For 6 years im spending hours of day watching youtube videos, lectures of physics, astrophysics, cosmology, quantum mechanics. And your visualization and explanation of things are incredible. Тhe thing you showed how the plasma at the hot state become transparent gas was so good. This channel has criminally low subscribers. You are as good as Pbs- space time.

@elipsem1008

3 жыл бұрын

Stay dedicated and success is imminent

@420Khatz

2 жыл бұрын

As a fellow science information junkie, I, too, appreciated his explanation of how to visualize what photon decoupling would have looked like... It's a rare find when I glean any new insigh about these topics on YT, in addition to the endlessly fascinating space imagery.

@Akordeon93

2 жыл бұрын

I love this kind of videos. PBS is often too "technical" for me to follow, but this channel... so good at visualizing. I'd argue its better at explaining than PBS

@NexusGamingRadical

2 жыл бұрын

@@Akordeon93 I was just about to make a similar comment, I fully agree with you!

@gmdascensia

2 жыл бұрын

@@Akordeon93 what is PBS?

I've watched many similar videos, but your explanations always take me a big step closer to more fully understanding. Thank you for that! It's like you remember some of the concepts that tripped you up when you were learning, and address those knowing that others will likely be experiencing the same thing.

@ButWhySci

3 жыл бұрын

Yes! This is one of driving reasons for me originally wanting to create science videos. I always try to address possible sources of confusion or misconceptions (especially ones I had) even if they don't help explain something, because knowing why those misconceptions or difficult ideas exist can further help you conceptualize that idea in your mind. Thank you for the kind words, I'm glad it's connecting with you.

I'm a student astrophysicist and I have to say that your videos are an excellent way to introduce people to the concepts in astrophysics and cosmology. It took me far long than I'd like to admit to conceptualize the idea of geodesics and curved spacetime giving the appearance as a "force". The video you made on would have made that journey MUCH easier. Just as this video explains clearly the concept of the observable universe. My friends often glaze over when I attempt to introduce them to these concepts as they are hard to explain without going into the mathematics. In the future I will be referring them to your videos. Please keep up the good work spreading knowledge and making my passion more accessible. cheers

Every time I find something unique in your videos. Often many channels have pretty similar contents on particular topic, but you always surprise me with a new approach in narration and visualization. More people should know about your channel. Throughout all your videos you convey the subtlety and sheerness of your view of the world. As always, very good job. Thank you

@ButWhySci

3 жыл бұрын

Thank you for the kind words. It means everything to me that I can help someone further conceptualize a topic.

That was amazing. You're getting better and better.

@ButWhySci

3 жыл бұрын

Thanks David

@davidmurphy563

3 жыл бұрын

@@ButWhySci What are your thoughts for your next topic or are you still weighing up your options?

@ButWhySci

3 жыл бұрын

@@davidmurphy563 I've got a couple. Redshift is the next topic and video. Usually I think of a topic I want to focus on about halfway through one. So I only have about two ideas at a time.

@davidmurphy563

3 жыл бұрын

@@ButWhySci Ah yes, red shift is the story of Hubble, galactic expansion and the big bang. Movement and waves. I explained it to my son during his last heart scan.

Just found your account. Seriously a hidden gem. I will be watching every video.

This is a super underrated KZread video for understanding this topic. It explains some of the questions others don’t that left me wondering. Good job👍

A very interesting Video The content is Researched very well and right. I will watch your Videos everytime starting from now. Good luck at your futher way on youtube :)

@savannahparrish7261

3 жыл бұрын

You won’t regret it he always breaks down these concepts so much excellent!

Just wow. Your videos are so clear and easy to understand. Love it

I find it almost insulting that you have this few views here, your videos are fantastic!

I don't know how many videos I watch about the same topic that you choose but still learning new things and understand more than before.

Love your videos !

@ButWhySci

3 жыл бұрын

I love making them! Thats just a cherry on top that others enjoy them too.

Awesome as usual :)

Underrated asf I am sad I didn’t come across this channel sooner

Wowww amazing content and explanations man, the way u explain things makes me more passionate about space, well done you 🙌🙌🙌🙌

Loving your content bro❤.

