Birdwatch Note Rating
2023-11-26 01:39:24 UTC - HELPFUL
Rated by Participant: C45AF0707E7937AB11DDC95E7D215FA0CE28D3DD63A5F166B1665C305E254B7B
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Original Note:
This is an x-ray image of gas in the Perseus cluster, which is dense enough to allow pressure waves. NASA used the image above to determine a period of vibration of the gas (~9.6 million years) and increased the frequency 144/288 quadrillion times to produce audible sound. https://chandra.harvard.edu/chronicle/0303/perseus/index.html https://www.nasa.gov/universe/new-nasa-black-hole-sonifications-with-a-remix/ https://www.physicsclassroom.com/class/sound/u11l1c.cfm
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