Smallest Black Hole Ever Found Cannot Be Unexplained and Seems to Be an Anomaly

[@george1la]

I am 77. My father, Charles Buzzetti, was a founding member of Stony Ridge Observatory. I went with him to all the meetings and work parties. George Carroll and the others were prescient genius's. Astronomy has changed so much since then. Even the 200" at Palomar was nothing to the present tools. I also used to live on Mt. Palomar. These new tools are opening up new horizons. You are super good at explaining these complex issues to people like me who do not have your and the others capabilities. Even amateur astronomy is dramatically different and they also have the high tech tools.

[@Thedudeabides803]

I watch this channel after the kids go to bed and I’m cleaning up the kitchen. When my 8 year old hears Anton’s voice he runs downstairs to watch because he loves space and astronomy. His mom is not happy I let him watch but I can’t be happier to keep him up late on a school night if he wants to watch. 😊

[@kempokiin6280]

My experiences relate in many meaningul ways, while simultaneously diverging in others

[@raskov75]

Long standing rule in our house is that bedtimes/curfews can be amended when science content is on the table.

[@aniksamiurrahman6365]

Well, u guys can watch together b4 their bedtime?

[@setitfree78]

What a boring life.

[@RedRocksies]

What a weird thing to be not okay with. Is she religious or something?

[@matthewcummings5067]

So if I understand correctly, the proposed sequence of events was something like this: 1. Triple star system, three stars orbiting each other. 2. Each of these stars progress in their life cycle independently (makes sense, they're all different stars). 3. One of the stars turns into a neutron star, the other two are red giants by this point. 4. The neutron star gets absorbed by one of the two red giants, forming a TZO. 5. The TZO eventually collapses into a black hole. 6. The other red giant remained throughout all of this, resulting in the current system of a single red giant in a binary system with a black hole. That's my best understanding of what you're saying here, but I could be wrong. We started talking about TZOs, and I assumed it was to explain the black hole, not the red giant it's orbiting.

[@aralornwolf3140]

Concise synopsis of the video. :)

[@ksongmaker1711]

One of the fallen triple powers.😢

[@patrickgriffiths889]

Yeah. They need a sequence of events that results in a black hole of the right mass without any big booms that would mess up the circular orbit.

[@DarkFox2232]

Welcome to: "Three body problem." And: "Perfectly circular orbit result."

[@Sutairn]

There is way better way to explain this without as many needed steps, step 1: a generation 1 star or population 3 star formed with around 70 to 90 solar masses, step 2: this star collapses straight into a blackhole, step 3: a star is formed around the blackhole due to matter lost during the blackhole collapse, step 4: 16 billion years passes by the star is now a red giant in a circular orbit around the blackhole. This could be our first observation of a generation 1 star which I think all should have become blackhole at this point.

[@reddportal]

There is nothing better than Anton telling us about black holes and exotic stars ❤

[@digbysirchickentf2315]

It could be better if he showed any actual data, all we get is pretty cgi.

[@reddportal]

@@digbysirchickentf2315 He links the research papers and all his sources... so... I mean, click the links?

[@digbysirchickentf2315]

@@reddportal I did try a few, and found no data. We all could spend hours looking through it individually or Anton could do a better job. What do you think?

[@reddportal]

​@@digbysirchickentf2315 So two of the links are to the research papers that Anton has based this video on. One is pre-print, one is behind a paywall. The pre-print is 77 pages long with many, many graphs and data sets. I'm unsure what you want Anton to do differently? Unless you want him to literally read the paper to you? It is not unreasonable for Anton to present a discussion around the topic without going into the details of all the data, he isn't writing a research paper, he's creating short form content on KZbin. If people want to learn more they can read the actual research that is linked, like I just did. As someone with a literal career in research, I'm not sure what else you wanted? He's discussing it, linking to sources, is balanced and engaging, and bringing really dense scientific discoveries to a wider audience. It's not his job to detail every single data point, this isn't a presentation at a research conference ffs 😂

[@digbysirchickentf2315]

@@reddportal So did you learn anything?

[@charlesjmouse]

When dealing with any discovery that makes no sense: a) You're wrong about the discovery, b) You had a failure of imagination, c) Your assumptions are wrong, d) Your 'understanding' needs rethinking... ...e) And only then do you need a new base theory. Another excellent video, thank you.

