For ten points, what space mission was named after the scientist who first observed Jupiter with a telescope?
In 1993 it imaged the asteroid 243 Ida and discovered its moon.  The only observer able to view directly the impact of Comet Shoemaker-Levy, it also bolstered evidence of an ocean on Europa and released a probe that descended into the Jovian atmosphere.  For ten points, what space mission was named after the scientist who first observed Jupiter with a telescope?
In 1993 it imaged the asteroid 243 Ida and discovered its moon.  
Galileo