Communications of the ACM
ACM Opinion
Greetings, E.t. (please Don't Murder s.)
The Arecibo Observatory in 1977.
Credit: Bettmann/Getty Images
On Nov. 16, 1974, a few hundred astronomers, government officials and other dignitaries gathered in the tropical forests of Puerto Rico's northwest interior, a four-hour drive from San Juan.
From The New York Times Magazine
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