เสียงที่ใช้ร่วมกัน

Scientists once detected a powerful signal coming from deep space. It wasn’t random noise.It had a pattern.Strong… clear and unlike anything detected before.For a moment it felt like something was trying to communicate. Then just as suddenly as it appeared it was gone. Scientists tried to track it again. They pointed telescopes waited searched. But the signal never returned.To this day no one knows where it came from or what it meant.”