This is the New Largest Radio Galaxy (Alcyoneus) [4K]

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What is the largest galaxy? For a long time, the largest has been IC 1101, around 4 million light years in diameter. But in recent weeks, there has been talk of a new, even larger galaxy, Alcyoneus, which is said to be more than 16 million light years in diameter! But is that what's really being proposed in the original paper detailing the discovery? Not exactly, because Alcyoneus is a Radio Galaxy. But what is a radio galaxy, and if Alcyoneus is not the largest galaxy, then how large really is it?
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(NON-ENGLISH VIEWERS)
To get subtitles in another language, click the [CC] button in the bottom right corner of the screen, then click the Settings (cogwheel) icon next to it, click "Subtitles / CC" and click "Auto-Translate", and select your language from there.
SOUNDTRACK:
All tracks by CO.AG Music: / @co.agmusic
- Sound of the Sun: • The Sounds of Space - ...
- A World of Different Dimensions: • A World of Different D...
- Your Outer World: • Slow Ambient Music -...
- Travel Beyond Your Imagination: • Ambient Space Music - ...
- Create the Future: • Ambient Deep Space Mus...
FOOTAGE:
The space scenes in this video were captured using SpaceEngine Pro, a virtual universe simulator:
spaceengine.org/
Get SpaceEngine on Steam: store.steampowered.com/app/31...
Stock Footage Sources:
- Videezy.com
- Pexels.com
- Videvo.net ( www.videvo.net/video/moving-r... )
SOURCES OF INFORMATION:
- Original Paper on Alcyoneus by Martijn Oei et al.: arxiv.org/abs/2202.05427
- Article Detailing the Discovery: phys.org/news/2022-02-giant-r...
- Synchrotron Radiation: www.nist.gov/pml/sensor-scien...
- Radio Galaxies: www.britannica.com/science/Se...
- Giant Radio Galaxies: astronomycommunity.nature.com...
Business Enquiries: SEA.Enquiries@gmail.com
(I don't do paid promotions, sorry)
CHAPTERS:
0:00 What is the Largest Galaxy?
2:02 Galaxies
4:13 IC 1101
6:32 Radio Galaxies
12:31 Giant Radio Galaxies
14:40 Alcyoneus, Largest Radio Galaxy
18:39 Alcyoneus' Host Galaxy
22:57 The Largest Galaxy- Some Considerations
28:51 Closing Statements

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31 май 2024

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Комментарии : 753

@rarebird_82 2 года назад

OMG OMG OMG a new SEA VIDEO!! 😍🤩🥰

@UltraInstinct509 2 года назад

full metal alchemist?

@boob183 2 года назад

Your almost as enthusiastic as every white person on a league of legends ad

@Pathogenai 2 года назад

Have you seen channel However?

@edwardgardner8053 2 года назад

Defo

@thetrimreaper1019 2 года назад

Wow, ur gorgeous! 😲

@Gigantor69 2 года назад

PLEASE DO NOT STOP MAKING CONTENT… So interesting and thought provoking

@Aria432 Год назад

Ty! We try our best

@OhioBallMapping 2 месяца назад

I thought you said “PLEASE DO STOP MAKING CONTENT”

@lavabread1702 2 года назад

i love this channel, because he actually knows what he is talking about and doesn't make videos for 3 year olds for the wow factor. he doesn't click bait and ive been watching him since his gaming days🙂. very nice to see how far he has come and i like seeing this channel grow.

@rajveerkanojiya2985 2 года назад

It's his gaming channel what

@skytrizz 2 года назад

@@rajveerkanojiya2985 yes

@melvindarden512 Год назад

Well said!

@rubenarroyo5147 2 года назад

You are my favorite channel, hands down. Please never stop.

@sea_space 2 года назад

You betcha! 🙂

@a.findingtheirway 2 года назад

@@sea_space thank you. I look forward to every video you post ☺️

@vOcHaZOv Год назад

I've recently realised that watching and listening to videos about space, physics, dimensions and everything in between, are very reliable ways to get me to go to sleep. I've always had problems with sleep, as it's probably something to do with my mind being very active until the early hours of the morning (up until around 12am - 3am). These videos are so fascinating, because it's all speculation and theories about things that are so mind blowingly grand and complex for the human brain to comprehend. I end up getting completely lost in thought and start dreaming, which then eventually I fall asleep.

