545:
Before the safe decommission of the telescope could occur, remaining support cables from one tower rapidly failed in the morning of
December 1, 2020, causing the instrument platform to crash through the dish, shearing off the tops of the support towers, and partially damaging some of the other buildings, though there were no injuries. NSF stated in 2020 that it was their intention to have the other observatory facilities operational as soon as possible and were looking at plans to rebuild a new telescope instrument in its place. In 2022, the NSF announced the telescope will not be rebuilt, with an educational facility to be established on the site.
661:
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Lynch, R. S.; Manoharan, P. K.; Marshall, S.; Minchin, R.; Palliyaguru, N. T.; Perera, B. B. P.; Perillat, P.; Pinilla-Alonso, N.; Pisano, D. J.; Quintero, L.; Raizada, S.; Ransom, S. M.; Fernandez-Rodriguez, F. O.; Salter, C. J.; Santos, P.; Sulzer, M.; Taylor, P. A.; Venditti, F. C. F.; Venkataraman, A.; Virkki, A. K.; Wolszczan, A.; Womack, M.; Zambrano-Marin, L. F. (July 13, 2019). "Astro2020 Activities and
Projects White Paper: Arecibo Observatory in the Next Decade".
847:
3174:
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448:(FAST) in China. Following two breaks in cables supporting the receiver platform in mid-2020, the NSF decommissioned the telescope. A full collapse of the telescope occurred on December 1, 2020, before either repairs or controlled demolition could be conducted. In 2022, the NSF announced the telescope will not be rebuilt, with an educational facility to be established on the site.
4420:
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253:
4372:
833:
4408:
4384:
630:
Two cable breaks, one in August 2020 and a second in
November 2020, threatened the structural integrity of the support structure for the suspended platform and damaged the dish. The NSF determined in November 2020 that it was safer to decommission the telescope rather than to try to repair it, but
1738:
Roshi, D. Anish; Anderson, L. D.; Araya, E.; Balser, D.; Brisken, W.; Brum, C.; Campbell, D.; Chatterjee, S.; Churchwell, E.; Condon, J.; Cordes, J.; Cordova, F.; Fernandez, Y.; Gago, J.; Ghosh, T.; Goldsmith, P. F.; Heiles, C.; Hickson, D.; Jeffs, B.; Jones, K. M.; Lautenbach, J.; Lewis, B. M.;
544:
After an auxiliary and main cable failure on the telescope in August and
November 2020, respectively, the NSF announced the decision that they would decommission the telescope through controlled demolition, but that the other facilities on the observatory would remain operational in the future.
521:
In the early 2000s, NASA started to reduce their contribution to the
Arecibo Observatory, putting more pressure on NSF to continue to fund the facility. In 2006, NSF made its first possible suggestion of significantly reducing its funding towards Arecibo and potentially decommissioning the
631:
the telescope collapsed before a controlled demolition could be carried out. The remaining support cables from one tower failed around 7:56 a.m. local time on
December 1, 2020, causing the receiver platform to fall into the dish and collapsing the telescope.
4505:
502:. Construction of the telescope and its supporting facilities were started in September of 1960, with the telescope operational by 1963. The telescope and supporting observatory were formally opened as the Arecibo Ionospheric Observatory on November 1, 1963.
4455:
622:
detection. Since around 2006, NSF funding support for the telescope had waned as the
Foundation directed funds to newer instruments, though academics petitioned to the NSF and Congress to continue support for the telescope. Numerous hurricanes, including
497:
entered into a contract with ARPA to carry out development studies for a large-scale ionospheric radar probe. The
Arecibo Telescope was funded as a means to study Earth's ionosphere for this purpose, and serving a dual-use as a general-purpose
541:(UCF) stepped forward to offer to manage the observatory and cover a significant portion of the operations and maintenance costs, and in 2018, NSF made UCF's consortium the new site operators, though no specific actions were announced.
1272:
1217:
completed last
November. Its $ 200 million astronomy division, increasingly committed to ambitious new projects, but long hobbled by flat Congressional budgets, was facing a deficit of at least $ 30 million by
4500:
3368:
2864:
1912:
660:
509:
on
October 1, 1969. NSF named Cornell University to manage the observatory's functions. By September 1971, NSF renamed the observatory as the National Astronomy and Ionosphere Center (NAIC) and had made it a
603:. The dish's surface was made of 38,778 perforated aluminum panels, each about 3 by 7 feet (1 by 2 m), supported by a mesh of steel cables. The ground beneath supported shade-tolerant vegetation.
