Ybys - definition please

First, please ignore accidentally duplicated message about this 'ybys' thing.
Thanks all.
D.

no problem, I've deleted that for you.

I'd say some pedant decided that "Fly-by" is inappropriate because a spacecraft is not technically"flying".

This sort of "pc" thinking is common in America.

Recently they redefined "hunger" as "food insecurity".
(See: www7.nationalacademies.org/cnstat/Concep..._of_Hunger_Paper.pdf )

And,as we all know, they redefined "planet" because two committes argued about whose baliwick newly discovered bodies came under.

Peter.