@garethwillis Год назад

If you drink tea or especially coffee, refrain from drinking after 3pm and you should find that your sleep improves drastically. If you don't consume caffeine........ Keep watching space videos

@vOcHaZOv Год назад

@@garethwillis Saying that, it's 100% caffeine!

@snortypig596 Год назад

Please try also the French whisperer’s channel. He does exceptional space ASMR designed for that.

@ds_the_rn Год назад

@@snortypig596 - I just tried his channel and couldn’t do more than 5 seconds. I have misophonia and low volume sounds - like the soundtrack of Great Moments With Mr. Lincoln attraction at Disneyland - immediately causes me rage. Now I’ve just given any potential kidnappers and easy way to torture me 😂

@orfeas2335 Год назад

I have the same issue . Sleepy all day and at midnight i am hyperactive till the morning. Those videos are helping me indeed

@gathrailreese8018 2 года назад

I really appreciate you taking the time to say "if, but, perhaps" and willing to speculate on other possibilities rather than just stating the current narrative.

@Scott-fj9uf 2 года назад

Top comment 🌟

@chosentonessournotes 2 года назад

You definitely have the best astronomy videos on RU-vid. Hands down.

@Pathogenai 2 года назад

Do you seen channel However?

@michalstawicki1451 2 года назад

SFIA is pretty darn close

@chosentonessournotes 2 года назад

@@Pathogenai Nope. Might have to look it up.

@chosentonessournotes 2 года назад

@@michalstawicki1451 Will have to look into it! Also love Chuck’s Astrophotography!

@sandybarnes887 2 года назад

Dr Becky and Anton Petrov are also pretty good

@russellszabadosaka5-pindin849 2 года назад

This is my favorite astrophysics RU-vid channel, hands down. I don’t use this channel to fall asleep because it’s so well done. Thank you for all you do!

@ZakisHereNow 2 года назад

Thank you again for another amazingly put together video. Still have no idea how you don’t have millions of subs yet.

@sea_space 2 года назад

500K on the horizon soon though!

@ZakisHereNow 2 года назад

@@sea_space you absolutely deserve it dude!

@blakeb9964 2 года назад

@@sea_space yeah it takes some time but you'll have millions eventually. These videos are awesome.

@tomfieselmann5906 2 года назад

Too much background info, that's why... I've waited for almost 15 min before finally getting to the central topic. I have to faforward and search.

@ZakisHereNow 2 года назад

@@tomfieselmann5906 You can, not watch?

@ernestweaver9720 2 года назад

I just cannot believe how small we really are.

@joejjj4378 2 года назад

are you under 6 foot?

@jpadicecoffee9812 2 года назад

More like, from another video, I can't believe how small we "all" came from.

@dmerschen 2 года назад

In perfect SEA fashion, I fell asleep twice in the first five minutes and was only finally able to watch the video in its entirety when I woke up in the morning. The part on synchrotron radiation was particularly interesting. I think a video that explored all ways to produce and observe light, both natural and unnatural, would be interesting.

@robr135 2 года назад

You know what the problem with your comment is, and I know you meant it as a complement, but somebody curious about the video may read your first few words and get the wrong idea as you said you fell asleep twice. The danger with that wording is that to many, saying you fell asleep to something is like saying you were bored with it. Sea himself has brought this up on occasion.

@seeker296 2 года назад

@@robr135 I mean isn't that something he should fix, or accept, if he's aware of it? I've never seen a video but from the title and content it seems like this is a pretty academic channel However, it might not be a good fit for RU-vid, or video format. If it puts people to sleep, that might be a positive feature that people seek out that makes it suitable. But YT and video in general are for rapid dissemination of information outside of such niche applications. Basically, no reason to complain. people watch for their own reasons. If the creator wants that to change, they will change the content I'm watching on 2x speed and it's very slow paced so far

@hayorge27 2 года назад

@@seeker296 Master of the Internet comment. Wonder how many of us do that(2x)?

