Paranormal researchers have been looking for evidence of intelligent life from outer space hoping to convince skeptics that aliens do exist. Likewise, scientists have been also looking for radio signals above in their search for extraterrestrial intelligence. In 1977, scientists working at the Ohio State University’s Big Ear radio observatory detected a record of signal coming from outer space. To date, the signal remains a mystery as an expert says that the signal has never been satisfactorily explained as a natural phenomenon.
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