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OTD in Space - Nov. 16: Arecibo Observatory Broadcasts Interstellar Message
On November 16, 1974, humans sent their first message to the stars in an attempt to contact extraterrestrials. They did this using what was then the largest radio telescope in the world, located at the Arecibo Observatory in Puerto Rico. A group of scientists led by Frank Drake and Carl Sagan sent their message to the M13 star cluster. The ...
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