1406:
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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
988:
634:
NASA led an extensive failure investigation and reported the findings, along with a technical bulletin with industry recommendations. The investigation concluded that "a combination of low socket
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The center, in collaboration with the Caribbean Astronomical Society, hosts a series of Astronomical Nights throughout the year, which feature diverse discussions regarding
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observatory. Academics and politicians lobbied to increase funding bookmarked for Arecibo to stave off its closure, and NASA recommitted funding in 2011 for study of
1904:
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3403:
2296:
887:
445:
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in 2017 led NSF again to consider the possibility of decommissioning the observatory as the costs of maintaining it had become too great. A consortium led by the
1709:"NASA Engineering and Safety Center Technical Bulletin No. 21-05, Industry Recommendations from Arecibo Observatory Zinc Spelter Socket Joint Failure Analysis"
2018:
1334:
2502:
1396:
4440:
4299:
866:
526:. To further cut losses, in 2011 NSF delisted Arecibo as a FFRDC, removed Cornell as the site operator, and replaced them with a collaborative team led by
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1108:
980:
2203:
1161:
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4041:
3709:
3142:
2893:
2616:
2453:
1990:
1580:
615:
550:
157:
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4076:
3846:
1646:
1010:
688:
Opened in 1997, the Ăngel Ramos Foundation Visitor Center features interactive exhibits and displays about the operations of the radio telescope,
288:
1617:
4510:
3747:
3206:
2854:
2576:
650:
The Arecibo Observatory also has other facilities beyond the main telescope, including a 12-meter (39 ft) radio telescope intended for
4470:
3699:
3684:
3444:
3229:
2830:
2724:
1761:"NSF begins planning for decommissioning of Arecibo Observatory's 305-meter telescope due to safety concerns [News Release 20-010]"
1192:
279:
3326:
1708:
3674:
3649:
3396:
2822:
482:
1873:
725:). The purposes of the center are to increase public interest in astronomy, the observatory's research successes, and space endeavors.
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2027:
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651:
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1244:
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2422:
2324:
2044:
2019:"Research rockets, including an experiment from Cornell, are scheduled for launch into the ionosphere next year from Puerto Rico"
958:
3316:
1524:
710:. The Foundation provided half of the funds to build the Visitor Center, with the remainder received from private donations and
2928:
2546:
1633:
At the Arecibo Observatory, a mix of shade-tolerant species have colonized the area beneath the 305-meter radio telescope dish.
411:
1359:
3831:
3389:
3331:
2909:
2646:
2482:
881:
697:
1584:
489:(ARPA) missile defense program, ARPA had sought a means to try to detect incoming missiles while they traveled through the
256:
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3964:
3773:
3664:
2332:
2196:
875:
565:(Arecibo Center for Culturally Relevant and Inclusive Science Education, Computational Skills, and Community Engagement).
546:
538:
97:
1686:
1134:
4284:
4157:
3654:
3096:
2774:
2674:
1040:
150:
3259:
654:(VLBI) with the main telescope; and a LIDAR facility whose research has continued since the main telescope's collapse.
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3301:
3117:
3008:
2874:
2782:
2596:
2398:
2251:
2247:
1428:
Witze, Alexandra (October 14, 2022). "Renowned Arecibo telescope won't be rebuilt â and astronomers are heartbroken".
506:
419:
4216:
3281:
2838:
1987:"NSF announces over $ 5M in funding to create new STEM education and research center at the Arecibo Observatory site"
1549:
Goldsmith, P. F.; Baker, L. A.; Davis, M. M.; Giovanelli, R. (1995). "Multi-feed Systems for the Arecibo Gregorian".
4362:
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3187:
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1326:
680:
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3801:
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2636:
2556:
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342:
331:
120:
115:
1816:
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3198:
3177:
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2814:
2714:
2390:
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2189:
893:
518:
began contributing towards funding of the observatory alongside NSF as to support its planetary radar mission.
49:
1095:
2084:
3669:
3086:
3076:
2540:
2406:
2131:
Altschuler, Daniel R.; Salter, Christopher J. (2013). "The Arecibo Observatory: Fifty astronomical years".
1169:
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3910:
3714:
3639:
2798:
2684:
702:
2160:
1986:
4329:
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3949:
3784:
3719:
3412:
3291:
3091:
3058:
2978:
2586:
2532:
2472:
2372:
2063:"Clintons (minus Hillary) visit Arecibo; former president urges more federal funding for basic sciences"
459:
facility, and a visitor center, which remained operational after the telescope's collapse. The asteroid
17:
3354:
1606:
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4196:
4167:
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3321:
3233:
3159:
2948:
2806:
2364:
2340:
2140:
2103:
1950:
1847:
1558:
1492:
1437:
1103:
814:
784:
693:
415:
238:
138:
126:
103:
82:
76:
30:
This article is about the observatory complex in general. For the former telescope specifically, see
467:, in recognition of the observatory's contributions to the characterization of Solar System bodies.
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3426:
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3132:
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775:
639:
593:
430:
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4111:
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2958:
2901:
2666:
2445:
2119:
2076:
1740:
1516:
1461:
852:
769:
711:
530:, which allowed the observatory to be able to offer its facilities to a wider range of projects.
494:
346:
2091:
642:
and environments, resulting in long-term cumulative damage and progressive zinc/wire failure".
3887:
3757:
3456:
3450:
3349:
3137:
2983:
2306:
1968:
1508:
1453:
1299:
1066:
790:
754:
739:
619:
585:
579:
527:
523:
476:
426:
232:
31:
561:, also in San Juan were selected by NSF in 2023 to set up and run an education center called
4376:
4334:
4274:
4221:
4127:
4101:
4001:
3578:
3432:
3127:
3023:
3018:
2953:
2704:
2356:
2148:
2111:
1958:
1855:
1500:
1445:
1369:
935:
904:
838:
2071:
2031:
194:
4349:
4339:
4162:
4021:
4006:
3969:
3954:
3900:
3826:
3306:
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2993:
2237:
2212:
1796:
1248:
624:
611:
607:
534:
499:
464:
452:
215:
3519:
3286:
1607:"Environmental Impact Statement for the Arecibo Observatory Arecibo, Puerto Rico (Draft)"
2144:
2107:
1954:
1851:
1760:
1562:
1496:
1441:
1241:
4236:
4137:
4066:
4016:
3892:
3790:
3527:
3122:
3003:
1838:
Altschuler, Daniel; Salter, Chris (June 2014). "Early history of Arecibo Observatory".
