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From: KFL@MIT-MC@sri-unix.UUCP
Newsgroups: net.space
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Message-ID: <3484@sri-arpa.UUCP>
Date: Tue, 26-Jul-83 23:11:00 EDT
Article-I.D.: sri-arpa.3484
Posted: Tue Jul 26 23:11:00 1983
Date-Received: Fri, 29-Jul-83 05:58:49 EDT
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From:  Keith F. Lynch 

        Date: 25 July 1983 21:19 EDT
        From: bruc@mit-ml
                One interesting speculation that I had about this -- if there
        is life on Mars, it's quite possible it came from Earth. Since
        material from Mars is believed to have traveled to the earth and
        landed in Antarctica (by being blasted from Mars by a meteor impact
        and eventually intersecting the earth's orbit), the reverse is also
        possible. I wonder if the spores of ancient microorganisms would be
        capable of surviving the voyage (suitably encased or shielded by
        rock)..
  Or perhaps life on Earth got started from a meteor from Mars or
elsewhere.  Maybe life in the universe only started once and then
drifted to Earth and other planets.
                                                                ...Keith