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Sep 4
On this day in space! Sept. 4, 1962: NASA's Mariner 2 spacecrafts performs the 1st-ever maneuver in deep space so it could reach Venus
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. Here's why it mattered.
