Solved
try for baby on spaceship not making baby
My sim has, so far, tried for baby on a spaceship 4 times, and is still not pregnant. While there is a non-zero chance that pregnancy will not result from any try for baby attempt, the chance asymptotically approaches zero the more times it is done. Either my sim is incredibly unlucky (or lucky, depending on which result she really wants), or try for baby on spaceship is broken. (And I just checked in CAS, and made sure that she is set to be able to become pregnant, and her partner (Knox Greenburg) is able to make others pregnant.)
Version 1.115.216.1030
She was incredibly unlucky. One more trip on the spaceship gave her an urge to throw up, confirmed by a pregnancy test.