589:
2115:
954:
359:
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4182:
4147:
4106:
3629:
3619:
3492:
3462:
3311:
3043:
2998:
2973:
1905:"Pop Culture Pulsar: The Science Behind Joy Division's Unknown Pleasures Album Cover"
1520:
1480:
1465:
1263:"Arecibo Observatory, Puerto Rico's famous telescope, is battered by Hurricane Maria"
635:
65:
2123:
4388:
4344:
4289:
4269:
4264:
4259:
4211:
4086:
4026:
3734:
3659:
3624:
2968:
2241:
1364:
1162:"NASA Trims Arecibo Budget, Says Other Organizations Should Support Asteroid Watch"
638:
and a high percentage of sustained loading revealed an unexpected vulnerability to
460:
433:
3562:
4506:
Educational buildings on the National Register of Historic Places in Puerto Rico
4279:
3944:
3752:
3570:
3468:
3296:
3147:
3038:
3033:
2963:
1576:
981:"Arecibo Observatory Telescope Collapses, Ending An Era Of World-Class Research"
760:
748:
407:
142:
1504:
1449:
4294:
4172:
4091:
3535:
1963:
1938:
1676:
1138:
828:
722:
490:
4456:
Historic districts on the National Register of Historic Places in Puerto Rico
2054:"Arecibo joins global network to create 6,000-mile (9,700 km) telescope"
670:
The Arecibo Radio Telescope as viewed from the observation deck, October 2013
172:
159:
4314:
4051:
4046:
3861:
3836:
3543:
3152:
2380:
1677:"Arecibo Observatory Auxiliary M4N Socket Termination Failure Investigation"
1401:
1330:
939:
898:
718:
707:
689:
380:
2030:. Global Network Against Weapons and Nuclear Power in Space. Archived from
1972:
1512:
1457:
1135:"NASA SP-4218: To See the Unseen â A History of Planetary Radar Astronomy"
252:
4036:
4011:
3923:
3916:
3811:
3742:
3013:
2755:
600:
437:
3381:
3821:
3796:
3500:
2606:
606:
Since its completion in November 1963, the Telescope had been used for
2161:
https://blogs.iu.edu/sciu/2021/07/03/arecibos-50-years-of-discoveries/
2152:
1874:"Tor Hagfors, astronomy professor and Arecibo pioneer, dies at age 76"
1859:
4304:
3816:
3724:
3369:
National Register of Historic Places listings in Arecibo, Puerto Rico
2626:
2231:
2072:"Arecibo Radio Telescope Is Back in Business After 6-Month Spruce-Up"
1808:
627:, had damaged parts of the telescope, straining the reduced budget.
4383:
2865:
Special Astrophysical Observatory of the Russian Academy of Science
1745:
1397:"Facing collapse, the famed Arecibo Observatory will be demolished"
2745:
2181:
679:
597:
592:
1,000 feet (305 m) in diameter with an 869-foot (265 m)
456:
441:
1327:"UCF-led Consortium to Manage Arecibo Observatory in Puerto Rico"
696:. The center is named after the financial foundation that honors
3586:
2227:
1716:
1681:
1481:"A new era for Arecibo: legendary observatory begins next phase"
515:
3385:
3202:
2185:
1295:"Iconic Arecibo radio telescope saved by university consortium"
1647:"Huge Puerto Rico radio telescope, already damaged, collapses"
1011:"Huge Puerto Rico radio telescope, already damaged, collapses"
505:
Ownership of the observatory transferred from the DoD to the
4501:
National Register of Historic Places in Arecibo, Puerto Rico
1041:"(4337) Arecibo = 1933 HE = 1979 FR3 = 1979 HG2 = 1985 GB"
813:
Arecibo C3, A STEM Education Center : 2023âpresent:
2523:
Combined Array for Research in Millimeter-wave Astronomy
1360:"Giant Arecibo radio telescope collapses in Puerto Rico"
562:
206:
2174:
1939:"Arecibo Observatory director quits after funding row"
4360:
4325:
Potential cultural impact of extraterrestrial contact
1551:
Astronomical Society of the Pacific Conference Series
1354:
1352:
1544:
1542:
1193:"Radio Telescope And Its Budget Hang in the Balance"
440:, with a cable-mount steerable receiver and several
4245:
4181:
4120:
4075:
3933:
3733:
3638:
3602:
3555:
3512:
3485:
3478:
3419:
3340:
3267:
3240:
3105:
3067:
2921:
2886:
2773:
2738:
2465:
2287:
2272:
2219:
2085:
Entry into the National Register of Historic Places
721:, astronomical phenomena, and discoveries (such as
365:
352:
337:
327:
319:
311:
303:
262:
222:
201:
188:
149:
134:
114:
90:
72:
59:
3373:List of National Historic Landmarks in Puerto Rico
907:, projection room in the University of Puerto Rico
3705:Habitability of F-type main-sequence star systems
3695:Habitability of K-type main-sequence star systems
2627:Multi-Element Radio Linked Interferometer Network
1096:"The 40th Anniversary of the Arecibo Observatory"
926:"Radio-Radar Telescope Will Probe Solar System".
