If ET Wanted to Communicate, How Would We Say Hello? Part 3

For the last part of this series I'll explore whether it' possible we've already received communication from extraterrestrials. Then I'll dive into the bits on how I created the digital image and audio that included the encoded message from the NSA article "Communication with Extraterrestrial Intelligence".

According to Wikipedia there have been twelve attempts at interstellar radio communication. Some have been more serious than others, but the article states that "seven messages have targeted stars between 20 and 69 light-years from the Earth. The exception is the Arecibo message, which targeted globular cluster M13, approximately 24,000 light-years away. The first message to reach its destination will be A Message From Earth, which should reach the Gliese 581 planetary system in Libra in 2029."