The Wow! Signal: NASA’s Biggest ‘We’re Not Alone’ Moment

In 1977, Ohio State's Big Ear telescope detected a powerful,

72-second radio burst. A whisper from deep space, an anomaly unlike anything seen before.

A true cosmic enigma. Labeled '6EQUJ5', this narrowband, strong signal stunned

astronomer Jerry Ehman, who simply wrote 'Wow!' next to it. Its characteristics strongly

suggested an intelligent, extraterrestrial origin. Despite decades of searching, the Wow!

Signal was never detected again. Its source remains unknown. A powerful echo,

NASA’s biggest 'we’re not alone' moment, inspiring the ongoing search.