<i>Excellent idea. But does anyone know if that is feasible from an engineering standpoint. I would guess there must be some issues with changing from a Saturn orbit to a Titan orbit.</i><br /><br />Cassini does not have the propulsive delta-V capability to insert into Titan orbit, and this issue was studied at some length in consideration of possible mission extensions. Also complicating the case at Saturn is that, unlike at Jupiter, there are no additional moons sufficiently large enough to impart enough delta-V or to "pump" or "crank" Cassini's orbit.<br /><br />Note that the now old Europa Orbiter (EO) design, and not the new JIMO concept that uses simple brute force propulsion, would have conducted a Galileo-style tour to shape its trajectory to reach a "fuzzy" gravitational boundary at Europa. At that point, with Jupiter acting as a "third body," EO would have used this effect and propulsion to insert into a relatively short-lived, high-inclination europan orbit.<br /><br /><i>If there was nothing to it, I would assume NASA would have parked Galileo around Io rather than crashing it into Jupiter.</i><br /><br />Interestingly enough, consideration was given, early in the Galileo design process when a fully functional HGA was assumed, to ending the mission with a spectacular Ranger-style crash into Io. With the crippled HGA, though, this option was no longer available (<i>i.e</i>., no way to return the high rate imagery data in real time).<br /><br /><i>Which raises a question for me, does anyone know what steps, if any, NASA took to sterilize Huygens?</i><br /><br />Since Huygens does not carry life detection instruments, the probe was rated as Category II under COSPAR planetary protection standards; therefore, it was not sterilized. Hugyens was, however, assembled under Class 100,000 clean room procedures to reduce biological burden.