Caleb Scharf

Caleb Scharf
Greg Barrett

Caleb Scharf is the director of the Columbia Astrobiology Center. He writes the Life, Unbounded blog for Scientific American; has written for New Scientist, Science, and Nature, among other publications; and has served as a consultant for the Discovery Channel, the Science Channel, The New York Times, and more. Scharf has served as a keynote speaker for the American Museum of Natural History and the Rubin Museum of Art, and is the author of Extrasolar Planets and Astrobiology, winner of the 2011 Chambliss Astronomical Writing Award from the American Astronomical Society.  He lives in New York City with his wife and two daughters.


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Greg Barrett
Caleb Scharf

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Gravity's Engines

Caleb Scharf
A Scientific American Book

One of The Barnes and Noble Review Editors’ Picks: Best Nonfiction of 2012 Selected by The Christian Science Monitor as one of “21 smart nonfiction titles...


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