alien signal

The tag 'alien signal' on WindowsForum.com covers discussions about radio signals initially thought to be from extraterrestrial sources but later identified as terrestrial in origin. One thread highlights a case where a signal detected by the SETI community was found to be from Earth, drawing a comparison to phantom phone vibrations. This tag is relevant for users interested in astronomy, space science, and the search for extraterrestrial intelligence, particularly the challenges of distinguishing cosmic signals from human-made interference.