Robotic Exploration of Space
In January 1959, only a little more than a year after the launching of Sputnik 1, the Soviet Union's Luna 1 flew 5,955 kilometers (3,692 miles) above the surface of...
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The Unmanned Exploration of the Solar System: Mariner, Viking, Pioneer, and Voyager
Overview
On January 2, 1959, the Soviet Union launched Luna 1, the first manmade object designed to explore another ...
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Robotic Exploration of Space
The Unmanned Exploration of the Solar System: Mariner, Viking, Pioneer, and Voyager