Fifty Years of the Arecibo Message: A Milestone in Interstellar Signaling and Its Fragile Legacy

To the point

An iconic binary message designed by Frank Drake and colleagues for the Arecibo Observatory encodes 1679 bits in a 23-by-73 grid to depict humans, the solar system, and DNA with a final section about the dish, contrasts with Yevpatoria’s 1962 Morse signal to Venus, cites a 1974 ceremony and a roughly 25,000-year round trip for any reply, mentions later signals like Beatles songs and TRAPPIST-1 transmissions, recalls the dish’s 2020 collapse, and is discussed by scholars such as Rebecca Charbonneau, David Grinspoon, Kathryn Denning, and Jonathan Jiang as both a striking artifact and a prompt to ponder risk, wonder, and humanity’s place, a point echoed by the designer’s daughter recalling an early draft.