WHAT IS A BROWN DWARF - A PLANET OR A STAR?

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It may be hard to imagine, but our Sun, which is relatively small for a star, is heavier than any of 95% of stars in the Universe. There are also red dwarves 11 times lighter than our host star. However, they are actually not the lightest objects out there. In the wide range between gas giants and the smallest stars in the universe there are some fascinating objects known as brown dwarves, or dwarf stars.
#Space #Star #Kosmo

[@Kosmo_off]

Hello everyone! How is life? What do you say? A video from the series: A BLACK DWARF: kzbin.info/www/bejne/baLRhIeurd2UY6s If you are a fan of our videos, feel free to support our project here: ➥ Support us on KZbin - www.youtube.com/@kosmo_off/join ➥ Support us on Patreon - www.patreon.com/kosmo_off

[@justsomepersononyoutube9271]

Sup

[@moldysann7083]

Doing okay here, 30 Series Graphics Cards are hard to find. Starting to think it some kind of mystery like the Universe

[@justfellover]

We've found brown dwarfs as cool as 300K? That's only a little cooler than me!

[@somedude5951]

I understand how the mass of planets, moons and the sun in our solar system is calculated using Newton's law. However, the mass of stars can not be calculated that way.

[@LordofSyn]

Your claim at the beginning is dubious , do you have the paper that cites this, please?

[@Xeno_Bardock]

A brown dwarf star is basically a gas giant planet but with its plasmasphere glowing brightly, mostly in infrared spectrum. Moons orbiting inside this plasmasphere would be hidden from telescopes. Life on its earth-like moons would have large eyes adapted to seeing in infrared spectrum. Also plants would be large and thriving on infrared photosynthesis.

[@aluisious]

How long could a moon orbit inside a sphere of plasma? Seems like there would be a lot of drag.

[@Z0E41]

Also stronger gravity and has an nuclear fusion

[@BattShytKuhraezy]

@@aluisious A+ radiation ☢️. Etc....

[@jurajokasa834]

There are some speculations that Jupiter is failed star that ended up being gas giant because Jupiter has almost all Stars ingredients but didnt have enough gravitational force to ignite

[@valraukardso7117]

​@@jurajokasa834 jupiter would need about 84x its mass to start fusion. So kinda a bit away from becoming a star

[@glenrussum9863]

When we Americans fake an English accent... we sound like this. Jolly good show though!

[@whowantstoknow1234]

Chewsday innit?

[@Andy_Babb]

Lol wth

[@scottydu81]

Oi, m8!

[@donm-tv8cm]

A habitable planet around a hot brown dwarf would be very different from Earth. Such a world would definitely be tidally locked. The side facing the brown dwarf would be bathed in dim red light and infrared radiation. Any complex life would develop "eyes" optimized for infrared, or perhaps use some sort of "sonar" vision. Either way, and probably even for a visiting human, it would be a world without colors. If intelligent life could develop in such a place, they would ultimately figure out that their "sun" is a cooling brown dwarf and that they're doomed someday to just freeze out (I guess that beats being scorched to a cinder by an expanding red giant like our Sun someday!) on a much shorter timetable than they'd have from a star. Perhaps they would wonder if life is possible around bright objects like stars? I do find it astonishing to learn that some brown dwarfs can take 10 billion years to cool!

[@Fairy_Ukraine]

Your English is getting better and better. 👍🏻

[@NazmusLabs]

I did not realize English wasn’t his first language, SubhanAllah! His english is perfect, Masha’Allah!

[@spartan876_A28]

What in the actual f-

[@BattShytKuhraezy]

JAJAJAJAJAJAJAJA!!! omfGAWD 👀 😱

[@maurizioibba869]

Great video. Thank you 🙏. I like everything in it; topic, graphics, narration, voice, sources ... keep making it , is a great way to learn.

