Sound of two black holes colliding

With a nod to Zen students.

“Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun. Orbiting this at a distance of roughly ninety-two million miles is an utterly insignificant little blue green planet whose ape-descended life forms are so amazingly primitive that they still think digital watches are a pretty neat idea.”

Douglas Adams, “The Hitchhiker’s Guide to the Galaxy” [originally a radio comedy broadcast on BBC Radio 4 in 1978]