Galileo was a spacecraft to study Jupiter and its moons launched in 1989 from the Space Shuttle Atlantis, and arriving at Jupiter in 1995. It entered Jupiter orbit, and dropped a probe into Jupiter, operated for years, and finally was plunged into Jupiter in 2003. On the way to Jupiter, tt flew by Venus, Earth, and asteroids 951 Gaspra and 243 Ida, discovering the latter was a binary minor planet. Instruments:
Its primary mission was for two years, followed by a two year extension called the Galileo Europa Mission (GEM), focusing on Europa, then the Galileo Millennium Mission (GMM) following up on earlier discoveries, particularly regarding the moons.