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“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. Subjects include: What if the Earth had two Moons?; What if the Earth were the moon of a massive planet?; What if the Earth orbited a less massive sun?; What if the Earth had a thicker crust?; What if the Moon orbited the Earth in the opposite direction?; What if the Earth had two Suns?; What if the Earth had a twin orbiting on the opposite side of the Sun?; What if the Andromeda Galaxy collides with the Milky Way?;  What if the Earth formed closer to the center of our galaxy?; What if the Earth formed in the distant future?; tons more. Published at $15.99, our price: $9.95.

WHAT IF THE EARTH HAD TWO MOONS? And Nine Other Thought-Provoking Speculations on the Solar System by Neil F. Comins 288 pages. 6x8 Paperback. Illustrated. Index.  

List Price: $15.99
Price: $9.95
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