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If we send a message into space, will extraterrestrial beings receive it? Will they understand? The endlessly fascinating question of whether we are alone in th

Are alien civilizations really possible? If extraterrestrials exist, where are they? How likely is it that somewhere in the universe an Earth-like planet suppor

Originally published in Great Britain by Profile Books Ltd, 2016.

From this book, the reader will gain an insight into one of the most creative minds in the history of space exploration. Krafft Ehricke's contribution to space