Black Hole Majestic
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Black Hole Majestic
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It’s the perfect horror movie soundtrack.
Have you ever wondered what a black hole sounds like? Well, if you were wondering — or if you thought it was ominously silent — NASA has found out, and yes, black holes actually make noise. It’s worth a moment to listen because it’s strange, eerie, and it sounds like the perfect horror movie soundtrack, as if we’re at the end of 2001: A Space Odyssey.
According to CNET , NASA captured the soundwaves of a black hole more than 200 million light-years away from us. “The black hole is found in the center of what’s known as the Perseus galaxy cluster, which is a majestic 11 million-light-year-wide bundle of galaxies shrouded by hot gas,” the publication states.
So, the Perseus galaxy cluster is a giant gas cloud, and that’s how scientists were able to capture the sound of the black hole. Waves have to vibrate through something to hear sound — but, since space is a vacuum, there’s nothing to vibrate off, so most believe there is no sound in space, per CNET .
But all that gas around the black hole made it possible to capture its unique sound. The black hole at Perseus can get beyond the space sound vacuum because it’s so close to all the gas. And that’s what the scientists were able to focus on — the hot gas ripples.
Now, our human ears can’t pick up on the sound ripples, but NASA’s equipment can. So the scientists scaled the sound in such a way that we could hear what a black hole sounds like.
“The [sound waves] are being heard 144 quadrillion and 288 quadrillion times higher than their original frequency,” NASA said.
NASA tweeted the sound clip of what the black hole sounds like, scaled up for our little ears. And it’s a beautiful, haunting sound that seems very fitting for a thriller or horror movie.
Now, of course, it’s not possible to know if this is precisely what the black hole sounds like, since it’s so enhanced, but it’s still really, really cool.
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An eerie soundtrack brought to you by the Perseus galaxy cluster.
Monisha Ravisetti is a science writer at CNET. She covers climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical thought experiments.
Previously, she was a science reporter with a start-up publication called The Academic Times, and before that, was an immunology researcher at Weill Cornell Medical Center in New York. She graduated from New York University in 2018 with a B.A. in Philosophy, Physics and Chemistry.
When she's not at her desk, she's trying (and failing) to raise her online chess rating. Her favorite movies are Dunkirk and Marcel the Shell with Shoes On.
During black hole week , back in May, NASA dropped a remix that will haunt you until the end of your days.
More specifically, the space agency made a melody from the soundwaves of a vast, monstrous black hole that sits more than 200 million light-years away from Earth. The black hole is found in the center of what's known as the Perseus galaxy cluster, which is a majestic 11 million-light-year-wide bundle of galaxies shrouded by hot gas.
And although the sheer magnitude of Perseus and its galaxies is jaw-dropping, astronomers have been most interested in … all that hot gas. The space clouds are precisely why we're able to hear the sounds of something we can barely even see or conceptualize: the massive black hole at Perseus' center.
They're likely exactly what you'd expect a black hole to sound like: eerie, scary, mysterious, maybe something Thom Yorke can sample for his next album. Maybe even pained, if you listen carefully enough.
Anyway, now that you have your black hole week soundtrack , here are the specifics of what you're hearing.
Decades ago, astronomers discovered Perseus' void-like interior sends out pressure waves. These waves sort of ripple through all the surrounding hot gas in the area, and those ripples, in essence, can be translated into sound.
Think of sound waves as the vibration of air -- or rather, the vibration of things (atoms, molecules) within the air. Our ears can capture those vibrations and turn them into listenable noise here on Earth, but in space, things are a little different.
Because space is a vacuum, there isn't any medium for sound waves to travel through. This is why space is often considered totally quiet. But the silence isn't because cosmic objects aren't making sounds. Their waves just don't have anything to vibrate.
Perseus' black hole, on the other hand, gets past this space vacuum sound barrier because it's so close to the cluster's gas. It can create sound wave vibrations, and those are the hot gas ripples scientists are focused on.
As such, in 2003, a team from NASA's Chandra X-ray Observatory took astronomical data from the gassy ripples and translated that into normal sound waves we're used to on Earth. But, for a long time, there was a major hurdle preventing us from listening to the black hole's song. When scientists completed the translation, or sonification process, they found that Perseus' abyss plays a note that's a whopping 57 octaves below middle C.
Our human ears can't hear that, which is where NASA's remix comes in.
In honor of black hole week, the agency extracted the already-identified black hole sound waves and scaled them up by 57 and 58 octaves so we can all, finally, listen to the call of the void.
"Another way to put this," NASA said, "is that the [sound waves] are being heard 144 quadrillion and 288 quadrillion times higher than their original frequency."
