Who says astronomers don't have a sense of humor? Jupiters moons have always been named after women associated with the king of the gods in mythology. Callisto, Europa, and Ganymede were all seduced by Jupiter, with some famous offspring from each of them. Not too be left out, the greeks have Io, Sinope and Lysithea.
And then who do they send to check up on the mighty king but his wife Juno (who they named the probe after).