stretched _and_ twisted, so it depends on the black hole’s mass and angular momentum.

[@mikegale9757]

The short answer is, the scaling factors contain ratios, which diverge to infinity at certain boundaries. The scaling factors for rotating black holes are particularly difficult because they have angular components.

[@jhlee1566]

12:09 It's a limit we just can't break, but there are some communication limits we can break .... ha ha ha that's brilliant

[@FloccinaucinihilipilificationD]

Light: Speed limit ⭕ Entanglement: Hold my photons 🚫

[@brijeshsingh8460]

But it's not communicating any information to vioate causality Its all probabilistic, in classical sense also it holds

[@PanglossDr]

The simplest illustration is a wave on the sea arriving at a beach, diagonally. The wave may be moving at 1 kph, however the crest of the wave will appear to move along the much much faster.

[@aniksamiurrahman6365]

You know Nick I was preparing to go to sleep. But you son of a gun just upped another mind-blowing video!

[@aresgalamatis7022]

@9:50 I just realised that the cosmological redshift has the same dimensions as frequency: sec**(-1)

[@drparadox2776]

2:22 I'd thought about this when I was of 14. My mind was blown actually 😂

[@macronencer]

I seem to remember that my Grandad had a hypothesis that some UFO sightings might be people playing pranks on others by shining a light onto a high cloudbase, and then suddenly turning the beam so the "craft" appeared to move away impossibly fast. That idea always intrigued me, though I don't know how easy it would be to do it in practice.

[@gnanay8555]

@@macronencer It's actually possible with spots ! I saw my first UFOs last summer, turns out i live near a zoo, and it was those three days a year when they do night openings x) Also, i live near cows, too. So maybe it WAS aliens..

[@macronencer]

@@gnanay8555 Haha, fantastic!

[@christianstadler5797]

Huge fan - honestly! So, here's my question: The galaxies seem to be moving away from us, the farther, the faster. The farther they are from us, the farther we look into the past. Does this mean in reverse: in the early phase of the universe the galaxies moved away from us faster than now?