The Mariner spacecraft were unmanned at launch.
No, Mariner 10 was used as a space probe for a Flyby of Venus and Mercury launched in 1973.
They have already sent two probes near Mercury: Mariner 10, and MESSENGER. The BepiColombo is a proposed joint mission between JAXA and ESA, which will launch a further two probes.
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Mercury was studied by the Mariner 10 Probe and has a crater pitted surface.
Mercury was studied by the Mariner 10 Probe and has a crater pitted surface.
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 first of two spacecraft to visit the planet was Mariner 10, which has mapped about 45% of the planet's surface from 1974 to 1975. The second is the MESSENGER spacecraft from NASA, which mapped another 30% during his trip to Mercury January 14, 2008. MESSENGER is now in orbit around Mercury to complete the mapping.
There have been two space probes: Mariner 10 and Messenger.
u.s.a
Mariner 10
Mariner 10 and Messenger.