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Alien organisms could hitch a ride on our spacecraft and contaminate Earth, scientists warn

Dec 9, 2020
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The two-way transfer of organisms, micro and macro, would be the "price" of colonizing other worlds. Evolution would be in-play despite any precautions put in place. There is an old saying "Fools rush in where angels fear to tread". Hopefully, H. Sapiens, or our replacement sub-species, will be able to manage any foolishness.
 

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