As of February 2010, eight robotic probes have made been to
Jupiter. Seven visited Jupiter for short periods as they flew by.
One remained in orbit around Jupiter for almost eight years. They
are:
Galileo - 1995-2003 (orbit)
Pioneer 10 - 1973 (flyby)
Pioneer 11 - 1974 (flyby)
Voyager 1 - 1979 (flyby)
Voyager 2 - 1979 (flyby)
Ulyssess - 1992 (flyby)
Cassini - 2000 (flyby)
New Horizons - 2007 (flyby)