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Viking 1-2
The Viking mission was to mars. It was to take pictures and look at the atmosphere and it discovered volcanos. -
Voyager 1-2
The Voyager mission was to look at Saturn's rings and the moons and magnetic fields of Saturn and Jupiter. It found that both planets have forty moons. -
Galileo
The Galileo mission was sent for Jupiter. It was to study the solar system and Jupiter's moons, and it found the icy surface of Europa. -
Magellan
The Magellan mission collected radar and atmosphere images of venus. -
Mars Global Surveyor
This mission was to Mars to take pictures of the poles, and it found a possibility for liquid water.