[@Strype13]

"We now have data for approximately 1.5 billion different sources, which equates to approximately 1% of the entire Milky Way." That sentence, alone, completely boggles the mind.

[@davidcarlson2152]

I did a double take myself.

[@simoncleret]

Clearly we need more layers. Black holes inside of neutron stars inside of red giants!

[@jimcurtis9052]

Wonderful as always Anton. Thank you. 🙂

[@George-rk7ts]

Another awesome video by a wonderful person. Thanks, Anton.

[@cloudalien443]

"Cannot be unexplained" 🤔 Thanks for another wonderful video. They've become some of the most peaceful minutes of my day, early in the morning, or late at night.

[@weaponizedemoticon1131]

Oh good. I didn't look far enough before I made my own comment.

[@yfarrell]

Thanks Anton. You show us all these rare objects I would never have heard of. The potential is incredible.

[@WTH1812]

This is what happens when 2 neutron stars get friendly and "hug". No word on any kids yet.

[@WarkWarbly]

D'AAAAWWEE!!! That's a stellar story! You think there are space storks?

[@WTH1812]

@@WarkWarbly ... Those are the lost UFOs

[@danij5055]

Really it's a story about family 😉

[@dosesandmimoses]

Thank you Anton! I appreciate your content!

[@tylerj.6973]

HAHA now I am notified of your uploads IMMEDIATELY

[@marfmarfalot5193]

Okay actually detecting a mass gap black hole??? That’d be crazy

[@skoitch]

Ligo filled the gap in 2019, the only gap was in our ability to see them!

[@Masoch1st]

We have detected a few intermediate mass black holes now

[@marfmarfalot5193]

@@skoitch is that true though? Isnt there still the 3-5 solar mass gap?

[@skoitch]

@@marfmarfalot5193 we believe that 3-5 masses would be a neutron star. I don’t think the Universe is old enough for a black hole to have radiated enough mass to become that small.

[@skoitch]

@@marfmarfalot5193 check out PSR J0514-4002E, it’s def close to that grey area!

[@kingnarothept6917]

Thorne-Zytkow Object confirmation?! I never thought I'd see the day!

[@Adoyleonon]

This isn’t confirmation, yet. Rewatch the end.

[@scottdorfler2551]

Thorne-Zytkow Object. Of course 😂 Never heard of it, but I've wondered what a neutron star inside of a star would look like. After all, neutron stars and black holes go where they want and do what they want. Imagine the chaos inside and outside of that star.

[@civirebel]

Hello Anton and other wonderful people.. ❤

[@arctic_haze]

Interesting. This is a quite amazing proposition and unlike many others, actually one that makes sense without requiring some very weird new physics.

[@pandamonium7996]

We love very weird new physics, and we love things that make sense without requiring it.

[@arctic_haze]

@@pandamonium7996 I love weird new physics when it's real. But I got burned with things like supersymmetry and generally the string "theory". Seeing the title I was afraid that the "anomaly" would be something like that.

[@stusacks2220]

Very interesting video Anton. Thanks!

[@andycordy5190]

In the super bewildering variety among the billions of objects we see in just our own galaxy, is it really surprising that we detect some that don't fit our classifications? I have only been following Anton for a few years and in that time the variety of stars we observe and the new vocabulary we need to encapsulate those discoveries has grown hugely. Keep rewriting the dictionary, Anton.

[@Deeplycloseted435]

Leg day in an hour. Enjoying a delicious egg sandwich and some strong coffee, while watching Anton. The sun is shining, the birds are singing. Its a beautiful day, for all of us beautiful people. The world is a scary place sometimes, but don’t let it stop you from enjoying our existence.

[@oszb]

This comment + the user name, what a cacophony of a personality going on here, wonderful.

[@catsdrooltoo]

Thank you Anton! ❤

[@WaterShowsProd]

The idea of stars becoming internal parasites of other stars is really interesting, I'd not heard of TZO Objects before. I'd imagine the merger would be slow, over a long period of time, during which time the denser star would be feeding off the larger one, slowing down in the process, and moving closer, before finally burrowing its way below the surface, rather than a cataclysmic collision. Quite interesting to think about.

[@illegal_space_alien]

Stars are plasma, so no hard surface. Plus a neutron Star is much denser than anything else in the star. So it would be like dropping a boulder from a plane through a cloudy sky. Although, I wonder if while it was happening, if it would look like a giant sunspot, or a caving in of the site, as the plasma gravitates toward the neutron star?

