The Arecibo message is an interstellar radio message carrying basic information about humanity and Earth that was sent to the globular cluster Messier 13 in ...
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The message consists of 1679 bits, arranged into 73 lines of 23 characters per line (these are both prime numbers, and may help the aliens decode the message).
It's the 25th anniversary of Earth's first attempt to phone E.T.
news.cornell.edu › stories › 1999/11
The real purpose of the message was to call attention to the tremendous power of the radar transmitter newly installed at Arecibo and the ability of the ...
On November 16th, 1974, the Arecibo Radio Telescope in Puerto Rico sent out the strongest signal ever sent into space. The broadcast's goal was to showcase ...