The Arecibo Message was sent into space on November 16, 1974, from Puerto Rico. It was a radio signal designed to show intelligent life outside Earth what humans are like. The message included simple information about math, science, humans, and our planet. It was more a symbol of hope than a real contact attempt.

• Selected Regions Only
• First Release Oct 25, 2023
• Nov 13 → Nov 16 Annually
• https://en.wikipedia.org/wiki/Arecibo_message