Astronomers have sent a radio message to a neighboring star system — one of the closest known to contain a potentially habitable planet — and it’s nearby enough that we could receive a reply in less than 25 years. The target star is GJ 273, also known as Luyten’s star, a red dwarf in the northern constellation of Canis Minor, just 12 light years away.



This missive to the stars was sent on the anniversary of the “Arecibo message,” a radio transmission beamed toward a distant star cluster in 1974 from the Arecibo radio telescope in Puerto Rico. The Arecibo message contained information on the planets of our solar system, the structure of DNA, a cartoon-like picture of what a human being looks like, and other basic information about the earth and its inhabitants.

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Source: [H]ardOCP – We Just Sent a Message to Try to Talk to Aliens on Another World