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In page Panspermia:

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In 1972, both abiogenesis and panspermia were seen as viable theories by different experts.[1] Given this, Crick and Orgel argued that experimental evidence required to validate one theory over the other was lacking.[2] That being said, evidence strongly in favor of abiogenesis over panspermia exists today[citation needed], whereas evidence for panspermia, particularly directed panspermia, is decidedly lacking.