Huge Arecibo Observatory Radio Telescope In Puerto Rico Collapses

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Huge Arecibo Observatory Radio Telescope In Puerto Rico Collapses
By: Danica Coto - AP News & HuffPost News - 12-01-20
Re: https://www.huffpost.com/entry/areci...b68ca87f87f670

Photo link: https://img.huffingtonpost.com/asset..._720_noupscale
This aerial view shows a hole in the dish panels of the Arecibo Observatory in Arecibo, Puerto Rico, on November 19, 2020. (Photo by RICARDO ARDUENGO/AFP via Getty Images)

**The collapse stunned many scientists who had relied on what was until recently the largest radio telescope in the world.**

SAN JUAN, Puerto Rico (AP) — A huge, already damaged radio telescope in Puerto Rico that has played a key role in astronomical discoveries for more than half a century completely collapsed on Tuesday.

The telescope’s 900-ton receiver platform fell onto the reflector dish more than 400 feet below.

The U.S. National Science Foundation had earlier announced that the Arecibo Observatory would be closed. An auxiliary cable snapped in August, causing a 100-foot gash on the 1,000-foot-wide (305-meter-wide) reflector dish and damaged the receiver platform that hung above it. Then a main cable broke in early November.

The collapse stunned many scientists who had relied on what was until recently the largest radio telescope in the world.

“It’s a huge loss,” said Carmen Pantoja, an astronomer and professor at the University of Puerto Rico who used the telescope for her doctorate. “It was a chapter of my life.”

Scientists worldwide had been petitioning U.S. officials and others to reverse the NSF’s decision to close the observatory. The NSF said at the time that it intended to eventually reopen the visitor center and restore operations at the observatory’s remaining assets, including its two LIDAR facilities used for upper atmospheric and ionospheric research, including analyzing cloud cover and precipitation data.

The telescope was built in the 1960s with money from the Defense Department amid a push to develop anti-ballistic missile defenses. It had endured hurricanes, tropical humidity and a recent string of earthquakes in its 57 years of operation.

The telescope has been used to track asteroids on a path to Earth, conduct research that led to a Nobel Prize and determine if a planet is potentially habitable. It also served as a training ground for graduate students and drew about 90,000 visitors a year.

“I am one of those students who visited it when young and got inspired,” said Abel Méndez, a physics and astrobiology professor at the University of Puerto Rico at Arecibo who has used the telescope for research. “The world without the observatory loses, but Puerto Rico loses even more.”

He last used the telescope on Aug. 6, just days before a socket holding the auxiliary cable that snapped failed in what experts believe could be a manufacturing error. The National Science Foundation, which owns the observatory that is managed by the University of Central Florida, said crews who evaluated the structure after the first incident determined that the remaining cables could handle the additional weight.

But on Nov. 6, another cable broke.

A spokesman for the observatory said there would be no immediate comment, and a spokeswoman for the University of Central Florida did not return requests for comment.

Scientists had used the telescope to study pulsars to detect gravitational waves as well as search for neutral hydrogen, which can reveal how certain cosmic structures are formed. About 250 scientists worldwide had been using the observatory when it closed in August, including Méndez, who was studying stars to detect habitable plantes.

“I’m trying to recover,” he said. “I am still very much affected.”

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Personal note: It's like anything else in life - things need maintenance. Repair's should've been made prior to its collapse. I've seen this telescope for years and so many scientist have used it for their studies. I'd have to blame the maintenance inspectors for not checking and/or replacing those cables more often. One could expect a failure over time and if it was that important "the cable's" should have been upgraded more often to ensure its longevity. Will it be repaired? I doubt it unless someone has deep pockets and/or all the interested science communities want to all come together - and chip in to fix it? Maybe its past its time? Since then many more observation telescopes have been built world wide - plus we do still have the Hubble - unless it can't do the work that the Arecibo was doing? If its that special and they still need it - then they will have to repair it - that's if they still want to?

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