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Viking 1-2
The Viking mission was to rotate around mars and take pictures of the surface. It founded much of mars' main surface features. -
Voyager 1-2
Started to explore Jupiter and Saturn. Found 48 moons, unique systems of rings, and magnetic fields those planets possess. -
Magellan
The voyager missions were to collect radar images of Venus. It found many surface structures on Venus such as lava channels. -
Galileo
Wanted to explore Jupiter to study asteroids. Found comet shoemaker-levy and 9 fragment impacts on jupiter. -
Mars Global Surveyor
To study mars and its features. Gullies and debris features as well as sources of liquid water. -
Mars Pathfinder, Cassini
To test things out on the martian surface. -
Spirit & Opportunity Rovers
Mission to mars. 90501 mission and it found a small crater.