Comments by "Bob Bart" (@bobbart4198) on "Cool Worlds"
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... If there are " Aliens " - a la the X-Files variety, instead of just bacteria, viruses and maybe eukaryotes, and IF faster-than-light, space-folding, Einsteinian General Relativity type space travel is even possible ... WHY would the come here ?
Earth is in a relatively minor spiral arm of the Milky Way galaxy, nowhere near the core of the galaxy - which may explain why life survived here at all, in a mildly radioactive region, where middle-aged stars last long enough to mature and are small enough to have modest mass and the possibility of terrestrial, rocky planets - far enough out from the star to host a moderate climate and lucky enough to have received water-bearing comet & asteroid hits and sufficient gravity to maintain enough CO2 to retain atmospheric-warming and oxygen.
Primitive chemical reactions occurred often enough to form complex molecules and give rise to early forms of amino acids, proteins, RNA & a very basic form of self-replicating life.
The position of our planet makes even looking for us unlikely, but IF some of our radio signals were received - which, because THEY are limited to the speed of light (or 99.999 % of the speed of light), it would take 4.25 (minimum) years of travel through space to reach us from Proxima Centauri - which may not host intelligent life - or ANY life, for that matter ...
So, EVEN if some radio wave has been detected AND interpreted by the unlikely example of intelligent life AND that life-form has achieve faster-than-light travel - or spent a LOT of resources on multi-generation travel - or just fully automated " robot " vehicles ... I must ask again - WHY would they come here ?
IF they've managed to do ALL of those things, and - being intelligent enough to have read our radio signals AND determined what human beings are REALLY all about - would they be FOOLISH enough to MAKE CONTACT WITH US ??????????? :face-fuchsia-tongue-out::face-orange-raised-eyebrow::face-turquoise-covering-eyes:
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