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| | Voyager |
 | | The twin Voyager spacecraft were designed to perform close-up observations of the atmospheres, magnetospheres, rings, and satellites of Jupiter and Saturn. |
 | | Between them, Voyager 1 and 2 made numerous discoveries, including the discovery of new moons about several of the planets, Uranus' unique magnetic field, and the presence of volcanic activity on Io. |
 | | The cost of the Voyager 1 and 2 missions, including the spacecraft development, launch, and mission operations through the Neptune encounter, is $865 million. |
| www.astronautix.com /craft/voyager.htm (861 words) |
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