3992:Communication with extraterrestrial intelligence
512:federally funded research and development center
888:Five-hundred-meter Aperture Spherical Telescope
446:Five-hundred-meter Aperture Spherical Telescope
2513:Canadian Hydrogen Intensity Mapping Experiment
1107:. Vol. 149, no. 156. p. E2181.
3397:
3214:
2197:
1932:
1930:
618:(SETI) program. It was also used by NASA for
588:, whose main collecting dish was an inverted
584:The observatory's main feature was its large
555:University of Puerto Rico, RĂo Piedras Campus
8:
2503:Australian Square Kilometre Array Pathfinder
2096:Journal of Astronomical History and Heritage
1089:
1087:
684:Logo of the observatory at the entrance gate
42:
4300:History of the extraterrestrial life debate
3997:Gauss's Pythagorean right triangle proposal
2297:500 meter Aperture Spherical Telescope
867:National Register of Historic Places portal
3615:Planetary habitability in the Solar System
3482:
3404:
3390:
3382:
3317:Federico Degetau Consolidated Rural School
3221:
3207:
3199:
2284:
2204:
2190:
2182:
2041:"Budget Cuts Threaten Arecibo Observatory"
425:The observatory's main instrument was the
237:
214:
193:
125:
102:
81:
64:
48:
41:
4461:Historic Mechanical Engineering Landmarks
4446:Astronomical observatories in Puerto Rico
2028:"Activists protest US Navy radar project"
2017:Friedlander, Blaine (November 14, 1997).
1962:
1744:
1094:Acevedo-Vila, AnĂbal (October 30, 2003).
953:National Park Service (October 3, 2008).
280:U.S. National Register of Historic Places
63:National Astronomy and Ionosphere Center
27:Radio observatory in Arecibo, Puerto Rico
4486:Search for extraterrestrial intelligence
4042:Search for extraterrestrial intelligence
3710:List of potentially habitable exoplanets
3250:National Astronomy and Ionosphere Center
2617:Molonglo Observatory Synthesis Telescope
2454:Warkworth Radio Astronomical Observatory
1581:National Astronomy and Ionosphere Center
616:Search for extraterrestrial intelligence
551:University of Maryland, Baltimore County
451:The observatory also includes a smaller
396:National Astronomy and Ionosphere Center
272:National Astronomy and Ionosphere Center
18:National Astronomy and Ionosphere Center
4367:
3847:Living Interplanetary Flight Experiment
3332:Franklin Delano Roosevelt Graded School
2092:"Genesis of the 1000-foot Arecibo Dish"
2043:. The Planetary Society. Archived from
1527:from the original on September 28, 2023
1275:from the original on September 21, 2017
1191:Weiss, Rick Weiss (September 9, 2007).
918:
4451:Government buildings completed in 1963
1915:from the original on November 12, 2020
1884:from the original on November 20, 2020
1771:from the original on November 19, 2020
1623:from the original on December 16, 2020
1587:from the original on November 20, 2020
1409:from the original on November 19, 2020
1376:from the original on December 25, 2020
1242:"Management and Operation of the NAIC"
1160:Robert Roy Britt (December 20, 2001).
3748:Biological Oxidant and Life Detection
3118:Cosmic microwave background radiation
2855:Pushchino Radio Astronomy Observatory
2577:Large Latin American Millimeter Array
1993:from the original on October 26, 2023
1727:from the original on January 3, 2022.
1203:from the original on November 6, 2012
1199:. Arecibo, Puerto Rico. p. A01.
991:from the original on December 3, 2020
676:Ăngel Ramos Foundation Visitor Center
7:
3700:Habitability of yellow dwarf systems
3685:Habitability of neutron star systems
3445:Viking lander biological experiments
3230:National Register of Historic Places
3183:
2831:National Radio Astronomy Observatory
2725:Westerbork Synthesis Radio Telescope
2070:Henry Fountain (December 25, 2007).
2052:Blaine Friedlander (June 10, 2008).
1261:Kaplan, Sarah (September 22, 2017).
1114:from the original on August 21, 2021
1047:from the original on October 4, 2016
3675:Habitability of binary star systems
3650:Catalog of Nearby Habitable Systems
2823:Mullard Radio Astronomy Observatory
1809:"Sociedad de Astronomia del Caribe"
1657:from the original on April 22, 2021
1337:from the original on April 19, 2018
1021:from the original on April 22, 2021
961:from the original on March 29, 2013
483:United States Department of Defense
4441:1963 establishments in Puerto Rico
4310:Nexus for Exoplanet System Science
4153:Hypothetical types of biochemistry
3680:Habitability of natural satellites
2657:Northern Extended Millimeter Array
1395:Grush, Loren (November 19, 2020).
1307:from the original on March 4, 2018
1213:The cash crunch stems from an NSF
463:is named after the observatory by
25:
4496:Advanced Research Projects Agency
4491:University museums in Puerto Rico
3690:Habitability of red dwarf systems
3327:Palacio del MarquĂŠs de las Claras
2493:Australia Telescope Compact Array
2315:Caltech Submillimeter Observatory
2258:Very Long Baseline Interferometry
2116:10.3724/SP.J.1440-2807.2009.02.06
1689:from the original on July 3, 2021
1645:Coto, Danica (December 1, 2020).
