Astronotes Armagh Planetarium's Stellar Blog! ... Telescopes and Observatories . Space Flight . ... August 15, 1977 may be etched into the minds of some people, it was the night before Elvis Presley died, but it was also the night that a signal from space was detected.€а Uncovered by Jerry Ehman, the WOW signal was a strong narrowband radio signal.€а Ehman was part of the SETI (Search for Extraterrestrial Intelligence) project working at the Big Ear radio telescope at Ohio, USA at the time. ...