Alien Contact : Outer Space

This documentary Details the Arecibo Message sent in 1974 by Carl Sagan, aimed at a star cluster with information about humanity and Earth, described as the most powerful broadcast directed towards extraterrestrial life aswell as Detailed examination of the Wow! signal received in 1977 at Ohio State University, considered one of the best candidates for extraterrestrial communication. The signal lasted 72 seconds, never detected again, leading to various speculations regarding its source.