Stephenson 2-18, with a Volume 10 bln Times that of the Sun
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- Опубликовано: 31 май 2024
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Until a short time ago it was UY Scuti that used to be considered the largest star known to mankind for a long while. Located 9,500 light years away from the Sun, the star is so staggeringly enormous that it would cover areas beyond Jupiter’s orbit were it placed in the centre of the Solar System. Its radius may reach 1,900 those of the Sun and its volume may be over 5 bln times that of the Sun. But recently it was beaten by Stephenson 2-18 which is now the largest star in the parts of the universe studied by us.
#Stephenson #Star #Kosmo
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Nice
Well, since you asked. And ONLY because you asked.
The graphic of Earth when describing the stars density makes it look like 90km reaches thousands of miles, er, kilometers into space.
PS Sorry, forgot to say thank you for the content.
WOW that's a BIG ASS star
Very good, bigbang has been being cosmos.
keep up the good work...always watch your channel...
I love watching these videos before bed, really has and continues to help with my depression.
It almost feels non existent now on the scale of things, really humbling and informative.
Hope everyone has a good night's sleep and great day tomorrow.
Your depression is just your own cinema in your head. This is how I consider depressions. By watching theses videos more and more you will see how unimportant that cinema is. Good luck to you!
@@lagitamaoa9155 I wish you well my friend.
Same and nite nite. 😴
Give David Butler's videos a try. They're highly informative, less commercialized and serene.
Yes I must say. Seems like our problems are so small compared to the facts and mysteries of the universe.
Fun fact - it would take around 1000 years for a commercial airliner to circle Stephenson 2-18 just once.
I thought it was about 500 years
A commercial airliner it takes a thousand years to circle Canis majoris.
Commercial airliners travel at an average speed of 500 miles an hour.
@@mox9076 A typical commercial airliner flies at @ 460 - 575 mph, while our fastest jets reach speeds of 2100 mph. So...yeah. If you’re flying United, it’s gonna take a while. 😆
does that count refueling
Plot twist: it has already gone supernova, it's gonna take 20,000 years for us to get the update.
we already have a Camera man there. I think he's on his coffee break.
Or already become blackhole
I was thinking the same thing the majority of these star's have already went supernova
20, 000 years. I hope we’re prepared for when that happens 😂
@@bruceleeroy8302 it isn't gonna effect us
I remember when VY Canis Majoris was the biggest
Same. It was a simpler time.
I love ur profile pic, nice game
I remember when Betelgeuse was
I agree. This star broke the mold.
I remember when Betelguese was.
Given its distance of 20,000 light years from here, it is possible it no longer exists, and has gone through a supernova or a hypernova explosion. We'll know it only in the far future, if at all. What we see of it now, existed when the human race was hunting and gathering.
If that was the case scientists would already know about that. Trust me they know more than Mr and you can come up with. What we thought of, they thought of.
@@dik56 not true. Nothing travels faster than light and scientists cannot see beyond that.
It could have happened thousands of years ago and we'll see it tomorrow.
Imagine this star compared to the giant stars that first appeared in the universe.
i was trying to find info on this. From what I can find pop 3 stars were hundreds of times bigger than our sun, so this star could be similar size to pop3, but different composition?
@@danieljohnmorris Firstly do you mean the diameter size or mass? In terms of mass those first stars would have had masses hundreds of times greater than the sun, possibly with up to 1,000 solar masses.
Secondly they would have been composed of mostly hydrogen with some helium and lithium. The other heavier elements like carbon, oxygen nitrogen and others up to iron would have been formed during the lives of these stars through the fusion process. Once these stars went supernova, elements heavier than Iron like gold, silver and uranium would have been formed. The supernova would have produced enough heat, pressure and neutrons that a quick burst of fusion and production of heavier elements could happen. Over millions of years these supernova enriched the universe with these elements, allowing planets to form.
Today stars are still composed of mostly hydrogen and helium, but they also have some of the heavier elements as well.
IMAGINE A WHITE DWARF COMPARED TO STEVENSON 2-18
@@smooblox69420 Imagine you compared to a White Dwarf.
I am imagining that right now... will get back to you.
Informative and belittling, how truly tiny we are. Awesome light show when these star masses will go super nova, only we may not exist when they do. Excellent video !
humbling is the word you are looking for.
Nothing is large in the infinite universe.
"Nothing is large. Everything is relative".
Ezio Auditore, circa 2021 or something I don't know.
I've known a few egos that could give the universe a run for its money
Humans ego is for sure
Not infinite
@@russellwestbrookyellingatw9381 who knows?