[@intotron6708]

@@illegal_space_alien I imagine one could see an enormous accretion disc around the Neutron Star, fed by its victim.

[@denysvlasenko1865]

The NS would distort the other star with tidal effects, and if close enough, would start accreting the gas from its outer atmosphere. The accreted gas immediately thermonuclearly "burns" to helium when it impacts the NS surface, and accumulated layer of helium periodically (with periods on the order of one day) explodes, producing a mix of nuclei, starting with carbon and going somewhere into lantanides, IIRC. We already observe many such objects, they are called "X-ray bursters". The explosions are too weak to expel material from the NS, so its mass increases until it collapses into a BH. Then BH would continue siphoning the gas from the other star, not without explosive X-ray bursts, until it "eats" it completely.

[@Duane_Day]

Love all of your work Anton and even though I eagerly await your latest videos you should take the weekend off! 😉

[@chad0x]

incredible amount of lensing at 2:28 blows my mind as to whatss going on there

[@aaron_d_henderson1984]

I think Anton accidently stated the solution at 3:51 (the rest of the video never disproved that it wasn't previously a neutron star) granted it would be cool if this was actually a TZO

[@valinorean4816]

the mass doesn't match, you didn't listen carefully

[@systemchris]

​@@valinorean4816could be a neutron star that took on more mass at some point and collapsed more

[@intotron6708]

@@systemchris Thought of that also. Like a White Dwarf becomes a Nova or a Type I Supernova, so the Red Giant made the Neutron Star too fat to hold it. However, then the current Red Giant would still feed the now Black Hole, and it would not be dormant.

[@solanumtinkr8280]

@@valinorean4816 A neutron star is a degeneration mass that has yet to collapse, like a blackhole is a ridiculously slow motion implosion. One question to ask is, what could cause a neutron star to under go a early(as far as we are concerned) implosion...? It's also small enough to be an early universe blackhole... It had rather unique conditions back then... The blackholes we see now are mostly post Ionization(?) era.. Galaxies like we see today formed far far faster than anticipated, so the reason for that could be linked to the other... ?

[@bjornfeuerbacher5514]

@@solanumtinkr8280 "One question to ask is, what could cause a neutron star to under go a early(as far as we are concerned) implosion...?" It could accrete material from its partner star until it becomes so massive that it implodes. But in this case, apparently the partner is too far away for that.

[@jajssblue]

Neat! Maybe primordial BH?

[@BobHenderson-dr2wy]

Finally! I always wanted to know the smallest sized temporal mass hole ever seen, since that might explain how long they stay around and/or if radiant loss is real or not

[@alberon554]

i have never seen you so excited about a finding ...thrilled!!

[@nilo70]

Hi wonderful Anton !

[@alanhyland5697]

Hello wonderful Anton

[@anthonyalfredyorke1621]

Thanks Anton, great video BLACK HOLE'S are super complicated 😮 , Have a " WONDERFUL" Week and keep WAVING . PEACE AND LOVE TO EVERYONE ❤❤.

[@JohnKuhles1966]

Almost every video Anton Petrov produced, he says: "A Lôôôôôt of" .... ;) ... How he pronounces "a lot" in such a weird way it is cranking me up every time I hear him say it again ... But I super appreciate his efforts bringing (weird) new interesting stuff every day.

[@captain_context9991]

"Captured" orbits are incredibly hard to imagine when looking at the probabilities and circumstances required for it to happen. Almost impossible to ever justify as a probably explanation for anything.

[@MCsCreations]

Fascinating!

[@yvonnemiezis5199]

Exciting, thanks Anton👍🤔

[@stevenkarnisky411]

If the black hole is more distant than we thought, that still does not explain the circular orbit. Thank you, Anton!

[@cpgphone]

Thank you Wonderful Person for keeping me company during the late painful nights.

[@tiagotiagot]

I dunno how it would work out in the scales involved here, but in many cases circularization is relatively trivial when there's adequate distance -based drag gradients allowing for cumulative aerobraking bringing the apoapsis closer to the same altitude as the periapsis; or alternatively via tidal interactions gradually finding a balance between orbit and rotation speed, bleeding off excess energy via the friction caused by the tidal effects. Perhaps the drag explains why the blackhole is quiet now and possibly even how it formed; as it collided with the wind/atmosphere of the partner star it cleared the orbit while circularizing and grew in mass with the matter it collided with.

