NASA: National Space Science Data Center Mariner 4 to MarsMariner 5 to VenusMariner 6/7 to MarsMariner 9 to MarsMariner 10 to to Venus and MercuryVoyager to Jupiter and SaturnVoyager 2 to Jupiter, Saturn and Uranus, NeptuneESA: Giotto (Comet Halley Flyby)2003 NASA/NSSDC