>>16470792
invisible means transparent, not black. black holes aren't transparent

Yeah, I wish people didn't say shit like this. To say you can't see black holes is like saying you can't see yourself in a mirror, because it's just a reflection of your clothes and your body... which is technically correct, but obviously not what anyone means.
When people say you can't see black holes, what they mean is that you can't see the singularity, which is true... but you DO see the "black" "hole" enveloping the singularity.
This "black" "hole" has the appearance of a black hole, but it's not the black hole. We just call it that because it's the only part of it we can perceive.

Black holes are not invisible, but since they don't reflect or radiate any light, they look completely black. Space also happens to be mostly empty blackness, hence why black holes can only be observed via the effects they have on other objects (occultation, gravitational effects, etc).

>>16470796
so is every science teacher i've ever had just a retard who doesn't know what words mean?
i guess that's why they weren't english majors but damn

>>16470805
One of the challenges of being a science teacher is having to dumb down extremely complicated shit to actual retards, because if you gave them a perfect explanation with all the nuances, they still wouldn't understand it or they'd be overwhelmed.
This is how sentences like "Black holes are invisible" are born. Better than spending 5 minutes discussing the ontology of what makes something "visible" to dumb kids who couldn't give a flying fuck anyway. Save the real shit for the ones actually interested in the field, not just getting their lib ed requirements out of the way

>>16470792
Another low quality rage bait

>>16470827
>its okay to lie because i cant be bothered to explain anyways
This is why you will burn in hell.

>>16470792
>grab pen and paper
>draw circle in the middle of the paper
>cut circle out using outline you drew
This is very dumbed down but it's the same principle, You see the hole where the circle was despite not being able to see anything there.

>>16470827
Then sometimes you'll get a professor who is hyper autistic about calling the event horizon the "point of no return"
>IT'S NOT A "POINT" REEEEEE

>>16470796
>invisible means transparent,
Uhhhhhh
>invisible
>in·vis·i·ble
>/inˈvizəb(ə)l/
>adjective
>unable to be seen; not visible to the eye.

Protip: black holes don’t actually exist. it’s just abstract mysticism they use to keep their equations balanced

>>16474328
Man that would be very convenient and make everything a lot easier lol.

>>16474636
they don't exist. a mathematical singularity is only evidence that the math is nonfunctional and does not reflect reality.

the naming doesn't help midwits
it's not a "HOLE"

It’s not about “where” is a black hole…

…it’s about “when”

>>16474328
>. it’s just abstract mysticism they use to keep their equations balanced
Why do you retards keep saying this? Blackholes weren't "invented" to balance equations. They became theoretical because of the equations. Their existence became known because of einsteins field theory, he didn't make up their existence because something in his equations needed to be fixed.

It just took astronomy a few decades to catch up to the theories before evidence of blackholes became discovered.

>>16470792
I prefer to call them counterspatial sinks, myself

>>16470792
what even is this red/yellow stuff? can you just see through the hole of the black hole?

>>16481826
The accretion disc

>>16481826
Tl;Dr gas and dust falls in, and upon being compressed, heats up.
That's what we're seeing here.
That shit heats up and gives off light.

>>16474285
You can see the dark spot

>>16476325
It's just retards wanting to feel smart and be on then "inside" of secret knowledge that no one else understands. It's the same sort of people who populate the antivax, flat earth, etc. echo chambers. They arent actually smart, or are at least just extremely impressionable and gullible. The actual smart ones in these groups are the grifters making money off these people.

There really isn't much you can do except consistently call them out on their retardation.

>>16476325
>hurrdurr my equations only make sense BECAUSE they divide by zero
Nice try kikestein.

>>16470796
invisible means not visible

>>16491581
You can see around the dark spot, but there is nothing within to be seen.

>>16470796
nigger

>>16475564
That doesn't imply black holes cannot exist, it just means they would lack a physical singularity at their center. From the outside this could still have an event horizon and be indistinguishable from a Schwarzschild/Kerr singularity for external observers.
But to figure that out, you will need to solve quantum gravity. Thanks for this great discovery, you've now caught up to the physics of the 1960s.

>>16501354
well said

There is not nearly a telescope powerful enough to resolve a black hole that well. What you are seeing is a theoretical blackhole that is consistent with the telescope data. But its not unique. Other groups came up with different images.

Regardless of whether or not there is a genuine gravitational singularity present in the center of a black hole (there probably isn’t), you still have a region of spacetime with extremely dramatic curvature around and especially beyond the event horizon. So, even without a true singularity, black holes are still incredibly freaky and cool.

>>16471081
It's a point on the worldline of any object that passes it.

>>16496004
By that logic you can't see any black object.

