I love how he clarified what "My People" meant.

@NeergMit

3 ай бұрын

Yeah? I felt kinda weird about it, like it was sad he might have had to.

@tropickman

3 ай бұрын

Way to overcomplicate it Neil

@chhapriyt5686

Ай бұрын

Hii guys I'm from andromeda Galaxy🌌🌌

@chhapriyt5686

Ай бұрын

Hii guys I'm from andromeda Galaxy🌌🌌

@norismercado-qo2li

Ай бұрын

Thanks Dr. Neil Tyson, it's a pleasure to listen to your lectures

That shirt is dope Neil!

@chevyDboyMike

3 ай бұрын

Not really

@DaveJohnson-qo9yf

3 ай бұрын

😅😅😅😅😅😅😅😅😅😅😅😅😅😅😅😅

@SheSweetLikSugarNSavage

3 ай бұрын

Ikr.... he's talking and I'm thinking 🤔...yea but I need that shirt bruh.😂

@balkhss

3 ай бұрын

yeh it is@@chevyDboyMike

@madixjensen7070

3 ай бұрын

i had a blanket with that pattern

Thank you professor Neill you explain things so well,much appreciated 😊

@cush6827

3 ай бұрын

How is he a professor? At which university does he teach?

@zanecct

3 ай бұрын

@@cush6827many people call him professor because he teaches us stuff

LMFAO. That's the best explanation for Red shifting ever! I understood it immediately when he said, the expansion is diluting the energy. That's why NDT is awesome.

@sangreesraro3996

2 ай бұрын

But does it appear diluted because the device we use to observe it can't get accurate data and it appears diluted?

I've learned so much from you Professor! You describe the universe in ways that all can understand.

Thx you Neil for making it so easy to understand.

@Kube_Dog

3 ай бұрын

not a professor

@steffenc77

3 ай бұрын

@@Kube_Dog Dr. then?

@Kube_Dog

3 ай бұрын

@@steffenc77 He eventually got a PhD if that's what you mean. He failed it a few times first, then barely passed. He never taught and never practiced science. He's basically like a failed artist who became the curator of a museum instead, where he explains what the art means. He's a high school version of Bill Nye with an ego the mass of the sun.

@Kube_Dog

3 ай бұрын

He eventually got a PhD if that's what you mean. He failed it a few times first, then barely passed. He never taught and never practiced science. He's basically like a failed artist who became the curator of a museum instead, where he explains what the art means. He's a high school version of Bill Nye with an ego the mass of the sun.

Keep the knowledge coming, Sir. ❤ it!! Fascinating!!

Thanks, Dr. Tyson. If only everyone could mean "My people" in the same sense you do.

Always thought that the edge of the observable universe is fixed at 14B light years away from all directions (as in there was no light before the BigBang to reach us) Now this explanation made it much clearer! Thank you professor!

@pythondrink

3 ай бұрын

The age of the universe has nothing to do with the size of the universe. Also, you don't take into account that the universe is expanding. Btw, the diameter of the observable universe is 93B light years.

@taters-no4gj

3 ай бұрын

If the Andromeda galaxy is approximately 2.5 million light-years away, how can the diameter of the observable universe be just 983 lightyears? And, no, I'm not a physicist. Just someone who's fascinated by how extraordinary and rather terrifying the universe really is 😳🤯💩

@thefirstboiii5843

3 ай бұрын

​@@taters-no4gjthey said 93B (as in 93 billion) light-years, not just 983

@taters-no4gj

3 ай бұрын

@thefirstboiii5843 Ahhh! That makes a little more sense. The font on my phone makes the no.8, and the letter B, virtually indistinguishable from each other. Something I've only just become aware of. Thank you for the clarification. 😉👍🏼. But he still could've said billion 🙄🤦🏻‍♂️

Any Star talk merch available? I love the shirt!

Tnx Neil you are a cultural game changer and phenom

Very well explained!

Wow, that was much better explanation of observable universe that I heard!

Fun fact - you are the center of the observable universe.

@andikardian9014

2 ай бұрын

And we don't know if there are other inhabited plants as the center of their observable universe and our observable universe is out of range from their observable universe.

Please don't age! Stay with us, with our kids and on and on!

Always love your videos, I've been a life long Astronomy fan and you make it more so.

Where can I get a shirt with that print? All astrophysicists and astronomers should wear a shirt like that. I bet Carl Sagan would wear that shirt when he was doing cosmos.

Can we please know where you shop for space shirts? Please and thank you.

I take pictures from my backyard and I’ve noticed that with my equipment about the farthest I can realistically see is 100 million light years which is barely anything but I’m happy

@user-dh6bj2me5p

3 ай бұрын

Good on you!

