Neil F. Comins is a professor of physics and astronomy at the University of Maine and has written a number of popular books including: The Hazards of Space Travel: A Tourist’s Guide and What if the Moon Didn’t Exist? Voyages to Earths That Might Have Been. In his new book, What if the Earth Had Two Moons, he gives us nine alternative realities, including what our world would be like if we had two moons. At the beginning of each hypothesis, Comins has a little fun with a short fictional reality existing in the condition he is about to describe, then he analyzes it from a scientific and then sociological perspective. While he tends to keep everything dry and scientific, and there seems to be a lacking in exploring the alternate world (perhaps that is a different book), Comins nevertheless is thorough and detailed, taking on what ifs like: “What if the Earth’s Crust Were Thicker,” “What if the Sun Were Less Massive,” “What if the Earth had Two Suns,” as well as many others.
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Originally written on May 18 2010 ©Alex C. Telander.
Originally published in the Sacramento Book Review.