Wow! (no, not the one you are thinking about)

The Wow! signal was a strong narrowband radio signal detected by Dr. Jerry R. Ehman on August 15, 1977, while working on a SETI project at The Big Ear radio telescope of Ohio State University. Amazed at how closely the signal matched the expected signature of an interstellar signal in the antenna used, Ehman circled the signal on the computer printout and wrote the comment “Wow!” on its side.

Both the length of the Wow! signal and the shape of the intensity graph may correspond to a possible extraterrestrial origin.

(via FreshPhotons)