But it's also very big, and GP doesn't even specify how far of a trip they're asking about nor how small a meteorite. "Extremely" and "very" don't cut it here.

But it's also very big, and GP doesn't even specify how far of a trip they're asking about nor how small a meteorite. "Extremely" and "very" don't cut it here. This is beyond the human ability to guess. You'd actually do at least some back-of-the-napkin math to give a real answer, and with a far enough trip, the answer may well become "Almost 100%".