Cary Neeper's Blog: Reviewing World-changing Nonfiction - Posts Tagged "are-we-alone"

The Copernicus Complex: Our Cosmic Significance in a Universe of Planets and Probabilities by Caleb Scharf, New York, ScientificAmerican/Farrar, Strauss and Giroux, 2014. Astrophysicist Caleb Scharf’s Science Book of the Year 2014 wins my award for a vibrant, readable and enjoyable history of astronomy and a comprehensive overview of the current finds that suggest answers to the “ultimate” question, “Are we alone in the universe?”

Schaft begins by reminding us of old-world answers to that question. Then he takes us beyond Copernicus and his problems with a heliocentric solar system to the Kepler telescope and its exoplanet zoo.

What delighted me were Scharf’s forays into all the difficult sciences that serve as tools for studying the universe. These include statistics, constants necessary for life, relativity, chaos, the complex nature of life, biochemistry and its requirements, as well as Rare Earth geoastronomy, requirements for Earth Equivalence, and remote clues that suggest life elsewhere.

Scharf does not dance around the facts. Space is enormous, as are energy and time requirements for traveling to other stars. He does suggest that Earth orbits in a rather special solar system, special because most of our fellow planets sail around in orbits within 10% of circular. At the same time, our Milky Way galaxy is richly endowed with other solar systems, some unexpected, some thought impossible or surprisingly different, but overall not too different from computer models of possible varieties.

The author charges ahead in covering all the possibilities for finding an answer to the big question. In the end, he stays true to his realism when suggesting two choices we will have to make, if we do find evidence of life elsewhere in the Milky Way galaxy. I heartily recommend this book if you have ever wondered who we are and where we seem to be.