Exactly 50 years ago, July 14th and 15th, 1965, the Mariner 4 Probe made the first fly-by of another planet, Mars. Yesterday, July 14, 2015, New Horizons made the first fly-by of Pluto, thus completing our first survey of the…
Exactly 50 years ago, July 14th and 15th, 1965, the Mariner 4 Probe made the first fly-by of another planet, Mars. Yesterday, July 14, 2015, New Horizons made the first fly-by of Pluto, thus completing our first survey of the…