The radio telescope at the Arecibo Observatory with a 1000 ft. diameter dish was completed in 1963 and built in a limestone karst sinkhole near Arecib


The radio telescope at the Arecibo Observatory with a 1000 ft. diameter dish was completed in 1963 and built in a limestone karst sinkhole near Arecibo, Puerto Rico.


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Photo credit: © Jon G. Fuller, Jr. / Alamy / Afripics
License: Licensed
Model Released: No

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