Arecibo message - Signal to alien life sent in 1974

The Arecibo message is a message from Earth to possible aliens in the form of a radio wave signal. She was once on 16 November 1974 at 1:00 clock AST (Atlantic Standard Time) starting from the Arecibo Observatory sent, the world's second largest radio telescope near Arecibo, Puerto Rico. As the main author of the message is an astronomer and astrophysicist Frank Drake.

0 0 0 1 1 1 1 00 00 00

0 1 1 0 0 1 1 00 00 10

1 0 1 0 1 0 1 01 11 01

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In 2001, appeared on a cornfield in the UK two grain pictograms, one of which had a resemblance to the Arecibo message.

The globular cluster Messier 13 is located 22 800 light years. The radio signal thus requires 22.8 thousand years for the way a response to the 22.8 thousand years back, if she is also bound by the speed of light. In this case the Earth could respond at the earliest reached in about 45 600 years.