The original post: /r/todayilearned by /u/UsefulEngine1 on 2025-02-21 21:47:38.

Original Title: TIL that on the Ides of March 1953 there was an attempt to contact extraterrestrials via mass telepathic transmission of a welcome message. Later the message became the basis for a song by the group Klaatu which was then covered by pop group The Carpenters