@Just_a_Tool 2 года назад

@@seeker296 His videos being laid back with his lecture is the whole point. Speeding through it because you're impatient is just ruining the experience to me. Yes, if you're watching late at night, you will likely fall asleep. And that is okay because you'll likely rewatch later. If you don't like slower paced videos because you're used to instant gratification and instant funny from fast paced Tik Tok videos, that's fine. But not everyone prefers that though.

@1zxtv 2 года назад

This is the most pretentiously pointless gatekeeping thread of comments I have ever seen. As a viewer, one of the millions that watch SEA or any content creators videos, it is in no way shape or form a duty or obligation of that viewer to persuade or dissuade another individual to watch or not for any reason. There’s 10 hour loops of Bee Movie clips, 5 second shorts of meme degeneracy, 2 hour long interviews, 10 minute tutorials. RU-vid is quite literally whatever YOU need it to be. Go outside and touch some grass you cornballs.

@seatbater6211 2 года назад

im struggling these days, so thanks for giving me those rare moments of excitement when you upload! :)

@corbintrainer-routte7427 2 года назад

glad you find excitement in this! i hope things get better for you!

@omega311888 2 года назад

dont lose hope! always look for the positive things in your life!

@joedirte716 2 года назад

Joe biden is what's wrong with the universe

@NK-er3ci 2 года назад

Just wanted to say thank you for posting these videos, I have found your sleep playlist amazing. I'd wake up in the middle of the night, learn a bit about Venus then fall back to sleep :)

@jmoney8013 2 года назад

These videos are one of the things i look forward to the most, even if it’s only once a month. Amazing work man i love it ❤️

@Pugetwitch Год назад

@@connorlancaster7541 read the room, dude.

@connorlancaster7541 Год назад

@@Pugetwitch My goal is to spread the wisdom of God that’s why that comment is there. Are you an atheist?

@2dheethbar Год назад

@@connorlancaster7541 You people are nicer when God isn't the topic of every conversation. /:

@connorlancaster7541 Год назад

@@2dheethbar I think someone can be nice while talking to someone about God if they are humble.

@2dheethbar Год назад

@@connorlancaster7541 But do you talk about God for attention and reactions? Or are your intentions justified? Because comments on the net are generally made with the sole purpose of getting responses, even simple harmless things such as compliments or advice. Otherwise, most comments wouldn't be made. That's not what spreading the word of God is about.

@BriarLeaf00 2 года назад

What would the rest of the universe look like if you were, say, halfway towards the galactic center of Alcyoneus looking out? Would the gravitational pull of so many massive bodies packed in so (relatively) close together completely distort the view of the cosmos (ie. gravitational lensing)?

@russellszabadosaka5-pindin849 2 года назад

That’s a great question, one I’ve never thought about. I hope someone with real knowledge replies so we can both find out.

@jengleheimerschmitt7941 2 года назад

Interesting question, but even here in the milky way, we can't see through our galactic disk. So you don't have to go to Alcenonious to answer that question. T The part of the observable universe that is in-line with the milky way is known as "the zone of avoidance".

@trivikram4962 2 года назад

theres a vid veritasium made on this, u can check that out

@BriarLeaf00 2 года назад

@@trivikram4962 do you recall the title?

@trivikram4962 2 года назад

@@BriarLeaf00 i think its called how one supernova measured the universe,

@troliskimosko 2 года назад

As a former gd fan of yours who is mainly passionate for space,,Your channel has to be one of my favorite creative transformations ever. These videos are truly some of the best mini documentaries of space phenomenon on the internet. Thank you, SEA1997!

@skytrizz 2 года назад

We shall forever know him as SEA1997

@Turk886 2 года назад

Yes

@bigmac5762 2 года назад

A few days late, but I love your vids so much. I applaud you on making videos on space topics that aren’t as well known. Everyone knows about stars and black holes, but not everyone knows about stuff like this! Bravo!

