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Furthermore, [[Francis Crick]] and [[Leslie Orgel]], in 1973,<ref>Crick, F. H. C., and Orgel, L. E. "Directed Panspermia," ''Icarus'', 19, 341 (1973).</ref> openly speculated on a form of exogenesis called [[Panspermia#Directed panspermia|directed panspermia]], in which such an extraterrestrial nation-state fired a brace of missiles, each laden with [[bacteria]] and/or [[blue-green algae]], in all directions. One such  missile crashed on earth, and we are its by-product, as it were, their theory states. For a detailed discussion on the logical weaknesses of such a position, see the main article on [[Panspermia]].
 
Furthermore, [[Francis Crick]] and [[Leslie Orgel]], in 1973,<ref>Crick, F. H. C., and Orgel, L. E. "Directed Panspermia," ''Icarus'', 19, 341 (1973).</ref> openly speculated on a form of exogenesis called [[Panspermia#Directed panspermia|directed panspermia]], in which such an extraterrestrial nation-state fired a brace of missiles, each laden with [[bacteria]] and/or [[blue-green algae]], in all directions. One such  missile crashed on earth, and we are its by-product, as it were, their theory states. For a detailed discussion on the logical weaknesses of such a position, see the main article on [[Panspermia]].
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Politicians (among them, former [[President of the United States]] [[Jimmy Carter]]) have openly speculated on the existence of extraterrestrial nation-states.<ref>Carter claims to have witnessed an unidentified flying object in 1969; he remains the only U.S. President to have formally reported a [[UFO]]. He filed a report with the International UFO Bureau in [[Oklahoma City]] after a request from that organization.[http://www.presidentialufo.com/carter_ufo_report.htm]  See [[Jimmy Carter]].</ref> For further details, see the main article on [[Exotheology]].
    
== Extraterrestrial Life in Science Fiction ==
 
== Extraterrestrial Life in Science Fiction ==
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