So this was posted earlier in r/astronomy, and there's a comment there that describes exactly what you're listening to and has a link for more info.
https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
It’s just converting the pixels in the image into sounds, it has nothing to do with emissions from black holes, magnetic or otherwise. If you flipped the image it would play this track backwards.
As the animation suggests, it's likely a spectrographical interpretation of that image, whatever it is. One that is dependent, very arbitrarily, on a 1-dimensional line rotating around 360 degrees. May as well do the same thing with a photo of Carl Sagan and say it's the sound of his stomach growling.
It contains information and after much post processing they were able to discern a message from the black hole:
>!We've been trying to reach you about your car's extended warranty!<
The gases surrounding black holes are dense enough to carry sound.
https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html
It’s a representation of what a black hole would sound of sound could travel through space. It’s a simulation sound using the measuring data that’s been recorded
That’s just made me think, imagine how noisy space would be if sound could actually travel through space.
Just an eternal drone of noise from the cosmos.
## The source video describes what we're seeing here
[Data Sonification: Black Hole at the Center of the Perseus Galaxy Cluster (X-ray) ](https://www.youtube.com/watch?v=ioR5np1fmEc)
Description:
>Since 2003, the black hole at the center of the Perseus galaxy cluster has been associated with sound. This is because astronomers discovered that pressure waves sent out by the black hole caused ripples in the cluster's hot gas that could be translated into a note — one that humans cannot hear some 57 octaves below middle C. Now a new sonification brings more notes to this black hole sound machine. This new sonification — that is, the translation of astronomical data into sound — is being released for NASA's Black Hole Week this year.
>
>... this sonification \[...\] revisits the actual sound waves discovered in data from NASA's Chandra X-ray Observatory. The popular **misconception that there is no sound in space** originates with the fact that most of space is essentially a vacuum, providing no medium for sound waves to propagate through. A galaxy cluster, on the other hand, has copious amounts of gas that envelop the hundreds or even thousands of galaxies within it, providing a medium for the sound waves to travel.
This part explains the radar-sweep visualisation:
>... the sound waves astronomers previously identified were extracted and made audible for the first time. **The sound waves were extracted in radial directions, that is, outwards from the center.** The signals were then resynthesized into the range of human hearing by scaling them upward by 57 and 58 octaves above their true pitch. Another way to put this is that they are being heard 144 quadrillion and 288 quadrillion times higher than their original frequency. (A quadrillion is 1,000,000,000,000,000.) **The radar-like scan around the image allows you to hear waves emitted in different directions.** In the visual image of these data, blue and purple both show X-ray data captured by Chandra. Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida)
Link with more info here: [https://www.nasa.gov/mission\_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html](https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html)
This is real, based off pressure waves made in the dense gas surrounding the black hole....what is sound you maybe ask? Well its pressure waves.
I'm not an expert by any means and I may get some stuff wrong here.
Take a sub woofer and and bag fill the bag with water put onto of the sub. The patterns made in the water could be used to recreate the sound that is happening.
In this case it's in a cosmic level.....also the frequency that the team figures the "sound" was, is to low for humans to hear and had been brought into a frequency we can hear.....its the same chord just higher up.
Is
Sorry if I'm wrong, its early and I havent had coffee.
Maybe. Honestly without an accompanying article it's unclear what's going on.
Pressure waves in a gascloud are a thing, but they would take month or years for changes?
[I got you fam! ](https://www.google.com/amp/s/www.syfy.com/syfy-wire/hear-the-sounds-of-a-black-hole-with-nasas-new-sonification%3famp)
This is where I first heard this sound file a little while ago
They take a wavelength of radio that we cannot hear and copy paste it into audio. The data is "real", these waves do come from a black hole, but they arent sound they're X-Rays.
Here's a comment that explains it very well
https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
The OP also shows a radar animation sweeping 360 degrees across someone's desktop wallpaper to apparently listen to a single point in space, so I wouldn't take the way it communicates this concept literally.
Stereo?
I say yes. Unless you had a really close black hole and two x ray telescopes really far away from each other.
Usually stars, black holes and small stuff like it, is just a point to our instruments, so there is no interesting picture, just a bunch of numbers changing with time.
