#47: The Wow! Signal | Communiqués of Extraterrestrial Origin

<p>On August 15, 1977, astronomers at the Big Ear observatory at Ohio State University captured what appeared to be an artificial radio transmission coming from the direction of the Sagittarius constellation. What is the backstory on this alleged extraterrestrial signal (known as the Wow! Signal)? What made astronomers that detected it so sure that it was not just static or noise coming from natural phenomenon? And more importantly, has ever been detected again? </p>