What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System

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Macmillan, Mar 30, 2010 - Science - 288 pages
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“What if?” questions stimulate people to think in new ways, to refresh old ideas, and to make new discoveries. In What If the Earth Had Two Moons, Neil Comins leads us on a fascinating ten-world journey as we explore what our planet would be like under alternative astronomical conditions. In each case, the Earth would be different, often in surprising ways.

The title chapter, for example, gives us a second moon orbiting closer to Earth than the one we have now. The night sky is a lot brighter, but that won’t last forever. Eventually the moons collide, with one extra-massive moon emerging after a period during which Earth sports a Saturn-like ring.

This and nine and other speculative essays provide us with insights into the Earth as it exists today, while shedding new light on the burgeoning search for life on planets orbiting other stars. 

Appealing to adult and young adult readers alike, this book follows on the author’s previous bestseller, What If the Moon Didn’t Exist?, with completely new scenarios backed by the latest astronomical research.

 

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User Review  - DanThompson - LibraryThing

This is a collection of ten what-if scenarios for alternate earths in various solar systems. It includes the title scenario of Earth having two moons, how we would have gotten them, their effects on ... Read full review

Contents

Body
1
Back Matter
273
Index
275
Back Flap
297
Back Cover
298
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About the author (2010)

Neil F. Comins is a professor of physics and astronomy at the University of Maine and author of popular scientific books, articles, and textbooks. He earned a Bachelor of Science degree from Cornell and a Ph.D. in astrophysics from University College, Cardiff, Wales.  

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