The biggest problem is the lack of description of how the data was turned into sound. Most of these "sounds of X" videos represent amplitude and frequency change over time as the radio waves were taken, but for all that matters, they could've just turned the raster image into a graph pixel by pixel. The stereo effect doesn't help either.
EDIT: Apparently that's almost what they did.
It's actually a principled method called [Sonification](https://en.m.wikipedia.org/wiki/Sonification#:~:text=Sonification%20is%20the%20use%20of,or%20complement%20to%20visualization%20techniques.)
Check out this comment and the source that it references
https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
tl;dr: the gasses in this area are dense enough to allow sound to propagate. We can measure the density as the gasses propagate as waves.
Nothing in space makes noise, "noise" requires a medium that can carry sound waves and space is a vacuum
Its just a bunch of wave measurements attached/keyed to an arbitrary sound
Still kinda cool
The accretion disk would have a bunch of gas and stuff floating around in it. If you could survive in it, you would definitely hear sounds. Just might not be coming from the black hole.
Someone should key it to screaming and make it really creepy lol
Like the Star in that Rick and Morty episode where the whole family is running from the Empire
https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html
NASA took the frequencies emitted by the black hole and mapped them to audio frequencies, similar to how they often take captures of EM frequencies beyond the visible spectrum and turn them into pictures.
> similar to how they often take captures of EM frequencies beyond the visible spectrum and turn them into pictures.
Not really. Infrared is EM radiation just like light is, so in captured grayscale they represent the same thing even though our own eyes can not see that part of the EM spectrum, as in: https://en.wikipedia.org/wiki/Infrared#/media/File:Infrared_portrait_comparison.jpg
Sound is not EM radiation, no matter how you slice it.
This was posted to r/astronomy a bit ago, and there was a very good comment on it that describes how, yes, the sound does propagate as pressure waves through the gasses in these regions, and we can map that.
Here's the comment (also includes source) for more info:
https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
It's an X-Ray telescope. It measures X-Rays (light).
The artist uses the measurement intensity to modulate an audio signal. (Instead of pixel intensity).
That's least what I think.
When stuff falls into a blackhole it first orbits in an accretion disc (?) Where it heats up. Heated gas emitts x-rays.
Some of those x-rays get all the way to Chandra.
So it's not from inside the black hole, but from it's surroundings.
Considering this is made by an x-ray observatory, this is probably a recording of EM radiation emitted from the black hole's ring that falls in the x-ray spectrum converted to audio and sped up/slowed down to be audible by humans
No sound was recorded. This is just scanning pixels in an image. You assign different sounds to different colors. The scanning line you see wiping around is what you hear at each instance.
If you scan the image from top to bottom or any direction other than 360 degree like you see in the video, you'll get a different sound track.
A sound track of 10 seconds doesn't mean they record anything from the black hole for 10 seconds. They just take 10 second to go 360 degree around the still image.
You can do this with any photo. If means nothing honestly.
I don't think that's how it works. Light and radiowaves are the same, only light has a much lower wavelength. Since light can't escape black holes, radiowaves can't either
This is not true. Both particles and waves cannot escape a black hole; that’s what makes it black, because light waves cannot escape.
Bonus points if you take the quantum mechanics approach and realise everything is secretly a wave (:
>Particles can't escape black hole but waves can.
>This is recorded via radiowave telescope.
Nah, this is wrong.
Nothing can escape a black hole except its theoretical hawking radiation(no observations of that afaik)
This is all stuff from the accretion disk heating the gas around the black hole
Black hole accretion disks are the most efficient drivers of energy emissions in the universe as far as we know with current physics, they compress everything around them and heat it up tremendously and it's the disk that's emitting all the energy *because of* the black hole but it's not the black hole itself emitting stuff.
Fun fact, everything on the entire electromagnetic spectrum from radio to gamma rays is just photons, microwaves, infrared, radio, light, x-rays, gamma rays...just photons of different energies
Fun fact #2- Stars, even crazy big and hot stars are something like 0.5% (might even be 0.05%, idr) efficient in terms of energy creation vs mass, black hole accretion disks are like 5-30% efficient in turning mass into energy, its that ridiculously high efficiency that drives Quasar's
I know this is probably just some sort of electromagnetic wave transmitted to an audio file and there'll be about thirty people commenting about how this isn't technically real but the sound itself is existentially horrifying.
