Re: Have aliens visited earth?
To everyone who hasn't seen Cosmos,
it's a brilliant mini series from Carl Sagan done 25 some odd years ago. I recommend seeing all 13 episodes, but there is one in particular, "Encyclopedia Galactica" I believe, that deals with this subject. Even today, it's extremely informative and a great watch. This episode even goes into the probability theories.
Check it out,
Ross
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