The Last Arecibo Message

The Arecibo Message was a brief binary-encoded message sent into space from the Arecibo Observatory in 1974 to demonstrate human technological achievement. In mid-2020, the Arecibo Observatory selected a new message designed by students. The Arecibo Telescope collapsed in late 2020, and the message was never sent.

The Planetary Habitability Laboratory (PHL) will commemorate next November 2024 the 50th anniversary of the Arecibo Message with the event "The Last Arecibo Message" — a celebration of the legacy of the Arecibo Observatory and a look toward the future of interstellar communication.

We invite global organizations to participate by creating activities or educational resources that explore the search for intelligent life and the feasibility of communication with extraterrestrial civilizations.

Things to Commemorate in November Related to the Search for Extraterrestrial Intelligence in the Universe:

• Arecibo Observatory's 61st Anniversary (Nov 1)

• First SETI Conference's 63rd Anniversary (Nov 1-2)

• Interstellar's 10th Anniversary (Nov 5)

• Carl Sagan's 90th Birthday (Nov 9)

• First Media Mention of the Wow! Signal (Nov 14)

• Arecibo Message's 50th Anniversary (Nov 16)

• SETI Institute's 40th Anniversary (Nov 20)

• First Detection of a Pulsar (Nov 28)

• Last Night of the Arecibo Telescope (Nov 30)

• A New Beginning Arecibo C3