The Us Missions To Mars
Three weeks after the failure of Mariner 3, Mariner 4 was successfully launched on November 28, 1964. For its time, Mariner 4 was an amazing piece of equipment. Its basic structure was an eight-sided magnesium framework with seven electronics compartments. Four solar panels were attached to the top or sunward side of the octagon, which collected sunlight for electrical power. It contained a television camera and six other instruments, which were hoped to be used to measure conditions in space and near Mars. The instruments included radiometers, spectrometers, magnetometers, and a cosmic dust collector. The mission of Mariner 4 was to perform a simple flyby of Mars, instead of going into a complicated insertion orbit around the planet. On July 14, 1965 Mariner 4 flew over Mars at a distance of about 6,118 miles. The probe radioed back to Earth 22 television images covering approximately one percent of Mars’ surface. The blurry black-and-white images caused a stir among......
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