Arecibo Message

In 1974, the most powerful broadcast ever deliberately beamed into space was made from Puerto Rico. The broadcast formed part of the ceremonies held to mark a major upgrade to the Arecibo Radio Telescope.
Ross 128

Signals from A Nearby Star System?

UPDATE July 24, 2017  
Arecibo Observatory

Arecibo Observatory 'Still Standing' After Hurricane Maria Ravaged Puerto Rico

The Arecibo Observatory contains the second-largest radio telescope in the world, and that telescope has been out of service ever since Hurricane Maria hit Puerto Rico on Sept. 20.