Extraterrestrial Life Panspermia
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See also:
Cosmic Ancestry: The Modern Version of Panspermia - The Cosmic Ancestry hypothesis - about which this site has a large amount of information - treats all of evolution, not just the origin of life on Earth, as due to interaction with cosmic microorganisms.
Panspermia - Descriptive entry in The Encyclopedia of Astrobiology, Astronomy, and Spaceflight.
Panspermia Revisited - Short scientific article by John R. Gribbin. "Spreading of life-bearing spores across the Galaxy (panspermia) may be easier than is usually acknowledged."
Panspermia: Society for Life in Space (SOLIS) Society - Panspermia overview and technical papers.
Cosmic Ancestry: The Modern Version of Panspermia - Transcript to an online chat with panspermia theorist Brig Klyce. (June 19, 2003)
Are We All Aliens? The New Case for Panspermia - Interviews with experts on panspermia and in other fields shows rising interest in the idea. (October 30, 2000) Help build the largest human-edited directory on the web.