On this day in space! Aug. 15, 1977: Mysterious 'Wow!' Signal boosts search for E.T.

On August 15, 1977, a significant event occurred in the ongoing pursuit of extraterrestrial intelligence. Astronomers at Ohio State University utilized the Big Ear radio telescope located near Cambridge, Ohio, to detect an unusual burst of energy. This pulse, dubbed the “Wow!” signal, registered as a strong narrowband peak at 1420 MHz – precisely the frequency of hydrogen emission. The signal lasted for approximately 72 seconds and was initially considered highly promising due to its strength and unique characteristics. Despite extensive subsequent investigations by numerous research teams over decades, the origin of the ‘Wow!’ signal remains unidentified, continuing to fuel speculation about potential intelligent life beyond Earth.