Arecibo Observatory
Sixto A. González (born 1965) was the Director of the Arecibo Observatory from September 29, 2003 to September 15, 2006. Arecibo Observatory was an astronomical observatory located in Puerto Rico. At the time of González's directorship Arecibo was the world's largest single dish radio telescope. González was the first Puerto Rican in the position of Director of the observatory.