Âm thanh chia sẻ

In 1977, a strange signal was detected from deep space. It lasted for 72 seconds… And then it disappeared forever. Scientists called it the “Wow Signal.” Because of how powerful and unusual it was. Some believed it was a natural cosmic event. Others thought it could be something more. An att…

In 1977, a strange signal was detected from deep space. It lasted for 72 seconds… And then it disappeared forever. Scientists called it the “Wow Signal.” Because of how powerful and unusual it was. Some believed it was a natural cosmic event. Others thought it could be something more. An attempt to communicate. But no matter how many times they searched… The signal never returned. To this day… No one knows what sent it.