On Sept. 4, 1962, NASA's Mariner 2 spacecraft performed the first-ever rocket maneuver in deep space as it did a quick mid-course correction on its way to Venus. It had launched just eight days ...
Mariner 10 may have been the last of the Mariner spacecraft series, but it was the first to complete many new tasks. It was the first U.S. spacecraft to visit two planets - Venus and Mercury - in one ...
Mariner 2, the first successful mission to another planet ... something that the Voyager probes have offered tantalizing glimpses of in the past. They are the only two spacecraft to cross the ...
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