In 1977, a powerful radio signal from deep space, known as the Wow! Signal, stunned scientists.

Lasting 72 seconds, it originated from the constellation Sagittarius, but it was never detected again.

Was it an alien transmission or just a cosmic coincidence? Decades later, the mystery remains unsolved, fueling speculation and curiosity.

With no repeat signals, we’re left wondering: did we miss our one chance at first contact?