Mariner 6 launched

Mariner 6NASA and JPL launch the unmanned Mariner 6 space probe on a mission to Mars, where it will be joined by its yet-to-be-launched identical twin, Mariner 7. Mariner 6 will take five months to reach the red planet, with its slightly faster sister ship mere days behind it, and will fly past Mars twice as close as the planet’s previous unmanned visitors.

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