09-21-2018, 12:47 AM
The mathematically probability that an Alien civilization who had/would visit us is 50,000 years more advanced..
mathematically probability that an Alien civilization
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mathematically probability that an Alien civilization - by 727Sky - 09-21-2018, 12:47 AM
RE: mathematically probability that an Alien civilization - by guohua - 09-21-2018, 04:10 AM
RE: mathematically probability that an Alien civilization - by Mystic Wanderer - 09-21-2018, 08:38 PM
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