Anyone watching this video and the video maker... Is a genius...🔥 As you all are loving the Cosmos... 🔥
Thanks sir for heart ♥
I'll take it but I'm no genius wish I was, always looking up though for sure so much out there beyond our reach its dizzying, hopefully we can get to these places one day
@@blakenorman4822 yes we shall reach those relentlessness.. BTW are you interested in cosmic discovery?
That’s right, anyone who sees this video is really smart (so are you). I guess, you are a person who knows how to speak in a way that people like
Just yesterday, I was looking for a good video about this Star and I thought that Kosmo should make one. There it is 24h later lol.
Just wow, I love the way you wizualize, explain and use music, thanks for your content!
It's crazy how big this star is. Even if you could move at lightspeed it would still take you almost 9 hours to circumnavigate the star... that's just mind-boggling...
omg
This channel deserves so many more subscribers. Fantastic content.
Another informative and well-made video. Thanks!
Great explanation. Need more this type of short videos.
Your videos are becoming so well produced. The content you present is very interesting as well. Keep up the great work.
Well, vids like this really get that old noodle cranked up! I love this stuff...thanks for the incredible upload! I even felt compelled to comment on a reply about "Taco Bell farts" by Babaloo Farb, one day ago. Newest subscriber and bell ringer here! + a big 👍! Hello from Columbia, Missouri, USA.
Stephenson 2-18, the only thing in the known universe that is larger than this star is kosmos pronunciation of the letter ‘O’ - which is largest known pronounciation in the known universe.
I want to thank this video for giving Pluto some love. It's just despicable how much discrimination and disrespect that poor little planet must have to endure every day.
some good info in here. good job!
imagine at this right time.. somewhere in the universe, a supernova happens
I imagined.. 🤷🏻♂️
It’s literally happening right as we speak, there are more stars in the observable universe (95% of the universe) than their is grains of sand on every beach / dessert on earth.
Edit: at least I think
Crazy to think it's happening somewhere out there and we'll never see it in our lifetime.
Scary thing is, there are stars out there that probably make Stephen 2-18 look tiny
to scare you even more, stars density and sizes have decreased as the number of stars have increased over the years. in ancient and early times of the universe, the sizes of stars were most likely millions of times larger than even those ones
Amazing video 💯👏🏻
Great video yet again
As the thumbnail illustrates, the entire Sun is barely visible, whilst the curvature of Stephenson 2-18 is barely visible.
It's always so fascinating to watch a video of "out space education"
the nebula that birthed the stars in the stephenson cluster must of been truly immense as i hear there,s many super giant stars within it
Nice. Love your videos.
Thanks! :)
Fantastic icons ! Congratulations to the creator of the video!
Very nice video respect 👍
Your videos are the absolute BEST! You & @SEA are the utter most incredible space channels not in the "mainstream" (although you deserve their same numbers)!!
Checkout Cool worlds and Event horizon!
And medley sheep
Congratulations for 500K Subs!!!
and great, qualitative content
a very informative channel❤️
Graphics are insanely good 😱 why didn't I find this channel sooner? 👌 excellent video again
Nice. Thanks
Great video! Only, it is a big sorrow that this marvel is not observable with naked eye
awesome Kosmos!
Fun fact : If Milky Way is the size of USA... then S2-18 will be the size our ONE human fingerprint.
this star is not a supergiant but an Hypergiant at this point of size
Supernovae has to be the best plural form of any word. Smug scientist: "It's actually called supernovae."
This is the type of stuff I love.
Get this man to 100k
Xcellent info.
2:47 Uranus survived. Heh.
OMG I didn't know there was a star bigger than UY Scuti
This star claps Scuti's cheeks
@@user-nr2ku9dk9b Poetry
@@user-nr2ku9dk9b I don't know what that means. I didn't play sports 🤣
R136A1 is the known massive
@@BM-et3vb mass and size are different
Good vídeo. Nice🎶
MARVELOUS VIDEO !!! GREETINGS FROM MÉXICO 🇲🇽
Information about Stephenson 2-18
Stephenson 2-18 (abbreviated to St2-18), also known as Stephenson 2 DFK 1 or RSGC2-18, is a red supergiant (RSG) or possible extreme red hypergiant[2] (RHG) star in the constellation of Scutum. It lies near the open cluster Stephenson 2, which is located about 5.8 kiloparsecs (19,000 light-years) away from Earth in the Scutum-Centaurus Arm of the Milky Way galaxy, and is assumed to be one of a group of stars at a similar distance, although some sources consider it to be an unrelated red supergiant.[5][6] It is among the largest known stars, one of the most luminous red supergiants, and one of the most luminous stars in the Milky Way.
Stephenson 2-18 together with its supposed parent cluster Stephenson 2 (upper left), viewed by the Two-Micron All Sky Survey.
