On August 15, 1977, the Big Ear radio telescope on the campus of Ohio State University recorded a 72-second narrowband signal onto a paper tape. Several days later, Jerry Ehman, an astronomer at the university, studied the tape and found the signal so unusual that he scrawled the word Wow! next to the data points. Since that time, the signal has been discussed at great length in the astronomy community, but nobody has been able to explain its origin. The researchers focused their efforts on that star system using two telescopes, the Green Bank Telescope and the Allen Telescope Array....