1230:"NASA Support to Planetary Radar"
652:very-long-baseline interferometry
487:Advanced Research Projects Agency
347:Severud-Elstad-Krueger Associates
4418:
4406:
4394:
4382:
4370:
3842:Life Investigation For Enceladus
3258:
3182:
3173:
3172:
1909:Scientific American Blog Network
1819:from the original on May 5, 2014
1479:Oza, Anil (September 26, 2023).
859:
845:
831:
659:
477:History of the Arecibo Telescope
251:
4466:Museums in Arecibo, Puerto Rico
2547:Giant Metrewave Radio Telescope
2415:UTR-2 decameter radio telescope
2039:Amir Alexander (July 3, 2008).
2026:Ruiz, Carmelo (March 3, 1998).
1937:Watson, Traci (November 2015).
429:, a 305 m (1,000 ft)
4481:Science museums in Puerto Rico
3832:Journey to Enceladus and Titan
2647:Northern Cross Radio Telescope
2483:Atacama Large Millimeter Array
882:Atacama Large Millimeter Array
765:1973â1982: Harold D. Craft Jr.
559:University of the Sacred Heart
404:Arecibo Ionosphere Observatory
354:
1:
4511:University of Central Florida
3965:Berkeley SETI Research Center
3665:Extraterrestrial liquid water
876:Air Force Research Laboratory
795:2006â2007: Timothy H. Hankins
547:Cold Spring Harbor Laboratory
539:University of Central Florida
533:Damage to the telescope from
98:University of Central Florida
54:The Arecibo Telescope in 2019
4285:Extraterrestrials in fiction
4158:Interplanetary contamination
3655:Circumstellar habitable zone
3539:(unusual light fluctuations)
3531:(unusual light fluctuations)
3523:(unusual light fluctuations)
3097:Gravitational-wave astronomy
2675:Primeval Structure Telescope
2061:Lauren Gold (June 5, 2008).
807:2016â2022: Francisco CĂłrdova
402:) and formerly known as the
4471:National Science Foundation
4143:Extraterrestrial hypothesis
3302:Corregimiento Plaza Theater
3009:Christiaan Alexander Muller
2875:Vermilion River Observatory
2783:Algonquin Radio Observatory
2248:Astronomical interferometer
2090:Cohen, Marshall H. (2009).
1168:. Imaginova. Archived from
1133:Butrica, Andrew J. (1996).
801:2008â2011: Michael C. Nolan
780:1988â1992: Michael M. Davis
614:, and had been part of the
507:National Science Foundation
420:National Science Foundation
229:Arecibo 12m radio telescope
192:498 m (1,634 ft)
4527:
3857:Mars sample-return mission
3277:Calle Gonzalo MarĂn No. 61
2349:Large Millimeter Telescope
1813:www.sociedadastronomia.com
1790:Visitor Center information
1505:10.1038/d41586-023-03021-6
1450:10.1038/d41586-022-03293-4
744:1965â1966: John W. Findlay
577:
474:
29:
3610:Earliest known life forms
3363:
3256:
3168:
2637:Murchison Widefield Array
2557:Green Bank Interferometer
2381:RATAN-600 Radio Telescope
2264:Astronomical radio source
1964:10.1038/nature.2015.18745
1795:November 4, 2013, at the
804:2011â2015: Robert B. Kerr
798:2007â2008: Robert B. Kerr
706:newspaper and founder of
377:
373:
353:NRHP reference
345:of Praeger-Kavanagh, and
299:
295:
286:
277:
270:
266:
249:
47:
3975:Breakthrough Initiatives
3282:Casa AlcaldĂa de Arecibo
2847:Onsala Space Observatory
2839:Nançay Radio Observatory
2815:Jodrell Bank Observatory
2715:Very Long Baseline Array
2391:Sardinia Radio Telescope
894:List of radio telescopes
810:2022â2023: Olga Figueroa
257:Related media on Commons
4079:extraterrestrial beings
3670:Galactic habitable zone
3077:Submillimetre astronomy
2689:Australia, South Africa
2541:Event Horizon Telescope
1577:"Telescope Description"
1251:Retrieved April 6, 2013
1043:. Minor Planet Center.
940:10.1109/EE.1961.6433355
596:, constructed inside a
493:. On November 6, 1959,
4227:Planetarium hypothesis
4217:HartâTipler conjecture
4202:Dark forest hypothesis
4192:Aestivation hypothesis
3911:Venus In Situ Explorer
3715:Planetary habitability
3504:(misidentified quasar)
3496:(misidentified pulsar)
2799:Green Bank Observatory
2685:Square Kilometre Array
1989:. September 25, 2023.
1247:March 3, 2018, at the
1232:Retrieved July 7, 2011
1137:. NASA. Archived from
928:Electrical Engineering
685:
315:118 acres (48 ha)
289:U.S. Historic district
60:Alternative names
4330:Post-detection policy
4232:Rare Earth hypothesis
4057:Voyager Golden Record
3950:Allen Telescope Array
3785:Enceladus Life Finder
3720:Superhabitable planet
3413:Extraterrestrial life
3292:Casa de la Diosa Mita
3092:High-energy astronomy
2979:Sebastian von Hoerner
2587:Long Wavelength Array
2533:European VLBI Network
2473:Allen Telescope Array
2373:Qitai Radio Telescope
2065:. Cornell university.
2021:. Cornell University.