[@HD_10180]

"But we want to talk about stars, not failed wannabe stars" -kurzgezagt or however tf you spell his name

[@Dragrath1]

Technically young low mass red dwarfs can support molecules in their upper atmospheres and in some cases they can even form clouds of exotic compounds like Titanium oxide i.e. basically rock clouds. Part of this distinction is that the line between brown dwarf and red dwarf is actually quite blurry as with additional/faster heat inputs (either collapsing abnormally quickly it is possible for less massive objects to be able to reach the temperatures needed for nuclear fusion become they can settle down into an "electron degenerate" state. Note that what we call electron degenerate matter is matter where electrons can't fall into lower energy states because those are all occupied. This can occur both due to high pressure or low temperature. The prior instance is what supports white dwarf stellar remnants, brown dwarfs and gas giants. The typical term we associate with degenerate matter are the same properties we associated with metals whether it be due to atoms cooling below the temperature where their outer valence shells energetically "want" to drop into lower energy states (Such as Lithium Beryllium Iron, Copper, or Gold on Earth) or high pressures driving hydrogen into metallic hydrogen deep within Jupiter, or carbon and oxygen within a white dwarf similarly into a metallic phase. Basically the question of whether an object can trigger fusion is only indirectly related to mass. A solar mass object if it was too efficient at losing heat would also fail to become a star it is just that hydrogen tends to insulate heat fairly well that this isn't an issue There are a small number of "main sequence" L type stars like 2MASS J0523−1403 those cool enough to earn the spectral type L but which still display characteristics suggesting they have achieved the threshold for hydrogen(Protonium) burning, despite their low mass. Nature throws curveballs at us every time we try and finely define categories like this

[@mdtalhaansari1096]

7:25 "Brown are rather cool objects for stellar standards." I saw what you did there.

[@stxdude830]

That brown dwarfs aren’t that hot ?

[@NazmusLabs]

@@stxdude830 Aint do hot but still pretty cool 😅

[@kennethgregoire9863]

He didn’t do anything

[@chamelionvibe9426]

Kudos to the cameraman that travelled mind boggling distances to bring such awesome videos of the stars in action

[@garygray6545]

Very intuitive and great graphics! Luv this stuff! :-))

[@razzikhan1980]

Such a great channel, waiting for the videos and just uploading after 7 minute's I am watching it. 👍👍

[@josepmariamarin4912]

Fascinating. Thank you 👌🏻

[@marcelosoutocamiou9363]

Excelentes videos siempre. Muy bien explicado. Gracias.

[@esk8er900]

Top quality videos. I’ve seen a good number of yours and tons of others but yours are up there with the best!!

[@Geckobane]

Always appreciate your videos. Thank you for making them.

[@Felix_Fausto554]

3000K is like an incandescent bulb.

[@thamirivonjaahri6378]

In regards to possible life, planet would have to be very close and it would largely depend on how quickly BD cools down, but potentially there can be something quite significant considering BD is unlikely to flare up, or produce any significant stellar wind. Proximity of planet to its star may also cause significant geological activity due to tidal heating, which also may help propagate any potential life on its surface.

[@aluisious]

It seems like they'd be good for colonization, but I'd also think the magnetic fields could be a problem. You can't really go outside on the first three Jovian moons because of synchrotron radiation from Jupiter.

[@thamirivonjaahri6378]

@@aluisious Radiation can be a problem, but thing is even today we do have a tech that can deal with hard rad in relation to habitats fairly effectively (unless someone gives a contract to build habitats to guy like Vilos Cohaagen, that is...)

[@BattShytKuhraezy]

Or DESTROY everything. 🌎 crust is like aluminum foil on a 1' globe. VERY thin

[@swarajgaikwadd]

This is amazing...keep up this amazing work 😁♥️

[@susanariveracabrera764]

I like very much your videos. Thanks for giving us this kind of information. I think brown dwarfs and dwarf planets can give us a clue on how the Solar System and some other planetary systems were originated. Though Solar System had been explored with probes and detectors at the high atmosphere, there is still so much we need to investigate. Nevertheless, I think with the data that all these devices have sent us we should probably reconsider our theories on the formation and evolution of the Solar System, and to try to understand that it's behaviour is not purely gravitational, but highly magnetic and electric. Please continue doing these high quality videos. Have a nice research!

[@Seventeen_Syllables]

If life developed on a planet orbiting a red dwarf, and that life developed sight, it would probably be specialized for infrared. If it went on to develop astronomy , what might it think of its nearby stellar neighbors? At what point would it realize how much light there is above infrared? With no seasons as we would recognize them, would this life form be suited for the challenges of interstellar spaceflight? They would have the time, and it would probably make for some good fiction.

