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What If the Earth Had Two Moons?: And Nine Other Thought-Provoking Speculations on the Solar System
Paperback
Publisher Price: $22.99
ISBN13: 9780312673352
Publisher: St. Martin's Griffin
Published: Aug 2 2011
Pages: 304
Weight: 0.80
Height: 0.80 Width: 5.50 Depth: 8.40
Language: English
What if? questions have always stimulated people to think in new ways. What if the Earth Had Two Moons leads us on a fascinating 10 world journey exploring what the Earth would be like if conditions in the universe were slightly different. The answer: Earth would be different, often in ways that would surprise us. 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 not forever. Eventually the moons collide, with one more-massive moon emerging after a period during which Earth has a Saturn-like ring. The scenarios also shed new light on the burgeoning search for life on planets orbiting other stars.
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