f556c24b__04_22_2004____Background_Info__2004
[1990] Probe our solar system planets. [Future] Follow-up observations of Kuiper Belt objects. Monitor the weather on our solar-system planets. [2004] 
Provided a front-row seat to a unique event: the collision of pieces of comet Shoemaker-Levy 9 with Jupiter Monitored the weather on Mars Probed the atmospheres of the outer planets.
HubbleSite - NewsCenter - The Lure of the Rings (04/22/2004) - Background Info
2004