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The observatory's main instrument was the Arecibo Telescope, a 305 m (1,000 ft) spherical reflector dish built into a natural sinkhole, with a cable-mount ...
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The Arecibo Observatory is an observatory in Arecibo, Puerto Rico. It is part of the National Astronomy and Ionosphere Center (NAIC). The observatory has a ...
The Arecibo message is an interstellar radio message carrying basic information about humanity and Earth that was sent to the globular cluster Messier 13 in ...

Arecibo Observatory

(1,709) Observatory in Arecibo, Puerto Rico
Temporarily closed
Address: 86VW+MWP, PR-625, Arecibo, 00612, Puerto Rico