Thank you for your work, and for sharing it!🙌

I frickin' _love_ your videos! Thank you 👍

Instant sub. What a legend.

Keep it up. Your videos are amazing

This channel needs more subs

Your best video. Shame it has such a low view count

Why do we have hotter and colder part of CWB? Why can't we have CWB at uniform temperatures?

@ButWhySci

3 жыл бұрын

Believe it or not we believe it has to do with the uncertainty principle. Right before the epoch of expansion, a mere 10E-32 seconds after the beginning of the universe. All of the elementary particles in the universe were crammed into a tiny tiny homogenous glob. But as the epoch of expansion began suddenly all of the wave functions of these interacting elementary particles needed to collapse and "choose" a place to exist as space expanded. The epoch of expansion was sooooo fast and rapid that the positions the particles collapsed into translated into clusters of matter in the universe. So instead of being homogenous as one would expect, you have variations in density. An imprint of the state of the universe at the very beginning. And of course the denser regions were a bit warmer.

As an outsider, i still find it a tad bizarre to observe that our models fit our observations less and less the farther away we go from the place to which we fit those models, and not _call_ it a model-error (due to e.g. the model using a mathematical formulation that is very close, but not perfectly true to reality), but space-time expansion, ancient universe, dark energy and dark matter. At the same time, this approach does give you something to experimentally search for.

Nice. Keep going my friend

What music was used in this video? It fits the topic really well

Great video

Great content! Would be nice to see an episode about Dark Energy and/or Dark Matter

@mrandersen6872

2 жыл бұрын

Nobody knows what it is, dark energy is basically opposite gravity, pushing things apart and dark matter is invisible stuff where gravity exists but we can't observe anything causing the gravity.

This guy needs more attention!

Could some of these very small fluctuations in the CMB be just noise? After all the Milky Way galaxy produces noise which has to be removed. So could other more distant galaxies produce noise in the CMB image as well?

at 2:11, how did you get the picture, is it possible to tell me how to get the picture from the experiment? as simple as possible with few sentences. people say "background radiation of the universe" but.... can i say this way? "background radiation of the observable universe" and not universe.

Do we regularly see any minute changes in the pattern of CMB ?

god level channel

I would be curious to get your opinion on why some physicists think inflation is not real. Like Paul Steinhardt and Penrose.

If space is expanding faster with greater distance, how are galaxies able to form, and not get pulled apart?

So our ''vision'' is basicly capped at 13,9 billion lightyears forever? I guess i kind of knew that but I thought the range would increase as time went on, but distant galaxies would be moving away faster than speed of light so they would eventually outpace our range of vision, if its actually capped at 13,9 forever that changes things. Or did i missunderstand something?

I never got as much existentialist angst than when I learned about the expansion of space decreasing the observable universe. Billions of years from now, some aliens will look at the stars and be completely unable to see the background radiation. The beginning of the universe will forever be lost to them. It just feels so wrong that future scientists will be denied key insights to the universe. And then the allegory of a cave makes we wonder if we missed out on something too.

I have a question. Say you have two objects expanding away from one another. Would this not cause the objects to become closer to other objects in the direction of expansion? is there a "direction"? If not, how do we measure the expansion of space? How can everything be expanding away from everything else without getting closer to some other objects?

@candiman4243

2 жыл бұрын

Because space itself is expanding, so you never "run out of room" and things can move away from all other things indefinitely

@austincarter7358

2 жыл бұрын

@@candiman4243 So speed of expansion is relative to distance. How is it that an object can be moving away faster from another object at a distance, but at a different rate to to a closer object? I don't understand how the forces behind the change in the relative speed work. Absolutely fucking confusing.

@candiman4243

2 жыл бұрын

@@austincarter7358 There are no 'forces' involved per se, but the best analogy for this movement is the way different parts of the surface of a balloon move away from each other when the balloon is blown up. Try drawing a bunch of dots on a balloon and then inflating it

damn how is this only have 5k view ?

