4. The Wow Signal
On August 15, 1977, the Big Ear Radio Telescope in Ohio intercepted a powerful and anomalous narrowband radio signal, known as the Wow Signal. This extraordinary event, marked by its intensity and frequency, raised the possibility of extraterrestrial communication. Despite extensive efforts, the exact source of the signal within the M55 star cluster remains unknown. The Wow Signal challenges our understanding of cosmic phenomena and fuels speculation about intelligent life beyond Earth.
