| | 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]]. |