6:33 who else thought of the movie Reefer Madness when he said "Faster and Faster"? He sounded like that guy from Reefer Madness when he was telling the piano player to play faster

5:30 I find the graphic misleading. One could think that it's about the value on the y-axis and not the wavelength (the distance between to peaks) because both curves have the same shape.

Could someone make a 3D animation of our point in space relative to the the big bang and the plasma/CMB?

You know what really annoys the hell out of me… The videos this guy (and a few others like him) puts out are well thought out, have a high production value for what they are and teach you something and he only has just above 9000 subscribers... while somd Pop tart complains into a camera phone and in the same amount of time which is a year picks up hundreds of thousands of subscribers... this is why humanity is ultimately doomed...

The thing that always breaks my brain is trying to put together that the universe was smaller in the past, but it might also be infinite? I get past this by thinking that the universe was DENSER in the past, and has expanded since then. Then, at least, I don't have to figure out how it could have started as a point and "grown" to the current size. I'm not putting this in to words correctly. I'll try and do a brain dump. Universe is nanoseconds old. Universe has expanded 20 million light years or so. So how can light be 13.8 billion miles away that is just reaching us? Wait, I'm feeling some kind of realization. At the moment of recombination, the universe was much, much larger than 13.8 billion light years in radius. Our view of the CMB is constantly moving outwards as the light reaches us. Just like you said in the video. It just took me a while to really get it. Thank you, But Why?, I think I just had one of those eureka moments. EDIT: I keep forgetting to take in to account that the universe is expanding AS the light is moving towards us, meaning that the point that the light was emitted doesn't have to be 13.8 billion light years away - it could be much closer, but the space in between has been expanding in the interim... I think I just understood something big.

so it's kind of like an infinite water area that is at exactly 0° and you create a point in the middle that starts the conversation from water to ice and then expands out, except the water is the actual universe and the ice is our observable universe growing out wards from that point and we are a bug that is trapped inside (but moving) looking outwardly but only to the edge of the ice and no further (for some reason, its just an analogy).

I thought you were going to discuss the peaks in the power spectrum...

It disagree that the speed of light is slow. It's only slow relative to human lifetimes, which are really short.

4:12 This is fr my version of heaven when i die. I want to learn and know everything about everything

“Stupidly slow speed of light” I loved that comment because I have often thought it was odd. I mean we don’t want light to be infinitely fast, everything would happen at once, but nonetheless for a universe so large the speed limit of information is oddly slow.

If gravity and dark energy are both tied to entanglement, would there be predictable similarities between cosmic expansion and gravitational collapse events? This is probably not a productive line of thought but it occurred to me as a possibility.

There are two kinds of people, people are unable to comprehend the universe and those who have never even tried

Hydrogen, not Helium (but with a small percentage of Helium). It goes downhill from there.

The 'big bang' is only an idea, the time line to the 'BB' actually may continue as a uniform change way beyond that time in our past. The rapid 'inflation' is only some ones thoughts on an absolute beginning then.

Expanding into what?

@7:00 *Hubble's ... yes...I'm THAT jerk!

@johnfitzgerald2339

2 жыл бұрын

EXCELLENT vids, BTW...SUPERLATIVE!

Does space also expand inside my body?

Correction: Based on the model, almost all the gas was *hydrogen*, not helium.

The dotted pattern seem to show interference pattern of earth magnetic field lines as it superimpose the sound field raising up from the earth atmosphere and excited ionic air and immit light in an ever expanding motion but a closer observation it expand then collapse and so it is not wise

I don’t think you explained it so that I could understand it. If space is expanding then why is andromeda not moving away from us, instead it seems to be moving toward is. How fast is andromeda moving away?

@SWDennis

2 жыл бұрын

The gravity between Andromeda and our Milky Way is stronger than the expansion in this relatively short distance. That's why the two galaxies will merge in the future.

