![]() Thus, the 72 seconds of audio is now permanently missing, with the printout being the signal's only remnants. As noted by the Big Ear Radio Observatory memorial site, the telescope lacked audio recording equipment at the time it detected the signal. Ultimately, no audio tape of the signal exists. Big Ear itself no longer exists, having been demolished in 1998 after its search was deemed by Congress to be a waste of taxpayer funds. As of the present day, the Wow! signal continues to both be unreplicable and seemingly unsolvable. Other hypotheses include the signal reflecting the hydrogen clouds of the 266P/Christensen and 335P/Gibbs comets, to a sun-like star within Sagittarius. Its origins are a subject of intense debate aside from the possibility that it may be an extra-terrestrial transmission, some scientists have put across alternative theories, including the idea that space debris merely reflected a signal that ultimately originated from Earth. To date, the Wow! signal has never been replicated, despite numerous attempts in the 1980s and 1990s. He was amazed by the signal's anomalous nature, writing "Wow!" next to the printout. ![]() Ī few days later, astronomer and SETI volunteer Ehman analysed the data collected by Big Ear on 15th August. Therefore, the signal's actual duration remains unknown. The signal's recording occurred for 72 seconds before Earth's rotation moved Big Ear's horn to a different area of the sky. Although it is unclear which horn actually found the signal, it picked up a signal with a signal-to-noise ratio peaking at 30, listed in the data as 6EQUJ5. Big Ear utilised two feed horns to collect data from two different areas of Chi Sagittarii. However, this changed on 15th August 1977, when it began searching the Chi Sagittarii stars within the Sagittarius constellation. Previously, very little of interest had been noted by the telescope. ![]() ![]() Four years prior to the Wow! signal's recording, Big Ear had begun searching for possible extra-terrestrial radio signals in a NASA-backed volunteer effort. ![]()
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