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Once upon a time the earth was flat (or so we thought) ...
Then we were sure the heavens revolved around the earth ...
Telescopes were invented, and we realize we are in a galaxy, which was considered our universe !
Now we realise it is one of billions !
Planets around others stars ? Sci-fi surely, yet to date we have discovered over 160.
I believe in my lifetime we will prove the existance of life (biomass) on other planets. IMHO
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