![]() Today, both Voyager 1 and Voyager 2 are exploring the fringes of the solar system for possible clues to the mysteries of the universe and are expected to return useful data well into the 21st century.Įach 1825-pound Voyager is powered by three thermoelectric generators that produce energy from the radioactive decay of plutonium. Voyager 2 encountered Uranus and Neptune in 19, respectively. Scientists learned that the rings are composed mostly of water ice and feature spoke patterns and other unusual formations. Voyager's interplanetary mission continued to Saturn where both spacecraft photographed that planet's famous rings. Among several fascinating discoveries are a thin ring of dusty debris around the planet and extensive volcanic activity on the moon, Io. The Voyagers encountered Jupiter in 1979 and delivered photographic data that attracted worldwide attention and interest. Voyager 2 was launched first on August 20, followed by Voyager 1 on September 5. The two most intelligent machines ever built in the NASA space program, the explorers were launched from Cape Canaveral, Fla., in 1977. The Voyager explorers, which provided scientists and the world with the first detailed pictures of faraway planets, were designed and tested during 1972 to 1977. The two most intelligent machines ever built by NASA space program ![]()
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