A black hole generates a sound wave audible in principle across the cosmos

Evidence

“Astronomers have detected the deepest note ever generated in the cosmos, a B-flat flying through space like a ripple on an invisible pond,” trumpets an article on the website Science.com. The discovery was made in 2003 by NASA’s Chandra X-ray Observatory, which attributes the sound to a black hole in the Perseus cluster, the on-ramps of which spin off gas in waves strong enough to warm interstellar space. The tone thus generated stands 57 octaves below the middle-C note on a piano, and is therefore inaudible to the human ear. It has been sounding across the universe for 2.5 billion years. — George Michelsen Foy, Zero Decibels, 278

Categorization

• corroborated: 2 independent passages support this claim — George Michelsen Foy, Zero Decibels: The Quest for Absolute…, 278
• XREF: connects to: Expanding auditory imagination beyond physical hearing range reveals new sonic worlds — Pauline Oliveros, Deep Listening, 337

Broader Connections

• Expanding auditory imagination beyond physical hearing range reveals new sonic worlds #expands (0.70) — Pauline Oliveros, Deep Listening, 337