@homohawk 2 года назад

I have devoured your content! Love the effort you put in and your delivery. Being soothed while learning. Wonderful!

@infantry630 2 года назад

Nothing, NOTHING beats seeing a new SEA video posted!!!!

@scobra5941 Год назад

It would if he posted 2.

@moelr_ 2 года назад

Trying to comprehend the scale of these galaxy beasts truly hurts my brain every single time. Once again a fantastically narrated video. I always get lost in your visuals. Btw it sucks that I can't edit Super Thanks messages on mobile.

@silverwolfix 2 года назад

Great video man! It really deserves more views. Keep up the good work!

@wc4201 2 года назад

Is there a whole team of people producing these videos for SEA or is it just one guy? The quality in these videos is top notch.

@sea_space 2 года назад

Just me and a 40 pack of beers 😊

@wc4201 2 года назад

@@sea_space something tells me we’d get along. Keep up the great work ;)

@MrGedgeman 2 года назад

Please make more videos - these are amazing. I especially love it when you have to read out amazingly long designations - always cracks me up.

@bencelanyi4559 2 года назад

Another banger! Thank you for putting out such quality content so often, I hope your channel really blows up soon

@olli-pekkapauna8079 2 года назад

Nobody does it like you, man. Fantastic once again.

@aethrya 2 года назад

Dude your channel is killin it. Thanks for putting out such amazing and free content.

@astra9063 2 года назад

i genuinely hope you would post more your videos you are by far the most interesting on this platform!

@rotampel 2 года назад

Absolutely love your videos, thank you so much for every single one!

@jameswingert9596 2 года назад

Wow. Fantastic work! Love this one!🙌🏾🙂🙏🏽

@spaCeghOssst 2 года назад

please never stop making videos man, these are the only things keepin my mind active lol

@upscaleavenue Год назад

Your channel is one of a kind. Your presentations are mesmerizing. Thank you!

@_Space_Through 2 года назад

Been watching you since your gd days and this is one of your best videos yet. Love the channel man.

@tottalynotc 2 года назад

cant help but love how much you've grown since making videos about news in some relatively obscure 2d platformer

@sea_space 2 года назад

G-News was the mother of all springboards!

@skytrizz 2 года назад

@@sea_space sea u have no idea how much I miss ur g-news videos

@elpatator 2 года назад

In these troubled times, I cannot thank you enough for making these videos available for free and so easily to everyday people like me. The thought of this mind-boggingly vast Universe, brimming with unthinkably complex objects that our human brains can’t even comprehend, far out of reach and forever unfazed by humanity’s madness, brings me a deep sense of peace and perspective that I desperately need to put up with the dreadful experience that is life on this lonely, angry, tiny little rock. From the bottom of my heart, thank you for doing what you do. It is impactful.

@obsti 2 года назад

Theres nothing to add to your comment^^ Well said.

@Manwendlil 2 года назад

@@obsti we are but vermin in the cold, uncaring eyes of the universe...

@Semirotta 2 года назад

Problem with the human beings is exactly the fact that they don't seem to realize how miniscule we are on this planet in this vast massive Universe. I really hope that people would be able to open their eyes and minds for these facts and our lives would become a lot better.

@stevewilson1841 2 года назад

You've just made my day by realising this video bro. Keep um coming Mr Sea 🤘🏽👍🏿

@BlackberryTheMCPro 2 года назад

Fuck yes thanks for amazing videos that both intrigue me when I don't want to sleep, and help me relax when I do. Amazing!

@BrianFedirko 2 года назад

I love the quality and amount of educated thought that you put into these videos. Fantastic job. It makes me feel smaller and bigger at the same time, the physical and mental. You Rock.

@melvindarden512 Год назад

Ditto...I couldn't have said that any better!

@kohby784 2 года назад

I always enjoy your videos and the beautiful music you play in tht background. So peaceful and enchanting

@hotpursuit58 2 года назад

I dont know about anyone else but I get so damn excited when I see you post a new video!!