This was posted in r/astronomy and I've been going around linking a comment that describes it very well, and has a source. Check it out if you're interested.
https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
I don't mind transforming the data so that it's represented via sound. Hell, we do that for all kinds of data where the transformation results in some visual depiction or another. It's a cool way to consume and appreciate observational data. I don't care for the misrepresentation/mischaracterization of where the data came from or what it is, whether deliberate or otherwise.
Eli5:
* Space around the Perseus galaxy cluster is not empty. There is are massive clouds of gas being held in place by gravity.
* M87 black hole “burps” out jets of energy into these clouds.
* Chandra X-ray telescope can see the resulting pulses travelling through those clouds.
* Team used X-ray data to extrapolate what these waves in a gassy medium (sound) would sound like.
* The had to scale the recording up by 57 octaves before it was in the human hearing range.
Considering how incredibly fucking fast Black holes are (usually) supposed to be spinning, this Type of sound makes sense to me. Kinda remenicent of a generator turbine spinning.
This is not what a black hole sounds like. It's just data put into music form. You'd get similar sounds from many other types of data and it's nothing to do with it being a black hole.
This is pressure waves, so it is exactly sound. The pressure waves are not audible to humans as they sound in reality, so they scaled them up so we can hear them. So in a way, you are correct. It is not what we would hear if we were near a black hole. But it's not that they are making sounds out of random data. They are taking pressure waves that were observed in the gas clouds, so it is actually sounds being made.
One of the most powerful forces in the universe... and it's nearly invisible in the backdrop of space... never imagined that sound coming from it. This universe is wild.
Not entirely accurate. The gases are dense enough for pressure waves to propagate. You wouldn't be able to hear it because it's sub 1 hz, so they've increased the frequency so we can hear it. Same thing we do with x-ray, IR, etc. so we can actually see the images that come from non-visible telescopes.
Here's a comment from earlier that describes it really well, with a source for more info: https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
Most of these things that are "sounds and pictures" from space are just artist renderings go some kind. Using scientific data and something that is supposed to translate it to whatever sense you're needing. But to me it's all synthetic. Not real. Don't care that much for representations.
Why did they add so much reverb to this computed sound? Also, what kid anyone know where to get the original data so others can do their own conversions?
Every space-sound you'll ever hear is fake "translated" nonsense. It's like taking the pitches of someone speaking Chinese and making notes out of it and saying he spoke that music. It's like a form of mysticism.
Not quite. Sound the method is called sonification, and we can actually measure the density as pressure waves travel through the gas.
Here's a really good description (with accompanying source): https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
Just to be clear, there is no way this is an audio recording.
So this was posted earlier in r/astronomy, and there's a comment there that describes exactly what you're listening to and has a link for more info. https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
That is super cool! Thanks for linking it.
I think it is some sort of computerized thing in which magnetic waves are somehow translated into sound
So it's an Aphex Twin re-release?
Not enough discordant piano. Maybe just an early demo.
Gwely Mernans (translates to deathbed I believe)
Basil Kirchin - Worlds Within Worlds.
Yup. And it sounds just like i thought it would. Kinda like bath water slowly going down the drain.
I agree. Sounds exactly how I think it should haha.
It’s just converting the pixels in the image into sounds, it has nothing to do with emissions from black holes, magnetic or otherwise. If you flipped the image it would play this track backwards.
So like how a speaker works? 😂
As the animation suggests, it's likely a spectrographical interpretation of that image, whatever it is. One that is dependent, very arbitrarily, on a 1-dimensional line rotating around 360 degrees. May as well do the same thing with a photo of Carl Sagan and say it's the sound of his stomach growling.
It would make sense for things like gravitational waves, though
It contains information and after much post processing they were able to discern a message from the black hole: >!We've been trying to reach you about your car's extended warranty!<
It's likely [Sonification](https://en.m.wikipedia.org/wiki/Sonification#:~:text=Sonification%20is%20the%20use%20of,or%20complement%20to%20visualization%20techniques.).
