Chance of debris hitting somebody, goodness, one in a billion, trillion. the last piece to come down in 2001. the skylab back in '79. and there's the decaying orbit, coming down, no question about it. it's a matter of how it will come down. and hopefully in smaller and smaller pieces so we don't have to worry too much. and if it lands in western australia, like the 1979 skylab, we could get another fee for littering. isn't that something? i can't get over that. $400 is what we had to paid in '79 because of that. >> interesting. >> thanks. thank you for watching "cnn newsroom." i'm natalie al...