Voyager: The Interstellar Mission Selected Images From the Planetary Tour Planetary Exploration The twin Voyager spacecraft were launched in 1977 to explore the giant outer planets, Jupiter, Saturn, Neptune and Uranus. Nearly 30 years later and billions of miles from Earth, both craft send data back daily as they approach the edge of our solar system. Click ahead to see selected images from the planetary tour. Go to next slide>> 1 2 3 4 5 6   Jet Propulsion Laboratory    California Institute of Technology   + Image index