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Title:
Directed panspermia
Authors:
Crick, F. H. C.; Orgel, L. E.
Affiliation:
AA(Medical Research Council, Laboratory of Molecular Biology, Hills Road, Cambridge, England), AB(The Salk Institute for Biological Studies, P.O. Box 1809, San Diego, California 92112, USA)
Publication:
Icarus, Volume 19, Issue 3, p. 341-346. (Icarus Homepage)
Publication Date:
07/1973
Origin:
AP; ELSEVIER
Abstract Copyright:
(c) 1973 Elsevier Science B.V. All rights reserved.
DOI:
10.1016/0019-1035(73)90110-3
Bibliographic Code:
1973Icar...19..341C

Abstract

It now seems unlikely that extraterrestrial living organisms could have reached the earth either as spores driven by the radiation pressure from another star or as living organisms imbedded in a meteorite. As an alternative to these nineteenth-century mechanisms, we have considered Directed Panspermia, the theory that organisms were deliberately transmitted to the earth by intelligent beings on another planet. We conclude that it is possible that life reached the earth in this way, but that the scientific evidence is inadequate at the present time to say anything about the probability. We draw attention to the kinds of evidence that might throw additional light on the topic.
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