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What If the Moon Didn't Exist?: Voyages to Earths That Might Have Been
"Seductively cunning. . . . All these 'what-ifs' have the cumulative effect of making us excruciatingly aware of what a special and precarious place we inhabit--and how easy it would have been for it to be otherwise."--Washington Post
Paperback, 336 pages
Published January 1st 1995 by Perennial
(first published November 1993)
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It took me like 5 years to finish this thing, but its great. Basically hard scifi without any plot. Its an astrophysicist rambling about what earth might be like if there was no moon, or if the sun was really massive, or if the earth was really tiny, or if a black hole passed close by etc. Very straightforward concept. The latter chapters are less interesting, but it still gets 5 stars. This book is useful for communicating that Earth is not specially built for humans. If earth was different, li ...more
This was an interesting presentation of a variety of alternate Earths. The author explains the effects on evolution on Earth based on slight changes: removing the moon; moving the moon closer; increasing Earth's mass; increasing our sun's mass, etc. The explanations were clear even to a novice, such as myself.
Apr 03, 2011 Patty Jansen rated it really liked it · review of another edition
Written in non-technical language, this book explores a number of different scenarios by which life on Earth would be possible, but would be profoundly different from the way we know it.