[@Egg-noodles]

My heart wants to believe it's a Dyson sphere

[@dltn42]

Hello handsome Anton 🥰

[@alexandreperron6106]

Anton, you are a national treasure.

[@xM471k]

Continuez votre bon travail.

[@mickgibson370]

3.6 solar mass It depended on the spin on the object. High spin, the object turn in a neutron star, low spin it will become a black hole and will spin up as the black hole shrinks!

[@ilkoderez601]

I don't think you mentioned how massive the red giant was... Would be nice to take into consideration give the circular orbit.

[@Dawid-v2j]

If it is a TZO, 3.1 solar masses seems kind of small for a neutron star + red giant put together. But if this answer from chatgpt is accurate it would be in the normal range. The smallest red giant star observed in terms of solar mass is typically around 0.8 solar masses. Red giants are evolved stars that can range between about 0.8 to 8 solar masses, but the lower limit tends to be around 0.8 solar masses. Stars with masses lower than this will not reach the red giant phase and will remain as white dwarfs after leaving the main sequence. For neutron stars, the smallest observed mass is typically around 1.1 to 1.2 solar masses, though neutron stars theoretically can have masses as low as about 1.0 solar mass. Most observed neutron stars have masses between 1.2 and 2.0 solar masses, with some extreme cases nearing the Tolman-Oppenheimer-Volkoff limit (around 2.16-2.5 solar masses) before collapsing into black holes.

[@denysvlasenko1865]

There is a link to arxiv's page in the video description. The paper says their estimate for the visible star: mass 2.66 (+1.18 −0.68) M⊙, radius = 12.97 (+2.43−1.77) R⊙.

[@sojourner.]

No BH accretion disk, not even an old one with faint IR spectra? Companion star not stripped of loose outer layers which would've resulted from the black hole's nova? In nearly perfectly circular orbit which all but rules out a capture, conflicts with lack of nova evidence? AND in the mass gap? Half-decent Dyson sphere candidate.

[@bjornfeuerbacher5514]

??? A Dyson sphere would look totally different.

[@Pseudo___]

0:13 pre watch my guess is some white/neutron mergers

[@jsEMCsquared]

If stars can travel the galaxy then black holes can too!

[@Duke_Romilar_III]

Stars travel first class. Black holes travel economy, and on standby.

[@CelticRover42]

Pretty amazing we just mapped 1% of the Galaxy's mass signatures, the kinda thing you'd need for Hyperspace Maps.

[@franks4973]

What about a failed binary star? 1 that has enough mass to ignite but not enough to maintain for very long, it then collapses and feeds on the dust/gas cloud in its rings around the main star.

[@carmenmccauley585]

Fabulous.

[@von_Nett]

Question: Is there an explanation for the huge diffenrence in parallax values for G3425 between Gaia data set 2 and 3? And wouldn´t MCMC always produce something close too idealizied distribution when the used data sets are that far apart?

[@vanzilar]

Could this have been a trinary with 1 red giant and 2 low mass neutron stars that merged via a kilonova into a very low mass BH?

[@bjornfeuerbacher5514]

Yes, they mention that possibility in the scientific article Anton linked to.

[@RaymondSwanson-u9y]

This could be an example of direct collapse. That star may have captured the black hole in its early life.

[@alfredmontestruc5466]

My suggestion, the neutron star had a fairly high rotational speed, which was more or less closely aligned with the orbit around the red giant, that was inside the red giant. The neutron star impacted the fluffy portion of the red giant, and was slowed by accumulating mass from the red giant this Slowing continued, but the rotational speed remains high, and it was in such a direction that it created as the moon does on the Earth a tide that tends to cause the neutron star now black hole, To retreat slowly from the red giant. Eventually, it will emerge from the low density portion of the red giant and continue to retreat by tidal interaction.

[@alfredmontestruc5466]

The tidal effects are mainly physically on the red giant’s atmosphere.

[@RechtmanDon]

Hawking radiation? If a black hole can lose mass, is it not possible that even a large black hole could reduce in size even below that of one solar mass?

[@shawnirwin6633]

That is somewhat along the line I was thinking, but I was thinking that, somehow, it was a star forming from a small black hole leaking Hawking radiation. Pure speculation, of course.

[@burgzaza]

Eventually yeah, but over extremely long periods of time!

[@RechtmanDon]

@@burgzaza If this was a small BH to begin with, and as is suggested it is quite old, then maybe... ?