1333:. February 22, 2018.
1303:. February 22, 2018.
1067:"Arecibo Observatory"
955:"Weekly List Actions"
934:(7): 561. July 1961.
815:Wanda Liz DĂaz Merced
683:
646:Additional telescopes
557:in San Juan; and the
436:built into a natural
173:18.34417°N 66.75278°W
116:Observatory code
4320:Planetary protection
4207:Firstborn hypothesis
4197:Berserker hypothesis
4168:Mediocrity principle
3985:Breakthrough Message
3603:Life in the Universe
3234:Arecibo, Puerto Rico
3160:Solar radio emission
2949:Jocelyn Bell Burnell
2807:Haystack Observatory
2341:Green Bank Telescope
2325:Effelsberg Telescope
1880:. January 24, 2007.
1372:. December 1, 2020.
1104:Congressional Record
1017:. December 1, 2020.
785:Daniel R. Altschuler
694:atmospheric sciences
416:Arecibo, Puerto Rico
394:, also known as the
4133:Directed panspermia
4112:Reptilian humanoids
3980:Breakthrough Listen
3960:Arecibo Observatory
3906:Titan Mare Explorer
3479:Signals of interest
3439:Murchison meteorite
3427:Shergotty meteorite
3133:Pulsar timing array
2939:Edward George Bowen
2929:Elizabeth Alexander
2791:Arecibo Observatory
2695:Submillimeter Array
2597:Low-Frequency Array
2567:Korean VLBI Network
2433:Southern Hemisphere
2344:(West Virginia, US)
2145:2013PhT....66k..43A
2108:2009JAHH...12..141C
1955:2015Natur.527..142W
1903:Christiansen, Jen.
1852:2014PhT....67f..12A
1616:. NSF. p. 66.
1563:1995ASPC...75...90G
1497:2023Natur.622...19O
1442:2022Natur.610..618W
1268:The Washington Post
1197:The Washington Post
1172:on December 5, 2008
1141:on November 1, 2007
776:Riccardo Giovanelli
594:radius of curvature
431:spherical reflector
392:Arecibo Observatory
178:18.34417; -66.75278
169: /
44:
43:Arecibo Observatory
4255:Ancient astronauts
3852:Mars Geyser Hopper
3780:Enceladus Explorer
3420:Events and objects
3355:Paseo VĂctor Rojas
3113:Aperture synthesis
3082:Infrared astronomy
3019:Joseph Lade Pawsey
2989:Kenneth Kellermann
2959:Nan Dieter-Conklin
2667:One-Mile Telescope
2446:Parkes Observatory
2077:The New York Times
1720:. August 2, 2021.
853:Puerto Rico portal
770:Donald B. Campbell
712:Cornell University
686:
524:near-earth objects
495:Cornell University
369:September 23, 2008
4358:
4357:
3888:SpaceX Red Dragon
3803:Rosalind Franklin
3598:
3597:
3457:Allan Hills 84001
3451:Allan Hills 77005
3379:
3378:
3350:Cambalache Bridge
3322:Gonzalo MarĂn 101
3196:
3195:
3138:Radio propagation
3087:Optical astronomy
2984:Karl Guthe Jansky
2794:(Puerto Rico, US)
2769:
2768:
2561:West Virginia, US
2310:(Puerto Rico, US)
2307:Arecibo Telescope
2153:10.1063/PT.3.2179
2047:on July 21, 2008.
1949:(7577): 142â143.
1878:Cornell Chronicle
1860:10.1063/PT.3.2402
1685:. June 30, 2021.
1436:(7933): 618â619.
1329:(Press release).
791:Sixto A. GonzĂĄlez
755:Gordon Pettengill
740:William E. Gordon
729:List of directors
620:Near-Earth object
580:Arecibo Telescope
574:Arecibo Telescope
549:in New York; the
528:SRI International
427:Arecibo Telescope
388:
387:
233:Arecibo Telescope
32:Arecibo Telescope
16:(Redirected from
4518:
4476:Radio telescopes
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4387:
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4366:
4335:San Marino Scale
4275:Brookings Report
4222:Neocatastrophism
4128:Cosmic pluralism
4102:Little green men
4077:Types of alleged
4002:Astrolinguistics
3591:
3583:
3582:(unknown origin)
3579:Fast radio burst
3575:
3567:
3548:
3547:(unknown origin)
3544:HD 164595 signal
3540:
3532:
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3505:
3497:
3483:
3433:Nakhla meteorite
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3153:HD 164595 signal
3128:Odd radio circle
3106:Related articles
3024:Ruby Payne-Scott
2954:Arthur Covington
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412:Barrio Esperanza
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4340:Technosignature
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4163:Kardashev scale
4116:
4078:
4071:
4067:Xenolinguistics
4032:Project Phoenix
4022:Project Cyclops
4007:Lincos language
3970:Bracewell probe
3955:Arecibo message
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3827:Icebreaker Life
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3307:Edificio Oliver
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3049:Gart Westerhout
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2034:on May 1, 2001.
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612:radio astronomy
608:radar astronomy
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500:radio telescope
481:As part of the
479:
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465:Steven J. Ostro
453:radio telescope
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2102:(2): 141â152.
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4148:Fermi paradox
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3630:Life on Titan
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3044:Govind Swarup
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2999:John D. Kraus
2997:
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2994:Frank J. Kerr
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2775:Observatories
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2333:Galenki RT-70
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2133:Physics Today
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2056:. EurekAlert.
