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"Next Stop Mars is one of the best books of its type I have seen, in discussing problems, opportunities, and alternatives for the first human Mars mission." (Richard Mckim, The Observatory, Vol. 138 (1262), February, 2018)
"A comprehensive book that ranges from the historical technical projects of the superpowers, to a detailed illustration of Martian astronomy, including and explainingthe many possible trajectories to reach our neighbour in the Solar System, the ideas for a reliable locomotion on the planet, and many other technical aspects, with a clear and understandable language." (Gabriella Bernardi, Astrocom et al., astrocometal.blogspot.de, February, 2016)