Credit: Big Ear Radio Observatory and North American AstroPhysical Observatory (NAAPO).The Wow! Signal has captivated the imagination of scientists and the public alike since its detection in 1977.

In 1977, a mysterious 72-second space signal was detected. Was it aliens? Explore the Wow! Signal. In 1977, astronomers detected the Wow! Signal, a mysterious 72-second radio burst from deep space ...

The Wow! signal was a strong narrowband radio signal detected only once on August 15, 1977, by the Big Ear radio telescope. The signal lasted for the full 72-second window that Big Ear was able to ...