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Scientists had long been intrigued by Mercury, the innermost planet of our solar system. Despite its proximity to the Sun, Mercury remained largely unexplored, with many questions remaining about its surface features, geological composition, and magnetic field. The scientific community recognized the need for a dedicated mission to study Mercury up close and unlock its secrets.

Mariner 10 with Instruments Labeled

Mariner 10’s view of Venus

Mariner 10’s Second Flyby of Mercury Showing Equator to South Pole