Identical payload to the Nimbus-B meteorological R&D satellite which was lost due to a malfunction in the booster guidance system less than a year before. It was designed to serve as a stabilized, earth-oriented platform for the testing of advanced systems for sensing and collecting meteorological data. It was lost due to a malfunction in the booster guidance system.
Sun-Synchronous OrbitMariner 6 and 7 comprised a dual-spacecraft mission to Mars, the sixth and seventh missions in the Mariner series of spacecraft used for planetary exploration in the flyby mode. The primary objectives of the missions were to study the surface and atmosphere of Mars during close flybys to establish the basis for future investigations, particularly those relevant to the search for extraterrestrial life, and to demonstrate and develop technologies required for future Mars missions and other long-duration missions far from the Sun.
Mars flyby