Marnier 10 studied 2 planets, Venus and Mercury. It studied Venus on it's way to Mercury. Marnier 10 managed 3 fly-bys on Mercury before running out of maneuvering gas.
Mercury
Mariner 9 took on that spacecraft's mission of mapping 70 percent of the Martian surface in addition to its own objective of studying changes over time in the Martian atmosphere and surface.
Saturn
Mars
The mariner spacecraft first landed on Mars 1971 I think.
Mercury
Mercury
mercury
Mercury
Mercury
mariner 4
Mercury
Mariner 9
The Mariner 2 spacecraft inspected Venus in late 1962.
The mariner spacecraft explored Mercury, Mars, and Venus. The first successful space probe and first spacecraft visit to a planet was Mariner 2.
As of 2018, two spacecraft have visited the planet Mercury so far. The first was called Mariner 10. During 1974 and 1975, Mariner 10 flew by Mercury three times and mapped about half of the planet's surface. Mariner 10 also discovered Mercury's thin atmosphere and detected its magnetic field. More recently, Messenger went into orbit around Mercury in 2011, and completed mapping of 100% of Mercury's surface in 2013.
The Sub-Mariner - 1966 The Planet of Doom 1-11 was released on: USA: 1966