In 1977 we received a radio signal from space that lasted 72 seconds. To this day, we still don’t know where it came from.

Another great reason to believe we aren’t alone in the universe guys. On August 14, 1977, the Big Ear radio telescope at Ohio State University picked up an unusual signal at 1420 megahertz. Big-Ear-ObservatoryThe signal lasted 72 seconds and came from the direction of the Sagittarius constellation. Its intensity was so strong that is managed to eclipse the background noises.

The nearest star in that direction is approximately 220 million light years away. In other words, the signal originated from an empty spot in space. The astronomer on duty, Dr. Jerry R. Ehman, was so shocked that he circled the signal on the data sheet and wrote ‘Wow!’ While unmodulated — lacking explicit information — the Wow Signal was conspicuous because it was narrow-band and powerful. It has never been heard again despite subsequent searches.


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