What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been

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What if we had two moons? Or if the earth were less dense, or if our solar system were younger? Comins analyzes how differences would affect the plant, animal, and human life on our planet. A fascinating examination of the earth's place in the solar system--and just how fragile that place is.

What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been 2012, iUniverse

ISBN-13: 9781475930948

Trade paperback

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What If the Moon Didn't Exist: Voyages to Earths That Might Have Been 1993, HarperCollins Publishers, New York, NY

ISBN-13: 9780060168643

Hardcover

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