On August 20, 1974, scientists at Cornell Universi... ...sity and the National Science Foundation used the radio telescope in Arecibo, Puerto Rico to beam a message into sp... ...ed in 2001, in the form of a crop circle near the Chilbolton radio telescope , in Hampshire, UK.Â...
https://www.neatorama.com/2009/09/21/could-you-decipher-the-arecibo-message/
Could You Decipher the Arecibo Message?...
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