Radicaly different doesn't automaticly mean "from outer space"
and if it where ailen, it would have to be adapted for space travel, be fit enought to survie entry into this planet, and also able to live and reproduce in the upper atmosphere.
but it if where "earth-home" it would just have had to get up there and could slowy adpat
and don't forgot that our planet has many many different types of sepicies, I belive the true test will be to look at its DNA
and for the love of god don't nuke it!!!
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Radicaly different doesn't automaticly mean "from outer space" and if it where ailen, it would have to be adapted for space travel, be fit enought to survie entry into this planet, and also able to live and reproduce in the upper atmosphere. but it if where "earth-home" it would just have had to get up there and could slowy adpat and don't forgot that our planet has many many different types of sepicies, I belive the true test will be to look at its DNA and for the love of god don't nuke it!!!