On Aug. 15, 1977, astronomers using Ohio State University's Big Ear radio telescope detected the famous "Wow!" signal, which remains unexplained to this day.
On this day in space! Aug. 15, 1977: Mysterious 'Wow!' Signal boosts search for E.T.
SPACE.com - 15 Aug 2026 14:00
On Aug. 15, 1977, astronomers using Ohio State University's Big Ear radio telescope detected the famous "Wow!" signal, which remains unexplained to this day.
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