Home Today Years Ago August 15, 1977: Wow! Signal Received
August 15, 1977: Wow! Signal Received
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August 15, 1977: Wow! Signal Received

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Today in 1977, Ohio State University’s Big Ear radio telescope picked up an anomalous signal originating from the constellation of Sagittarius. 72 seconds of the signal was received, but no other attempts to find it again have been successful. Despite numerous hypotheses about its origin, none have been able to fully explain the signal. It is by and far the most compelling radio evidence of possible extraterrestrial life ever discovered.