Footage of Arecibo Observatory collapse

Footage of the collapse of the Arecibo Observatory. Credit: Courtesy of the Arecibo Observatory, a U.S. National Science Foundation facility
The Arecibo Observatory, also known as the National Astronomy and Ionosphere Center (NAIC), is an observatory in Arecibo, Puerto Rico. Owned by the US National Science Foundation (NSF), it is an icon of the Puerto Rican space and science industries.
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 steerable receiver and several radar transmitters for emitting signals mounted 150 m (492 ft) above the dish. Completed in 1963, it was the world's largest single-aperture telescope for 53 years, surpassed in July 2016 by the Five-hundred-meter Aperture Spherical Telescope (FAST) in China. The Arecibo Telescope suffered catastrophic structural failure on December 1, 2020 after two cable breaks in the previous months. No injuries were reported. The observatory also includes a radio telescope, a Lidar facility, and a visitor's center which are expected to remain operational after the damage from the main telescope collapse is assessed.

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