Arecibo Observatory
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Dr Who Fan  Send message Joined: 8 Jan 01 Posts: 3213 Credit: 715,342 RAC: 4 
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Streaming LIVE NOW (on Facebook): What happened to Arecibo? Join Space.com's Chelsea Gohd The full video presentation will be viewable after the session is over also |
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Michael Watson Send message Joined: 7 Feb 08 Posts: 1384 Credit: 2,098,506 RAC: 5 |
The suspended receiver of the Arecibo observatory has fallen down onto the reflector dish, presumably destroying itself, and further damaging the dish. The only bright spot I can see here is that this probably simplifies the dismantling process somewhat. Please see the link below for further details: https://www.nbcnews.com/news/latino/huge-loss-huge-puerto-rico-radio-telescope-arecibo-collapses-following-n1249515 |
 Kissagogo27   Send message Joined: 6 Nov 99 Posts: 716 Credit: 8,032,827 RAC: 62 
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rob smith   Send message Joined: 7 Mar 03 Posts: 22199 Credit: 416,307,556 RAC: 380 
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And another view on the very sad news :-( https://www.sciencemag.org/news/2020/12/arecibo-telescope-collapses-ending-57-year-run?fbclid=IwAR290rCl9KD1MWtXy4W9OuZmKvwoOoDBFTNLPTZ1fhj1uM9Reowh2quxJbE Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
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rob smith Send message Joined: 7 Mar 03 Posts: 22199 Credit: 416,307,556 RAC: 380
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Scott Manley's thoughts on the failure mechanism: https://www.youtube.com/watch?v=vchDbyIRP44 Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
Neil Blaikie  Send message Joined: 17 May 99 Posts: 143 Credit: 6,652,341 RAC: 0 
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https://www.cbsnews.com/news/arecibo-observatory-radio-telescope-puerto-rico-collapses/ The telescope collapsed late last night. Its totally destroyed. 
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Richard Hagen  Send message Joined: 3 Apr 99 Posts: 16 Credit: 26,003,290 RAC: 5
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Very sad news. I would like to see it enlarged, modernized and rebuilt. Arecibo still maintained some unique capabilities, even with the larger single dish antenna now online. We have lost the most powerful radar telescope and planetary radar we had, and we have lost some of those abilities for the time being at least. I believe that the facility was good for Puerto Rico and the U.S., and in fact the whole World. Look at all the data that we have crunched that was captured by that very telescope. A sad day. It was inspirational, and we need to rebuild it, but bigger and better. Rich 
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Dr Who Fan Send message Joined: 8 Jan 01 Posts: 3213 Credit: 715,342 RAC: 4
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From The Register: Arecibo Observatory brings forward 'controlled demolition' plans by collapsing all by itself Star of science and celluloid is no more |
Jord  Send message Joined: 9 Jun 99 Posts: 15184 Credit: 4,362,181 RAC: 3 
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Video of the collapse: https://www.youtube.com/embed/b3AASKr_iHc |
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Michael Watson Send message Joined: 7 Feb 08 Posts: 1384 Credit: 2,098,506 RAC: 5 |
Please find a link, below, to a couple of videos. They show the moment of the collapse of the Arecibo receiver, onto the reflector dish, below, from two different points of view. One gets a sense of the scale, and the weight of the structure, especially from the first video. The slowness of the process, the noise, and the dust raised make for a rather alarming spectacle. The second video shows the support cable failing, then an alert camera operator re-aims on the just fallen receiver. https://www.theverge.com/22150330/arecibo-observatory-collapse-drone-footage-video |
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ML1 Send message Joined: 25 Nov 01 Posts: 20283 Credit: 7,508,002 RAC: 20
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Scott Manley's thoughts on the failure mechanism: Scott surmised correctly and with good detail, as seen directly at the time: https://www.youtube.com/watch?v=b3AASKr_iHc (Note, as already linked recently by other posters.) Rather a sad loss of unique capabilities. All the more sad for the sake of petty politics, and the false economizing, for (not) funding our Science... What next?! Keep searchin', Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Keith Myers  Send message Joined: 29 Apr 01 Posts: 13164 Credit: 1,160,866,277 RAC: 1,873
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Curious was it just lucky happenstance they had a drone out videoing the cable anchor point when the cables failed? Or did they have some estimate of the failure event? Seti@Home classic workunits:20,676 CPU time:74,226 hours   A proud member of the OFA (Old Farts Association) |
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Michael Watson Send message Joined: 7 Feb 08 Posts: 1384 Credit: 2,098,506 RAC: 5 |
The National Science Foundation has been monitoring Arecibo with drones since the last cable failure. It's immanent collapse has been considered a serious possibility from that point onward. |
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The_Matrix Send message Joined: 17 Nov 03 Posts: 414 Credit: 5,827,850 RAC: 0 
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No money NO FUN. Unbelievable, they didn't pay to save the construction. |
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rob smith Send message Joined: 7 Mar 03 Posts: 22199 Credit: 416,307,556 RAC: 380
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In the USA a campaign has started to get Arecibo rebuilt - links to a petition to the US government, via the White House: https://setiathome.berkeley.edu/forum_thread.php?id=85654 (I don't know if this is open to non-US residents) Bob Smith Member of Seti PIPPS (Pluto is a Planet Protest Society) Somewhere in the (un)known Universe? |
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ML1 Send message Joined: 25 Nov 01 Posts: 20283 Credit: 7,508,002 RAC: 20
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To recap the recent sad demise of the Arecibo Radio Telescope: Snapped Cable Damages Arecibo Observatory Radio Telescope Worlds Largest Radar Astronomy Dish To Be Demolished! Arecibo Radio Telescope Collapses! Analyzing Video Footage Of Collapse of Massive Arecibo Telescope The Moment Arecibo Observatory Collapsed Captured on Video And a reminder of just one aspect of capability that we have now lost: How The Arecibo Telescope Could Help Save The World What Happened to Arecibo Observatory And What Did It Discover? Keep searchin'! Martin See new freedom: Mageia Linux Take a look for yourself: Linux Format The Future is what We all make IT (GPLv3) |
Bob DeWoody  Send message Joined: 9 May 10 Posts: 3387 Credit: 4,182,900 RAC: 10
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I signed the petition. Rebuilding the Arecibo telescope, along with providing access to greater discoveries, could help at least some of Puerto Rico's economy. Bob DeWoody My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events. |
johnnymc  Send message Joined: 5 May 99 Posts: 35 Credit: 9,138,623 RAC: 0
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https://www.engadget.com/puerto-rico-approves-8-million-to-rebuild-arecibo-telescope-155454170.html I truly hope this comes into fruition. Life's short; make fun of it. |
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Cavalary Send message Joined: 15 Jul 99 Posts: 104 Credit: 7,507,548 RAC: 38 
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Nice article on National Geographic by Nadia Drake about Arecibo. |
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tullio Send message Joined: 9 Apr 04 Posts: 8797 Credit: 2,930,782 RAC: 1 
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The NANOGrav team at Boulder, Colorado, has used almost 15 years of data from Arecibo and Green Bank measuring the times of arrival of signals from 45 pulsars to detect low frequency gravitational waves, that cannot be detected by interferometers like LIGO, VIRGO and Kagra. They announced it today and published an article on Astrophysical Journal Letters. Tullio |
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