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On September 9th, 2003 Change X-Ray observatory discovered actual sound waves being emitted from the resonation of a supermassive black hole near the center of the Perseus star cluster. The astronomers working at the observatory gathered this information from observing an outward ripple pattern in the clouds surrounding the black hole. The sound had thus far traveled hundreds of thousands of lightyears from the black hole, in all directions, creating this ripple pattern in the gas clouds.

Here's the full story: http://science.nasa.gov/headlines/y2003/09sep_blackholesounds.htm

As for the sound, it's low ... Very low. So incredibly low that it could only be detected by the ripples formed in the gas clouds. The exact depth of the note takes the record as the lowest sound ever to be generated by any object in the universe. The 'note' resides a whopping 57 octaves below the pitch of middle-C on a normal piano. Middle-C has a frequency of 261.63Hz, and given the amount of decrease between measures, that would make the frequency of the black hole's resonation approximately 20x10-14. In long terms, that's 0.0000000000002Hz. The limit of human hearing is 20Hz. That pitch is fifty-seven octaves below Middle-C, located here:
User Image - Blocked by "Display Image" Settings. Click to show.

Fifty-seven octaves is much lower than anyone could ever hope to hear, and just the thought of a note so low is mind boggling. This sound is so impossibly low and ominous that not even subsonic scanners could pick it up. Here are some images of what the rippled clouds look like, the supermassive black hole placed at the center as the globe of light
User Image - Blocked by "Display Image" Settings. Click to show.
User Image - Blocked by "Display Image" Settings. Click to show.

I bring this topic to GD because it's so mind-bogglingly ominous. Try to imagine a sound as low as that.
scv610's avatar

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we woudl hear it do

The worst spelling of the GD I
Reminds me of farts.
mmhmm.

silent but deadly.
disastrous MISHAP's avatar

Profitable Fatcat

That was done in their free time while not jerking it to astronaut porn.
But in all seriousness. The likelihood of any of that information being of any use to people in the world is way lower than that sound.
Unless it's like some kinda portal to heaven. Shhhh! Don't tell!
StarchaserX's avatar

Clean Member

Miklotov
mmhmm.

silent but deadly.
i lol'd
That's freaky to think about, I'm trying to imagine the sound. burning_eyes
the pics are horiblely hard to look at becuz there fuzzy. BUT trying to imagine the sound is impossible for me. i can just imagine the thudder of it tho. it would probly split all your cells so bad theyd decinigrate and your just literally fall apart. like if sand were to just float in a clutter in a no-gravity zone eek
Oh dear God...
I wonder if an animal could hear it?
I bet it goes to another universe full of musical aliens...
Hot musical aliens...
iRayneMoon
Oh dear God...
I wonder if an animal could hear it?
I bet it goes to another universe full of musical aliens...
Hot musical aliens...

No living thing, nor any machine could hear this sound. The only reason it was detectable was because of the structure of the waves formed in the gas clouds surrounding the black hole.
So sound travels through the vacuum of space, now? How times change...
AstroGlow
So sound travels through the vacuum of space, now? How times change...

Sound is a wave and some waves can move through vacuums. As long as there is something to vibrate sound is made and travels. Because the gas is there and moving there is a sound, being in a vacuum really makes no difference for also can the dust and gases are close enough to each other transfer the energy to the their neighbor.

Yes, there is sound in space. Stars and black holes send out shock waves all the time and they pass through dusts and gas clouds they make a sound.
Mhmm, The only sounds you would hear in space are vibrations.
Unless you had a radio wave converter strapped to your head.

But I imagine this low sound to be like a VERY VERY low creek from a sunken boat in the ocean.
The brown noise!
mudkip lieks U's avatar

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