Summary:
- The "Wow! Signal" was a 72-second radio signal detected by the Big Ear radio telescope at Ohio State University in 1977, which had characteristics consistent with an extraterrestrial transmission.
- The signal has never been conclusively explained, and remains one of the most tantalizing and enduring mysteries in the search for extraterrestrial intelligence (SETI).
- While some scientists believe the Wow! Signal was a natural phenomenon, such as a passing comet or asteroid, others argue that it could have been a genuine signal from an advanced alien civilization, making it a significant event in the history of SETI research.