>>16474328
Schwarzschild invented the black hole meme as a way of mocking the stupidity of GR, but the media instead used his idea to sensationalize Einstein's ridiculous theory. People who can't do math and don't understand physics, which is like 99.999% of people, can't tell the difference, they just go by what the media says.

>>16505526
And we just have to sit and listen while they talk about “detecting gravitational waves” or “taking a picture of a black hole” like we’re stupid enough to believe this things arepossible. Physics became mumbo jumbo a long time ago and never recovered.

>>16470792
>The shadow is visible
>This means a shadow is a real thing independent of itself, by itself.

Crawl out of the cave.

>>16505536
Yes, they want to divide by zero. Yes, their mathematics is a sham.

>>16505564
It’s a big magnet? Not a black hole?
>>16505572
You can’t divide by zero! That’s impossible :)

>>16470792
isn’t that image completely fabricated?

>>16503167
>There is not nearly a telescope powerful enough to resolve a black hole that well.
That's why it was done with very long baseline interferometry, using many telescopes across the world simultaneously as a synthetic aperture.
>What you are seeing is a theoretical blackhole that is consistent with the telescope data.
Not true. The algorithms are reconstricing the image, it's not from a simulation.
>But its not unique. Other groups came up with different images.
Wrong. 4 other groups came up with the same ring, only one did not. The original team also used 3 different algorithms.

>>16505597
yes
ppl think its real because there was a sci-fi that looked like it

>>16503167
99.99999% of sci posters never studied optics so they don't understand what the capabilities of telescopes are, they can't run the numbers and check for themselves, they don't know how.
as a result, they'll believe any "AI" slop that nasa or anyone else published, that why they all fell for the sausage pic, thats what the chad who posted the sausage pic was pointing out

>>16488631
Light can't escape black hole you midwit troon

>>16505656
>The algorithms are reconstricing the image, it's not from a simulation.
How do the algos know what to reconstruct?

>>16508377
It looks like kalbasa

>>16508460
https://en.wikipedia.org/wiki/CLEAN_(algorithm)
https://www.cv.nrao.edu/~abridle/deconvol/node7.html
https://www.cv.nrao.edu/adass/adassVI/shepherdm.html

>>16470792
>black holes are invisible because they are so powerful, light cannot escape from them
ifls retards actually believe this, but its not true, the light just gets redshifted same as with cosmological redshift

>you can't see black holes
You literally can't. Seeing something is definitionally processing neurological signals from detected photons reflected or emitted by the object. The only radiation black holes reflect or emit is hawking radiation. Hawking radiation cannot be detected by the human eye.

Ipso facto you cannot see a black hole.

>>16509636
That’s right. This is why it’s very helpful when a black hole has a nice accretion disk, because they are otherwise quite difficult to spot.

>>16509636
>you cannot see a black hole.
because they don't exist

>>16470792
Just look at an arago spot, it's fundamentally the same thing!

>>16510320
Same reason you can't see unicorns, they're both fictional objects from fantasy literature

>>16508394
The in-falling matter is outside of the event horizon.

>>16470792
If an invisible man were covered in paint, you could say he's technically still "invisible".

>>16511699
theres no such thing as an invisible man same as theres no such thing as black holes. you need to learn to differentiate your sci-fi fantasy life from reality

>>16513143
You need to understand the concept of "hypotheticals".

>>16508490
this is what it looks like

>>16470805
>so is every science teacher i've ever had just a retard who doesn't know what words mean?
I mean, yeah. STEMtards can't into semantics. Like it or not, linguistic nuance is a Humanities thing.

>>16476067
A 3d hole is still a hole

>>16514286
lol

Black holes are not the things that all the scientists agree they are, but rather they are some other secret thing

>>16516651
they don't exist, thats the big secret

If light doesn't escape black holes then how do they harvest the black light from them?

>>16517653
So there’s just nothing there? The stars near the center of the Milky Way Galaxy are orbiting erratically around nothing? That’s remarkable. Our universe is so amazing.

>>16517846
>The stars near the center of the Milky Way Galaxy are orbiting erratically around nothing?
the center of mass, you have clearly never even learned basic newtonian physics, thats why you're so confused here.
or do you think there has to be a black hole bewteen the earth and the moon since they've got to be orbiting around something?
why don't you just stop thinking about physics, you're only confusing yourself and inventing stupid ideas in your ignorant head. or if you're that interested in it, why aren't you willing to put in the effort to even learn freshman level physics?

>>16518605
>there has to be a black hole bewteen the earth and the moon since they've got to be orbiting around something
Gibes me $88 trillion to study dat
t. NASA

I changed my mind on black holes I think they’re real now

>>16521281
why

>>16521422
if you want to post about politics go to >>>/pol/

>>16508394
There is no physical evidence for this claim, purely hypothetical

>>16521402
Overwhelming academic consensus and the lack of a plausible alternative explanation for the observations.

