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M13:Can You decode this?

  1. Dec 4, 2004 #1
    [​IMG]
    This was the picturesque message beamed to the M13 cluster by the Arecibo Observatory in 1974. Even having a knowledge about earthly things, I fail to recognise most of the information depicted. How do they believe that alien intelligent beings some 22,000 lightyears away could decode such information and communicate with us? :confused:
     
  2. jcsd
  3. Dec 4, 2004 #2
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