Eerie audio emanating from the Perseus cluster reminds social media users of sci-fi films and hungry stomachs
The agency described it then as a result of pressure waves sent out by the black hole, saying it was a whopping 57 octaves below middle C, which means scientists had to raise the frequency quadrillions of times to make it audible.
“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,” they said in a statement. “In some ways, this sonification is unlike any other done before… because it revisits the actual sound waves discovered in data from NASA’s Chandra X-ray Observatory.”
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