Observation data
Epoch J2000 Equinox J2000
Constellation
Scutum
Right ascension
18h 39m 02.3709s[1]
Declination
−06° 05′ 10.5357″[1]
Characteristics
Evolutionary stage
Red supergiant, possible extreme red hypergiant[2]
Spectral type
~M6[3]
Apparent magnitude (G)
15.2631±0.0092[1]
Apparent magnitude (J)
7.150[4]
Apparent magnitude (H)
4.698[4]
Apparent magnitude (K)
2.9[4]
Astrometry
Radial velocity (Rv)
89[5] km/s
Proper motion (μ)
RA: −3.045±0.511[1] mas/yr
Dec.: −5.950±0.480[1] mas/yr
Parallax (π)
−0.0081 ± 0.3120 mas[1]
Distance
18,900[6] ly
(5,800[6] pc)
Details
Radius
2,150[7][a] R☉
Luminosity
436,516[7] (90,000[8]-630,000[6][b]) L☉
Temperature
3,200[7] K
Other designations
Stephenson 2-18, Stephenson 2 DFK 1, RSGC2-18, 2MASS J18390238-0605106, IRAS 18363-0607, DENIS J183902.4-060510, MSX6C G026.1044-00.0283
Stephenson 2-18 has an estimated radius of around 2,150 solar radii (1.50×109 kilometres; 10.0 astronomical units), which would correspond to a volume nearly 10 billion times that of the Sun. Taking this estimate as correct, it would take nearly 9 hours to travel around its surface at the speed of light, compared to 14.5 seconds for the Sun.[9] If placed at the center of Earth's Solar System, its photosphere would engulf the orbit of Saturn.
Makes one really think about what else is hidden and waiting to be discovered
Teacher: What's the biggest thing in the universe?
Student named Stephenson born on 18th of February: Allow me to introduce myself 💪🏻
Would make one hell of a nova when it goes boom
Rip uy scuti
maybe it's there to light up the entire space on his location waiting other planets to be discovered. hope that james scope will help us
Maybe we didn't zoom in well enough? It might be a collection of giant clouds of cosmic dust, or a group of stars.
Then again, how accurate are our measurements observing far away celestial objects?
Beautiful 😍
Love Stephenson 218! It is a star for sure!
“Mankind” That’s what we are! Incredible discovery. Shame we can’t see it in the night sky but I guess this is in the Southern Hemisphere so us up in the North are out of luck anyway!
I posted a comment a few years ago that they'd detect a star larger than UY Scuti and they did. Given the vastness of space, they'll always be a larger star, in my opinion. But if it were placed in our solar system, I should think its light would make Planet Nine visible since its surface would surpass Saturn's orbit.
nice
DYSON SPHERE ON STEPHENSON 2-18
TYPE 3 CIVILIZATION ❤️😙
FYI......its sphere...not spear..........just sayin'.
Voiceover at times sounds like inspector Clouseau without the french accent 😄
Wouldn't doubt that there are stars out there 10 billion times the mass of Stephenson. Its a matter of time
Definitely
JWST may give us more information.
Nice vid
"Largest star in the universe"? Maybe "Largest star in our Galaxy". We have several galaxies that we haven't inventoried yet.
There's always a bigger fish
We gonna need a bigger solar system 👀
Bigger the star lesser the lifespan
We know Stardeaths such as a Supernova, Supernova Type A or a Hypernova.
But a Star that big might not just collaps into a Neutron Star or a Black Hole. And can the death of that Star even be called a Super- or Hypernova? May be we have to come up with a completely new therm...
Great Video. 😄👍
Aren't neutron stars from smaller stars?
@@SuperScottCrawford That`s what I thought too.
Super hyper mega nova
@@SuperScottCrawford our star is too small to become a neutron star, so no.
@@badactor3440 Not necessarily. It could still happen, the right conditions given, after it turned into a white dwarf. That's what you call a Supernova Type A then.
🤔 simply unbelievable!!!🤓🍻
Re: Size and relativity to c (speed of light) reminded me of something I thought of before. When looking at an image of something light years across, like a galaxy, are we seeing the shape of the galaxy as it truly is? Say it's 200k ly across and we're seeing it more from the edge from our perspective. If the light from the nearest edge is 200,000 light years closer to us, wouldn't the light from the furthest edge be 200,000 years old, thus not actually appear the way it seems?
Well as the the universe at this precise moment looks a lot different to what we observed now. A galaxy billions of light years away would be in a different positions at this precise moment to what we observed from earth at this moment. We are observing the past the further we observe. 😲
@@m101ist Thank you for the refresher.
