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9781541604179

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""When Caleb Scharf was 15 months old, on July 20, 1969, a human being stepped on another world for the first time, as significant a moment in the history of life as the day 370 million years ago when the first fish emerged from the sea onto dry land. Scharf, now a renowned astrobiologist, is convinced the landing of Apollo 11 was a mere stepping stone in life's transition from a planetary to a cosmic phenomenon. In this wide-ranging, exhilarating and engagingly written book, he makes his case brilliantly.""--Marcus Chown, author of A Crack in Everything

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Caleb Scharf received the 2022 Carl Sagan Medal while director of astrobiology at Columbia University and is currently the senior scientist for astrobiology at NASA's Ames Research Center. He has written several previous trade books and is a frequent contributor to Scientific American and Nautilus magazine. He divides his time between Silicon Valley and New York City.

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