Books tagged: physical constraints of intelligent life

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How Alien Would Aliens Be?
By
Price: $2.99 USD. Words: 68,710. Language: English. Published: August 14, 2011. Category: Nonfiction » Science and Nature » Cosmos
How alien would aliens be? Like us, aliens would be constrained by the physical world. That implies that they will not be all that different from us, perhaps half to twice as big as we are. They will depend on vision and hearing as we do and they will live on a planet much like ours. Do they even exist? The odds are not good. We may be the only intelligent life in the universe.