Okay, instead of _billions_ , how about millions? Like 2.5? Andromeda... right next door. It's at an angle. It's 220,000 ly across. The stars that are further away, say 100,000 ly, the light from those stars took 100,000 years more to reach us than the front stars. So doesn't it stand to reason that those stars that are farther, need to be re-positioned in order to give an accurate image relative to the closer stars? Do you understand what I'm asking?
@@SuperScottCrawford Yep, it needs a repositioning but not...much. For Sun the galactic year, the time to make a complete circle around the galactic center is... 225 to 250 million terrestrial years. The gravitational effects also propagate with the speed of light, but the gravity well of the galaxy as a whole is already there for the individual stars to follow. So the (relative) stellar speeds are of no consequence on the bigger scale, the shape doesn't change too much if you observe a big, but slow rotating object and you want to compare with a snapshot at a certain "galactic Greenwich time".
Dude I was thinking the SAME thing yesterday! Like are they really spiral? Or a perfect grid that appears twisted due to the dilation of time and space
200K years is not even close to being long enough for a galaxy to change in appearance
Very cleaver young man. But it's turtles I tell you, turtles all the way down!
Your voiceover would fit in nicely in Schitt's Creek! A male version of Moira!
incomprehensible
I cannot take this guys accent serious it’s too difficult, I’m British and I’ve never heard this extreme posh accent before 😂 This guy is definitely from the 1800s because not a single British person sounds like this anymore.
Its an automated voice.
A real Steve Wander :-)
Interesting question I’m thinking about us what type of life form could survive inside of that system fascinating some type of extremophile no doubt
Just let your thoughts go out for a minute, they are comparing this star with our sun, Our sun has 99.6% of the total mass in our solar system, almost 1 million time bigger then earth, and this star make our sun look like mercury to our sun, JUST WOW.
I’m almost 100% that you can fit at least 4 humans in that star
4 is too small. I believe at least 7
@@Nonamelol. 7 might be stretching it a bit ngl
I will never understand why every human being doesn't take an interest in space and it's amazing and incomprehensible contents, size and mysteries.
Just Imagine if we lived on a Planet the size of Stephenson 2-18 and how many people would live on that planet?
Kosmo, 'good in outer space.' the day you make better videos than SEA, that's the day you will be first.
Imagine the supernova of that star lol
I know I'm ignorant regarding astronomy/ astro physics , yet it fascinates me. I understand there's a lot of math and math is hard but part of me believes in what i read and see from these scientists but also, part of me can't help but thinking that alot of it is conjecture. I mean, really, how do they know for sure, I mean really for sure, that a certain star's core is rotating? Just one tiny example/ question that floats through my mind as I'm tryin to fall asleep. lol
Incredible.
This star may have already gone supernova
I wouldn't want to be anywhere near that thing when it goes bang.
This star is only 20,000 LY away from us....UY scuti is less than 10k LY...imagine if we had eyes on the entire universe...there is a gargantuan star out there that is unseen for us..for now
My last names Stephenson. Awesome!
Were you born on Feb 18th? Aloha!
This one is a behemoth...there is big possibility that if the star is more than 30 solar masses, it could catastrophically collapse into a black hole accompanied by a GRB esoecially if angular rotation is high
So to illustrate a size comparison of our sun and Stephenson 2-18 using a high definition computer monitor, if the sun is represented by just one pixel, there would only be enough room on the monitor to represent just under HALF of Stephenson 2-18.
I bet there's even bigger stars out there bigger then stephenson 2-18 this is what's greatest about astronomy and its discoveries
I's funny that when the only tool you have is a hammer, everything looks like a nail.
In relation to space and time we are but pinpricks. One thing which have always wondered. Is there an absolute limit to size? Is there a size which theoretically once reached it could not exist in present form?. As the saying goes as soon as you say something is the largest. Nature will find a way to show you one larger still... But it does make you wonder.... originally was it a system similar to our own?.... is it just a giant version or our own system and is showing us on a grander scale what will happen here. Being that large For all we know it could have "swallowed" up lots of planets as it expanded. To get that large would we have a rough idea of whats its original size would have been? A great video thank you for sharing with us all :)
Recommendations- try not use very dramatic background music...
I had to watch this John Stephenson
The size of Stephenson 2-18 is now adjusted to probably a Diameter of: 3,003,000,000 km. 😎
Just think. It would take you 8 1/2 hours to circle it going 670,000,000 miles per hour. That’s a big boy.
Astonishing big
If this star is so big then time on one side of the star compared to the other must be out of phase, so if the star collapses on one side the other side wouldn’t be affected. Would the time lag stabilise the collapse?
Time is illusion, star doesn't exp time
Great question tho