Only the crazies suggested that the sound did not originate on Earth. Everybody else tried to explain it as far-away industrial machinery radiating tones that were trapped by an inversion layer of cool air. The noise was like nothing anyone in Sharpsburg had ever heard and, against the odds, the crazies were correct.
Far away, up into the darkness, the puppeteer of the star Sirius was frantic. The strings that supported her star were rubbing together, resonating and interrupting the deep silence of space. She was concerned that the people on the blue planet would realize that their night sky was a vast and complex illusion.