@mattsoreng3066 Год назад

Got yourself a new subscriber. Great video absolutely fascinating.

@TG-Maverick22 2 года назад

SEA videos sets the standard of what quality videos are. This channel is truly a gift to us, the viewers.

@Nefertiti0403 2 года назад

You Truly are my favorite out of all my subscribers! I don’t just say that either. To me from your voice to how you narrate….Is Perfect 💜

@Pepperedtea 3 месяца назад

I play one of your videos every night to fall asleep, I absolutely love your channel and videos. I’d absolutely love to see more galaxy videos! I know you’ve done a couple but I’d still love more

@willowwisp1000 2 года назад

Hi sea, i hope you read this but someday could you do a vid about Intergalactic travel and the possible methods of travel eg hypervelocity stars? Thank you

@mementovivere9852 2 года назад

i set aside time to completely focus on your videos, i adore this channel

@adzz8012 2 года назад

Ive missed your well rounded analysis. I wish you would post more often mate.

@RaineHoltz 2 года назад

Another mind-blowing video. Thank you so much! ❤

@jy4n561 2 года назад

Thank you so much. My sleep playlist has increased. I love ur content

@melvindarden512 Год назад

I love these videos! I'm excited to watch cuz I haven't seen this one...but some of these galaxys I never even heard of! And I watch a hell of a lot of space videos!

@Sapper12B 2 года назад

SEA and Cool Worlds are the BEST YT channels, period. Thank you 🙏

@prallla 2 года назад

Thankyou soo so so much for the videos you create, you made my day! such a phenomenal videooo!!!!!!!!

@ivarsaldermanis9477 2 года назад

Every time I see a notification of a new video, I hope that it'll be SEA! Finally my hopes came true!!!!

@TheExoplanetsChannel 2 года назад

Great video! It's mind-blowing that the Milky Way and Andromeda merger has already begun.

@afstutz 2 года назад

Great video as always!!

@werbnnerf Год назад

Dude this is my new favourite channel. This is amazing.

@carlamerritt490 2 года назад

Love the channel and every single video! Yes, I've watched all. Some multiple times. Who's the Narrator, the "Voice"? They are wonderful and I'd like to know more.

@Dryceman 2 года назад

Absolutely love your content!

@aaronreid8375 2 года назад

Recently discovered your channel. Between this channel & PBS Spacetime I get my astrophyics fix!

@michaeldevito7099 2 года назад

Thank you for another great job always top notch 👍

@FloozieOne Год назад

I am always stunned by the pictures you use. It must take you forever to find them by scouring all the exploratory sites that make them available such as NASA, The European Space Agency (not the exact name by I can't remember it) and all the study groups attached to universities. Thank you for the beauty and awe they inspire.

@Fylnnn 2 года назад

This video I've been waiting for, thanks bro, this is the best day for me

@cwshellhamer342 2 года назад

My day has gotten 10384839392% better seeing a new SEA video upload!!

@BrothersKeeper44 2 года назад

I know this isn't your main job, SEA. I hope it becomes your main job though. Every video is top notch. You have a talent and I hope you put out videos are a more frequent basis.

@sea_space 2 года назад

Thank you! And this is my main job as it happens, you’d be surprised how long this stuff takes me even with a clear schedule 😅

@BrothersKeeper44 2 года назад

@@sea_space I believe it sir. I didn't know it was a one-man-army. Even more impressive!

@Peter_McNutt 2 года назад

Knowing this and the quality of these videos you sir deserve twice as many subs, too bad people are more interested in who slapped who at the Oscar’s than the mysteries of the universe.

@matthewthomson6466 2 года назад

Get your wine and hop on the couch, lads, new Sea video just dropped 💕

@I_Fwip 2 года назад

The best part about sea is that I learn from him. I passed my astronomy/space unit from his videos. 😂

@thatguywesmaranan 2 года назад

SEA... back again with another banger of a video... 👏🏾👏🏾👏🏾

@alldayreggae 2 года назад

Another amazing video, thank you!

