I mean... The Enterprise is always doing questionable things with that deflector dish.
My head cannon says the Enterprise explored a wormhole to the Farscape universe, did a reverse gravaton beam on Moya, then immediately went back through the wormhole... And that's how Moya got pregnant.
Would also explain why all starships in the federation, after that point, were female (no dangly deflector)
In the episode where the baby alien is nursing off the enterprise (or was that Voyager?) which part of the ship was it suckling? That part is the boobies.