History | Ancient History on Instagram: "The “Wow! Signal,” detected on August 15, 1977, remains one of the most compelling mysteries in the search for extraterrestrial intelligence. Recorded by astronomer Jerry R. Ehman using Ohio State University’s Big Ear radio telescope, the signal was a strong, narrowband radio transmission lasting seventy-two seconds and originating from the constellation Sagittarius, near the Chi Sagittarii star group. It stood out dramatically against the usual backgroun