2055:
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2020:
2015:
2014:
2009:
1992:
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1840:Physics Today
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1215:senior review
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1129:
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1076:September 28,
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1016:
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705:
704:
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695:
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682:
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655:
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645:
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637:
636:design margin
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428:
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417:
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409:
405:
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382:
376:
372:
368:
366:Added to NRHP
364:
361:
358:
351:
348:
344:
340:
336:
333:
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322:
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310:
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51:
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37:
33:
19:
4425:Solar System
4345:UFO religion
4290:Extremophile
4270:Biosignature
4265:Astroecology
4260:Astrobiology
4212:Great Filter
4027:Project Ozma
3959:
3935:Interstellar
3922:
3915:
3893:
3881:Perseverance
3880:
3872:
3802:
3789:
3772:
3765:
3758:
3660:Earth analog
3642:habitability
3625:Life on Mars
3365:
3287:Casa CĂłrdova
3249:
3068:Astronomy by
3029:Arno Penzias
2969:Cyril Hazard
2790:
2611:South Africa
2402:(Uzbekistan)
2242:Radio window
2159:
2136:
2132:
2099:
2095:
2075:
2045:the original
2032:the original
1995:. Retrieved
1981:
1946:
1942:
1919:November 20,
1917:. Retrieved
1908:
1898:
1888:November 20,
1886:. Retrieved
1877:
1868:
1843:
1839:
1833:
1821:. Retrieved
1812:
1803:
1785:
1775:November 19,
1773:. Retrieved
1764:
1755:
1733:
1715:
1703:
1691:. Retrieved
1680:
1671:
1659:. Retrieved
1650:
1640:
1632:
1627:November 23,
1625:. Retrieved
1613:
1601:
1591:November 20,
1589:. Retrieved
1571:
1554:
1550:
1529:. Retrieved
1488:
1484:
1474:
1433:
1429:
1423:
1413:November 19,
1411:. Retrieved
1400:
1390:
1378:. Retrieved
1365:The Guardian
1363:
1339:. Retrieved
1321:
1309:. Retrieved
1298:
1289:
1277:. Retrieved
1266:
1256:
1237:
1225:
1214:
1212:
1205:. Retrieved
1196:
1186:
1174:. Retrieved
1170:the original
1165:
1155:
1143:. Retrieved
1139:the original
1128:
1116:. Retrieved
1102:
1074:. Retrieved
1070:
1061:
1049:. Retrieved
1035:
1023:. Retrieved
1014:
1005:
993:. Retrieved
984:
975:
963:. Retrieved
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732:
716:
701:
687:
649:
633:
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461:4337 Arecibo
450:
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399:
395:
391:
389:
304:Nearest city
91:Organization
36:
4413:Outer space
4401:Spaceflight
4280:Exotheology
4092:Grey aliens
3945:Active SETI
3873:Opportunity
3753:BioSentinel
3571:Wow! signal
3520:KIC 8462852
3469:CI1 fossils
3297:Casa Ulanga
3148:Wow! signal
3039:Martin Ryle
3034:Grote Reber
2964:Frank Drake
2905:(Australia)
2739:Space-based
2729:Netherlands
2601:Netherlands
2571:South Korea
2449:(Australia)
2399:Suffa RT-70
1997:October 26,
1765:www.nsf.gov
1661:December 5,
1380:December 1,
1118:January 14,
1025:December 3,
995:December 3,
965:February 6,
789:2003â2006:
783:1992â2003:
774:1987â1988:
768:1982â1987:
761:Tor Hagfors
759:1971â1973:
753:1968â1971:
749:Frank Drake
747:1966â1968:
738:1960â1965:
733:Source(s):
698:Ăngel Ramos
408:observatory
176: /
151:Coordinates
145:, Caribbean
143:Puerto Rico
73:Named after
39:Observatory
4435:Categories
4315:Noogenesis
4295:Hemolithin
4173:Panspermia
4121:Hypotheses
4097:Insectoids
4062:Water hole
3563:SHGb02+14a
3536:VVV-WIT-07
3342:Structures
3070:EM methods
2290:telescopes
2288:Individual
2139:(11): 43.
1746:1907.06052
913:References
723:Comet ISON
719:exoplanets
640:zinc creep
569:Facilities
563:Arecibo C3
491:ionosphere
475:See also:
223:Telescopes
164:66°45â˛10âłW
161:18°20â˛39âłN
4377:Astronomy
4185:solutions
4052:setiQuest
4047:SETI@home
3862:Mars 2020
3837:Laplace-P
3774:Dragonfly
3759:Curiosity
3640:Planetary
3366:See also:
3269:Buildings
3054:Paul Wild
2887:Multi-use
2867:(SAORAS,
2641:Australia
2629:(MERLIN,
2621:Australia
2507:Australia
2497:Australia
2426:(Ukraine)
2418:(Ukraine)
2328:(Germany)
1846:(6): 12.
1557:: 90â98.
1521:263113097
1466:252903742
1402:The Verge
1341:April 18,
1331:UCF Today
1166:Space.com
1145:August 6,
1071:darpa.mil
899:RATAN-600
708:Telemundo
690:astronomy
514:(FFRDC).