>>16521427
thats not Sagittarius A
its Sagittarius A*

>>16470792
This is the accretion disk.
I do hate how NASA shares so many “artist’s renditions” and computer generated images without denoting them as such.
I understand why they can’t take real photographs and that they’re using data to piece together a picture, but it’s insulting that they don’t tell people that’s what they’re doing.

>>16503315
https://youtu.be/fg2x0L4YAuU

>>16505597
royal astronomical society suggest the image was just some artifact lol

>>16521691
Nope. Learn what a journal is. And the claim that it is flawed has not been independently reproduced, but the original results have.

>>16521553
The heat map generated by the critique implies that the black hole is shiny.

>>16521553
>This is the accretion disk.
Really? No shit? It still shows that there is a blackhole.
> that they’re using data to piece together a picture,
Would you be happier if our eyes saw in infrared or could see radio waves? We can make sensors for any of these things that can eventually be made as cybernetics for the human brain to process more than just visible light. It's just a matter time.
>>16521425
blackholes aren't politics my MAGA brother.

>>16521534
>Overwhelming academic consensus
Well if the same people who say men can get pregnant say black holes are real, that's good enough for me.

>>16470792
accretion disk.actually is blue
it was colored in orange for the stupid goys

>>16522010
lol

>>16509457
IT's true, the surface one sees in free fall toward the hole is the extremely red shifted light of the star that collapsed long ago, and all other shit that fell on it. It would always stay ahead of you as you free fell onto it (apparent horizon), in the idealized schwarzschild droste no spin/charge case anyway. But the absolute/event horizon is not observer dependent, and it does get crossed (or rather a approximation to where it is gets crossed) and is not the red shifted star. I-I think anyway.

>>16471081
"nothing special happens"
because "lemme talk about the fake singularity at r=2m"
Nothing special happens


Also in a non spinning blak whole, ignoring tidal force shredding you up, getting close to the singularity (after passing the even horizon), would apparently be a bit like landing on a pitch dark planet with half the hemisphere taken up. You never see the spacelike singularity. But timelike ones can in theory see you.

>>16470805
No, you are the retard. This shouldn't be hard for you to logic out. Giving retards smartphones was the dumbest mistake we ever made as a society.

>>16505536
>Physics became mumbo jumbo a long time ago and never recovered.
https://en.wikipedia.org/wiki/Jüdische_Physik

>>16470792
>picture
it's AI creation based on some data measurements. And it would be nothing wrong with it, if the AI didn't have the general idea programmed in, how it's supposed to look like

The crazy thing is that time gets all fucked up around the black holes

>>16525026
You have absolutely no fucking idea what you're talking about.
>>16526959
are you 12? Just watched interstellar for the first time?

Someone post the gif of stellar movements at the center of the galaxy with the sudden sharp turn

>>16526974
>omg things orbit their common center of gravity!!!
>that means black holes are real
lol so i guess their must be a black hole between the earth and the moon too and another at the center of our solar system. otherwise what is the sun orbiting? it can't just orbit nothing, must be a black hole right?

>>16527034
Because instant sharp turns of a massive object like a star are totally the same thing.
Why are retards so disingenuous

>>16527094
>sharp turns
you're really going out of your way to telegraph the fact that you've never studied physics and can't do basic math. there are hundreds of comets in our own solar system that have highly elongated elliptical orbits and make 'sharp turns'

>>16526970
No I saw that movie back when it came out in theatres I think 10 years ago. It’s pretty good. Great music and visual effects.

>>16526970
You have absolutely no arguments

>>16521664
That black spot is very visible. It just lacks contours.

>>16474285
If you can see through something without obstruction, it is definitionally invisible.

That's what separates transparent from translucent and opaque.

Likewise if something is not transparent it can't be invisible.

Transparency is necessary and sufficient for invisibility. Black holes are neither. They are opaque and visible.

>>16481829
>>16488631
That is a common misconception. When the M87 and CygnusA* pictures came out, most people thought they depicted the accretion disks of those black holes, but that is wrong.

First, one needs to realize those aren't photographic pictures, those are infrared imagery obtained via radiotelescopes, which were then recolored in the visible spectrum so they could make sense to human eyes.
However, the accretion disks wouldn't be visible in those wavelengths.

What we see in those pictures is the innner photon ring, light from all types of wavelengths (including infrared) coming from all directions and being focused around the black hole slightly further than the event horizon, where it can still escape and reach us.

>>16529798
>However, the accretion disks wouldn't be visible in those wavelengths.
Not true. They are observing at 230 GHz, or 1.3 millimeters wavelength. It's high frequency radio, where AGN and other sources with accretion disks are bright. This is dominated by synchrotron radiation.

