So there’s the Tie Dye Fri-yay! Leopard Teachers Weekend Day Of The Week T-Shirt moreover I will buy this “event horizon” of a black hole- this is the “point of no return” from which nothing including light (and definitely not sound) can escape. But beyond that Event Horizon boundary, a black hole just has normal gravitational effects that vary depending on its mass. Stuff orbits it, flies past and gets bent, maybe slingshots around, etc. Similar to the orbital mechanics of the sun and its planets, comets, etc etc. Since space inside galaxies has a lot of random gas floating around, this is collecting and swirling around the black hole (beyond the event horizon) and all this moving gas vibrates and makes waves that are basically like sound waves. Think of how the earth is basically “escaping” the pull of the sun by orbiting in a circle. We are falling towards the sun, but thankfully enough sideways momentum that we wind up in orbit instead of flying straight in.
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Wouldn’t that mean that every black hole sounds different based on the Tie Dye Fri-yay! Leopard Teachers Weekend Day Of The Week T-Shirt moreover I will buy this orientation of the various stuff orbiting it? So then this wouldn’t be the actual sound of the black hole, but the object around it being effected by the black hole? Correct? That is exactly what “sound” is. When you make a sound, it’s the air around you affected and moved by whatever you’re doing. The ear is measuring the air movement and translates it into sound. In this case not air is getting moved by the black hole but sparse gas and particles. And NASA did what our ears do, and measured this movement and translated that movement into something we can hear. That’s all sound in essence. It’s just your brain’s interpretation of pressure waves that vibrate your eardrums. You don’t actually hear the truck passing by, you hear how the air was affected and your brain interprets that. I dont think sound is escaping tho. Its more like the blackhole is fucking banging the fabric of space with its immense mass and thats what creating those waves? Thats my hypothesis (not really I just vaguely remember something like that being said on NatGeo) Wouldn’t it be even way lower? Isn’t each octave x2? I can’t even fathom how low it must have been if it sounds octaves below a contrabass and was actually 50 octaves lower. Is that even “sound”? It’s kind of like saying a 4v5v6 polyrhythm is a major chord. Technically true, but you need to speed it up to >1000bpm to discern that by ear.