"Oh," Gela says, perturbed, "That's... reassurin'."

Not.

"That can happen at any time, can it?" The asteroid, flying out of space to strike the earth. No wonder the people here carry their little cell phones around in their pockets and walk around staring at them all the time. If Gela lived here and had to deal with the threat of something like that resting on her shoulders... she'd want the distraction too!

Changing tack, "You know so much about this. Where did you learn it all?"