posted on Sep, 11 2013 @ 08:31 AM
reply to post by purplemer
Phage has posted other sources that I'm sure will have the right info, but to the point, the theory is that one of the ingredients necessary for
creating an environment where life could begin may (note, may) have hit earth through meteorite activity. This is not the same as saying 'life' came
from Mars, but an element necessary for sparking the whole thing off may have.
Not sure how everyone feels about that, but to me it seems to show how unlikely the spontaneous appearance of life on any planet really is - seems
luck plays an awfully big part in the whole scheme of things.