Howie Glatter wrote:
David Buckna wrote ...

. . .An authoritative
book on Saturn made this point about Saturn's moon Iapetus: "At
estimated current rates it would require one thousand billion years
to produce the crater density observed on Iapetus."


Is that close to a trillion ?



It depends on where you come from.
In the UK a billion is 10^12. ie a million million (bi-million).
A trillion would be 10^18 (tri-million).

At least that's the way things used to be, now the US usage seems to have
mostly taken over.


DaveL