[@burgzaza]

@@RechtmanDon Possibly, but then again, the process of the radiation is so slow that even if it was super old, it's mass wouldn't have changed that much (I might be wrong on that).

[@RechtmanDon]

@@burgzaza Quite true, but some are apparently revisiting the actual age of the post-bang era.

[@GreenFacePowerRanger]

TZO's !! very interesting !😃😃😃

[@KippinCollars]

It's aliens. It's always aliens.

[@Richard_deVries]

Another, less likely but still possible solution to a star or star like object emitting no light whilst not being a black hole. It is covered by a shell of material blocking all light. Natural or not.

[@bjornfeuerbacher5514]

Such a shell would absorb radiation, increase its temperature and then radiate infrared light. So no, doesn't work.

[@TheMrgoodtool]

Anton, could you please tell us what force or mechanics are involved in black holes emitting radiation at their poles. Centrifugal force? or too much matter being taken in at once? I know a lot about hawking radiation, but these blasts from the black hole poles is different. Please explain, if you can.

[@bjornfeuerbacher5514]

As far as I know, this process is still not completely understood. Probably it has something to do with the intense magnetic fields.

[@Dankmangolion]

Question, possibly a silly one, how do they know that an elliptical orbit so far away is truly elliptical, and that we are just not seeing it from a slight side angle so it appears elliptical?

[@Mellman-g9p]

When something doesn't make sense, it's always black holes.

[@Flesh_Wizard]

Black hole sun, won't you come🎵 And wash away the rain🎵

[@JamesQMurphy]

I miss 90’s music

[@wb3904]

@@Flesh_Wizard the text was stupid. The clip even worse... a sun collapses into a black hole so it can't be both 🤪

[@Jagzeplin]

@@wb3904 awesome song tho

[@wb3904]

@@Jagzeplin I hated it but most loved it. Stupid song is in my head now 🥲

[@HolmesHobbies]

​@@wb3904 its about herion addiction. Its not as annoying of a song knowing that.

[@antimony2986]

Fascinating!

[@DaveJLock]

Can someone explain what "cannot be unexplained" means?

[@spraitukas]

Bad English 😅

[@malavoy1]

The circular orbit seems to me to be the one thing that speaks against it being a TZO. If a neutron star merged with another star, probability being what it is, it's far more likely to make the orbit elliptical, as there are many choices of parameter that govern elliptical shapes, whereas only one set of parameters will give you a circular orbit. Then again, what they're calling a perfectly circular orbit may actually be a 'practically' circular i.e. circular in the eyes of the beholder, not the actual measurements.

[@brianwilcox2543]

The Universe is such a beautiful place!

[@dogprowilhelm7630]

Anton, I thought blackholes BHs become Quasars when consuming too much mass and there should be jets? How about a Quark Star at the cores and there would be no jets. Would there be higher muon or tauon emissions mass codependency on the quark mass and spin? Great topic❤

[@bjornfeuerbacher5514]

Quasars are only formed by supermassive black holes, not by stellar black holes. And jets only form if the black hole swallows enough material. This black hole is dormant, it swallows (almost) nothing.

[@immunitycorrupts3641]

I love Science

[@joemcintyre2090]

The distance of the black hole must be correct because it's in a gravity lock with the red giant that possibly has a neutron star inside of it consuming the red giant from the inside like a wasp larvae in a wolf spider.

[@khinmaungthein2624]

Amazing...🤔

[@stuartclough915]

How big can rocky planets get? 1 solar mass? More? With an iron core, they would be resistant to further nuclear fusion. So could theoretically slow compress to either neutron star or black hole, but doing it without light or explosions.

[@unlearningify]

Possibly a silly question, but for the educated here, don't black holes evaporate, and at increasing rates the smaller the black hole? Was this considered, or is it the circular orbit that throws this whole situation into disarray?

[@KaliFissure]

Because of the balance of masses is it possible that there was a smallest physically possible black hole, but there was another star which was in mass so much larger that the star took from the black hole? Instead of the reverse. Yes, BH is higher surface gravity, but the star could have been monstrous

[@isleofyew1]

Stop at 10.03 and enjoy his smile. He is "one" with his specialised subject and laughing at the hippies who feel they are one with the whole universe simply after feeling very high!

[@paulbennett772]

HV 2112 - It's all coming true! Neil would be delighted!

