chicken fried rice
The mariner spacecraft explored Mercury, Mars, and Venus. The first successful space probe and first spacecraft visit to a planet was Mariner 2.
the first spacecraft to explore mars is the mariner 4
The Mariner 2 spacecraft inspected Venus in late 1962.
the name of the first spacecraft to first observe venus was venera 3. The year it observed venus 1962.
It was Mariner 2.
There were more than one spacecrafts that explored (or attempted to explore) Venus in 1962. Namely, Mariner 1 (US), Sputnik 19 (USSR), Mariner 2 (US), Sputnik 20 (USSR) and Sputnik 21 (USSR). http://www.mentallandscape.com/V_VenusMissions.htm http://nssdc.gsfc.nasa.gov/planetary/chronology_venus.html https://ssl.catalog.com/~ultimax.com/resource/venus.html http://www.friends-partners.org/partners/mwade/lvs/mola8k78.htm
The Mariner spacecraft were unmanned at launch.
That statement is incorrect. Mariner 2 was the first spacecraft to successfully fly by and study another planet, Venus, not scan. It provided valuable data on Venus' atmosphere and surface temperature.
Mariner 4
Mariner 2 in 1962. The planet was Venus.
Mariner 9
The Mariner spacecraft landed on the planet Mars, and the Apollo spacecraft landed on the moon.