@DiceDecides

3 ай бұрын

barely anything? you do realize you're seeing 100 million years into the past? that's what the stars looked like when DINOSAURS were alive

@cato451

3 ай бұрын

@@DiceDecides oh I’m well aware of that scale. Yes land mammals barely existed. Still I’m just saying in astronomical distance it’s nothing. But like I said I’m happy and awed.

@anandrbhandage983

3 ай бұрын

What's the equipment you have and the cost please?

@cato451

3 ай бұрын

@@anandrbhandage983 Seestar S50. $499 delivered to my door.

I thought the "horizon" was just at the distance that matches the age of the universe (minus the first 370,000 years until recombination was over and the universe became transparent). Why does it matter what speed objects had back then? Can't we see deeper into the IR spectrum to compensate for those speeds? And does it make a significant difference?

@michael-solomon

3 ай бұрын

I thought the same

@BrianWelch-vc7xy

3 ай бұрын

Objects are moving away from us, pulled at an accelerating rate by the expansion of spacetime. Light from those objects is stretched out by the expansion into the red spectrum, but at some point the expansion rate exceeds C and the light is no longer visible.

@yyyyyk

3 ай бұрын

@@BrianWelch-vc7xy that is very interesting! Thank you for explaining that! I've never thought about it that way. So, now I'm trying to do the math: If the rate of the expansion of the universe is currently measured to be 73.24 ± 1.74 (km/s)/Mpc, and the speed of light is 300,000 km/s, that means that at a distance of 300,000/73 = 4,100 Mpc, which is 13.4 Billion light years, the expansion of the universe is the same as the speed of light! Seems like an odd coincidence that the math came out to almost the same distance as the size of the visible universe regardless of the expansion of the universe... Isn't that suspicious?

Love that shirt!

Wondering if people on an earth-like planet in that redshifted galaxy so very far away would see beyond the edge that they are so much closer to?

Does anyone else twitch just a little when a physicist says anything has a value of infinity?

@ignorasmus

3 ай бұрын

😂😂 I know what you mean... I used to ponder a lot about "infinite" ( & infinitesimally small) things. Slowly, I got used to the idea, though never truly grasped it. I think it is not really possible for human minds to truly understand beyond certain values.

I wonder if it's also because there might be some sort of curvature to our universe as well. And maybe the infinity redshift is like when we are trying to observe Canada from a beach in Ohio but can't because there is curvature to space like there is curvature of the Earth and most everything else in the universe. I'm no astrophysicist tho so lets just be honest I have no clue lol.

@BrianWelch-vc7xy

3 ай бұрын

Fun fact-the observable universe is flat (has no curvature) based on observational evidence from multiple sources, with a 0.4% margin of error. We don't know what the topography of the universe is beyond our observational limits, though.

Love how you make me understand about universe..Agreed with the comment about the shirt,it's dope ❤

Perfect discription

Tyson himself has expanded so much that parts of him are not observable anymore.

Great Explainer.

I love how scientists can explain what we don’t know and what we can’t see so well that it makes sense. 😊

Minding galaxies continue to go presumably far beyond that point, how unfathomable is how huge the universe is.

@user-dh6bj2me5p

3 ай бұрын

It's very fathomable. You just have to possess a big and functioning brain.

Thanks Neil. That was a really good info, that we actually, physically can't record or read beyond thst point.... yet!

@user-dh6bj2me5p

3 ай бұрын

"Neil." What dummy told you, "Niel?"

@syedarmaghanhassan4652

3 ай бұрын

@@user-dh6bj2me5p lol.. thnx for the correction, I'll make the spelling correction above! It's a German Thing. You spell the word like you pronounce it in German, not the other way around. Like Niel would be pronounced Neel. And Neil would be Naaai-el . 😜 But jay , english is english, so thanks! 😎🙏

@syedarmaghanhassan4652

3 ай бұрын

@@user-dh6bj2me5p it is amazing though, that I never noticed. Thanks a lot for opening my Aaiz! 👀

@syedarmaghanhassan4652

3 ай бұрын

@@QGZ7 yes

Listen and learn ❤

@imwelshjesus

3 ай бұрын

I refuse, cos I's got a book which says some middle-eastern bloke thousands of years ago says he's wot dun it all and it got rit down so its gotta be troo. And Trump is kind and gentle.

I could listen to you talk about astrophysics for hours on end. Love the shirt, by the way.

That's just so fracking cool!!! Gods damned, I wish I was smart enough to do what you do!!!

You are that dude 🙌🏾🙌🏾🙌🏾🙌🏾🎉

Well said! 👏🏾

That shirt looks just like my pillow case

You da Man! Thanks & keepitup.