[@crispycritter7022]

Is there any black holes the size of a plum?

[@osmosisjones4912]

Why are small things like Electorons and protons and Neutrons depicted as rounde

[@Reiman33]

the simplest object in 3D space is a sphere. When conceptualizing pointlike objects, even though a sphere is literally incorrect, it corresponds to natural conceptualization of what a very tiny "point" object would be. It is a useful abstraction. This idea is where the joke about spherical cows comes from.

[@jamesnasmith984]

A neutron star might ablate a nearby red giant by accretion but how does it invade and parasitize it from within?

[@thomasgeorgecastleberry6918]

I have one of those teeny weeny black holes living in my wallet, it's been chowing down on my money! How do I get rid of it?

[@ultramovier]

Every frigging time the math tells us what is or isn't possible, observation throws us a curve ball.

[@GAMakin]

There are MUSSELS. There are CLAMS. And there are OYSTERS. Viewed from the surface, though 5-miles of Ocean water, they might be "perceived" as the same "thing". CUBE the distance (as you drift along) and they might appear to be undifferentiated grains of sand. PROXIMITY AND SCALE.

[@petewright4640]

Anton looks and sounds really tied in this video.

[@DC9V]

I just can't wrap my head around orbiting blackholes.

[@alansilverman8500]

You say it's in a circular orbit...do you know it's inclination? If it's not along the line of sight, then that 2.7 solar mass estimate is a MINIMUM value!

[@maxruedy951]

Once again the scientists say that something is impossible and the universe just says "hold my beer".

[@bjornfeuerbacher5514]

No scientist says that this is impossible! That was just Anton with his video title! Clickbait.

[@bartermens8219]

We might find rare occurances in the universe. It doesn't seem that hard image how this happened. An extra star or more than one extra star seems like the easiest start. Solitions aren't the problem. Proving them is :)

[@NancyRode-u9i]

🙋🏽‍♀️💖anton everyday

[@fearthehoneybadger]

Let's just name this one "Tiny."

[@burgzaza]

Or David for the giant star, and Goliath for the small black hole :)

[@hanswitvliet8188]

Nah: “dwarf black holes”, a revenge for the humiliation of Pluto.

[@CoryWipke]

Isn't the core of a start what supports it? I have a hard time believing a neutron star could exist in the center of another star without the star itself collapsing.

[@mrexists5400]

Could there be an object that had enough mass to become a star, but failed due to a fast spin?

[@weaponizedemoticon1131]

Sorry if I'm misunderstanding, but the title of this video is very confusing. "Cannot be Unexplained"?

[@DeadSlayer0683]

How do they know it’s there if it’s dormant?

[@bjornfeuerbacher5514]

Err, Anton explained it in the video. Watch it again.

[@jwarmstrong]

A cool black hole might indicate a very old object which ate all matter billions of years ago and is in the process of cooling down

[@Metameinitiatedbycontact]

Anton you're cool bro

[@kjnoah]

Silly to assume excessive mas must produce emissions measurable form earth.

[@PhilDrury]

Reality is full of surprises.

[@mickwilson99]

I am skeptical about the notion of a "circular orbit". All orbits in "flat" space are ellipses, with varying degrees of eccentricity. A circular orbit requires eccenctricity to be *precisely* zero - vastly improbable in any physical system. A circular orbit would require that no change in rate of angular velocity over the course of each orbit could be detectable, a very hard task unless the system is conveniently perfectly "flat" or "face on," as viewed from Earth. In fact, I'd expect the researchers to be equally intrigued how any orbit of extremely low eccentricity could occur at all.

[@johnbennett1465]

Obviously they mean circular within the accuracy of measurements.

[@Haegemon]

If there is something imposible but exists, then what we think that we know is incorrect.

[@bjornfeuerbacher5514]

As Anton explained in the video, it actually is not impossible. The title is just clickbait.

[@Haegemon]

@@bjornfeuerbacher5514 Obviously. But as he explains it was considered not possible before. There was some theories but lack of evidence. Still it's not conclusive the explanation for this phenomenon.

[@BWBDCan]

Maybe it was a original backhole from formation of universe. Its had time to lose mass in hawking radiation. Now its smaller then we believe they should be. That or its one of the micro blackhole thats growing before it expires.

[@bjornfeuerbacher5514]

A black hole with several solar masses does not lose mass by Hawking radiation, because its temperature is way below the temperature of the universe around it.