I understand that sound waves essentially stretch and disperse very quickly, but technically, aren’t the very tiny sound waves still there, thousands of miles away?

Question

Could very very sensitive instruments pick up on sounds that happened far away?

In: 9

Answer 1

At some point the waves will have dispersed so much the sound vibrations would be smaller than the random motion of the air molecules. There would be no way to detect the original sound at that stage.