TIL 50yrs ago the Arecibo Message was sent into space to communicate human existence to potential extraterrestrial life.

https://en.wikipedia.org/wiki/Arecibo_message
#til #todayilearned
https://www.reddit.com/r/todayilearned/comments/1gt3ies/til_50yrs_ago_the_arecibo_message_was_sent_into/