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RE: Todays Date In The String Of Evolution Of Humankind

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Posted by on March 27, 2000 17:33:31 UTC

If one out of a set of twins embarks on a journey at 9/10`s the speed of light to alpha/beta centauri he will be about 9 1/2 yrs old on his return to earth; his brother would be 120 yrs old. How old is a photon that eminated from a/b centauri 120 yrs ago?

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