@d4v0r_x 2 года назад

perhaps this is one the best youtube channels about the cosmos

@airbeoneairbeone2872 Год назад

and your quiet and understandable UK quiet and relaxing voice droves us beyond and far in the universe. Thanks

@TwoBs 2 года назад

You have become my favorite channel. Almost all of my YT downloads section is your videos lol.

2 года назад

Hi SEA. Thanks for this. U are a live saver

@bryanstellfox8521 Год назад

I'm continuously amazed by your videos sir. I never say stuff like this, but your content is unbelievable. Every single video is so well planned, executed, edited, and narrated. Somehow, you're able to make my mind bend enough to fathom, perhaps even comprehend, the massive scale and mystery of the stellar heavens. Absolutely superb.

@awediomusic2137 2 года назад

Ah, once a month or so the sight of a new SEA upload quells my anxieties and warms my heart.

@vertxi9934 Год назад

Your channel is a gold mine, so happy I found it.

@yupnope3171 2 года назад

Love your work man

@graemelennie 2 года назад

Huge notification to get on a hungover Sunday afternoon. Thanks Sea!

@shogun8376 2 года назад

WoooHooo! It's like my birthday and Christmas wrapped together whenever a new SEA video premieres! Thank you so much for the amazing work you do, so that us mere mortals can take a glimpse of the vast unfathomable knowledge that are contained in our home planet and beyond to the farthest reaches of the universe. Simply saying thank you isn't adequate for the enormous work you guys do. Love from Bangladesh. 💝💝💝💝💝

@SuperPITSteelers 2 года назад

I don't know why, but this comment makes me smile. I guess it's nice to see people being nice

@shogun8376 2 года назад

@@SuperPITSteelers thanks. Being nice doesn't hurt anyone, and also makes yourself feel better because of it. Whereas, not being nice...

@FoxTashikata 2 года назад

I really appreciate the analogy you make of galaxies being cities.

@scobra5941 Год назад

Many astronomers have made the same analogy, nothing new there. You (and the rest of us) currently reside in a "quiet suburb" of our galactic city or so I'm constantly told.

@pratikdabhade4031 Год назад

When I first started working on giant radio galaxies a few yrs back, I never imagined them to be popular enough to be viewed 😅so much on youtube. Great efforts by SEA.

@matiaskekki2998 2 года назад

Love your videos! ☺️

@aidancahill9924 2 года назад

16:10 what do you mean Sea, that's a perfectly good and totally unforgettable name 🙄 Amazing videos as always!

@TON-vz3pe Год назад

The thing that amazes me the most is not how big it is, but how far. It's 3 billion light years away or 1 GPc. That's 3.3% of the observable universe!!

@alexstephens839 2 года назад

Can't wait to watch this. You and Cool worlds are my favourite channels on RU-vid. Thankyou for creating such amazing content Sea, it has gotten me through many hard times.

@jimc.goodfellas226 2 года назад

I thought maybe they were the same guy for awhile until I figured out better

@danemania001 2 года назад

I really really love your content sea

@SunsetSounds23 2 года назад

Perfect timing! A new video for me to fall asleep to :)

@emeraldcitycs6662 2 года назад

nothing better than a new SEA video

@DrawingsAndScience 2 года назад

Thanks for making this video

@RPERIARTWORKS 2 года назад

These videos are better than most space documentaries that ive seen, Including the new version of COSMOS... (no one can replace Carl Sagan)

@hamsandwich7353 2 года назад

Today is a good day. A much needed win over Norwich and a SEA video drop too.

@rmorrin240 2 года назад

once again another amazing video

@davidmedlin8562 2 года назад

You should be on nebula and curiosity stream, these videos are always A+

@2007jag 2 года назад

LETS GO another SEA video :D making these must be its own art or something

@Scott-fj9uf 2 года назад

There are no other videos I get more excited for and look forward to. Ty for all your love to science and the cosmos.

@szpaqus 2 года назад

this was fire. loved it!

@jdiluigi 2 года назад

Even science themed media has attention grabbing headlines that can be misleading if you don't read the article. Love your channel my friend. Great video as always.