CMB.. is it REALLY what you say? I say this: photons escaping from a star or galaxy lose energy and show this by a red shift if their wavelength. As that same photon moves away from its source it travels near and through other gravity wells, increasing the red shift. That same photon as it travels at "c" impinges or presses against the aether, your space-time, my strings or loops, and the aether presses back with gravity, further shifting the wavelength. Eventually that photon reaches us and is shifted red into the microwave range. Holes in that CMR map show areas of the aether that have less or fewer gravity wells and the red shift is not noticeable.

@Bright Insight

Looking further and further into the Universe is looking at "a" past, relating the Speed of Light to around optical wave lengths relative to zero-infinity Kelvin flat-space ground-state envelope. This is how the Holographic Principle operates in Quantum-fields Mechanism of superimposed positioning probability condensation, "riding" the QM-TIME wave in Reciproction-recirculation at universal e-Pi-i Singularity. Obviously.

This 2053-2057 Smash Hit: The Final It’s Show Yourself The Cosmic Microwave Background and the Observable Universe

4:08 why the heck is this girl naked

Its good to talk about theories rather than facts. Everything stated in this video is part of a theory that might be wrong.

The most impressive about this image, is that the universe is only 375,000 years old at that point, so the sphere is 375,000 LY in diameter, around 3 times the current size of the Milky way. In other words, we are not looking outwards at something at very large scale, but looking inwards in a microscope at a tiny drop of a universe!

@stewiesaidthat

Жыл бұрын

Wrong. Light didn't form in the universe until 375000 years after the BB. The CMB shows that the universe was at least the size of the visible universe if not greater by the time stars were forming and sending out light.

There was not only helium in the beginning. But I suppose everybody who watches this, knows this allready.

There currently could be a earth like planet with intelligent life 25 billion light years from us. They would detect the CMB in all directions 13.7 billion years in the past also.

Ur channel is so underrated 😑

“light is very slow”

If you teleport 65 million light years away you could use a very good telescope and look at dinosaurs on earth.

@mcmlii.v

2 жыл бұрын

Crazy when you think about it. That everything that's accuring right now and in the past will be recorded through light. If you could teleport 50 light years away and view the Earth in 1971 from a powerful telescope.

Actually the stars and most of the cosmic observable are super imposition of emmission on earth and those superimpositions happened with permanent monks and other dangerous cop that nghiěp

Featured in top 10 videos of the day on walnut.tv/curious

The first thimg you have to explain is, how can light from the big bang reach us today, if the universe is infinite and light travels outward. As long as this question is open, every further interpretations are meaningless.

Dont worry God will release the Explorer DLC soon. Then we will get access to more of the Universe

My street is 200m long and if it represented the distance of the sun to earth then it should take 8 minutes to walk if you walked at the speed of 'light'. Normally it takes 2 minutes for me. I would have great difficulty walking so slowly as the 'light'. And so a sense of how slow light is compared to distances, particularly stellar distances.

I love to wonder at how much of this info will be laughably false in a hundred years (no offense, I know it's the best we have today, but progress is in the nature of science)

My intuition tells me that in maximum 30 years there will be laughing at theories like this one...it is such as we laugh at those sciences that said 100 years ago that is impossible to use nuclear force as a weapon, and only 25 years later first nuclear bomb was tested with unexpected success!!!! :P :))))))

What

The universe must be infinite in size or it wouldn’t have expanded. You cant grow into nothing. The universe must be infinite in size.

@plantenthusiast3052

2 жыл бұрын

What if it wasn't expanding but filling? What if there are multiple universes, and the force between universes impedes further growth? Things get pretty big from here, and my brain is too weak to think further.

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@FabianG-kx3fp

3 жыл бұрын

?

@algorithms_mit

3 жыл бұрын

@@FabianG-kx3fp its A,M,A,Z,I,N,G V,I,D,E,O B,R,O,T,H,E,R,

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You’re gonna explode

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Andromeda is moving TOWARDS us, and we are moving towards it. Our galaxies in the local group are all going to merge one day. Get your facts right 👍

@ricojes

2 жыл бұрын

Yes, but that doesn't change what he said. The galaxies will merge because the inward speed exceeds that of the expansion.

Christians be like: fake

🤬👉👎

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