[@TheTalemaster]

One of the grosser entertainment experiences in life is being interrupted by KZbin ads *every 3 minutes* in a 10 minute video. Pure monetization greed! The irony is that my subscribers complain when there is even 2 ads in one of my 2-hour long audiobooks--ads which are conscientiously placed at the end of one story and the beginning of the next!

[@victorandrade9353]

Just tô point out your videos are just awesome. Congrats on making such great and complete content!

[@PalmtreeWpg]

Fascinated to hear the coolest would be as low as 300K / 25C, I wonder what the conditions in its atmosphere would be. Forgetting life in orbit around one, what about life ON a Brown Dwarf in those relatively temperate conditions?

[@kawafahra]

Mass would crush any life, but keeps the corpses comfy

[@BiggestCrackedBas]

There are some orbiting them probably. But probably is like %98. Their planets usually have cold colors like yellow,red,Brown,black. And of course, white.

[@gary4689]

@@kawafahra are you certain it would kill all life. Certainly all of earth's multicellular life, but that doesn't necessarily mean that a form of life adapted to similar extreme environmental conditions wouldn't be able to exist.

[@tubalador]

@@kawafahra Not in it's upper atmosphere where gravity and atmospheric pressure is lower.

[@martinleithe8251]

Love this videos. I just watch them and enjoy whatever you bring for content. Calming voice to listen to. Space is interesting. Keep the content coming! Thank you kosmo :)

[@ybkseraph]

Sustaining an habitable zone for 10 b years is quite enough time for life to develop.

[@jacobs-corner]

That might be correct, assuming the emergence and development of life on Earth represents an average pace. Although, we cannot know, as we have nothing to compare earthly life with. It could be that we were just lucky, and it usually takes 100 billion years to emerge and develop, if the conditions are right.

[@stephenmassey5421]

Electromagnetic energy plays a significant role in the stability of a Star. The mechanics of a Star suggests that it's trying to Implode and Explode at the same time. Electromagnetic energy seems to stabilize the two interactions with one dominating the other slightly in a back and forth tug of war with the same counter rotating levels of atmosphere as a Gas Giant. Do Red dwarves interactions resemble the same pattern?

[@lanorothwolf2184]

Narrators accent is just perfection, they could describe taking a dump in a way that would sound really smart.

[@masamune2984]

Wonderful video! Thank you! Love the channel ❤️👍

[@Kosmo_off]

Thanks! 😉👍

[@BattShytKuhraezy]

DITTO

[@InnoFTW]

It's a huge disappointment to their mom

[@saxmidiman]

I dunno, was Tattoo a Planet or a Star? Ask Ricardo Montalban!🤣🙄😎

[@rogerrude313]

So theoretically since the brown dwarf hasn't obtained the elements needed to create and substain thermonuclear fusion could it be given those elements to kickstart it into become a proper star?

[@FlynntheBookseller]

I was thinking the same thing. I want to throw gas at Jupiter and see what happens

[@ennui9745]

Yes, if you add more mass to it...or compress it further. An extremely advanced civilization could ignite a brown dwarf by constructing a megastructure around it for that purpose.

[@BattShytKuhraezy]

@@ennui9745 or both ...COMBO PLATTER

[@Ampsinthejump]

Very informative.. Thank you

[@michaelstaengl1349]

It's kind of both. So, I suggest such names like: - Plar = PLanet+StAR - Stanet = STAr+PlANET

[@zainadam2364]

A planet or a star? Brown Dwarf: YES

[@lemonicity4834]

keep up the great work!

[@MariusRomanum]

Brown dwarfs are the intermediate between planet and stars

[@dbsti3006]

I feel that most systems have either a gas giant, or a more massive companion that ends up making it a binary system.

[@achaille9110]

That is true. Most solar systems are binary stars. Some have 3 or more stars. Our nearest neighbor Alpha Centauri is a binary.

[@dbsti3006]

@@achaille9110 It's like Jupiter was meant to be a red or brown dwarf companion, but never made it.

[@achaille9110]

@@dbsti3006 - Perhaps but, one has to be careful what to wish for. Our solar system has done us right, so far. If Jupiter was 10 times bigger, no telling how things might have gone.

[@dbsti3006]

@@achaille9110 Yeah, we wouldn't exist. The universe is a delicate, sensitive, and yet chaotic place. Everything had to fall into place for our existence. It's making me rethink how many advanced civilizations there are in our galaxy.

