Back in 1977, a mysterious signal reached Earth — lasting only seventy-two seconds. Detected by Ohio State’s Big Ear Radio Observatory while scanning the constellation Sagittarius, the signal was unlike anything ever heard before. Astronomers called it the Wow! signal. It appeared on the same hydrogen frequency scientists use in the search for extraterrestrial intelligence — 1420 MHz — and has never been detected again. Nearly fifty years later, we still don’t know who, or what, sent it. #space
Back in 1977, a mysterious signal reached Earth — lasting only seve…
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🚨 The Wow Signal: The 72-Second Message That Still Haunts Science 👁️📡 On August 15, 1977, a routine scan of deep space turned into one of the most baffling moments in human history. The Big Ear Radio Telescope at Ohio State University detected a perfect, narrowband transmission — so sharp, so deliberate — that astronomer Jerry Ehman circled the data printout and wrote a single stunned word beside it: “Wow!” 📡 The signal lasted exactly 72 seconds, originating from the direction of Sagittarius
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In 1977, astronomer Jerry Ehman was analyzing data from the Big Ear Radio Telescope in Ohio when he noticed something extraordinary — a 72-second radio signal unlike anything ever recorded. It came from the direction of the Sagittarius constellation, clear and powerful, at a frequency often linked to hydrogen — the building block of life. Astonished, Ehman circled the reading on the printout and scribbled one word in the margin: “Wow!” That single reaction gave the mysterious signal its now-famo
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