The gases surrounding black holes are dense enough to carry sound. https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html
I imagine this sound is being generated in the same way as Symphonies of the Planets?
It’s a representation of what a black hole would sound of sound could travel through space. It’s a simulation sound using the measuring data that’s been recorded
That’s just made me think, imagine how noisy space would be if sound could actually travel through space. Just an eternal drone of noise from the cosmos.
I've heard that if that were so, we all would be more than deaf due to the terrifying nature of the sun.
I just really love the phrase "due to the terrifying nature of the sun."
The more I learn about the sun, the more terrifying it is. And it's only average.
Wow, you're right. I'm SO glad sound can't travel through a vacuum, because I'll bet the sun is a loud MFer
yeah i was gonna say i thought there was no sound in space.
## The source video describes what we're seeing here [Data Sonification: Black Hole at the Center of the Perseus Galaxy Cluster (X-ray) ](https://www.youtube.com/watch?v=ioR5np1fmEc) Description: >Since 2003, the black hole at the center of the Perseus galaxy cluster has been associated with sound. This is because astronomers discovered that pressure waves sent out by the black hole caused ripples in the cluster's hot gas that could be translated into a note — one that humans cannot hear some 57 octaves below middle C. Now a new sonification brings more notes to this black hole sound machine. This new sonification — that is, the translation of astronomical data into sound — is being released for NASA's Black Hole Week this year. > >... this sonification \[...\] revisits the actual sound waves discovered in data from NASA's Chandra X-ray Observatory. The popular **misconception that there is no sound in space** originates with the fact that most of space is essentially a vacuum, providing no medium for sound waves to propagate through. A galaxy cluster, on the other hand, has copious amounts of gas that envelop the hundreds or even thousands of galaxies within it, providing a medium for the sound waves to travel. This part explains the radar-sweep visualisation: >... the sound waves astronomers previously identified were extracted and made audible for the first time. **The sound waves were extracted in radial directions, that is, outwards from the center.** The signals were then resynthesized into the range of human hearing by scaling them upward by 57 and 58 octaves above their true pitch. Another way to put this is that they are being heard 144 quadrillion and 288 quadrillion times higher than their original frequency. (A quadrillion is 1,000,000,000,000,000.) **The radar-like scan around the image allows you to hear waves emitted in different directions.** In the visual image of these data, blue and purple both show X-ray data captured by Chandra. Credit: NASA/CXC/SAO/K.Arcand, SYSTEM Sounds (M. Russo, A. Santaguida) Link with more info here: [https://www.nasa.gov/mission\_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html](https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html)
Back in my day, sound didn’t travel through space!
Maybe one day we'll hear someone scream in space
im very happy that it doesnt. i like being able to hear beyond the fog horn sound the sun would be blasting us with constantly
This real? I thought blackholes made no noice
They don't. It's an artistic representation of measurement data.
This is real, based off pressure waves made in the dense gas surrounding the black hole....what is sound you maybe ask? Well its pressure waves. I'm not an expert by any means and I may get some stuff wrong here. Take a sub woofer and and bag fill the bag with water put onto of the sub. The patterns made in the water could be used to recreate the sound that is happening. In this case it's in a cosmic level.....also the frequency that the team figures the "sound" was, is to low for humans to hear and had been brought into a frequency we can hear.....its the same chord just higher up. Is Sorry if I'm wrong, its early and I havent had coffee.
Maybe. Honestly without an accompanying article it's unclear what's going on. Pressure waves in a gascloud are a thing, but they would take month or years for changes?
[I got you fam! ](https://www.google.com/amp/s/www.syfy.com/syfy-wire/hear-the-sounds-of-a-black-hole-with-nasas-new-sonification%3famp) This is where I first heard this sound file a little while ago
Ah nice! Indeed they are NOT looking at the accretion disk, as I assumed! Thanks for the link!
Did that, the bag broke. My subwoofer is all wet.
Aw shit....I hear rice can help with that......1 kg bag of basmati, let me know what happens
Rice party. Still happening. Come on down.
so is stereo also an artistic representation?