[@achaille9110]

@@dbsti3006- Good point. With all of the new space telescopes, looking at so many other solar systems, ours seems fairly unique. We would not exist, if it wasn't. But then, it could be that there are civilizations that are not within a few hundred light-years. If they just developed radio communications within the couple hundred years, their radio signals haven't reached us yet. The Milky Way is 100,000 light-years across. There could be lots of sentient life, just way too far away.

[@gayottroyo5443]

Keep in touch kosmo

[@versvel2245]

Kurzgesagt (while looking down at the brown dwarf): A BIG FUCKING FAILURE THAT'S WHAT YOU ARE, BACK TO YOUR CORNER OR I'LL PULL OUT THE BELT

[@versvel2245]

the contrast that I felt when someone finally talked about a brown dwarf in a condescending voice was a big one

[@perrylaszki]

The light around black holes are atoms spinning so fast that there separating. If there was an explosion ether that caused a the star, then it clumped together because of gravity. It would have to be center of mass to even become one.

[@mikioni]

Excellent video 👏👏

[@geemanbmw]

Excellent video. I would like for you to do a video on on early K type stars , all of G type stars and late F type main sequence stars. But please no M type. Stay more focused on sun like stars that would have non tidally locked planets as those mentioned. For these are most supportive for life as we know it. And before I get any feedback late F type stars do have potential. Anyway thanks!

[@ericthompson3332]

Would like to see a brown dwarf!!

[@jlawsl]

I have to wonder how much more powerful the magnetic field within the habitable zone of a brown dwarf would be. Jupiter's closest, larger moons are bombarded by its radiation. I wonder what the conditions would have to be for life to extist.

[@BattShytKuhraezy]

ABSOLUTELY. DISPARATE. ENVIRONMENT tho

[@ldubt4494]

Well they would have evolved to withstand all this.

[@whatcouldpossiblygowrong4970]

Great video

[@colinp2238]

The real problem that we have searching for life, is that we only have one example to go by and do not really understand the question, mainly because we do not know enough about life.

[@colinp2238]

@PoorMans Chemist We only know about Terrestrial life but we cannot imagine how life could be off the Earth.

[@antwan1357]

Totally under rated story good stuff.

[@bharatsingh8604]

Plzz bro make a video about red dwarf stars. They are one type of stars which we must know off.

[@Dangarrido15]

could you use the international measure scale next time?? I was completely lost when you use K° instead of C° !!!

[@AxionSmurf]

Stars and proto-stars are almost always referred to in units Kelvin in astronomy videos. The only time I ever hear C or F used is when someone is trying to be dramatic by comparing something's temperature to the Sun while using the coolest part of the Sun for comparison

[@joshuamcbride5019]

I imagine that the radiation belt of the brown dwarf is bigger than that of Jupiter so if a planet were to be in a habitable zone it would be irradiated. I could wrong though, I never took any advance sciences and am basing my opinion on documentaries and my understanding of them.

[@DARTHNECRION]

I have to wonder what a brown dwarf would look like with the naked eye. How close could astronauts orbit one? Would they be at risk from gamma radiation?

[@joserolon300]

Nice video Loving everything

[@TheCoolsparks]

It only took 50k years for sapiens to evolve into a class C civilization. So intelligent life could very possibly evolve in planets orbiting brown drawfs

[@raffaellouis4326]

CoRoT-3b maybe on the both classification sides which means Planet/Brown Dwarf Hybrid

[@chadtrump7009]

I see primitive life forms driving in Chicago every day

[@DoktorSpakur]

YT commercials just keep getting longer and longer and louder and louder

[@alexincobra7379]

Ok, this is confusing. I thought brown dwarfs had to be at least 80 times the mass of Jupiter? This talking about objects 5 and 22 times mass of Jupiter. Those would just be more massive gas giants or rogue planets.

[@commandvideo]

Damn 300 kelvin is about 27 defree Celsius! Very pleasant temperature for humans 😊

[@captainjackpugh6050]

Advice: Starting in the beginning of the video(I couldn’t continue watching) there were an insane amount of flashing every few seconds. It would be satisfactory if this didn’t happen. :)

[@bernardkuhar9563]

Its wrong to say "degrees Kelvin"

[@SedatKPunkt]

Among which atoms fusion takes place and how long do these fusion events occur? Which maximal temperature a brown dwarf is able to reach? When the hydrogen gas cloud collapses is it foreseeable that it won't even reach the red dwarf level? ➱ Hydrogen fusion kickstarts at 15*10⁶ °C (AFAIK) Does this also happen when a brown dwarf is forming but later gets lost? Once I've heard about Lithium fusion which is bigger. I've watched this clip to know if I remember that right and wanted to learn that in detail… In case, there is something up with it, did I miss it or didn't it get covered it

[@syedmuneerpasha7417]

Xcellent data.

