American automatic probes for the exploration of the inner planets, which between 1962 and 1971 obtained important data on the nature of Mercury, Venus and Mars.

The Mariner probes were a derivation of the Ranger probes, used for the exploration of the Moon. They were constituted by a hexagonal base structure that contained the scientific instrumentation, two solar panels that opened in space as unfolded wings, cameras, sensors and a satellite dish for the transmission of data to ground.

They were put into orbit by a missile of two AtlasAgena or Atlas-Centaur sections and propelled on an inertial flight path to the predetermined planet.

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TidesMars (probe)