And, as an added bonus, NASA also released another, much less ominous, black hole sonification. This one's of the abyss at the center of the galaxy Messier 87, aka the black hole that's famous for being the first-ever photographed chasm.
This track, however, is only so beautiful because it's not exactly the product of pure, isolated astronomical data sonification like the music of Perseus' void. It comes from three different vessels of data -- Chandra X-rays, optical light from Hubble and radio waves from the Atacama Large Millimeter Array in Chile -- overlaid upon one another.
The X-rays play high tones, optical light data play medium tones and radio waves are the alto's with the lowest tones.
Together, they make a bittersweet symphony.
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Want CNET to notify you of price drops and the latest stories?
Science
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Want to hear what a black hole sounds like? NASA has you covered.
Spice up your small talk with the latest tech news, products and reviews. Delivered on weekdays.
© 2022 CNET, a Red Ventures company. All rights reserved.
US
France
Germany
Japan
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An eerie soundtrack brought to you by the Perseus galaxy cluster.
Monisha Ravisetti is a science writer at CNET. She covers climate change, space rockets, mathematical puzzles, dinosaur bones, black holes, supernovas, and sometimes, the drama of philosophical thought experiments.
Previously, she was a science reporter with a start-up publication called The Academic Times, and before that, was an immunology researcher at Weill Cornell Medical Center in New York. She graduated from New York University in 2018 with a B.A. in Philosophy, Physics and Chemistry.
When she's not at her desk, she's trying (and failing) to raise her online chess rating. Her favorite movies are Dunkirk and Marcel the Shell with Shoes On.
During black hole week , back in May, NASA dropped a remix that will haunt you until the end of your days.
More specifically, the space agency made a melody from the soundwaves of a vast, monstrous black hole that sits more than 200 million light-years away from Earth. The black hole is found in the center of what's known as the Perseus galaxy cluster, which is a majestic 11 million-light-year-wide bundle of galaxies shrouded by hot gas.
And although the sheer magnitude of Perseus and its galaxies is jaw-dropping, astronomers have been most interested in … all that hot gas. The space clouds are precisely why we're able to hear the sounds of something we can barely even see or conceptualize: the massive black hole at Perseus' center.
They're likely exactly what you'd expect a black hole to sound like: eerie, scary, mysterious, maybe something Thom Yorke can sample for his next album. Maybe even pained, if you listen carefully enough.
Anyway, now that you have your black hole week soundtrack , here are the specifics of what you're hearing.
Decades ago, astronomers discovered Perseus' void-like interior sends out pressure waves. These waves sort of ripple through all the surrounding hot gas in the area, and those ripples, in essence, can be translated into sound.
Think of sound waves as the vibration of air -- or rather, the vibration of things (atoms, molecules) within the air. Our ears can capture those vibrations and turn them into listenable noise here on Earth, but in space, things are a little different.
Because space is a vacuum, there isn't any medium for sound waves to travel through. This is why space is often considered totally quiet. But the silence isn't because cosmic objects aren't making sounds. Their waves just don't have anything to vibrate.
Perseus' black hole, on the other hand, gets past this space vacuum sound barrier because it's so close to the cluster's gas. It can create sound wave vibrations, and those are the hot gas ripples scientists are focused on.
As such, in 2003, a team from NASA's Chandra X-ray Observatory took astronomical data from the gassy ripples and translated that into normal sound waves we're used to on Earth. But, for a long time, there was a major hurdle preventing us from listening to the black hole's song. When scientists completed the translation, or sonification process, they found that Perseus' abyss plays a note that's a whopping 57 octaves below middle C.
Our human ears can't hear that, which is where NASA's remix comes in.
In honor of black hole week, the agency extracted the already-identified black hole sound waves and scaled them up by 57 and 58 octaves so we can all, finally, listen to the call of the void.
"Another way to put this," NASA said, "is that the [sound waves] are being heard 144 quadrillion and 288 quadrillion times higher than their original frequency."
And, as an added bonus, NASA also released another, much less ominous, black hole sonification. This one's of the abyss at the center of the galaxy Messier 87, aka the black hole that's famous for being the first-ever photographed chasm.
This track, however, is only so beautiful because it's not exactly the product of pure, isolated astronomical data sonification like the music of Perseus' void. It comes from three different vessels of data -- Chandra X-rays, optical light from Hubble and radio waves from the Atacama Large Millimeter Array in Chile -- overlaid upon one another.
The X-rays play high tones, optical light data play medium tones and radio waves are the alto's with the lowest tones.
Together, they make a bittersweet symphony.
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