Pluto Flyby Occurs 50 Years After 1st Mars Encounter

Tuesday, July 14, 2015 - 04:30 in Astronomy & Space

The New Horizons probe's epic flyby of Pluto today (July 14) comes on a very special date in the history of space exploration: Exactly 50 years ago today, NASA's Mariner 4 spacecraft made the first flyby of Mars.

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