[@ray1956]

Our UNIVERSE is infinite with INFINITE possibilities. The more we see, the more we understand, that we DON’T understand👨🏿‍⚕️🤓keep searching🔭👏🏿👏🏿🦠💉😷

[@tyquanfleming8554]

😃 new year

[@raybowman9425]

anything can happen in the universe

[@PETSIM99LOVER255]

How stars are formed From nebula hydrogen collision ----> asteroid -----> small planet ----> terrestrial planet -----> gas giant -----> brown dwarf ------> star Or it can be formed by God

[@PETSIM99LOVER255]

Forming of blackhole ---> can be in Wr,HM,Ygt,C,S types

[@PETSIM99LOVER255]

Or red supergiant or outpatient or quasi star

[@PETSIM99LOVER255]

Same as neutron star

[@robertevans8126]

Well, our system has a Brown Dwarf Star we call Nemesis, and we have a Black Dwarf, or a Cold Dwarf.

[@jessejamison-oq4oe]

Okay so Brown dwarfs are under 5000 degrees Fahrenheit

[@BiggestCrackedBas]

THEY ARE COLD.

[@jboza]

I really feel gas giants are brown dwarfs. They’re very similar and hold planet like worlds too.

[@BattShytKuhraezy]

Keep FEELING !!!

[@symbion13]

If the lowest temperature could be around 300 K, surely life could develop in someway

[@jessejamison-oq4oe]

It wouldn't be a good idea to live on a brown dwarf star but near it would be just fine... I have no doubt that there would be primitive life.... Maybe in some cases there may be some form sentient lifeforms.

[@Schattennebel]

If there are this much brown dwarfs should this mean that if enough brown dwarfs collide this would be the last birth of stars in our universe when all dust and gas will be already used?

[@Strange087]

I want to live on the stinkin thing I wonder if it's warm enough 😶

[@donniedaves2131]

Webster or Gary Coleman.

[@sparlo3865]

A Brown dwarf is not a planets nor stars They are disappointments to there moms

[@chamikk90]

u mean misspelled "huge disappointment to their mums"

[@colinp2238]

Think we've all been there and done that.

[@Rhythm911]

I wonder if those really large planets that orbit B. D.'s could have once been a Binary twin?

[@TheKenzoidElkhorn]

Let's keep in mind there is a possibility of organisms that breathe carbon dioxide or monoxide.

[@user-ti8tq7tk8u]

So in other words Jupiter is more of a brown dwarf than a brown dwarf is 🤣🤣 got it 👍

[@jerrdnn3373]

He says cold like zafrank1 does as a joke lol

[@getovryourslf4444]

Need more videos that evoking thought about seeing a stars light but the star is already burned out. In sure that can't be every star! And if we can see a super nova across the galaxy is it still there or not? How far away does a star have to be that we only see the old light but the star is dead or gone? I just feel like you don't know as much as claimed.

[@imsyed5]

So SUPERMAN was from a dwarf sun system

[@Schemez-16vhiphopbeatz]

Its a planets thats big enough to fuse a few elements but just can maintain nuclear fusion so they have an infered glow ...jupiter is not a one if a brown dwarf is a failed star jupiter is a failed brown dawrf

[@metalchick2726]

Seizure warning for the rave show during the first :30

[@lunamaria1048]

It's amazing how the majority of people don't know that this is all theoretical, based on the current most widely accepted theoretical model of star formation. Black holes, neutron stars, white dwarf stars, dark matter, dark energy etc are all theoretical objects made up and never actually discovered. Scientists make up these objects and forces, then cherry pick objects in the sky to be the objects they made up, 40 years before.. If you guys actually knew how little we know, you'd see space stuff different, as I do. I'm a newly graduated PhD (Pharm Sci), and my father was an astronomy professor, AND worked in an observatory.. He told me that cosmology today is "nothing more than bedtime fables"... He retired very frustrated with Cosmology as a whole... Scientists today are programmed to think a certain way, and to not question the status quo, or think critically

[@dragoned7685]

Well now, with the photo of Messier 87, the existance of black holes has been proven.

