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A sad coda to this work: The destroyed Arecibo observatory was a key part of the NANOGrav experiment.

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It searched for projectiles in Cold War space. It listened for sounds from faraway worlds. It was also a second home for a little kid whose dad once ran the place. @nadiamdrake  on the collapse of the Arecibo Observatory.

"The Puerto Rican government announced the allocation of $8 million to rebuild the Arecibo Observatory." Meanwhile the National Science Foundation, which owns the observatory, previously announced plans to dismantle it. Essential service? #muniland 

See unreal drone footage of Arecibo Observatory's catastrophic collapse.

The Arecibo Observatory, a massive telescope, collapsed on December 1, 2020. What kind of a telescope was it? To find out the answer and play the quiz click here:

Just had a productive call with the NSF Director about the future of the Arecibo Observatory in Puerto Rico. The Director & I share a commitment to scientific advancement & preserving the cultural, historic, & economic importance of this site.

The world’s second-largest radio #telescope , at the Arecibo Observatory in Puerto Rico, was destroyed when its suspended 900-tonne receiver platform came loose and plunged 140 metres (450 feet) onto the radio dish below.

The Collapse of the Iconic Arecibo Observatory Telescope

Destruction of Arecibo Observatory an 'incalculable' loss for struggling Puerto Rico

Last week, the iconic telescope at the Arecibo Observatory in Puerto Rico collapsed to the ground after decades of astronomical discoveries.


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Following engineering assessments concluding damage to Arecibo Observatory cannot be addressed without endangering the lives and safety of crew and staff, NSF plans to decommission the 305-meter telescope:

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The instrument platform of the 305m telescope at Arecibo Observatory in Puerto Rico fell overnight. No injuries were reported. NSF is working with stakeholders to assess the situation. Our top priority is maintaining safety. NSF will release more details when they are confirmed.

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Additional details regarding the collapse at the Arecibo Observatory’s 305-meter telescope are available now at NSF's site: Engineers are on-site. Top priorities are maintaining safety at the site and assessing damage.

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New dramatic drone footage shows the moment support cables holding up the Arecibo Observatory in Puerto Rico snapped, sending the famous observatory that had been in operation since the 1960s crashing to the ground.

Arecibo Observatory’s suspended equipment platform fell hundreds of feet and crashed through the giant radio dish just before 8 a.m. local time on Dec. 1

The National Science Foundation says it will close the telescope at the renowned Arecibo Observatory in Puerto Rico in a blow to scientists worldwide who depend on it to search for planets, asteroids and extraterrestrial life. .

Giant, aging cables that support one of the world's largest single-dish radio telescopes are slowly unraveling in Puerto Rico, pushing the Arecibo Observatory, renowned for its key role in astronomical discoveries, to the brink of collapse.

Wow. Asteroid 1998 OR2 tumbling through space seen by the Arecibo observatory. They confirm the space rock is ~ 2 km in diameter and rotates once every 4.1 hours. 1998 OR2 will safely make a #closeapproach  of Earth on 29 April, at its closest being 16 x further than the Moon🌙

Used to detect mountains on Venus, the huge antenna at the Arecibo Observatory broke in half in the hurricane