>>16470792
The shit they suck in would be visible retard

>>16529798
Its a fake picture even the authors of it have now admitted that its fake

>>16527419
My arguments were sucked into a black hole

>>16532843
Your face was sucked into a black hole

>>16533372
can u kiss urself on the lips in a black hole using gravitational lensing or does that only apply to mirrors?

>>16533372
gottem

>>16531430
>even the authors of it have now admitted that its fake
not before the damage was done. they got massive, massive publicity on the original fake image because it was a means of promoting feminism and the same press had pretty much zero coverage when they retracted it.

>>16531430
>>16536879
it's not so much that it's fake
it's just that their rendition of the data collected is idiotic and doesn't give you any insight on what it might actually look like
even the colors are wrong

>>16531430
>>16536879
>even the authors of it have now admitted that its fake
Nope. Never happened.

>>16536947
>even the colors are wrong
Lel, not this again. You're literally just admitting you are too dumb to even understand a colormap. The colors map between the image and the brightness temperature scale.

spoiler: this is what a black hole actually looks like

>>16470792
Why are you so angry

>>16491605
>It's the same sort of people who populate the antivax
Turns out believing in black holes literally correlates with being vaccinated. Now THAT is a redpill.

>>16527034
You should read up on what a "barycenter" is.

>>16538754
thats whats at the center of the galaxy, not a black hole

Would this be possible? Could you have a planet in a range that would get enough light to support life but not be completely baked by the other wavelengths of radiation from the disk?

>>16541043
Accretion disks aren't permanent. Once the surrounding matter has fallen into the blackhole or been ejected it would be completely dark.

>>16508517
>schizobabble
Too long
Didnt read

>>16470792
The accretion disk is not doe

>>16534755
If BSM could do math he would be studying that topic

what is it about black holes that makes them the number one most popular popsci topic of discussion amongst the brainlet soience fangoys?
is it the comic bookish aspects of the spectacular, unrealistic and completely non disprovable conjectures which go along with the topic that make black holes so popular amongst the scientist posers and wannabes?

>>16547866
Because they’re still one of the few mysteries left in a materialist worldview.

>>16524884
Wow what a pointless waste of everyone's time.

>>16547921
There's really a lot of mysteries left in the materialist worldview. We don't understand half as much as they like to make you believe on discovery channel.
1) Movements of galaxies are not congruent with the observed amounts of mass. We invent dark matter to fix the equation.
2) We have no idea how quantum physics really works. "Shut up and calculate."
3) The beginning of the universe is a mystery, as is whatever is "beyond the edge" of the universe, which would be expanding at the speed of light.

On the topic of physics. If you go into history, you have the Egyptian civilization having access to items inaccessible to a bronze age civilization. People just handwave it and say well they were really skilled craftsmen. Lol.

>>16470792
Whether you can see them or not, I liked Disney's rendition of what one would look like.

>>16474285
visible doesn't mean photon detection. lack of photons is also visible. your vision detects that. our brains shows black.
if you'd have a sort of vantablack painted plate outside in the sun, assume 100% absorbtion, the plate would be very much visible. it would be dark as fuck, but visible, you'd make it out as a dark thing, it's visible.
it not being visible means you aren't able to detect it. no clue where it is, you don't detect it in any way.

>>16548212
>its a big whirlpool!!!
>just like muh toilet!!!
amazing someone in the movies business would make that leap of reasoning
https://theendofziondotcom1.wordpress.com/the-fecal-fixation-of-the-chosen-ones/

>>16553433
the n word is racist

>>16470792
black holes don't even exist, they're a made up sci-fi meme

>>16503212
>Regardless of whether or not there is a genuine gravitational singularity present in the center of a black hole (there probably isn’t),
Probably? Probably not? We can't say because the physics at the event horizon breaks down like a discontinuous function. We can't speak with any authority as to the mass distribution within the event horizon.

>>16527435
>If you can see through something without obstruction, it is definitionally invisible.
(transparency => invisibility) <=/=> (invisibility => transparency)

>Transparency is necessary and sufficient for invisibility
Bacteria are invisible to unaided humans but not transparent

>>16559874
>Bacteria are invisible to unaided humans but not transparent
No, they aren't. As evidenced by microbial mats.

>>16481829
Why is it a disc, and not a sphere?

>>16559935
Because they cancel out to the average
Its just a pattern of nature
https://www.youtube.com/watch?v=5R3ufj28lzM&t=268

Any of you fags do black bag shit with optical black hole analogues? Everyone mentions the general scientific community when talking about muh holes, but no one mentions the DoD. And yes, the DoD is indeed very, very interested in optical singularity analogues like BE/Fermionic condensates for (((reasons)))

>>16559462
>like a discontinuous function
Whats going on there is the retards who wrote those functions are too incompetent mathematically to construct their ideas in the form of a functional equations and that in turn proves that those equations do not correspond to reality.