[@lunamaria1048]

@@dragoned7685 That wasn't a photo... That project was a global array of radio telescopes collecting data, from the same point... Radio telescopes can only collect data.. They can't take photos... This "photo" you are referring to was a man made representative of some of the data.. That data will take years to comb through, so I'm curious why that computer made photo even exists

[@nayanmipun6784]

Somewhere in between every thing obviously have States in between as these states in between too are actually the original of matters

[@TheWatermelonSquad1000]

A Stanet

[@antoniocruz7305]

Brown Dwar 😂

[@teapotmclaren]

The feedback - "...because of gravitational FORCES" - Gravity is not a force. "3000 DEGREES Kelvin" - Temperatures in K are not measured in degrees since is an absolute scale.

[@drchanga5587]

Why people keep insisting using degrees Kelvin? Geez

[@bradpitts289]

What's the name of the one that you said was 9 l. Y. Away from our sun I won't to know about that one..

[@raymondready7496]

Nibiru....lol

[@alexroberts590]

Nothing of our first infared telescope I.R.A.S. TELL THE TRUTH! Only a glimpse of what should be said.

[@guitartrav4299]

...Brown Dwarfs Matter...🤔🤔🤔..... ....awesome video!.....

[@surachatngangit4447]

การต่อสู้พื้นฐาน */ค่าส,ป/การต่อสู้พื้นฐาน*...//....//.... */หลั้กฐาน/การต่อสู้พื้นฐาน 2 แท่ม* */เอ่กส่าร/การต่อสู้พื้นฐาน 7 ใบเบิ้ล* */หนั่งสือ/การต่อสู้พื้นฐาน 3 เล่ม* ช */หลั้กฐาน/การต่อสู้พื้นฐาน 1* ว */หลั้กฐาน/การต่อสู้พื้นฐาน 2* รา */เอ่กส่าร/การต่อสู้พื้นฐาน 1* ลาวี่ม */เอ่กส่าร/การต่อสู้พื้นฐาน 2* อ */เอ่กส่าร/การต่อสู้พื้นฐาน 3* ล */เอ่กส่าร/การต่อสู้พื้นฐาน 4* โฏ้ */เอ่กส่าร/การต่อสู้พื้นฐาน 5* ใญ */เอ่กส่าร/การต่อสู้พื้นฐาน 6* เด้กร่อ */เอ่กส่าร/การต่อสู้พื้นฐาน 7* ป */หนั่งสือ/การต่อสู้พื้นฐาน 1* ป */หนั่งสือ/การต่อสู้พื้นฐาน 2* ป */หนั่งสือ/การต่อสู้พื้นฐาน 3*

[@opencarry3860]

A brown dwarf? It's a Mexican that is shorter than four feet in height.

[@abdallah9829]

🌷قبل1442سنة،يخبرنا الله سبحانه وتعالى عن السقف المكون من 7طبقات لحفظ الحياة والإنسان، بسم الله الرحمن الرحيم : * {{وَجَعَلْنَا السَّمَاءَ سَقْفًا مَّحْفُوظًا ۖ وَهُمْ عَنْ آيَاتِهَا مُعْرِضُونَ }} (الأنبياء~32) * {{ وَالسَّقْفِ الْمَرْفُوعِ }} (الطور~4) * {{وَبَنَيْنَا فَوْقَكُمْ سَبْعًا شِدَادًا. وَجَعَلْنَا سِرَاجًا وَهَّاجًا. }}( النبأ ~12) سبع طبقات لحماية الإنسان والحياة.

[@Serenoj69]

This is all not correct. The coolest real L dwarf stars are a lot colder and near 2000 K. Also the 80 MJ is not correct. The smallest real star is 70 MJ while the heaviest Brown Dwarf is 98 MJ. This is possible because very low metallicity Brown Dwarfs cool off easier than those with high metallicity. So in theory a very heavy brown dwarf could swallow a low mass star and become one itself! Also":uhman 16 is the closest Brown Dwarf and it is binaire system of two brown dwarfs and 6,5 ly from Earth, not 9 LY.