Assertion: crick's idea | /r/CapableOf | direct panspermia
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Source sentences:
text: A number of publications since 1979 have proposed the idea that directed panspermia could be demonstrated to be the origin of all life on Earth if a distinctive 'signature' message were found, deliberately implanted into either the genome or the genetic code of the first microorganisms by our hypothetical progenitor.
text: Crick has refined this idea to directed panspermia.