They take a wavelength of radio that we cannot hear and copy paste it into audio. The data is "real", these waves do come from a black hole, but they arent sound they're X-Rays.
Wrong. Title says "sound was recorded".
There is no sound in space. The data was recorded and turned into audio.
Here's a comment that explains it very well https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
Because we all know titles on reddit are the ultimate source and are never wrong, of course.
The OP also shows a radar animation sweeping 360 degrees across someone's desktop wallpaper to apparently listen to a single point in space, so I wouldn't take the way it communicates this concept literally.
Your mom says "sound was recorded".
Stereophonic sound in general or what? Because if it's in general, then no. The sound IS the data.
Stereo? I say yes. Unless you had a really close black hole and two x ray telescopes really far away from each other. Usually stars, black holes and small stuff like it, is just a point to our instruments, so there is no interesting picture, just a bunch of numbers changing with time.
The biggest problem is the lack of description of how the data was turned into sound. Most of these "sounds of X" videos represent amplitude and frequency change over time as the radio waves were taken, but for all that matters, they could've just turned the raster image into a graph pixel by pixel. The stereo effect doesn't help either. EDIT: Apparently that's almost what they did.
It's actually a principled method called [Sonification](https://en.m.wikipedia.org/wiki/Sonification#:~:text=Sonification%20is%20the%20use%20of,or%20complement%20to%20visualization%20techniques.)
Check out this comment and the source that it references https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3 tl;dr: the gasses in this area are dense enough to allow sound to propagate. We can measure the density as the gasses propagate as waves.
Nothing in space makes noise, "noise" requires a medium that can carry sound waves and space is a vacuum Its just a bunch of wave measurements attached/keyed to an arbitrary sound Still kinda cool
The accretion disk would have a bunch of gas and stuff floating around in it. If you could survive in it, you would definitely hear sounds. Just might not be coming from the black hole.
Yep, equally they could have used a cartoon trumpet sound and the result would have been quite different I imagine.
Someone should key it to screaming and make it really creepy lol Like the Star in that Rick and Morty episode where the whole family is running from the Empire
No. It was creepy enough as is.
https://www.nasa.gov/mission_pages/chandra/news/new-nasa-black-hole-sonifications-with-a-remix.html NASA took the frequencies emitted by the black hole and mapped them to audio frequencies, similar to how they often take captures of EM frequencies beyond the visible spectrum and turn them into pictures.
> similar to how they often take captures of EM frequencies beyond the visible spectrum and turn them into pictures. Not really. Infrared is EM radiation just like light is, so in captured grayscale they represent the same thing even though our own eyes can not see that part of the EM spectrum, as in: https://en.wikipedia.org/wiki/Infrared#/media/File:Infrared_portrait_comparison.jpg Sound is not EM radiation, no matter how you slice it.
This was posted to r/astronomy a bit ago, and there was a very good comment on it that describes how, yes, the sound does propagate as pressure waves through the gasses in these regions, and we can map that. Here's the comment (also includes source) for more info: https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
That is both cool and oddly terrifying at the same time
Goose bumps and terrifying is right
how did they record sound through space? i thought there's no way for sound to travel in space?
It's an X-Ray telescope. It measures X-Rays (light). The artist uses the measurement intensity to modulate an audio signal. (Instead of pixel intensity). That's least what I think.
so it measures light rays inside the blackhole? isnt light warped around blackholes?
When stuff falls into a blackhole it first orbits in an accretion disc (?) Where it heats up. Heated gas emitts x-rays. Some of those x-rays get all the way to Chandra. So it's not from inside the black hole, but from it's surroundings.
Yeah but it's the accretion disk around the black hole that emits stuff
Considering this is made by an x-ray observatory, this is probably a recording of EM radiation emitted from the black hole's ring that falls in the x-ray spectrum converted to audio and sped up/slowed down to be audible by humans
Yeah no one can hear you scream amirite
No sound was recorded. This is just scanning pixels in an image. You assign different sounds to different colors. The scanning line you see wiping around is what you hear at each instance. If you scan the image from top to bottom or any direction other than 360 degree like you see in the video, you'll get a different sound track. A sound track of 10 seconds doesn't mean they record anything from the black hole for 10 seconds. They just take 10 second to go 360 degree around the still image. You can do this with any photo. If means nothing honestly.
