Not a meteor. Not satellite debris. A structured pulse, riding a frequency the array wasn't even tuned to receive. It came through as raw text on his debug console, line by slow line:
The terminal beeped. A file transfer prompt. BBS2 -Bobby-s Nightshift Parts 1 2-
The next line appeared:
I'm in. What now?
Bobby sat back. His shift ended at 6 AM. He could ignore this. Delete the file. Tell no one. Go back to his normal life as a nobody night watchman in a nobody observatory. Not a meteor
He typed: