Exobiology 31
Fermi's Paradox 15
Life on Mars 15
Panspermia 6
SETI 66
| | Extrasolar Planets - Astronomy, Science 39
UFOs - Paranormal, Society 284
 The Planetary SocietyThe Planetary Society
 A nonprofit organization devoted to the exploration of the solar system and the search for extraterrestrial life.
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The Rise and Fall of Star Faring Civilizations in Our Own GalaxyThe Rise and Fall of Star Faring Civilizations in Our Own Galaxy
 Speculation, based on the Drake Equation, regarding the existence and composition of alien civilizations.
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Search for ET!Search for ET!
 Interactive Flash tutorial exploring the possibility of and search for life on other worlds.
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