Arecibo Observatory
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            Arecibo Observatory is an educational facility funded by the National Science
            Foundation and called Arecibo C3 (Arecibo Center for Culturally Relevant and
            Inclusive Science Education, Computational Skills, and Community Engagement).
            From its opening in 1963 to 2016, when the Five-hundred-meter Aperture Spherical
            Telescope (FAST) became operational in China, Arecibo's dish made it the world's
            largest single-aperture radio antenna. In 2020 the antenna was irreparably
            damaged when its supporting cables failed and the receiving/transmitting
            equipment fell into the reflecting surface. The Observatory includes a 12-m
            remote dish antenna (previously used for very-long baseline interferometry with
            the main antenna), a LIDAR for probing the Earth's upper atmosphere, and the
            Ángel Ramos Foundation Visitor Center. 

Arecibo Observatory
National Astronomy and Ionosphere Center
HC 3 Box 53995
End of Road 625
Arecibo Puerto Rico
USA