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50 years ago, I was fascinated by the launches of the unmanned Viking I & II spacecraft which were the first craft to show mankind clear images of the surface of the red planet Mars. As I had been doing with astronauts/cosmonauts I also wrote to all engineers of the unmanned spaceflight missions.
Every 26 months, as the Earth & Mars are in correct positions, a trip to Mars using an elliptical Hohmann transfer orbit can be initiated. Such an Earth-Mars journey takes about 9 to 10 months…
Every 26 months, as the Earth & Mars are in correct positions, a trip to Mars using an elliptical Hohmann transfer orbit can be initiated. Such an Earth-Mars journey takes about 9 to 10 months…
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