I am reliably informed that Shuttle astronauts know all about diapers. Honestly. This is from a Chicago Tribune story about the Space Shuttle Discovery’s reentry from 2005 by the paper’s very fine science writer, Jeremy A. Manier:

“The crew’s main preparation for the return of gravity is to drink copious amounts of fluid–about half a gallon each in the hour before the de-orbit burn. Weeks of zero gravity trick the body into thinking it has too much fluid, and the body responds by retaining less water. If astronauts do not drink a day’s worth of salt-laden fluid just before re-entry, they can get light-headed when normal gravity returns.”

Evidently, considering they’re strapped in with a half-gallon of water in them, they have to wear diapers. Just another glorious nugget of information that has been broken loose from its obscure moorings by the electrifying story of the would-be murderous lady astronaut with the BB gun and the wig and the trenchcoat.