Frank Drake’s Arecibo message is often credited as the first case of using a radio telescope to send a message to extraterrestrial intelligence (METI). But was it? In this talk, I will delve into historical records to examine possible attempts predating the Arecibo message, shedding light on the complexity of our early endeavors to reach out to potential extraterrestrial civilizations. I will also cover other lesser-known examples of METI in the 20th century and put into context some of the early controversy surrounding METI.
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