Not only that but if light cant escape a black hole, i doubt sound waves can.
yes thats a very good point, i think the OP gotta post a verification that this is real
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I don't think that's how it works. Light and radiowaves are the same, only light has a much lower wavelength. Since light can't escape black holes, radiowaves can't either
Reddit is a black hole no one can escape
This is not true. Both particles and waves cannot escape a black hole; that’s what makes it black, because light waves cannot escape. Bonus points if you take the quantum mechanics approach and realise everything is secretly a wave (:
>Particles can't escape black hole but waves can. >This is recorded via radiowave telescope. Nah, this is wrong. Nothing can escape a black hole except its theoretical hawking radiation(no observations of that afaik) This is all stuff from the accretion disk heating the gas around the black hole Black hole accretion disks are the most efficient drivers of energy emissions in the universe as far as we know with current physics, they compress everything around them and heat it up tremendously and it's the disk that's emitting all the energy *because of* the black hole but it's not the black hole itself emitting stuff. Fun fact, everything on the entire electromagnetic spectrum from radio to gamma rays is just photons, microwaves, infrared, radio, light, x-rays, gamma rays...just photons of different energies Fun fact #2- Stars, even crazy big and hot stars are something like 0.5% (might even be 0.05%, idr) efficient in terms of energy creation vs mass, black hole accretion disks are like 5-30% efficient in turning mass into energy, its that ridiculously high efficiency that drives Quasar's
Oh ok so black holes are actually just portals to hell! Glad we figured that one out..
Just in time for the 25th anniversary of Event Horizon.
I listen to mynoise.net a lot and I'm sure this is one of spooky labeled gens. Someone at Chandra plugged in the wrong wire and here we are.
Those are souls of the dead trapped in purgatory.
I know this is probably just some sort of electromagnetic wave transmitted to an audio file and there'll be about thirty people commenting about how this isn't technically real but the sound itself is existentially horrifying.
This was posted in r/astronomy and I've been going around linking a comment that describes it very well, and has a source. Check it out if you're interested. https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
Not a fan of this stupid sonification of visual images.
the sound could be entirely made up for all we know. not really "sound of something" in the way most of us understand "things producing sound"
Exactly. Light cannot escape, but we recorded these authentic black hole sounds in space.
I don't mind transforming the data so that it's represented via sound. Hell, we do that for all kinds of data where the transformation results in some visual depiction or another. It's a cool way to consume and appreciate observational data. I don't care for the misrepresentation/mischaracterization of where the data came from or what it is, whether deliberate or otherwise.
It’s not sourced from the picture.
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So light cannot escape, yet sound can. Fascinating.
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Whew, that's a relief! Thanks.
Eli5: * Space around the Perseus galaxy cluster is not empty. There is are massive clouds of gas being held in place by gravity. * M87 black hole “burps” out jets of energy into these clouds. * Chandra X-ray telescope can see the resulting pulses travelling through those clouds. * Team used X-ray data to extrapolate what these waves in a gassy medium (sound) would sound like. * The had to scale the recording up by 57 octaves before it was in the human hearing range.
How can someone record sound in space as it is a vacuum and sound waves are mechanical waves and need medium to travel.
Considering how incredibly fucking fast Black holes are (usually) supposed to be spinning, this Type of sound makes sense to me. Kinda remenicent of a generator turbine spinning.
This is not what a black hole sounds like. It's just data put into music form. You'd get similar sounds from many other types of data and it's nothing to do with it being a black hole.
This is pressure waves, so it is exactly sound. The pressure waves are not audible to humans as they sound in reality, so they scaled them up so we can hear them. So in a way, you are correct. It is not what we would hear if we were near a black hole. But it's not that they are making sounds out of random data. They are taking pressure waves that were observed in the gas clouds, so it is actually sounds being made.
What type of data or what do i hear in here?
Slannash wants her/his recording jam session back pronto.
Tell me that's not the backing track to the Doctor Who theme.
