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Old 31st January 2014 | 13:40
  #9 (permalink)  
Heston
 
Joined: Sep 2011
Posts: 639
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From: Mare Imbrium
...and a metre is
the length of the path travelled by light in vacuum during a time interval of 1/299 792 458 of a second


There are no stupid questions, btw. Only stupid answers
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