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67.166.65.195
Since: Dec, 1969
Bananaquit
Since: Jan, 2001
2011-09-11 23:08:34
Could this be The National Geographic Picture Atlas of Our Universe? It definitely had a section on hypothetical extraterrestrial life, the relevant pages scanned and reposted here
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Twiddler
MOD
(On A Trope Odyssey)
Twiddler
MOD
(On A Trope Odyssey)
FloydPinkerton
Since: Nov, 2010

This is a book I read as a kid about the possibilities of extraterrestrial life. One section of the book had pictures and descriptions for various hypothetical other planets, like a low-gravity one, a high gravity one, a jungle one, an ice one, and a gas planet where life floated around in the atmosphere. The illustration from the latter was used for the cover, showing a whale/manta ray type creature on a bluish background.