Attention Deficit Disorder Prosthetic Memory Program

Wow! Signal

ADDPMP446
Wow! Signal - © Attention Deficit Disorder Prosthetic Memory Program

The Wow! signal was a strong narrowband radio signal received on August 15, 1977, by Ohio State University’s Big Ear radio telescope in the United States, then used to support the search for extraterrestrial intelligence. The signal appeared to come from the direction of the constellation Sagittarius and bore the expected hallmarks of extraterrestrial origin.

Astronomer Jerry R. Ehman discovered the anomaly a few days later while reviewing the recorded data. He was so impressed by the result that he circled the reading on the computer printout, “6EQUJ5”, and wrote the comment “Wow!” on its side, leading to the event’s widely used name.

The entire signal sequence lasted for the full 72-second window during which Big Ear was able to observe it, but has not been detected since, despite several subsequent attempts by Ehman and others. Many hypotheses have been advanced on the origin of the emission, including natural and human-made sources, but none of them adequately explain the signal.

Although the Wow! signal had no detectable modulation—a technique used to transmit information over radio waves—it remains the strongest candidate for an alien radio transmission ever detected.

The Decline of Western Civilization - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP396
The Decline of Western Civilization
Oro by Cizia Zykë - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP177
Oro by Cizia Zykë
Blue-Ringed Octopus - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP436
Blue-Ringed Octopus
Pangea Proxima - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP246
Pangea Proxima
The Iceman - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP192
The Iceman
South-Up Map Orientation - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP432
South-Up Map Orientation
Hyperart Thomasson - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP549
Hyperart Thomasson
Big Dumb Object - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP500
Big Dumb Object
Morteza Hannaneh - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP290
Morteza Hannaneh
The Anarchist Cookbook - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP390
The Anarchist Cookbook
Shuttle Endeavor in the streets of Los Angeles - © Attention Deficit Disorder Prosthetic Memory Program
ADDPMP241
Shuttle Endeavor in the streets of Los Angeles

You are using an outdated browser.
Please upgrade your browser to improve your experience.