challenge. I pan back to look at the Petrova line. Something’s wrong now. Half of it is just…gone. It’s coming out of Tau Ceti, just like it was a few minutes ago, but then it stops abruptly at a seemingly arbitrary point in space. “What is going on?” Did I mess up their migration pattern, maybe? If it’s that easy, wouldn’t we have worked that out when the Hail Mary was wandering around our own solar system? I zoom in on the cutoff point. It’s just a straight line. Like someone took an X-Acto knife to the whole Petrova line and threw away the scrap.