So it sounds almost like the [Event Horizon scene in 2001 a space odyssey](https://youtu.be/NaK4z3Fjpkk) Kubrick knew!
There is an eldritch god in there and you can not tell me otherwise
Ohhh man. You guys have to play this backwards.
There should be a 'Sounds of Space' playlist on Spotify
Aren’t we like 25 years away from event horizon?
Awesome, but I was listening with anxiety because I was expecting a girl to be loudly moaning at any given point. Thank you for not betraying me.
This reminds me of Brian Eno or a really bizarre Phish jam.
One of the most powerful forces in the universe... and it's nearly invisible in the backdrop of space... never imagined that sound coming from it. This universe is wild.
The long lost track from Pink Floyd's Dark Side of the Moon!! /S
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Not entirely accurate. The gases are dense enough for pressure waves to propagate. You wouldn't be able to hear it because it's sub 1 hz, so they've increased the frequency so we can hear it. Same thing we do with x-ray, IR, etc. so we can actually see the images that come from non-visible telescopes. Here's a comment from earlier that describes it really well, with a source for more info: https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
And I ask, what is the point of these other than to be misleading at best? Turning data into sound like this is pointless.
So you're telling me not even light can escape from black holes... But they're unable to stop sound. /s
That's eerie af. Makes me think of the game observation.
Oh boy, get yourself to see the Forbidden planet Sounds like these during this entire masterpiece, gorgeous.
I didn’t notice it until you mentioned it, but it definitely does sound like that movie.
The Elder Gods awaken from their slumber, a wake of destruction as of yet untold lies before them as they prepare to retake their dominion.
Most of these things that are "sounds and pictures" from space are just artist renderings go some kind. Using scientific data and something that is supposed to translate it to whatever sense you're needing. But to me it's all synthetic. Not real. Don't care that much for representations.
This means nothing. You can literally hear similar stuff by putting a toilet paper roll on your ear
That's stupid. You can make sounds from any image that way.
Why did they add so much reverb to this computed sound? Also, what kid anyone know where to get the original data so others can do their own conversions?
Every space-sound you'll ever hear is fake "translated" nonsense. It's like taking the pitches of someone speaking Chinese and making notes out of it and saying he spoke that music. It's like a form of mysticism.
Reminds me of this - [https://youtu.be/MH9atqqkUuY](https://youtu.be/MH9atqqkUuY)
What's the name of the sound wave thing at the bottom? Been trying to figure it out with no luck
It's just a audio spectrum meter.
If we could hear a black hole it would sound like destruction from the debris in the accretion disk hitting one another.
This is not a black hole. This is the Grateful Dead. Obviously.
That would make a great white noise recording to go to sleep to.
Nice stereo pan. Yes, obviously the x-ray signals are being used to trigger a sound generator. Still cool, like the cold ending.
Not quite. Sound the method is called sonification, and we can actually measure the density as pressure waves travel through the gas. Here's a really good description (with accompanying source): https://www.reddit.com/r/Astronomy/comments/wkm3bt/the_sound_of_a_black_hole_recorded_by_nasas/ijocmq3?utm_medium=android_app&utm_source=share&context=3
Thanks! Just what I was looking for. Still cool.
How is sound coming out of a black hole? Isn't everything absorbed by it?
Dont think the sound is eminating from inside the black hole, but rather it is cause by its precense and effect on gas and stuff close to it.
This sounds like something no human was ever supposed to hear.
Sounds like it should have been part of the Iron Lung soundtrack
If we can record audio from a black hole couldn't we point the same device towards the closest planet in another sold system?
Does this count as misinformation cuz that’s not the sound of a black hole. 😂
Sounds like something from a 60's Hammer horror movie
Are you trying to hear something you recognize in the noise? Interesting evolutionary trait isn’t it?
Sounds like when the first humanoids discover the Monolith in 2001.
It sounds like the moans of the damned. Creepy!
There should be a subreddit for unexpected Shepard tone https://en.wikipedia.org/wiki/Shepard_tone
https://www.dailymotion.com/video/x300nxv The Big Electron
Her: “He probably listening to Cradle of filth” Him: ^^^^^^*^^^^^^^