This is the sound of data from the black hole at the center of galaxy Messier 87. 

The sound uses data from telescopes including X-rays from Chandra, light from Hubble, and radio waves from the Atacama Array in Chile.

Each set of telescope data is interpreted as a different range of audio waves which create melodic, chord like tones.

The original sonification was only ~30 seconds but this version has been stretched significantly longer using special software and has been balanced between the right and left channels.

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