The Adler Planetarium - It was August 15,1977, in Ohio when a 72 second radio signal ⚡️ was detected at Ohio State University Radio Observatory. The Big Ear radio #telescope—which picked up
![Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check](https://africacheck.org/sites/default/files/2019/12/COMETDONE.png)
Yes, mysterious radio signal from space detected in 1977 – but probably caused by comet - Africa Check
![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. - iFunny Brazil 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. - iFunny Brazil](https://imgb.ifunny.co/images/4b3abb3b8ebffe4da77f9c78777f271151fe4805d16fa42f9fa73690d38a4385_1.jpg)