Stephen Cass at IEEE Spectrum Magazine reports in this 4 Jan 2020
article on four missions that will search for life on Mars this year.
Quote:
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Originally Posted by Stephen Cass, IEEE Spectrum
In 2020, Earth and Mars will align. Every 26 months, a launch window for a low-energy “Hohmann” transfer orbit opens between the two. This July, no fewer than four missions are hoping to begin the nine-month journey.
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Story here :-
https://spectrum.ieee.org/aerospace/...-signs-of-life