NASA releases black hole mixtape
Released as part of NASA’s Black Hole Week, data from observations of black holes is translated into eerie space music.
We don't usually consider the universe to be noisy. In truth, most of us imagine it to be dark and strangely quiet. That's correct
However, the subsonic hum of billions of black holes can be heard. And NASA is assisting us in determining what these strange objects sound like.
Because the great majority of space is vacuum, you may reasonably conclude that sound waves have no medium (reverberations of matter).
While this is true, astronomers have discovered that galaxy clusters contain sufficient gas, dust, and particles to transmit sound.
NASA published a new "sonification" of the supermassive black hole at the centre of the Perseus galaxy cluster just in time for the organization's Black Hole Week (last week)
The cluster is around 240 million lightyears from Earth and comprises over 1000 galaxies.
Astronomers have been studying Perseus' hum since 2003. The vibrations caused by the black hole at its heart can be converted into a note 57 octaves below middle C
Before you ask, yeah, that's a lot lower than late bass-baritone crooner Barry White could sing.
This is the first time that the previously detected sound waves of Perseus have been made audible. But first, they had to be translated into human hearing range
They were 57 and 58 octaves higher. To put it another way, the frequency of the sound was increased by 144 and 288 quadrillion (1 with 15 zeroes) times over the original wave.
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