ogon writes:
If once there was no biological life on Earth, and then there was biological life on Earth, this suggests to me that there has to be a beginning to life on Earth.
Not necessarily, considering the complex organic molecules that can form in space itself, and the possibility of extraterrestrial introduction of already living forms to an appropriate environment, life did not absolutely have to start on earth itself. The theory of life originating extraterrestrially is otherwise known as
Panspermia
Not that I believe that is how it happened, but IMO as a wild guess, it has more speculative evidence going for it than that for Bigfoot.
ABE - this is not a disagreement or even a correction as panspermia would constitute "a beginning to life on Earth" just a mere conversation point.
Edited by anglagard, : Clarity and title
Edited by anglagard, : No reason given.
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