received, called the wow signal. take a look. >> on august 16th, 1977, a radio telescope in ohio picked up a signal that became famous. the signal was a steady source of radio waves, just the kind an alien race might send, because it stands out from the radio static that fills the universe. a computer recorded the signal as six letters and numbers. astronomer jeremy erman saw the data and wrote one word in the margin. >> larry: this is a remarkable, remarkable entertaining feature that will air on discovery sunday. john smithson and ben buoy are the executive producers of "into the universe" with steven hawking. this would be an opinion, ben.