The Wow! Signal: 72 Seconds That Changed Everything
A powerful radio signal from deep space defied all explanation for decades. Was it alien contact or cosmic coincidence?
On August 15, 1977, the Big Ear Radio Observatory detected an anomalous narrowband signal lasting approximately 72 seconds. The signal originated from coordinates RA 19h 25m 12s ± 10s, Dec -26° 57' ± 20'. Signal intensity peaked at 30 standard deviations above background noise. The transmission frequency of 1420.456 MHz corresponds to the hydrogen line, a frequency of significant interest in SETI research. Multiple follow-up observations have failed to detect repeat transmissions from the source location.
- Extraterrestrial Intelligence
- Comet Hydrogen Cloud
- Classified Military Satellite
- Interstellar Scintillation
- Terrestrial Interference
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