328:Architect
4037:SERENDIP
4012:NIROSETI
3924:Viking 2
3917:Viking 1
3822:Foton-M3
3812:ExoLance
3743:Beagle 2
3242:District
3178:Category
3014:Jan Oort
2913:(Canada)
2897:(Canada)
2850:(Sweden)
2842:(France)
2786:(Canada)
2756:Spektr-R
2599:(LOFAR,
2579:(LLAMA,
2536:(Europe)
2525:(CARMA,
2515:(CHIME,
2505:(ASKAP,
2352:(Mexico)
2336:(Russia)
2220:Concepts
2124:18990068
1991:Archived
1973:26560275
1913:Archived
1882:Archived
1817:Archived
1793:Archived
1769:Archived
1722:Archived
1687:Archived
1655:Archived
1618:Archived
1585:Archived
1525:Archived
1513:37759120
1458:36241884
1407:Archived
1374:Archived
1335:Archived
1311:March 3,
1305:Archived
1273:Archived
1245:Archived
1201:Archived
1109:Archived
1051:June 16,
1045:Archived
1019:Archived
989:Archived
959:Archived
901:(Russia)
825:See also
703:El Mundo
601:sinkhole
438:sinkhole
406:, is an
360:07000525
338:Engineer
189:Altitude
135:Location
4363:Portals
3901:Tanpopo
3797:ExoMars
3501:CTA-102
3493:CP 1919
3188:Commons
2727:(WSRT,
2717:(VLBA,
2677:(PaST,
2619:(MOST,
2607:MeerKAT
2549:(GMRT,
2495:(ATCA,
2485:(ALMA,
2438:HartRAO
2410:(Japan)
2394:(Italy)
2376:(China)
2368:(India)
2299:(FAST,
2252:History
2226:Units (
2141:Bibcode
2104:Bibcode
1951:Bibcode
1848:Bibcode
1693:July 1,
1651:AP NEWS
1614:nsf.gov
1559:Bibcode
1493:Bibcode
1438:Bibcode
1300:Science
1207:July 8,
1176:July 8,
1015:AP NEWS
985:NPR.org
890:(China)
884:(Chile)
471:History
422:(NSF).
307:Arecibo
202:Website
139:Arecibo
77:Arecibo
4305:MERMOZ
3894:Spirit
3817:EXPOSE
3767:Darwin
3725:Tholin
3471:(2011)
3465:(2000)
3459:(1984)
3453:(1977)
3447:(1976)
3441:(1969)
3435:(1911)
3429:(1865)
2922:People
2869:Russia
2859:Russia
2760:Russia
2707:(VLA,
2697:(SMA,
2687:(SKA,
2661:France
2639:(MWA,
2589:(LWA,
2569:(KVN,
2559:(GBI,
2517:Canada
2475:(ATA,
2385:Russia
2317:(CSO,
2260:(VLBI)
2232:jansky
2122:
1971:
1943:Nature
1823:May 5,
1519:
1511:
1485:Nature
1464:
1456:
1430:Nature
553:; the
485:(DoD)
250:
235:
123:
100:
79:
4389:Stars
3896:rover
3883:rover
3875:rover
3805:rover
3761:rover
3556:Other
3513:Stars
2750:Japan
2746:HALCA
2679:China
2651:Italy
2551:India
2543:(EHT)
2487:Chile
2301:China
2120:S2CID
1741:arXiv
1725:(PDF)
1712:(PDF)
1621:(PDF)
1610:(PDF)
1517:S2CID
1462:S2CID
1218:2010.
1112:(PDF)
1099:(PDF)
598:karst
457:LIDAR
442:radar
379:[
320:Built
209:.naic
3587:BLC1
3371:and
3143:SETI
2910:PARL
2894:DRAO
2878:(US)
2834:(US)
2826:(UK)
2818:(UK)
2810:(US)
2802:(US)
2670:(UK)
2457:(NZ)
2360:(UK)
2279:List
2230:and
2228:watt
1999:2023
1969:PMID
1921:2020
1890:2020
1825:2014
1777:2020
1717:NASA
1695:2021
1682:NASA
1663:2020
1629:2020
1593:2020
1533:2023
1509:PMID
1454:PMID
1415:2020
1382:2020
1343:2018
1313:2018
1281:2017
1209:2008
1178:2008
1147:2014
1120:2021
1078:2024
1053:2022
1027:2020
997:2020
967:2018
878:(US)
692:and
610:and
516:NASA
455:, a
434:dish
400:NAIC
390:The
323:1963
312:Area
211:.edu
3232:in
2149:doi
2112:doi
1959:doi
1947:527
1856:doi
1501:doi
1489:622
1446:doi
1434:610
936:doi
410:in
355:No.
207:www
121:251
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2719:US
2699:US
2631:UK
2319:US
2147:.
2137:66
2135:.
2118:.
2110:.
2100:12
2098:.
2094:.
2074:.
1967:.
1957:.
1945:.
1941:.
1929:^
1911:.
1907:.
1876:.
1854:.
1844:67
1842:.
1815:.
1811:.
1767:.
1763:.
1714:.
1679:.
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1649:.
1631:.
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1555:75
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1541:^
1523:.
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1432:.
1405:.
1399:.
1368:.
1362:.
1351:^
1297:.
1271:.
1265:.
1211:.
1195:.
1164:.
1101:.
1086:^
1069:.
1013:.
987:.
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932:80
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1961::
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1862:.
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