I greatly enjoy his explanation of astrophysics clearly and understandable

Coolest shirt in the cosmos!!! Right out from space jam😂😂😂

Toby From Nigeria 🇳🇬 🙌 I actually Understood ❤

My head hurts. Again. Why do I watch him? Oh. My head is expanding. I love you man. 😊

@startalk Extremely well explained. I could actually visualize this in my mind - without referencing visual clues depicted in your video. Keep them coming 👍🏾.

Awesome shirt. You are the universe.

Interesting! And cool shirt, by the way.

Fully understand thanks for the explanation. Are we making a telescope that can see even further than the observable universe?

I love you Neil!❤

"BRILLIANT"- HERMIONE,MVP

I always enjoy listening to you. Thank you for explaining it simply for dummy like me.

Thank you for explaining that.

Thank you, Dr. Tyson, for clarifying the concept of the "edge of the universe" meant for me. I've had the idea of horizon bring the "standing in a beach model" where space would bend beyond our ability to see what may be beyond the horizon. lt was not clear what horizon if the visible universe really meant. Horizon is not the curvature of space (as standing in a beach model would entitle), but the speed in which the expansion takes place at the "edge" of what's visible in our 3D spherical universe buble. At those speeds light "dilutes" to the point of being currently undetectable, and that's the edge for our current instruments. The "dilution" of the visible light is the horizon, nothing more. And the speed of expansion makes whatever may be beyond that point invisible to us. We may live in an infinite universe afterall.

I like his shirt, nice design.

Great explanation

Coolest shirt ever!

Exquisitely articulated! Thank you Dr Tyson! Your description of light and its energy signature is easy to comprehend. 🎉🪐

That shirt is out of this world 💯

Love the shirt! I want one! 😂

Thanks Neil, i was always confused about it, so it's like that's our limit!

The Dr. looks well! Very nice! Much improved!! 10Q 10Q

This made sense to me. I've wondered what is the boundary of the universe. Well, it tracked by the known stuff, not the unknown stuff.

Love your shirt Very fun

My mind was just expanded to infinity.😊

wow! that was cool!

Happy Blessed Oyster day to you Neil n Chuck Huggies

I find what he said to be very sad. If another galaxy that has lifeforms in it is moving away from us at a very fast pace we'll never get the chance to interact or meet such lifeforms.

Love the shirt!❤

Loving that shirt 👏😎😍

So scientists do understand the concept of the observable universe! Amazing!

Thank you

Thank you Sir, for so precious information!

When Neil says “ My People “ he doesn’t mean My people ✊🏾… 😂

The only thing that I focused on was whether the gin in my cocktail had changed flavor profiles.

Neil just wishes he could come up with a decent catchphrase like "Billions and billions," Give it up Neil!

Love that t shirt ❤

One day, this person will be an example how science may went astray

Okay now I understand. Thank you

How many people in the world could be so cool to do a video in such a dope shirt AND with their own bubblehead doll in the background? 😂

Interesting, didn't know that 😊

To infinity. And beyond!

And now as we talk about how well defined the universe is we find that it is expanding at different rates in different directions breaking some of the explanations and raising questions we thought were answered and now need further investigation and analysis.

I thought it was more that there is a point where, due to inflation, the light will literally never reach Earth. Having watched this through a couple of times, I still think that's the case

I was making an observation, well maybe a thought experiment, that we cannot observe an expanding universe, using redshift. A redshift denotes motion within space, but expansion is not motion. Maybe Neil can explain this a bit more

As a kid I always thought there had to be a horizon in the universe just like here on Earth. Just didn't know about EM waves and such until later on.

I want Neil's shirt!

Awesome shirt! Where can I get one?

That is the EVENT HORIZON of the observable universe.

And the observable universe is actually only getting smaller over time. Eventually it’ll be the singular Milkdromeda galaxy and that’ll be the only thing you can see from inside it. And then even that will break apart and star systems and even eventually planets will be stranded alone until even they break apart and nothing exists anymore…

Wow 😮

And as I understand it, stuff is disappearing past the threshold of observability all the time. What I'm left to wonder is how big the "actual" universe is and how much stuff there is in it (the observable plus the unobservable).

It's big, really big yet most humans still think it is a long way to the corner store......

I want that shirt!

Seeing as how only about 5% of all light is visible, I'd say what we see is, "Not much." 🎶"We've only just begun..."🎶

What a great shirt

You are my universe

So, Space really is the final frontier.

We need an infinity sensitive device. Maybe there’s a special mineral on Pluto?

@imwelshjesus

3 ай бұрын

There is, it's called Kraptonite.

or, the universe is flat and the "redshift" is just the galaxy falling out of the plate

Wow....i actually understood it.😅

I like your shirt. I like colors.

"My people"? That hurts 😭.. now I know what Pluto must have felt like ... Almost there but not quite ..